3. An iron cube (p = 7860 kg/m?) having sides of 1 cm is submerged in open fresh water (p = 1000
kg/m?) with its top surface at a depth of 2.5 m. Considering that its top surface is held horizontal
with respect to the water surface, determine the difference in pressure between the top and
bottom surfaces of the cube?

While standing outdoors one evening, you are exposed to the following four types of electromagnetic radiation: yellow light from a sodium street lamp, radio waves from an am radio station, radio waves from an fm radio station, and microwaves from an antenna of a communications system. rank these type of waves in terms of increasing photon energy.

Find the mass by adding the numbers from the three sliders

What ia the energy of an object because of its potential and kinetic energies