a beam of green light which has a wavelength of 5.51e-7 in air, travels through an unknown material which has an index of refraction of 1.42

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.

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

Suppose you increase your walking speed from 7 m/s to 13 m/s in a period of 2 s. what is your acceleration?