When the two balls hit each other what will happen if it’s perfectly inelastic collision

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

The radius of an atom is closest in size to a

Along wire carrying a 4.2 a current perpendicular to the xy-plane intersects the x-axis at x=−1.7cm. a second, parallel wire carrying a 3.0 a current intersects the x-axis at x=+1.7cm. part a at what point on the x-axis is the magnetic field zero if the two currents are in the same direction? express your answer to two significant figures and include the appropriate units.