Apoint charge is located at (d, 0, 0) from the intersection of two grounded conducting planes with y = 0 and z = 0. if we consider the region z> () and x = 0, the leading order behavior of the potential for r > > d is proportional to, a. d2/r4 sin(o)cos(0) b. d/r2 c. d4/ro cos2(0) d. d2/r3 sin(o)cos(0)

Amoving electron has kinetic energy k1. after a net amount of work w has been done on it, the electron is moving one-quarter as fast in the opposite direction. (a) find w in terms of k1. (b) does your answer depend on the final direction of the electron's motion?

Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.6 m below the tank bottom which is a = 6.7 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute). report your answer in meters to two decimal places.

What is the efficiency of an engine that does 80 j of work and exhausts 320 j of heat while taking in 400 j of heat ? a. 10% b. 20% c. 80% d. 25%