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ccccthe Zambesi river in Africa rushes over Victoria Falls at a rate of 25 x 10^6 gallons per minute. The falls are 108 m high, 1 gallon equals 3.785 x 10^-3 m^3 (or 0.1337 cubic foot), and the water has a density of 1.00 x 10^3 kg/m3 (each cubic foot weighs 62.4). Determine the power developed by the water in SI units.
A blacksmith cools a 1.30-kg chunk of iron, initially at a temperature of 650.0?C, by trickling 15.0?C water over it. How much water did the blacksmith trickle over the iron
use the inverse square law to display that in space shuttle territory, 200 kilometers above earth's surface, the force of gravity on a shuttle is about 94 percent of that at earth's surface.
Rocky's base metabolic rate is 100 W (when not exercising). He weighs 80 kg. This morning, he climbed stairs 25-cm high at the rate of 140 steps per minute for 30 minutes on a Stairmaster. How much energy did he burn (in J and in kWh)
A parallel plate capacitor has a charge of 2.66 X 10^-11 C after being charged by a 15.0 V battery. The plates are seperated by 2.00 mm of air
A small bulb is rated at 7.5 W when operated at 125 V. The tungsten filament has a temperature coefficient of resistivity a = 4.5 ? 10-3 / °C. What is the resistance of the filament (in ohms) at room temperature
An oscillating LC circuit has a current amplitude of 10.5 mA, a potential amplitude of 276 mV, and a capacitance of 240 nF. What are the maximum rate at which the inductor gains energy
Calculate the period of the square wave (in milliseconds) to which the function generator is to be set in order five 1/e-times of the RC circuit to be accommodated into one half of the square wave
What is atmospheric pressure on top of Mt. Everest on a day when water boils there at a temperature of 80.0°C
A floodlight with a mass of 20.0 kg is used to clarify the parking lot. The floodlight is supported at the end of a horizontal beam that is hinged to a vertical pole.
Two point charges Q1 = +4.55 nC and Q2 = ?1.65 nC are separated by 50.0 cm. (a) What is the electric potential at a point midway between the charges? (b) What is the potential energy of the pair of charges? What is the significance of the algebrai..
A 0.7 kW heater is designed to operate at 210 V. Assume that its resistance is constant. What is the power dissipated in this resistor if it operates at 120 V
The electric field between the plates of a parallel plate capacitor is horizontal, uniform, and has a magnitude of 3.5*10^4 N/C. What is the angle made by the thread with the vertical axis
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