Answer:
Some of the kinetic energy from B has been transferred to A
Explanation:
In elastic collision, kinetic energy is conserved. Since A had 0 kinetic energy before the collision, while B has some kinetic energy. And kinetic energy is defined as
As the speed of B decreases post-collision, and its mass stays the same, kinetic energy of B must have been decreased as well.
A gains speed post collision, and so does its kinetic energy. So according to the law of energy conservation, some kinetic energy from B must have been transferred to A.
A.
Gases do not have a definite volume.
Explanation:
This observation suggests that the gases do not have a definite volume. Gases moves randomly and will expand to take up the shape of containers they are introduced into.
- The particles of a gas are very far apart.
- They are held together by very weak attractive forces
- Gases are random and they frequently collide with one another and the walls of the containers they are put into.
- They have no fixed volumes
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Answer:
a) heat flows from the warm plate to the cold one
Explanation:
Heat is an expression of energy, the bodies with more heat mean that they have more energy. In this way, they can share or pass this "excess" of energy to the cold body. Both plates are not in total contact but some part are close enough (they are touching) that the heat can pass from one to the other. Also the heat always need a media to travel, in this case, the air that surrounds the plates is also the media that the heat travels from the hot to the cold one.
The statement "<span>When an electron is added to a neutral atom of an element to form a negative ion, the resulting change in energy is referred to as the electron potential of that element." is false.
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