A 120-V AC circuit has a 20.0-Ω resistor connected in series to a capacitor for which the capacitive reactance is XC = 45.0 Ω . 1. What is the phase constant?
2. What is the average rate at which energy is dissipated in the circuit?
3. If the resistance in the circuit is 25.0 Ω, what would the capacitive reactance have to be in order for the power factor to be 0.37?

1) what is the power in horsepower of a 100 watt light bulb? what is the power in kilowatts of a 200 horsepower engine? 2) if a cars engine is providing 3000 n of force to keep the car moving at 5 m/s, what is the engine’s effective power? 3) how many gallons of water will be pumped from a well 30 feet deep by a 1/2 hp engine in 1 minute? (1 gallon weighs 8.34 pounds)

Acamcorder has a power rating of 20 watts. if the output voltage from its battery is 9 volts, what current does it use?

Suppose astronomers built a 140-meter telescope. how much greater would its light-collecting area be than that of the 10-meter keck telescope? express your answer using two sign