Explanation:
1) Newton's first law of motion states: "an object in motion stays in motion, and an object at rest stays at rest, until acted upon by an unbalanced force."
When you're riding in a car, your body is moving forward. When the car turns left, your inertia keeps you moving forward. This means the car moves left from underneath you, which makes it feel like you're moving to the right, even though there's no net force pushing you.
2) When you're standing on the ground, the Earth's gravity pulls on you with a force equal to your weight. You push back on the Earth with an equal and opposite force called "normal force".
How many joules is one calorie?
375 kJ is added to a 25.0 kg granite rock. How much does the temperature increase? NEED HELP SOLVING
Final answer:
To find the temperature increase, you can use the formula Q = m * c * ΔT, where Q is the heat energy added, m is the mass of the object, c is the specific heat capacity, and ΔT is the change in temperature. In this case, the temperature increases by 600 °C.
Explanation:
To find the temperature increase, we can use the formula:
Q = m * c * ΔT
where:
Q is the heat energy added,m is the mass of the object (in kg),c is the specific heat capacity of the material (in J/kg · °C),ΔT is the change in temperature (in °C).In this case, we have:
Q = 375 kJ = 375,000 J (since 1 kJ = 1000 J),m = 25.0 kg,c = specific heat capacity of granite.Using the formula, we can calculate the temperature increase as follows:
ΔT = Q / (m * c)
ΔT = (375,000 J) / (25.0 kg * 0.79 J/g · °C)
ΔT = 600 °C
Therefore, the temperature increases by 600 °C.
In a single replacement reaction, what will a metal always replace?
A metalloid
B nonmetal
C metal
Answer: Option C. metal
Explanation:
In a single replacement or displacement reaction, metals that are higher in activity series will displace those lower in activity
1. What type of evidence shows that, indeed, "there is more to perception than meets the senses?
Perception involves more than just sensory input; it includes interpretation by the brain, as evidenced by the existence of optical illusions, philosophical arguments, and conditions like synesthesia which demonstrate complex brain functions involved in perceiving the world.
Explanation:Evidence for Perception Beyond SensesThe concept that there is more to perception than what our senses can detect is supported by a variety of evidence. It is important to realize that perception is a cognitive process that involves interpreting sensory information, rather than just receiving it passively. The phenomenon of illusions serves as evidence that perception can lead to misinterpretation of sensory inputs. For example, optical illusions often show that what we perceive does not always match the physical reality of what we are sensing, suggesting that our brain is involved in constructing our experiences of the world to a greater degree than we might assume.
Philosophers like Russell and Moore highlight that our beliefs about the world are mediated through and sometimes limited by our sensory experiences, which are subject to error due to limitations or malfunctions in our sense organs or interpretations by the brain. G.E. Moore’s argument about the evidence of a hand existing simply because we can perceive it without further proof is an example of direct realism and points to our reliance on perception for evidence of the external world, yet acknowledges that there is a degree of trust involved in the acceptance of sensory evidence. Furthermore, the concept of homeostasis and allostasis in relation to emotions and reason, shows that our state of mind and body can influence how we interpret sensory information.
Interestingly, the existence of phenomena like synesthesia, where stimulation of one sensory or cognitive pathway leads to automatic, involuntary experiences in a second sensory or cognitive pathway, suggests that perception is not purely a direct function of the senses, but can involve more complex brain functions that combine different types of sensory data into unique perceptual experiences that are not directly linked to the external stimuli.
Explain using words or visuals how minerals originally found in magma could travel
through the rock cycle and eventually end up in each of the three main classifications
of rocks. Describe what patterns must occur for each rock type to change into another.
Include any surface and sub-surface events that can be a contributing factor to the
rock cycle. SC.7.E.6.2
Answer:
Explanation:
Magma is a molten and semi-molten rock mixture found under the surface of the Earth. This mixture is usually made up of four parts: a hot liquid base, called the melt; minerals crystallized by the melt; solid rocks incorporated into the melt from the surrounding confines; and dissolved gases. When magma is ejected by a volcano or other vent, the material is called lava. Magma that has cooled into a solid is called igneous rock. Magma is extremely hot—between 700° and 1,300° Celsius (1,292° and 2,372° Fahrenheit). This heat makes magma a very fluid and dynamic substance, able to create new landforms and engage physical and chemical transformations in a variety of different environments. How Magma Forms Earth is divided into three general layers. The core is the superheated center, the mantle is the thick, middle layer, and the crust is the top layer on which we live. Magma originates in the lower part of the Earth’s crust and in the upper portion of the mantle.
Molted magma comes outside Earth's surface and formed igneous rocks. Due to natural decay, this igneous rocks forms sedimentary rocks and due to changes of temperature, pressure and chemical changes both of the rocks transforms into metamorphic rocks.
What is rock cycle?A fundamental idea in geology, the rock cycle illustrates how the three primary types of rocks—sedimentary, metamorphic, and igneous—change over the course of geologic time.
When a rock is pushed out of its equilibrium circumstances, it changes. For instance, an igneous rock like basalt may disintegrate and evaporate when exposed to air or melt when it is subducted beneath a continent.
Rocks do not stay in an equilibrium state; rather, they change as they interact with new environments because of the driving forces of the rock cycle, plate tectonics, and the water cycle.
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Compare a cup of hot coffee with the Pacific Ocean. Which statement about thermal energy and temperature is correct?
OA. Water in the Pacific Ocean has more thermal energy and a higher temperature.
OB. Water in the Pacific Ocean has less thermal energy and a lower temperature.
C. Water in the Pacific Ocean has less thermal energy and a higher temperature
OD. Water in the Pacific Ocean has more thermal energy and a lower temperature.
Answer:
D- Water in the Pacific Ocean has more thermal energy and a lower temperature.
Explanation:
The Pacific Ocean had much more quantity compared to a cup of hot coffee.
The cup of coffee has a higher temperature due to direct heating, although the Pacific Ocean has more thermal energy because of its great mass.
Socrates believed that
Answer:
Socrates believed that one as a matter of fact must concentrate more on self development than on material things. He encouraged people to engage in developing friendships and love among themselves.
Answer:
B. (Mind and body are inseperable).
Explanation:
Sound waves strike a glass and cause it to shatter because of what?
Answer:
Sound waves strike a glass and cause it to shatter. This illustrates what phenomenon? the angle at which a wave strikes a reflective medium (the angle of incidence, or theta_i) is equal to the angle at which a wave reflects off the medium (the angle of reflection)
The ability of atoms to attract electrons in chemical bonds is called
________.
A. swarming
B. ionization energy
C. electronegativity
D. electronic shielding
Answer:
C) Electronegativity
Three forces act on an object (at the origin of a rectangular coordinate system). Force one, F1, has a magnitude of 5.81 N and a direction Theta1 = 77.0 degrees, force two, F2, has a magnitude of 4.88 N and a direction of Theta2, = 156 degrees, and a force three F3, has a magnitude of 4.52 N and a direction of Theta 3 = 289 degrees. add these three vectors using the component method of vector addition. Call the resultant vector F and write the answer in component form (ie using unit vectors). then calculate the magnitude and direction of the vector F.
Answer:
F = -1.682 i + 3.374 j [N] ; F = 3.77[N]; α = 65.78°
Explanation:
In order to be able to understand this problem more easily, we will have to draw the vectors at the point of origin and in this way, with the help of the angles we will be able to find each of the components of the forces.
Looking at the attached image we can see each of the three forces, take each force and decompose them into the x & y axes.
F1 = 5.81 [N]
[tex]F_{1x} = 5.81*cos(77) = 1.306[N]\\F_{1y} = 5.81*sin(77) = 5.66[N][/tex]
F2= 4.88 [N]
[tex]F_{2x}= - 4.88*cos(180-156) =-4.458[N]\\F_{2y}= 4.88*sin(180-156) =1.984[N][/tex]
F3= 4.52 [N]
[tex]F_{3x} = 4.52*cos(360-289)=1.47[N]\\F_{3y} = - 4.52*sin(360-289) = -4.27[N][/tex]
Now we can sum each of the forces in the different components
[tex]F_{x} =F_{x1}+F_{x2}+F_{x3} = 1.306-4.458+1.47 = - 1.682[N]\\F_{y} =F_{y1}+F_{y2}+F_{y3} = 5.66+1.984-4.27 = 3.374[N][/tex]
F = -1.682 i + 3.374 j [N]
The total magnitude can be calculated by Pythagoras theorem
[tex]F = \sqrt{(1.682)^{2}+(3.374)^{2} } \\F = 3.77 [N][/tex]
The direction can be calculates as follows:
tan(α) = 3.374/1.682
α = 65.78°
This angle was calculated with respect to the horizontal
_C7H16+ _O2 produces _CO2 +H2O
C₇H₁₆+11O₂⇒7CO₂+8H₂O
PLEASE HELP’!
A block of ice is sliding down a ramp made of ice that is 15° above the horizontal. What is the
acceleration of the block?
Answer:
a= g sinθ
Explanation:
Given that
Angle ,θ = 15° (from the horizontal)
Lets take the mass of the block = m
The acceleration due to gravity = g
The acceleration of the block = a
When block slide down :
The gravitational force on the block = m g sinθ
By using Newton's second law
F= m a
F=Net force ,a acceleration ,m=mass
m g sinθ = ma
a= g sinθ
Therefore the acceleration of the block will be g sinθ.
How does the unbalanced force of gravity affect the horizontal and vertical velocities of an object in projectile motion?
Answer:
A projectile is an object upon which the only force is gravity.
Explanation Gravity acts to influence the vertical motion of the projectile, thus causing a vertical acceleration. The horizontal motion of the projectile is the result of the tendency of any object in motion to remain in motion at constant velocity.
Final answer:
Gravity affects the vertical motion of a projectile by imparting a constant downward acceleration of 9.8 m/s², while the horizontal motion remains constant and independent of this vertical force. Consequently, the horizontal and vertical velocities of an object in projectile motion are influenced separately by gravity.
Explanation:
The unbalanced force of gravity affects the horizontal and vertical velocities of an object in projectile motion by impacting them independently. Gravity causes a constant vertical acceleration of 9.8 m/s² (downwards) that does not influence the horizontal motion, which remains constant if air resistance is ignored. The horizontal motion of an object in projectile motion is independent of its vertical motion because the force of gravity only acts downwards.
Projectile motion is interesting to study since it involves two independent components of motion: horizontal and vertical. An example of this independence is that the time it takes for a horizontally launched projectile to hit the ground is determined solely by its vertical motion, unaffected by its horizontal velocity.
During projectile motion, at the peak of its trajectory, the projectile has only a horizontal velocity component and effectively resembles uniform circular motion for an instant, since gravity acts perpendicular to the motion.
Please help with this AP Physics 1 problem
Answer:
i) kinetic friction; ii) The friction force always acts in the opposite direction to the movement of the surface where friction exists.
Explanation:
Part i )
At that time the type of friction that exists is kinetic, as there is movement by the wheel. At the moment when the wheel remains in rest over the inclined plane, the friction force which would be used will be the static force.
Part ii)
The friction force always acts in the opposite direction to the movement of the surface where friction exists. It is not opposed to the sense of movement. In order for the wheel to rise on the inclined plane, it must turn to the right, that is to say in the clockwise direction, therefore the friction force must go in the opposite direction to the rotation of the wheel, that is to say, go in the opposite direction to the movement of the surface under friction effect, that is why it points in the same direction of displacement of the wheel.
According to Newton's Brd Law, an object's momentum depends on it's velocity and mass, 4 dog-sled teams
competed to see who could gain the greatest momentum. All 4 sled and driver teams were the same mass, but
each driver had to select a passenger to carry as part of the challenge. Each passenger was a different mass
Which sled team had the greatest momentum at the finish line?
A
Sled Team A 48 kg moving at 10m/5
Sted Tem
C
ving-at-18mts
Sled Team C 28 kg moving at 12m/s
D
Sled Team D 22 kg moving at 12 m/s
Answer:
Team A has the greatest momentum
Explanation:
The momentum of an object is a vector quantity given by
[tex]p=mv[/tex]
where
m is the mass of the object
v is its velocity
In this problem, we have to compare the momenta of the different sleds.
We have:
A) Sled Team A 48 kg moving at 10m/s:
m = 48 kg
v = 10 m/s
p = (48)(10) = 480 kg m/s
B) Sled Team B 14 kg moving at 18m/s
m = 14 kg
v = 18 m/s
p = (14)(18) = 252 kg m/s
C) Sled Team C 28 kg moving at 12m/s
m = 28 kg
v = 12 m/s
p = (28)(12) = 336 kg m/s
D) Sled Team D 22 kg moving at 12m/s
m = 22 kg
v = 12 m/s
p = (22)(12) = 264 kg m/s
So, team A has the greatest momentum.
an object with a kinetic energy of 2160 J has a new mass of 120kg. What is it's velocity?
Answer:
The velocity is 6 m/s
Explanation:
We use the formula of kinetic energy=
Ec= 1/2 x m x v2
2160 J = 1/2 x 120 kg x v2
v =[tex]\sqrt[n]{x} 2160Joulex2/120kg\\[/tex]
v= 6m/s
1Joule= 1 kgm2/s2
A 0.500 kg mass is oscillating on a
spring with k = 330 N/m. The total
energy of its oscillation is 3.24 J.
What is the maximum speed of
the mass?
(Unit = m/s)
Answer: E = kA2/2 ⇒
A = √(2E/k) = √[2(3.24)/330] m = ? m
Explanation: Equate the elastic potential energy at the amplitude to the total energy of the mass. The answer will not depend on the mass.
Answer:
3.6
Explanation:
A car with the mass of '800 kg is moving at a velocity of 34 m/s. What is 10 points
the kinetic energy? *
462400)
27200)
O 24;
0
400)
Answer:462400joules
Explanation:
Mass=m=800kg velocity=v=34m/s
Kinetic energy=(m x v^2)/2
Kinetic energy =(800x34^2)/2
Kinetic energy =(800x34x34)/2
kinetic energy =924800/2
Kinetic energy =462400joules
How can hypotheses best be tested?
by asking questions
through experimentation
by forming an opinion
through technology
In a scientific investigation, hypotheses best are tested through experimentation because the result of the experiment confirms the validation of the theoretical hypothesis formed while framing the problem statement, therefore the correct answer is option B.
What is scientific investigation?Scientific investigation is the process of looking for answers by doing extensive research and finding the answers through experimental results.
The greatest way to test a hypothesis in scientific research is through an experiment since the outcome validates the theoretical hypothesis made while defining the issue statement.
Thus, the correct answer is option B.
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A bicyclist slow with a force of 3.5 x 10^2 N. if the bicyclist and bicycle have a total mass of 1.0 x 10^2 kg, what is the acceleration
Answer:
Acceleration = 3.5 [m/s^2]
Explanation:
We can solve this problem using Newton's second law, which states that the sum of forces on a body is equal to the product of the mass by the acceleration
F = 350 [N]
m = 100 [kg]
Using Newton's second law we have:
F = m*a
where:
F = force [N]
a = acceleration or desacceleration [m/s^2]
therefore:
a = 350/100
a = 3.5 [m/s^2]
what’s 3 times 10 to the 8th power divided by 2.45 times 10 to the 9th power
0.12244898 is the value obtained when solving the given.
Explanation:
Given:
3 times 10 to the 8th power can be expressed in equation format as [tex]3 \times 10^{8}[/tex] (3 times symbolizes ‘multiplication’ then it is to the tenth power of 8)
2.45 times 10 to the 9th power can be expressed in equation format as [tex]2.45 \times 10^{9}[/tex] (2.45 times symbolizes ‘multiplication’, then it is to the tenth power of 9)
Asked to find the solution when dividing the above,
[tex]\frac{3 \times 10^{8}}{2.45 \times 10^{9}}=\frac{3}{2.45} \times 10^{8-9}[/tex]
When the tenth power of any value goes from denominator to numerator and vice-versa, presents in opposite sign to that it possess (like when ‘[tex]10^{9}[/tex] ' goes to numerator changed as ' [tex]10^{-9}[/tex] ').
Now by solving the above equation, we get
[tex]\frac{3}{2.45} \times 10^{8-9}=1.22 \times 10^{-1}=\frac{1.22}{10}=0.12244898[/tex]
how much energy (in joules) is needed to raise the average temperature of all the water in the tank by 1°C?
Answer:Quantitative experiments show that 4.18 Joules of heat energy are required to raise the temperature of 1g of water by 1°C.
Explanation:
What causes sedimentary rock to change into metamorphic rock
Sedimentary rock changes when it is exposed to extreme heat and pressure, but it can be caused by tectonic plate movement ( for heat ) and when the collide, you get the pressure.
Hope this helps, if not, comment below please!!!!
Sedimentary rock changes when it is exposed to extreme heat and pressure, but it can be caused by tectonic plate movement ( for heat ) and when the collide, you get the pressure.
Hope this helps, if not, comment below please!!!!
object is placed 15cm in front of a plane mirror. If the mirror is moved further 5cm away from the object and the image is
Answer:
The image will most likely be 20cm in front the mirror since the mirror was placed further 5cm.
3) Coach Pope rolls marble off the table with a horizontal velocity of 7 m/s. The marble lands 15 m
away from the table. How high above the ground was the marble launched.
Answer:
h = 2.5m
Explanation:
Find the sum of the vectors:11 km N ,11km E
The resultant vector is 11√2 km due north east.
Explanation:The vector is a type of quantity which has both magnitude and direction. This quantities when expressed needs to specify both magnitude and direction.
We need to calculate the magnitude and direction separately.
Here firstly for the magnitude,
The magnitudes are both 11 km and they are at right angles to each other.
So, the resultant magnitude = √(11² +11²) km
=11√2 km
Now for the direction, one vector is due north and the other is due east.
So the resultant vector is due north east.
So the final vector is 11√2 km due North-East.
What would be a reason for greater caution. 100,000 ohms or 100,000 volts
A designation of 100000 volts is a need for greater caution. The voltage is a unit of the potential different by which a given amount.
A student fires a cannonball horizontally with a speed of 39m/s from a height of
73m. Neglect drag.
What was the cannonball's initial horizontal speed?
What was the cannonball's initial vertical speed?
How long did the ball remain in the air?
How far from the base of the building will the ball land (measured along the
ground)?
Explanation:
The initial horizontal speed is 39 m/s, and the initial vertical speed is 0 m/s.
v₀ₓ = 39 m/s
v₀ᵧ = 0 m/s
In the y direction:
Δy = 73 m
v₀ᵧ = 0 m/s
aᵧ = 9.8 m/s²
Find: t
Δy = v₀ᵧ t + ½ aᵧt²
73 = 0 + ½ (9.8) t²
t = 3.9 s
In the x direction:
v₀ₓ = 39 m/s
aₓ = 0 m/s²
t = 3.9 s
Find: Δx
Δx = v₀ₓ t + ½ aₓt²
Δx = (39) (3.9) + 0
Δx = 150 m
The initial horizontal speed of the cannonball is 39 m/s, its initial vertical speed is 0 m/s, it remained in the air for approximately 3.86 seconds, and it landed about 150.3 meters from the base of the building.
Explanation:The cannonball's initial horizontal speed is the speed at which it was fired, which is 39 m/s. Since the cannonball was fired horizontally, its initial vertical speed is 0 m/s.
To find out how long the ball was in the air, we need to use the equation of motion. With the use of the formula for the time of flight for a vertically projected body (t = √(2h/g)), where h is the height from which the cannonball was dropped, and g is the acceleration due to gravity, which is 9.8 m/s², we get t = √(2*73/9.8) = 3.86 seconds.
Finally, to find the distance along the ground, we multiply the time in the air by the horizontal speed (because the horizontal velocity stays consistent in a vacuum), so we get 39 m/s * 3.86 seconds = 150.3 meters.
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This is used by scientists to measure time and events during earth history
Answer: Scientists used relative dating and absolute dating.
Explanation:
Scientists used absolute dating to determine the actual number of years ago that events happened. They used relative dating to divide Earth's past into several time frames when similar organisms were on Earth.
This is used by scientists to measure time and events during Earth's history.
Answer : Geologic Time
Which two atmospheric gases do not react with many substances?
A.
Oxygen (O2)
B.
Argon (Ar)
C.
Nitrogen (N2)
D.
Carbon dioxide (CO2)
Answer:
the answer is B ( Argon (Ar) )
Answer:C and B
Explanation:
i hope this helps