Abullet of mass 0.037 kg is fired horizontally with a speed of 77 m/s from a tall bridge. if the bullet is in the air for 2.1 s. how far from the base of the bridge does it land in m?

Which planet do you think would be easiest for humans to colonize some day?

Materials will have different energies associated with the electrons inside them. this is related to how strongly bound they are by their work function. if we sandwich a material with a very low energy between two materials with a high energy, we create a trap for an electron. if this trap is very narrow in one direction in comparison to the others, this is approximately a 1-dimensional box that confines the electron. what is the lowest energy of an electron in the box if the thinnest direction across the materials is 4.81 nm?

The power exerted by a muscle is the product of the force exerted and the velocity of contraction. the area of which of these shaded regions represents the power exerted while a weight is lifted at maximum speed?