Which of the following changes to a pipe would increase the conductance by a factor of 12?
A. Quadrupling the length and tripling the radius.
B. Reducing the length by a factor of and doubling the radius.
C. Tripling the length and reducing the radius by a factor of .
D. Reducing the length but a factor of and doubling the radius.

Answers

Answer 1

C. Tripling the length and reducing the radius by a factor of 2 is the change to a pipe would increase the conductance by a factor of 12.

Explanation:

As we know that the resistance is directly proportional to the length of the pipe and it is inversely proportional to the cross sectional area of the pipe.

So it is represented as,

R∝ l /A [ area is radius square]

So k is the proportionality constant used.

R = kl/A

Conductance is the inverse of resistance, so it is given as,

C= 1/R.

R₁ = kl₁ / A₁

R₂ = kl₂/A₂

R₂/R₁ = 1/12 [∵ conductance is the inverse of resistance]

        = l₂A₁ / l₁A₂

If we chose l₁/l₂= 3 and A₂/A₁= 4 So R₂/R₁= 1/3×4 = 1/12

So tripling the length and reducing the radius by a factor of 2 would increase the conductance by a factor of 12.

Answer 2

Answer:

Reducing the length by a factor of  1/3 and doubling the radius.

Explanation:

this is correct answer, my assignment says


Related Questions

In the process of cellular respiration,carbohydrate combines with _______ to produce carbon dioxide._________,and energy

Answers

The energy is generally not needed immediately, so it is used to combine ADP with phosphate ions to form ATP molecules. During the process of cellular respiration, carbon dioxide is given off as a waste product. This carbon dioxide can be used by photosynthesizing cells to form new carbohydrates.

Answer:

w

Explanation:

calculate the decrease in temperature (in Celsius) when 2.00L at 21.0*C is compressed to 1.00.

Answers

Decrease in temperature is -126.0°C

Explanation:

Using Charles law we can set up the equation as,

V₁/T₁ = V₂/T₂

(2.00 L) / 294.0 K) = (1.00 L) / (x)

cross multiply to get:

2x = 294

2x/2 = 294/2

x = 147.0 K

Now kelvin is converted into Celsius by subtracting 273 from 147 as,

147 - 273 = -126°C

The decrease in temperature will be "-126°C".

Given that:

Volume,

[tex]V_1 = 2.00 \ L[/tex][tex]V_2 = 1.00 L[/tex]

Temperature,

[tex]T_1 = 294.0 \ K[/tex][tex]T_2 = x[/tex]

By using Charles Law, we get

→ [tex]\frac{V_1}{T_1} = \frac{V_2}{T_2}[/tex]

By substituting the values, we get

 [tex]\frac{2.00}{294.0} = \frac{1.00 \ L}{x}[/tex]

    [tex]2x = 294[/tex]

      [tex]x = \frac{294}{2}[/tex]

         [tex]= 147.0 \ K[/tex]

By converting "Kelvin" into "Celsius", we get

= [tex]147-273[/tex]

= [tex]- 126^{\circ} C[/tex]

Thus the response above is correct.

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Which factor is not a characteristic of a mineral?


A. crystalline structure that forms a geometric shape


B. always a solid; never a liquid or a gas


C. naturally occurring, inorganic substance


D. a variable chemical composition

Answers

A mineral is defined by its crystalline structure, solid state, naturally occurring and inorganic nature, and definite chemical composition. Therefore, 'a variable chemical composition' is not a characteristic of a mineral. The correct option is: D.

To determine which factor is not a characteristic of a mineral, we need to understand the key properties that define a mineral.

A mineral is characterized by the following:

Crystalline structure that forms a geometric shape: This indicates that the internal arrangement of atoms is orderly and repetitive.Always a solid; never a liquid or a gas: Minerals must be in the solid state at normal temperatures.Naturally occurring, inorganic substance: Minerals form naturally without any biological processes and are not composed of complex carbon molecules common in organic substances.A definite chemical composition: Minerals generally have a specific chemical formula, though some can have slight variations due to element substitution.

Given this definition, the correct answer to the question is:

D. a variable chemical composition

Minerals have a definite chemical composition, which makes option D incorrect.

How do scientist form hypothesis

Answers

Answer:

Explanation:

it needs to included an if,then statement.

Form a hypothesis a tentative description of what's been observed, and make predictions based on that hypothesis. Test the hypothesis and predictions in an experiment that can be reproduced. Analyze the data and draw conclusions; accept or reject the hypothesis or modify the hypothesis if necessary.

what is the number of neon for the periodic table

Answers

Answer:

it is 10

Explanation:

Answer:

10

Explanation:

Calculate the hydroxide ion concentration of a 0.200 M solution of HCIO4

Answers

The concentration of hydroxide ion is  5  [tex]\times[/tex] 10^ − 14  M.

Explanation:

Consider the equilibrium of this acid's dissociation,

                          H C l O 4  ⇌  H +  +  C l O  4 -

Moreover, let's assume that  H C l O 4  is a strong acid and will fully dissociate.

Hence,

                              [ H + ]  =  0.20  M

Now, recall,  

                  K w  =  [ H + ] [ O H − ]  =  1.0  [tex]\times[/tex] 10 ^− 14

Hence,

                  ⇒ [ O H − ]  =  K w  / [ H + ]  = 5  [tex]\times[/tex] 10^ − 14  M.

A cylinder at left with balls evenly spaced throughout the cylinder has an arrow leading to a cylinder at right cylinder with balls in a layer at its bottom. Which change of state is shown in the model?

Answers

Answer:

Condensation

Explanation:

Answer:

sublimation

Explanation:

it went from boiling so it can't be B. and its not condensation and i dont believe its freezing so C. is your answer

I need help please!​

Answers

Answer:

1.  Dipoles

2. London Dispersion

3. weaker

4. long distances

5.easy

Explanation:

Map of the United notes. Three circles centered at Portland, Salt Lake City, and Los Angeles. The circles converge at San Francisco.
Based on the seismograph measurements in the

Answers

Answer:

length tunes height over virtual distance

Answer:

san francisco

Explanation:

its correct i promise <3

Help please I need the answer

Answers

Answer:

                    Polyatomic Ionic Compound

Explanation:

                     In given statement the compound given is called as Sodium oleate this means that when Oleic acid is treated with NaOH then it forms.

                     In chemistry there are few species which are involved in the formation of compounds.

  (i) Atoms:

                  It is very common that atoms of different elements combine to form compound through covalent bond. For example, H₂, O₂, N₂, F₂ e.t.c.

   (i) Ions:

                  Other than covalent compounds we have ionic compounds. Ionic compounds are made up of ions. These ions forming the ionic compounds can be monatomic like Na⁺, Br⁻, Mg²⁺, Al³⁺, N⁻³ or they can be polyatomic like CO₃²⁻, SO₄²⁻, NH₄⁺, PO₄³⁻ e.t.c.

    (iii) Polyatomic Ions:

                                     In polyatomic ions we find a charge on a molecule which contains two or more atoms bonded covalently. Hence, in given compound we have a long chain of molecule containing a negative charge neutralized by opposite +ve charged sodium ion. Hence, Sodium oleate is a polyatomic ionic compound.

[A]a[B]b [C]c [D]d

When the Keq value is large, the number representing [A]a[B]b must be (larger or smaller) than the number representing [C]c[D]d. This relationship means that the (reactants or products) must be favored and that the mixture at equilibrium is largely (reactants or products).

Answers

Answer:

Smaller; products; products  

Explanation:

aA  + bB ⇌ cC + dD

[tex]K_{\text{eq}} = \dfrac{\text{[C]}^{c}\text{[D]}^{d}}{\text{[A]}^{a}\text{[B ]}^{b}}\\\\\text{When the $K_{\text{eq}}$ is large, the number representing [A]$^{a}$[B ]$^{b}$ must be $\textbf{smaller}$ than the}\\\text{number representing [C]$^{c}$[D]$^{d}$. This relationship means that the $\textbf{products}$ must be favoured}\\\text{and that the mixture at equilibrium is largely $\textbf{products}$.}[/tex]

9) How many grams of carbon dioxide can be formed from the decomposition of 35.6
grams of calcium carbonate?

Answers

Answer: 15.7 g CO2

Explanation: Solution attached:

CaCO3 => CaO + CO2

Convert mass of CaCO3 to moles.

Use the mole ratio of CaCO3 and CO2 from the balanced equation.

Convert moles of CO2 to mass using its molar mass.

PLEASE ANSWER

These two containers have a pink liquid in them. Which of these containers has more thermal energy and why?

A. Container B has more thermal energy because the temperature is higher.
B. Container A has more thermal energy since there is more room for the liquid to move around.
C. Even thought the temperature is the same,, container A has more thermal energy since it has less liquid than container B
D. Even thought the temperature is the same, container B has more thermal energy since it has more liquid than container A

Answers

D. Even though the temperature is the same, container B has more thermal energy, since it has more liquid than container A.

Explanation:

Whenever there is an increase in the volume of the pink liquid, it is due to the increase in temperature.

When the temperature increases, the molecules move farther apart as much as possible.

When the molecules moves apart from each other and collide with each other, so that its kinetic energy also increases, So thermal energy of the container B is more compared to the container A.

Final answer:

Container B has more thermal energy because it holds more liquid than container A, resulting in more total kinetic energy among its molecules, despite both containers having the same temperature.

Explanation:

The correct answer to the student's question is D. Even though the temperature is the same, container B has more thermal energy since it has more liquid than container A. Thermal energy depends on both the temperature of the liquid and the amount of substance that is present. In this case, despite having the same temperature, the larger volume of liquid in container B contains more molecules. Each molecule possesses a certain amount of kinetic energy due to its movement, so more molecules mean more total kinetic energy, which results in higher thermal energy. It's important to note that thermal energy is an extensive property; it depends on the amount of matter, so the more liquid there is (assuming everything else is constant), the more thermal energy there will be.

what mass of sodium chromate in grams is needed to produce
5.17
mol
of sodium nitrate?

Answers

The question is incomplete, complete question is :

For the following chemical reaction, what mass of sodium chromate in grams will be needed to produce 5.17 mol of sodium nitrate?

[tex]2AgNO_3 + Na_2CrO_4\rightarrow Ag_2CrO_4 + 2NaNO_3[/tex]

Answer:

418.77 grams of sodium chromate is needed to produce  5.17  mol es of sodium nitrate.

Explanation:

[tex]2AgNO_3 + Na_2CrO_4\rightarrow Ag_2CrO_4 + 2NaNO_3[/tex]

According to reaction, 2 moles of sodium nitarte is obtained from 1 mole of sodium chromate .

Then 5.17 moles of sodium nitarte will be obtained from :

[tex]\frac{1}{2}\times 5.17 mol=2.585 mol[/tex] of sodium chromate

Mass of sodium chromate :

[tex]2.585\times 162 g/mol=418.77 g[/tex]

418.77 grams of sodium chromate is needed to produce  5.17  mol es of sodium nitrate.

2nd part of the other one plz help

Answers

18. Reaction will occur.

19. Reaction Will occur.

20. Reaction will occur.

21. Reaction will occur.

22. Reaction won't occur.

23. Reaction will occur.

24. Reaction will occur.

25. Reaction won't occur.

Explanation:

The reaction rate of the metals with water, steam, acid, or hydroxides or their inert behavior towards them are noted in the metal activity series.

It contains all the metals one after the other which and the upper metal can replace the lower metal from its salt.

Calcium can replace hydrogen from acid, so the reaction will occur in 18. The products formed are calcium phosphate and hydrogen gas.

Chlorine is more reactive than bromine. So it can replace bromine from its salt to from bromine gas and magnesium chloride.

Aluminium can replace iron from its salt. So it will form aluminium oxide and iron metal. This reaction is used to obtain iron from ores.

Zinc can replace hydrogen from acid. So the products will be zinc chloride and hydrogen gas.

Chromium cannot displace hydrogen form water. So the reaction won't occur.

Tin can replace hydrogen form acid. So the reaction will proceed.

Magnesium will replace platinum from its salt. So magnesium oxide and platinum will form.

Bismuth cannot replace hydrogen from acid. So the reaction won't proceed.

If you have 1.50 ton of poppy seeds and measure out 20.00 mg of seeds to determine that the average mass is 2.0 mg/ 19 seeds, how many seed are there in your 1.50 ton of poppy seeds? Use 454 g = 1.00 pounds

Answers

Answer:

18098

Explanation:

An elastic spring stores 45 [j] of elastic potential energy when it is stretched by 2cm. what is the spring constant ?

Answers

Answer:

225000

N/m

Explanation:

Final answer:

The spring constant is 5 N/cm.

Explanation:

The equation for elastic potential energy is given as:

U = 1/2kx^2

Where:

U is the elastic potential energy in joulesk is the spring constant in N/cmx is the displacement of the spring in cm

In this case, we are given that the elastic potential energy is 45 J and the displacement is 2 cm. Substituting these values into the equation, we get:

45 J = 1/2k(2 cm)^2

Simplifying, we find:

45 J = 2k cm^2

Solving for k, we divide both sides by 2(2 cm)^2:

k = 45 J / 2(2 cm)^2

k = 5 N/cm

Therefore, the spring constant is 5 N/cm.

Which of the following is a pure substance made up of one type of atom?
A) bronze
B) lead
C) steel
D) brass

Answers

Answer:

B

Explanation:

The others are alloys and therefore do not appear on the periodic table

Lead is the correct answer as it is an element, which is a pure substance made up of one type of atom, unlike bronze, brass, and steel, which are alloys.

When asked which of the following is a pure substance made up of one type of atom, the correct answer is B) lead. An element is defined as a pure substance that cannot be broken down into simpler substances by chemical means and consists of one type of atom. Therefore, lead, which is an element, fits this description perfectly.

It's important to note that, unlike lead, bronze, brass, and steel are alloys, which are mixtures of two or more elements, with at least one being a metal. Bronze is an alloy of copper and tin, brass is an alloy of copper and zinc, and steel is an alloy typically made of iron and carbon. Each of these is not a pure substance because they contain more than one type of atom.

which trait is most likely a result of artificial selection

Answers

Answer:

Explanation:Artificial selection is distinct from natural selection in that it describes selection applied by humans in order to produce genetic change. When artificial selection is imposed, the trait or traits being selected are known, whereas with natural selection they have to be inferred. In most circumstances and unless otherwise qualified, directional selection is applied, i.e., only high-scoring individuals are favored for a quantitative trait. Artificial selection is the basic method of genetic improvement programs for crop plants or livestock (see Selective Breeding). It is also used as a tool in the laboratory to investigate the genetic properties of a trait in a species or population, for example, the magnitude of genetic variance or heritability, the possible duration of and limits to selection, and the correlations among traits, including with fitness.

Wheat plants that produce much larger grains are most likely a result of artificial selection. Therefore, option C is correct.

What do you mean by artificial selection ?

Artificial selection, also known as "selective breeding”, is where humans select for desired traits in agricultural products or animals, rather than leaving the species to germinate and alter gradually without human interference, like in natural selection.

Agriculture has traditionally utilised artificial selection to breed crops and animals with desired features. Today's meats are the result of carefully bred birds, cattle, sheep, and pigs.

By artificial selection, several fruits and vegetables have been enhanced or even invented.

Thus, Wheat plants that produce much larger grains are most likely a result of artificial selection, option C is correct.

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Your question is incomplete, most probably your question was

which trait is most likely a result of artificial selection?

A. Chickens, cattle, lambs, and pigs have been selectively bred to produce the available meats we eat today.

B. Artificial selection has enhanced or even developed several fruits and vegetables.

C. Wheat plants that produce much larger grains

D. all of the above

I NEED HELP
Write a mathematical equation showing that pressure (P) multiplied by volume (V) remains equal to a constant (k).

Answers

The mathematical equation showing that pressure (P) multiplied by volume (V) remains equal to a constant (k).

Explanation:

We have different gas laws that shows the relationship between pressure , volume , moles and temperature of a gas .

The gas laws that we generally study are :

Boyle's law Charle's Law Avogadro's Law Gay lussac's law and many more .

Let us study about Boyle's Law :

According to it at constant temperature , the volume of a gas varies inversely with the pressure applied on a  gas .

That is : P∞1/v

Or, PV=K (constant )

If we a gas whose volume is changed from V₁ to V₂ and Pressure is changed from P₁ to P₂then we have :

P₁V₁=P₂V₂

[tex]K = PV[/tex] is the mathematical relation between the pressure and volume of the gas when K is given.

What is the relation between pressure and volume of gas?

At constant temperature, the volume (V)of an ideal gas is inversely proportional to the pressure(P) of the gas.

[tex]P = \dfrac 1V\\\\K = PV[/tex]

Where,

[tex]P[/tex]- the pressure of the gas

[tex]K[/tex] - gas constant

[tex]V[/tex] - the volume of gas

Therefore, [tex]K = PV[/tex] is the mathematical relation between the pressure and volume of the gas when K is given.

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After one half life, the ratio of parent atoms to daughter atoms in a sample is 1:2.
True or False

Answers

Answer:

                    False

Explanation:

                     As we know that half life of any substance is constant. The ratio of parent to daughter atoms after one half life will be 1:1, then after the second half life further half of the first half will decay and will produce more daughter and reduce more parent and making the ratio 1:3, the ratio after 3rd half life will be 1:7, then 1:15 and so on.

Let's suppose that we are given with 100 g of radioactive substance and we are calculating the mass of parent and daughter atoms after every half life as;

1/2 life             Mass of Parent             Mass of Daughter               Ratio

0                            100 g                                   0                            100:0

1                                50                                     50                            1:1

2                               25                                     75                             1:3

3                               12.5                                   87.5                           1:7

4                               6.25                                 93.75                         1:15

A major difference between a chemical reaction and a nuclear reaction is:
A) Anuclear reaction changes an atom's nucleus and chemical reaction loses/gains electrons.
B) A chemical reaction loses/gains electrons and a nuclear reaction loses/gains protons.
C) A nuclear reaction only uses elements and a chemical reaction only uses compounds.
D) A chemical reaction is exothermic and a nuclear reaction is endothermic.

Answers

Answer:

Explanation: is A

A major difference between a chemical reaction and a nuclear reaction is that a nuclear reaction changes an atom's nucleus and chemical reaction loses/gains electrons.

What are nuclear reactions?

There are two types of nuclear reactions which are nuclear fusion and nuclear fission .They involve the combination and disintegration of the element's nucleus respectively.

In nuclear fission, the nucleus of the atom is bombarded with electrons of low energy which splits the nucleus in to two parts .Large amount of energy is released in the process.It is used in nuclear power reactors as it produces large amount of energy.

In nuclear fusion,on the other hand, is a reaction which occurs when two or more atoms combine to form a heavy nucleus.Large amount of energy is released in the process which is greater than that of the energy which is released in nuclear fission process.

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Use the words blank to fill in the missing words in the sentences.

igneous metamorphic magma graphite

a) When hot _________ cools, igneous rocks are formed.

b) When _________ is under higher pressure and heat, it becomes diamond.

c) _________ rocks include pumice and granite and can be formed above Eath's surface.
d) _________ rocks are formed when existing rocks are changed inside Earth.

Answers

Answer:

When hot magma cools, igneous rocks are formed.

b) When graphite is under higher pressure and heat, it becomes diamond.

c) Igneous rocks include pumice and granite and can be formed above Eath's surface.

d) Metamorphic rocks are formed when existing rocks are changed inside Earth.

Explanation:

Magma is the molten rocks that is found inside Earth’s surface. Its the lava that is stored inside the Earth’s surface. This magma formes out of the Earth's surface during a volcanic eruption, or cools inside the Earth's surface itself to form igneous rock.

Graphite and diamond both are the allotropes of carbon. This is the change in allotropes which can occur in extreme cases of temperatures or pressure which can occur inside the Earth’s surface. This can change graphite to diamond.

Igneous rocks which are externally formed are pumice or basalt which forms when lava comes out of Earth's interior and cools to form rock. Whereas the Igneous rocks like granite are formed when the magma cools inside the Earth’s surface due to cooling of lava.

Metamorphic rocks are formed when the Igneous or sedimentary rocks undergoes conditions of severe temperature or pressure from inside the Earth's surface and the structure of the rock fully changes. This is how the metamorphic rocks form.

Answer:

a) When hot Magma cools, igneous rocks are formed.

b) When Graphite is under higher pressure and heat, it becomes diamond.

c) Igneous rocks include pumice and granite and can be formed above Earth's surface.

d) Metamorphic rocks are formed when existing rocks are changed inside Earth.

Explanation:

Graphite is a form of carbon element,it gets converted in diamond when it is subjected to very high pressure (> 100 kbar) and temperatures ( > 2000°C).Igneous rock are formed when the hot magma cools and gets solidifies and they are Metamorphic rock is formed  due to physical or chemical changes on a Pre-existing rock

Chemical reactions are used to produce a variety of products, such as

Answers

Answer:

chlorinesoap and detergentscleansing agentssynthetic fabricsplastic (PVC, bakelite, polyethylene)stealgasoline

Explanation:

Chemical reactions involve the transformation of substances, called reactants, by breaking some bonds and forming new bonds, to obtain different substances called the products.

In the chemical reactions the atoms of the reactants are rearranged giving rise to the products, which will contain the same atoms but bonded differently or even as separate elements.

Using chemical reactions the human being can, for example, produce chlorine from sodium chloride solutions (from the oceans). In the same reaction, caustic soda (sodium hydroxide, NaOH) and hydrogen gas (H₂), are produced as by-products.

The properties of the products of a chemical reaction are very different from those of the reactants: sodium chloride is consumed by the humans every day in almost every meal, while chlorine and caustic soda are lethal if human beings consume them in some way.

Some examples of the variety of products produced from chemical reactions include:

soap and detergentscleansing agentssynthetic fabricsplastic (PVC, bakelite, polyethylene)stealgasoline

The list could be huge, because most of the things that the human being use are manufactured using chemical reactions.

calculate the molecular mass of Na2HPO4

Answers

Answer:

Molar mass of Na2HPO4=141.96, of Na2HPO4. 12H2O = 358.14: so to get the same 0.4 M: 28.65/358.14*141.96 g, add water until you reach 200ml , dissolve all solid and then filter to make sterile.

Explanation:

141g/mol is the molecular mass of Na[tex]_2[/tex]HPO[tex]_4[/tex].  It is also known as molecular weight. It is computed by multiplying the mass of every atom.

What is molecular mass?

The quantity of mass associated with such a molecule is referred to as its molecular mass. It is also known as molecular weight. It is computed by multiplying the mass of every atom by the amount of atoms from the element in the molecule. Water, for example, is composed of two hydrogen atoms and one oxygen atom.

The total of the atomic weight of the atoms within a molecule yields the molecule's molecular mass. The molecular mass expresses the mass of such a molecule in relation to the mass of both the 12C atom, which itself is assumed to be 12.

Molecular mass = Molar mass of sodium×2+ molar mass of hydrogen + molar mass of phosphorus+ 4 molar mass of oxygen

Molecular mass = 23×2+1 + 30+ 4× 16=141g/mol

Therefore, 141g/mol is the molecular mass of Na[tex]_2[/tex]HPO[tex]_4[/tex].

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Which of these outcomes is conclusive evidence that mixing sugar in water is a physical change?
A. There is no change in color.
B. There is no precipitate formed.
C. There is no gas given off.
D. There is no molecular chan

Answers

Answer:

a. there is no change in color

also when you mix sugar in water it dissolves which is a physical change :)

[Help] i am doing a crossword and it is a four letter word - _o_ _ the question is (scientist who developed the planetary model of the atom)

Answers

Neils Bohr

Development of the Atomic Theory. In 1913, Neils Bohr, a student of Rutherford 's, developed a new model of the atom. He proposed that electrons are arranged in concentric circular orbits around the nucleus. This model is patterned on the solar system and is known as the planetary model.

Answer: Neils Bohr

Explanation:  In 1913, Neils was a student of Rutherford 's. He developed a new model of the atom. He explained that electrons are orignized in concentric circular orbits around the nucleus. This model is patterned on the solar system and is known as the planetary model.

go to abcte.org


Sulfur and Chlorine gas combine to form disulfurdichloride according to the following synthesis reaction:

S8 + 4Cl2 → 4S2Cl2

If we are given 100. g of Cl2 and 200. g of S8, what is the limiting reactant? What is the actual calculated mole ratio?
A) Cl2; 1.81:1
B) S8; 1.81:1
C) Cl2; 4:1
D) S8; 4:1

Answers

Answer:

A) Cl2; 1.81:1

5x-13 =12 write description that represents the equation

Answers

Answer:

x = 5

Because 12 + 13 = 5x

25 = 5x

x = 5

Answer:

5

Explanation:

Mary had 5 dollars she owe her friend Mia 13 dollars but she didn't have enough. so multiply how much she has to give to mia

When a turtle is lying on a sunny riverbank,how is it’s body temperature affected when it starts swimming in a cool river

Answers

Answer:

When a turtle is lying on a sunny riverbank, it’s body temperature rises and when it starts swimming in a cool river, it's body temperatures drop.

Explanation:

Cold-blooded animals, like turtles, do not have an internal feedback loop that regulates constant body temperature – as warm-blooded animals do. Their body temperatures fluctuate with that of the environment. This is why you see animals like lizards basking on rocks to raise their body temperatures. When it too hot, then they seek the shade under these rocks to lower their temperatures.

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As you drive away from a radio transmitter, the radio signal you receive from the station is shifted to longer wavelengths. (T/F) An imbalance in the presentation of the content can decrease the __________of a website.Website Development Process: Mastery Test which of the following are accurate statements regarding country conditions select all that apply. (2 points)A.County Commission members are elected by County votersB.every County in Georgia has 11 commissionersC.the County Commission has a combination of legislative and executive powerD.County Court judges are appointed by the governor What three mechanisms regulate the heart On a hot sunny day, you get out of the swimming pool and sit in a metal chair, which is very hot. Would you predict that the specific heat of the metal is higher or lower than that of water? Explain. Which would be the MOST appropriate topic for an informational essay? A) How to Make a Home Safe for Pets B) Why Capital Punishment is Unjust C) Vote for Nationalized Health Care D) The Most Valuable Lesson I've Ever Learned An elevator is moving upward at a constant speed of 2.50 m/s. A bolt in the elevator ceiling 3.00 m above the elevator floor works loose and falls. (a) How long does it take for the bolt to fall to the elevator floor? What is the speed of the bolt just as it hits the elevator floor (b) according to an observer in the elevator? (c) According to an observer standing on one of the floor landings of the building? (d) According to the observer in part (c), what distance did the bolt travel between the ceiling and the floor of the elevator? Oscar Lewis was the first to suggest that, because they are excluded from mainstream social life, the poor develop a way of life with fundamentally different values and goals, which makes it much less likely that they will ever join the middle class. This way of life is usually called ________ With a simple interest rate of 12%, how much will an investment of $20,000 be worth in 10 years What is the antecedent for the word him A yo-yo with a mass of 0.075 kg and a rolling radius of 2.50 cm (the distance from the axis of the pulley to where the string comes off the spool) rolls down a string with a linear acceleration of 6.50 m/s2. Approximate the rotational inertia of the yo-yo with that of disk with mass, m, and radius, r, rotating about its center (mr2/2). Calculate the tension in the string. In any particular place on Earth, certain constellations are visible in the evening only at certain times of the year because _________.A) during some times of year, some constellations drop below the southern horizonB) some constellations are circumpolarC) on any particular night, we can only see stars that are directly opposite (180 degrees away from) the Sun in the skyD) our evening view of space depends on where Earth is located in its orbit around the Sun What is the answer A regular pentagon is dilated by a scale factor of 73 to create a new pentagon. How does the perimeter of the new pentagon compare with the original perimeter? _______ is the study of how living things interact with each other and their environment Next, write a half-page essay comparing and contrasting a modern song and musician you admire with one of the songs you listened to above. Can you hear any connections between the two? Has traditional folk music influenced popular music in any way? Explain your response through your examples. What is the purpose of the traditional folk music you chose and the modern song you chose? How do these two songs represent the particular cultures they originate from? In a survey of 545 human resource professionals, each was asked about the importance of the age of a job applicant. The survey subjects were randomly selected by pollsters from a reputable market research firm. Luna mixes 2 cup of orange juice with 2 cup of cranberry juice. She givescup of the juice to Mags. How much is left in Luna's glass? A female fly, full of fertilized eggs, is swept by high winds to an island far out to sea. She is the first fly to arrive on this island and the only fly to arrive in this way. Thousands of years later, her numerous offspring occupy the island, but none of them resembles her. There are, instead, several species, each of which eats only a certain type of food. None of the species can fly and their balancing organs (halteres) are now used in courtship displays. The male members of each species bear modified halteres that are unique in appearance to their species. Females bear vestigial halteres. The ranges of all of the daughter species overlap.If the males halteres have species-specific size, shape, color, and use in courtship displays, and if the species ranges overlap, then the speciation events may have been driven, at least in part, by which of the following?A) autopolyploidyB) allopolyploidyC) species selectionD) sexual selectionE) habitat differentiation NEED HELP ASAP!!!!!!Heat is distributed through the atmosphere by windsTrueFalseThe geosphere includes only the rocks sitting on the surface of the planet.TrueFalseA tropical storm is an example of what two spheres of the earth interacting?A.atmosphere and hydrosphereB.geosphere and cryosphereC.biosphere and atmosphereD.cryosphere and atmosphereThe biosphere includes all of the fish that are in the ocean. Even though the ocean is part of the hydroshere.TrueFalseThe atmosphere controls and distributes heat.TrueFalseOne way the geosphere could affect the atmosphere is?A. The oceans evaporateB. a rock falls off a cliffC. rain runs down a mountain and into the river which eventually makes it's way to the ocean.D. A volcano erupts and throws gas into the atmosphere.