For the great depths that may be encountered in the ocean the compressibility of seawater may become an important consideration. (a) assume that the bulk modulus for seawater is constant and derive a relationship between pressure and depth which takes into account the change in fluid density with depth. (b) make use of part (a) to determine the pressure at a depth of 6 km assuming seawater has a bulk modulus of 2.3 x 10^9 pa and a density of 1030 kg/m^3 at the surface. compare this result with that obtained by assuming a constant density of 1030 kg/m^3.

a charge 3q is at the origin, and a charge −2q is on the positive x axis at x=a. part a where on the x-axis would you place a third charge so it would experience no net electric force? enter an expression for the exact answer, which will involve a square-root sign. (do not enter an approximate decimal answer.)

the answer is false. this is because for ice to melt, it requires latent heat of melting. latent heat means heat energy required to change phase without any increase in temperatures. therefore, the ice will take energy from the environment to melt hence atmospheric temperatures will reduce.