As a truck rounds a curve, a box in the bed of the truck slides to the side farthest from the center of the curve. This movement of the box is a result of .
The correct option is inertia just took the test on edge.

The frequency of a  wave oscillates 5.0 times a second and has a speed of 4.0m/s is F=5Hz

Question Parameters:

A wave oscillates 5.0 times a second and has a speed of 4.0m/s

Generally, the equation for the Frequency is mathematically given as

F=v/\lambda

Or

F=1/T

Therefore

Frequency is simply the amount of times the wave oscillates

In conclusion, The frequency of the wave is

F=5Hz

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Final Answer:

The frequency of the wave is 5.0 Hz.

Explanation:

The frequency of a wave is the number of oscillations it makes per second. In this case, the wave oscillates 5.0 times a second, so the frequency is 5.0 Hz. The frequency of a wave is a fundamental characteristic determined by the number of oscillations it completes in one second. This measurement, expressed in hertz, represents the cycles or oscillations per second. It is a crucial parameter in understanding wave behavior and is essential in various fields such as physics, telecommunications, and engineering. The relationship between frequency, speed, and wavelength is described by the wave equation, where frequency and speed are inversely proportional.

Option D

The resistance in machine is 8.5 ohms

Solution:

Given that,

Power = 1700 W

Voltage = 120 V

We have to find the resistance in machine

The formula used is:

[tex]P = \frac{V^2}{R}[/tex]

Where,

"P" is the electric power and "V" is the voltage and "R" is the resistance

Substituting the given values we get,

[tex]1700 = \frac{120^2}{R}\\\\1700 = \frac{14400}{R}\\\\R = \frac{14400}{1700}\\\\R = \frac{144}{17}\\\\R = 8.47 \approx 8.5[/tex]

Thus resistance in machine is 8.5 ohms

Answer:150Nm

Explanation:

Force=50.0N distance=3.00m

Work=force x distance

Work=50 x 3

Work=150Nm

Yes, Water and wind can change the shape of a mountain through the process of erosion. The mountains' sharp peaks and edges evolve from these erosive forces rather than their initial formation. In contrast, the Moon's mountains remain smooth because of the lack of water and wind erosion.

Yes, water and wind can indeed change the shape of a mountain. Through the process of erosion, elements such as water and ice weather the rocks of mountain ranges, reshaping their profiles over time. For instance, the sharp peaks and serrated edges of mountains are not the direct result of the forces that initially upthrust the crust to form the ranges; instead, these features develop from erosional processes that gradually tear down the mountains. Ice erosion, in particular, acts as a powerful sculptor of mountainous terrain.

Additionally, mountain grasses are influenced by strong winds, which can bend them and alter the landscape over time. During different times of day, mountain-valley winds occur due to temperature variations that cause air to rise or fall along mountain slopes, which can also impact the mountain's shape gradually. The same is true for ocean waves, which wear away the land and change the shapes of coastlines. The formation of the 'The Wave' at Vermillion Cliffs, along the Utah and Arizona border, is an example of how erosion by water and wind can sculpt landforms.

Contrasting with the earth, the Moon provides an example of how mountains look when they are not sculpted by these erosive forces. The Moon's highlands have a smooth and dulled appearance due to the absence of water and wind erosion, offering a stark comparison to Earth's dynamic erosive processes.

Answer:

B. 150 minutes per week

Explanation:

American Heart Association suggests at least 150 minutes per week of moderate-intensity aerobic activity to adults.

Answer:

1

Explanation:

If you take a look on a periodic table of elements, you will notice that hydrogen has the atomic number of 1. This number directly corresponds to the number of electrons an atom has.

Let me know if you have any other questions!

A neutral hydrogen atom has exactly one electron orbiting its nucleus. This electron is situated in the 1s orbital, part of the atom's valence shell, highlighting hydrogen's unique position in the periodic table and its ability to bond with other elements.

A hydrogen atom consists fundamentally of a nucleus and one electron orbiting this nucleus. When we discuss a neutral hydrogen atom, we refer to an atom where the number of protons (positively charged particles within the nucleus) is equal to the number of electrons (negatively charged particles orbiting the nucleus). Since hydrogen is the first element in the periodic table, it has exactly one proton in its nucleus. Consequently, to maintain electrical neutrality, a hydrogen atom also has exactly one valence electron. This electron occupies the 1s orbital, the closest orbital to the nucleus, which is part of the hydrogen atom's n = 1 valence shell.

This shell can hold up to two electrons, showing hydrogen's potential to bond or interact with other atoms either by losing its electron to become a cation (H+) or by gaining an electron to form a hydride ion (H−), or it can share its electron to form a single covalent bond. Therefore, hydrogen is not only a group 1 element but also shares characteristics with group 17 elements due to its unique electron configuration.

Answer:

The correct answer is A.

Explanation:

A greater mass means a greater gravitational pull. To give Sphere C more gravitational pull you mus increase its mass

Answer:

AB 15×15=225

A<B false because A=B

the answer is c because A=B

If an object has a density greater than the liquid in which it is placed it will sink.

Explanation:

Density of the object can be known by its mass and volume.

If two objects have same volume but different masses it means the one having more mass will have higher density. Density is amount of mass per unit volume.

Objects that are tightly packed have higher density.

According to Archimedes' principle when a body is fully immersed that an upward buoyant force is equal to weight of the fluid that object displaces.

Objects with a greater density than a surrounding liquid will sink while objects with a lesser density will float, as explained by Archimedes' Principle.

If an object has a density greater than the liquid in which it is placed, it will sink. This can be explained by Archimedes' Principle, which suggests that an object's buoyancy or tendency to float is determined by the relative densities of the object and the fluid it is in. The denser an object is, the more weight it has for its size, which means it is less buoyant and more prone to sinking than floating.

For example, if you drop a stone (denser) in a pond, it will sink because its density is greater than that of water. On the other hand, ice, which is less dense than water due to its molecular structure, will float.

Alternatively, objects with a density less than the liquid they are placed in will float, like oil on water, hot air balloons in the atmosphere, or bits of cork in wine. This is because they displace more fluid weight than their own, creating a buoyant force that exceeds their own weight.

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Answer:c and d

Explanation:

i just looked it up and read

Answer:

Argon(Ar) and Nitrogen(N2)

Explanation:

Answer:

1-A

2-C

3-C

4-A

Explanation:

1.   waves

2.   visible light

3.   visible light

4.   bends

1. The electromagnetic spectrum contains many types of waves.

A) waves B) Objects C) Particles

An electromagnetic spectrum has frequency, from lowest to highest frequency, therefore including all radio waves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays.

2. The colors we see are all part of visible light.

A) X rays B) UV waves C) visible light

The light we are able to see is called the visible light spectrum, which ranges from violet light, having a wavelength of approx. 400 nanometers, to red light, having a wavelength of around 650-700 nanometers.

3. We can see because of visible light.

A) UV waves B) infrared light C) visible light

We are able to see because of the sunlight striking an object and reflecting back which moves through space and reaches our eyes.

4. When visible light passes through a prism or a drop of water, the light bends and we see a rainbow of color.

A) Bends B) Reflects C) Bounces

The rainbow effect occurs because when light strikes a water droplet, it is refracted at the boundary of air and water, and enters the droplet, where the light is dispersed into the seven colors, the light is then reflected inside the droplet and finally refracted out again into the air.

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Final answer:

To raise the temperature of 50.0 grams of water by 10.0 degrees Celsius, 2092 joules of energy are required, calculated using the specific heat capacity formula where the specific heat capacity of water is 4.184 J/g°C.

Explanation:

To calculate how much energy is required to raise the temperature of 50.0 grams of water by 10.0 degrees Celsius, we use the specific heat capacity formula:

q = mcΔT

where:

Substituting the given values:

q = (50.0 g) x (4.184 J/g°C) x (10.0 °C)

q = 2092 J

Therefore, it requires 2092 joules of energy to raise the temperature of 50.0 grams of water by 10.0 degrees Celsius.

Answer:875joules

Explanation:

Answer:

Imp = -4 [kg*m/s]

Explanation:

To determine the impulse we must know the initial speed and final velocity of the ball, that is before and after hitting the wall. As these data are given in the input information, we can very easily find the value of the impulse given during the hit on the wall.

[tex]m*v_{1}+Imp=mv_{2} \\Imp= m*v_{2}-m*v_{1}\\Imp = (2*4)-(2*6)\\Imp = -4[kg*\frac{m}{s} ] \\[/tex]

The negative sign means that the impulse is given in the opposite direction to the one that the ball was thrown.

The image on the poster emphasizes the importance of utilizing every minute of production time

An image is a graphic representation which often conveys a message. It has been a common practice to pass on important messages by the use of imagery.

From the image on the poster, the message conveyed is that; the image of a large clock next to an unproductive worker emphasizes the importance of utilizing every minute of production time.

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Answer: B

Explanation:

Answer:

a: radiation

b: convection

c: conduction

Explanaa:tion:

Answer:

a) P =392.4[Pa]; b) F = 706.32[N]

Explanation:

With the input data of the problem we can calculate the area of the tank base

L = length = 10[m]

W = width = 18[cm] = 0.18[m]

A = W * L = 0.18*10

A = 1.8[m^2]

a)

Pressure can be calculated by knowing the density of the water and the height of the water column within the tank which is equal to h:

P = density * g *h

where:

density = 1000[kg/m^3]

g = gravity = 9.81[m/s^2]

h = heigth = 4[cm] = 0.04[m]

P = 1000*9.81*0.04

P = 392.4[Pa]

The force can be easily calculated knowing the relationship between pressure and force:

P = F/A

F = P*A

F = 392.4*1.8

F = 706.32[N]

a). The pressure that lies on the base would be:

[tex]P =392.4[Pa][/tex]

b). The thrust that exists on the base would be:

[tex]F = 706.32[N][/tex]

a). Given that,

Length of the rectangular vessel [tex]= 10m[/tex]

The Breadth of the rectangular vessel [tex]= 18cm or 0.18m[/tex]

Area of the vessel [tex]= L[/tex] × [tex]B[/tex]

[tex]= 10[/tex] × [tex]0.18[/tex]

[tex]= 1.8m^2[/tex]

To find the pressure,

Pressure(p) = Density × g × h

With

Density [tex]= 1000 kg/m^3[/tex]

Gravity(g) = [tex]9.81m/s^2[/tex]

Height(h) = [tex]4 cm[/tex] or [tex]0.04m[/tex]

So,

P [tex]= 1000[/tex] × [tex]9.81[/tex] × [tex]0.04[/tex]

∵ [tex]P = 392.4[/tex]

b). Since,

Pressure [tex]= F/A[/tex]

⇒ [tex]F = P[/tex] × [tex]A[/tex]

⇒ [tex]F = 392.4[/tex] × [tex]1.8[/tex]

∵ Thrust or Force [tex]= 706.32 N[/tex]

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Answer:

D_momentum = 3.23[kg*m/s]

Explanation:

The change of moment can be easily determined by applying the principle of momentum and amount of movement

initial data are:

[tex]m_{1}=0.17[kg]\\ m_{2}=0.17[kg]\\v_{1}=54[m/s]\\v_{2}=35[m/s]\\D_{momentum}= m_{1}*v_{1}-m_{2}*v_{2}\\D_{momentum}=0.17(54-35)\\D_{momentum}= 3.23[kg*m/s][/tex]

Given values,

Mass,

Velocity,

We know,

→ [tex]D_{momentum } = m_1\times v_1-m_2\times v_2[/tex]

By putting the values,

                     [tex]= 0.17\times 54-0.17\times 35[/tex]

                     [tex]= 0.17(54-35)[/tex]

                     [tex]= 0.17\times 19[/tex]

                     [tex]= 3.23 \ kg.m/s[/tex]

Thus the above approach is right.                

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Image formed by concave mirror when an object is place less than one focal length away is a virtual image.

Explanation:

When an object is placed less than one focal length from concave mirror, the light rays from the same point on object reflect on the mirror and diverge. Hence causing the image formed to be magnified and virtual. The image must be found by extending the reflected beams in reverse direction of the mirror.The intersection point is the virtual image area. Similar concept can be used to explain why earth looks flat to someone near the ground.

Answer: 0.057 kg

Explanation:

We can find the mass of the oil if we know its density and the volume it occupies. Since the density [tex]\rho[/tex] is a relation between the mass [tex]m[/tex] and the volume [tex]V[/tex] of a substance:

[tex]\rho=\frac{m}{V}[/tex] (1)

Now, the density of oil is generally between [tex]700 \frac{kg}{m^{3}}[/tex] and [tex]950 \frac{kg}{m^{3}}[/tex]. However, in this case we will take [tex]950 \frac{kg}{m^{3}}[/tex] as its density.

In adition, we are given as data the volume thw oil occupies:

[tex]V=60 cm^{3} \frac{1 m^{3}}{(100 cm)^{3}}=6(10)^{-5} m^{3}[/tex]

Writing these values in (1):

[tex]950 \frac{kg}{m^{3}}=\frac{m}{6(10)^{-5} m^{3}}[/tex] (2)

Isolating [tex]m[/tex]:

[tex]m=0.057 kg[/tex] This is the mass of the oil

The spring has been stretched 0.701 m

Explanation:

The elastic potential energy of a spring is the potential energy stored in the spring due to its compression/stretching. It is calculated as

[tex]E=\frac{1}{2}kx^2[/tex]

where

k is the spring constant

x is the elongation of the spring with respect to its equilibrium position

For the spring in this problem, we have:

E = 84.08 J (potential energy)

k = 342.25 N/m (spring constant)

Therefore, its elongation is:

[tex]x=\sqrt{\frac{2E}{k}}=\sqrt{\frac{2(84.08)}{342.25}}=0.701 m[/tex]

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Answer:

Molecules speed up

Explanation:

This is caused because of the temperature increasing. The temperature increase is telling us that the thermal energy of the reaction is increasing. When the energy is increased molecules increase their speed, because they have more energy in them

Answer:

Molecules speed up

Explanation:

Answer:

Thermal energy is the part of internal energy that is capable of being transferred to other objects.

Explanation:

Thermal energy is capable of being transferred until the objects become the same temperature, called equilibrium.

The best description of the relationship between internal energy and thermal energy is thermal energy is the portion of internal energy that can be transferred. The correct option is d.

The energy present in a system that determines its temperature is referred to as thermal energy. Thermal energy flows as heat. Thermodynamics is a whole field of physics that studies how heat is transmitted between various systems and how work is performed in the process.

Heat is the component of thermal energy that may be transferred, and heat is the energy that moves within. In thermodynamics, the internal energy is a property or state function that characterizes a substance's energy in the absence of capillary effects and the impacts of external magnetic, electric, and other fields.

Therefore, the correct option is d, Thermal energy is the portion of internal energy that can be transferred.

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Answer:

(D) eight

Explanation:

In carbon dioxide (CO2), there are two oxygen atoms for each carbon atom. Each oxygen atom forms a double bond with carbon, therefore the molecule is formed by two double bonds. Two double bonds means that the total number of electrons being shared in the molecule is. eight.

Amplitude of oscillation is 0.33 m

Explanation:

Amplitude is the maximum displacement of points on a wave from the point of equilibrium. In the above question,mass attached to a spring of k=18.9N/m follows an oscillatory motion where ,

Angular frequency = [tex]\sqrt{k/m}[/tex] where k is the spring constant and m is the mass

Angular frequency =[tex]\sqrt{18.9/.250[/tex] = 8.69

Therefore ,amplitude is equal to velocity/angular velocity

A=2.89/8.69

 =0.33m

Hence , the amplitude of oscillation is 0.33 m.

Answer:

0.33

Explanation:

Most of the climate changes over the past 650000 years are attributed to global warming

Explanation:

Global Warming is the rise in the average temperature of the Earth's climate system over a time period. It leads to climate change.

Global warming is mainly caused by man, who by his actions causes an increase in the temperature on Earth.

The main way that he influences this phenomenon is, he is responsible for emission of greenhouse gases like  carbon di -oxide , methane and other gases.

This paves way for the sea level rising, Ice in Arctic regions melting, frequent extreme weather conditions.

In some areas there might be abundant rainfall and in other areas there might be drought.

The impact of global warming will be extinction of many species,  low crop yield.

Rising sea levels, will have an impact on people living in coastal areas.

So we have to do what we can to slow down the global warming and protect our environment and our Earth.

Answer:

Therefore the depth in the ocean at which the presser is three times atmospheric presser is 20.15 m.

Explanation:

The pressure at some depth

[tex]P=P_\circ +\rho gh[/tex]  

[tex]P_\circ=[/tex] atmospheric presser = [tex]1.013\times 10^5[/tex] Pa

[tex]\rho=[/tex] density of the sea [tex]= 1025 kg / m^3[/tex]

g = gravity = 9.81 m/s²

h = depth of the ocean

P= atmospheric presser at depth = [tex]3P_\circ[/tex]

Therefore

[tex]3P_\circ=P_\circ +\rho gh[/tex]

[tex]\Leftrightarrow \rho gh=2P_\circ[/tex]

[tex]\Leftrightarrow h=\frac{2P_\circ}{\rho g}[/tex]

[tex]\Leftrightarrow h=\frac{2 \times 1.013 \times 10^5}{1025 \times 9.81}[/tex]

[tex]\Leftrightarrow h= 20.15[/tex]

Therefore the depth in the ocean at which the presser is three times atmospheric presser is 20.15 m.