The electromagnetic waves with the shortest wavelengths and the highest frequencies are called:
a. ultrasonic waves.
c. x-rays.
b. microwaves.
d. gamma rays.

Arod of some material 0.20 m long elongates 0.20 mm on heating from 21 to 120°c. determine the value of the linear coefficient of thermal expansion [in (degrees c)^-1] for this material.

What is the temperature in degrees celsius of a substance with a tempature of 49k

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.