Avery long wire carries a uniform linear charge density of 5 nc/m. what is the electric field strength 13 m from the center of the wire at a point on the wire's perpendicular bisector? (ε 0 = 8.85 × 10-12 c2/n · m2)

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)