T1 lines: operate over existing telephone lines to carry voice, data, and video. have up to twenty-four 64-kbps channels. operate over coaxial lines to deliver internet access. are high-speed, leased data lines providing guaranteed service levels. do not provide guaranteed service levels, but simply "best effort."

1400 kg car has a speed of 27 m/s. if it takes 7 s to stop the car, what is the impulse and the average force acting on the car?

This is the number of complete movements of a wave per second.

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)