A spring stores 12 J when it is stretched by 16 cm. Calculate the spring constant.

The magnetic field inside a superconducting solenoid is 4.50 t. the solenoid has an inner diameter of 6.20 cm and a length of 26.0 cm. determine (a) the magnetic energy density in the field and (b) the energy stored in the magnetic field within the solenoid.

Acertain radio station broadcasts radio waves that have a wavelength of 298cm what is its broadcast frequency?

A10 kg box initially at rest is pulled 18 meters across a horizontal, frictionless surface by a 40 n force. what is the block’s final velocity over the 18 meters?