Which describes the rotational motion of a planet?

a.
the motion of the planet as it completes one orbit around the sun.

b.
the motion of the planet as it spins on its axis

c.
the up and down and back and forth motion of the atoms that make up the planet

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.

A2.0 μf capacitor and a 4.0 μf capacitor are connected in series across a 0.827-kv potential. the charged capacitors are then disconnected from the source and connected to each other with terminals of like sign together. find the voltage across each capacitor.

Give an example in which the electrical energy changes to light energy