A ball is at rest at the top of a hill. It rolls down the hill. At the bottom of the hill the ball hits a wall and stops. Which energy changes occur? A) Gravitational potential energy, internal energy, kinetic energy B) Gravitational potential energy, kinetic energy, internal energy C) Kinetic energy, gravitational potential energy, internal energy D) Kinetic energy, internal energy, gravitational potential energy
Answers
Final answer:
The correct answer is C) Kinetic energy, gravitational potential energy, internal energy.
Explanation:
When the ball is at the top of the hill, it has gravitational potential energy because of its position. As it rolls down the hill, this potential energy is converted into kinetic energy, which is the energy of motion.
When the ball hits the wall at the bottom of the hill and stops, some of the kinetic energy is transformed into internal energy, which is the energy associated with the motion of particles within the ball.
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Related Questions
work of 4 joules is done in stretching a spring from its natural length to 11 cm beyond its natural length. what is the force (in newtons) that holds the spring stretched at the same distance (11 cm)
A wave with a wavelength of 15 m travels at 330 m/s. Calculate its frequency.
A rotating satellite has the same angular velocity as the earth. If the satellite is 5x10^7 m from the center of the earth, what is its tangential velocity
Gravitational pull must be measured in units of
Answers
Answer:
Explanation:
Given
Overall magnification
One lens magnification is
suppose the magnification of other lens is
A compound lens is made up of series of lenses either of same or of different magnification so
is given by
If lens is replaced by
lens then total magnification is
Final answer:
The second lens has a magnification of 6x. If the 5x lens is replaced by a 7x lens, the new total magnification would be 42x.
Explanation:
To find the magnification of the second lens, we need to know that the overall magnification of a system is the product of the individual magnifications of its elements. If the overall magnification is 30x and one lens magnifies 5x, the magnification of the other lens can be calculated by dividing 30x by 5x, giving us a magnification of 6x for the other lens.
If the 5x lens is replaced by a 7x lens, we can calculate the new overall magnification by multiplying the magnification of the two lenses together. So, 6x (from the other unchanged lens) multiplied by 7x gives us an overall magnification of 42x.
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Answers
Phase changes are not associated with a change in frequency,
wavelength, amplitude, color, volume, mass, national origin,
ethnicity, loudness, weight, opacity, or unit cost.
of the bicyclist for this trip
Answers
Answer:
500
Explanation: its 500 because you can also just search for it
B. The work done is equal to the area under the curve.
C. Work cannot be determined from this type of graph.
D. The work done is equal to length of the curve.
E. The work done is equal to the slope of the curve.
Answers
With a force/distance graph, the work is the area under the graph.
If the graph is curved, broken, or some other screwy shape that makes it difficult to
get the area in any simple way, then work is the integral of the function represented
by the graph.
Final answer:
The work done by a force over a given displacement, as represented in a force versus position graph, is equal to the area under the curve.
Explanation:
In a force versus position graph, the work done by the force over the given displacement is represented by the area under the curve. The work done is the integral of the force with respect to displacement which, in a graphical representation, translates to the area under the curve of the force versus position graph. For example, if the force is constant, the graph will be a rectangle, and the work done will be the product of force (height of the rectangle) and displacement (width of the rectangle). If the force is variable, the area under the curve might need to be calculated by dividing it into small sections and summing up their areas.
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Answers
The sentence can be completed as follows:
"Electricity is the movement of charges from one atom to another along a conductor."
The movement of the the charges is due to the presence of a potential difference across the conductor, which pushes the charges. More specifically, in normal conductors, the carriers of electricity are the electrons. Therefore we can rewrite the sentence as
"Electricity is the movement of electrons from one atom to another along a conductor."
Final answer:
Electricity is the flow of electrons from one atom to another along a conductor such as a metal wire. This motion is driven by a potential difference or voltage. While the overall speed of electron movement is slow, the propagation of the electrical effect (current) is near light speed.
Explanation:
Electricity is the movement ofelectrons from one atom to another along a conductor. These carriers of electric charge move due to potential difference, also known as voltage. For example, in a metal wire, free electrons move from the negative (low potential) end towards the positive (high potential) end of the wire, creating a flow of electricity.
An interesting detail is that while the electrons move quite slowly overall, the electric effect they produce, the electric current, propagates almost at the speed of light.
The conductor is a material that allows this movement of electrons to occur efficiently, metals like copper or silver are typical conductors.
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Answers
The vertical component of the force is 34.5 sin(45) = 24.4 newtons
Answer:
24.4
Explanation: