The pressure in the atmosphere decreases exponentially with height ly). in this problem, we will investigate the dependence of pressure on depth in the ocean a) use the hydrostatic relation to derive an expression for pressure as a function of depth in the ocean. assume the density of sea water is a constant equal to 1000 kg -3 b) calculate the depth in the ocean where the pressure is double that at the surface (ie the depth at which the water column above contributes roughly 1 atmosphere of pressure).

How much work would a child do while puling a 12-kg wagon a distance of 3m with a 22 n force directed 30 degrees with respect to the horizontal? (a) 82j (b) 52j (c) 109j (d) 95j

Assume that two of the electrons at the negative terminal have attached themselves to a nearby neutral atom. there is now a negative ion with a charge -2e at this terminal. what are the electric potential and electric potential energy of the negative ion relative to the electron? the electric potential and the electric potential energy are both twice as much. the electric potential is twice as much and the electric potential energy is the same. the electric potential is the same and the electric potential energy is twice as much. the electric potential and the electric potential energy are both the same. the electric potential is the same and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron. the electric potential is twice as much and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron.

The diagram shows a wave. the quantity shown is the amplitude. this quantity is directly proportional to which of these other quantities? a) energy b) frequency c) period d) wavelength