Abarge is 15.0 m wide and 75.0 m long and has vertical sides. the bottom of the hull is 1.20 m below the water surface. what is the weight of the barge and its cargo, if it is floating in fresh water of density 1000 kg/m3?

Why does lightning travel from clouds to the ground?

Aball is thrown horizontally from a cliff at 8m/s .in what direction is the ball moving 2s later?

The nuclear potential that binds protons and neutrons in the nucleus of an atom is often approximated by a square well. imagine a proton conned in an innite square well of length 105 nm, a typical nuclear diameter. calculate the wavelength and energy associated with the photon that is emitted when the proton undergoes a transition from the rst excited state (n 2) to the ground state (n 1). in what region of the electromagnetic spectrum does this wavelength belong?