An electron has a velocity of 6×106 m/s in the positive x direction at a point where the magnetic field has the components Bx = 3 T, By = 1.5 T. What is the magnitude of the acceleration of the electron at this point? 2.1 × 1018 m/s2

2.6 × 1018 m/s2

3.7 × 1018 m/s2

3.2 × 1018 m/s2

1.58 × 1018 m/s2

Arefrigerator uses r-134a as the working fluid and operates on the ideal vapor-compression refrigeration cycle except for the compression process. the refrigerant enters the evaporator at 120 kpa with a quality of 34 percent and leaves the compressor at 70°c. if the compressor consumes 450 w of power, determine (a) the mass flow rate of the refrigerant, (b) the condenser pressure, and (c) the cop of the refrigerator. (0.00644 kg/s, 800 kpa, 2.03)