Which of the following statements are true of thermal energy and kinetic energy?
2 answers:
Answer:
A) All molecules or atoms in motion have kinetic energy
B) Each molecules or atom in motion have kinetic energy
C) Each molecule or atom in motion have thermal energy
D) All molecules or atoms in motion have thermal energy
Explanation:
As we know that kinetic energy is given as
now we know that if all molecules are in motion then due to their motion the energy stored in it is given as kinetic energy
now we also know that thermal energy is the sum of kinetic energy of all atoms or molecules so it is given as
= thermal energy
so correct statements are
A) All molecules or atoms in motion have kinetic energy
B) Each molecules or atom in motion have kinetic energy
C) Each molecule or atom in motion have thermal energy
D) All molecules or atoms in motion have thermal energy
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Answer:
Equal to change in momentum of larger mass.
Explanation:
We are given that
Two difference masses .
Force act on both masses for the same length of time.
We have to find the change in momentum of the smaller mass.
Let M and m are two masses
M>m
We know that
Change in momentum for large mass=
Change in momentum for small mass=
Because Force and length of time are same for both masses .
Hence, the change in momentum of smaller mass is equal to change in momentum of larger mass.