Question

a metal ball bearing of specific heat c moving with speed v is brought to rest. All its kinetic energy is converted into thermal energy which is absorbs causing a temperature rise T what was the value of v

Answer 1

Answer:

v= $\sqrt[]{2cT}$

Explanation:

the kinectic energy of a metal of mass m and velocity is v is given by

K= $= \frac{1}{2} mv^{2}$

heat capacity of Q of the metal ball with specific heat c and mass m and temperature change T

Q= mcT

according to the question All kinetic energy is converted into thermal energy

⇒K=Q

K$= \frac{1}{2} mv^{2}$= mcT

v= $\sqrt[]{2cT}$

Answer 2

Explanation:

A metal ball-bearing of specific heat capacity c moving with speed v is brought to rest. All its kinetic energy is converted into thermal energy which it absorbs causing a temperature rise . The value of v is