What is the gain in GPE when a brick of 2.00 kg is lofted up by 11.5 m?

What do radio waves and microwaves have in common? both are at the side of the spectrum that has the shortest wavelengths. both are at the side of the spectrum that has the lowest radiant energy. both are at the side of the spectrum that has the lowest frequency. both are found next to visible light on the electromagnetic spectrum.

Eddy whose mass is 55kg climbs up the 1.50 meter high stairs in 2s.calculate eddy’s power rating

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?