In a region of space an electric field given by E=Ek and some unknown magnetic field exists. A particle of charge q is observed to move in the x direction at a constant velocity v = vi in this region. Which of the following is a possible value of the magnetic field? Assume that only electric and magnetic forces act on the particle. a) B = -(EX)j
b) B = +(E/v) j
c) B = -(E/V) i
d) B = -(E/V)k
e) None

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

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.

Which one of the following represents the reduced forms of the two major electron carriers? nadh and fadh2 nad+ and fadh2 nad+ and fad nadh and fad