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Compressed air can be pumped underground into huge caverns as a form of energy storage. The volume of a cavern is 7.40 105 m3, and the pressure of the air in it is 6.00 106 Pa. Assume that air is a diatomic ideal gas whose internal energy U is given by U = 5/2 nRT. If one home uses 14.0 kW · h of energy per day, how many homes could this internal energy serve for one day?
A 1.5 kg mass attached it spring with a force constant of 20.0 N/m oscillates in horizontal, frictionless track. At t=0, Determine the total energy of the oscillating system
A uniform beam of negligible weight is supported by a cable. The beam is pivoted at the bottom and a 2000-N object hangs from its top. Find the magnitude of the tension T in the cable.
A coil of wire has a resistance of 38.0 ? at 25° C and 43.7 ? at 60° C. What is the temperature coefficient of resistivity
A 14.1-g bullet is accelerated from rest to a speed of 793 m/s in a rifle barrel of length 66.9 cm. (a) Find the kinetic energy of the bullet as it bullet as it leaves the barrel.
The Rydberg constant is 1.096776 x 10^7 m^-1, What is the wavelength of the first Balmer line (j=2, k=3) for helium (z=2)
An R = 67.8 ? resistor is connected to a C = 47.8 ?F capacitor and to a ?VRMS = 117 V, and f = 112 Hz voltage source. Calculate the power factor when the capacitor is replaced with an L = 0.335 H inductor
A soccer ball is kicked at 30 degrees to the horizontal at a speed of 24m/s. How far will it go over a level ground
An electron entered a parallel-plate capacitor with the speed 5x10^5 m/s horizontally. What is the distance traveled by the electron along its initial direction between the capacitor plates
A curve in a road forms part of a horizontal circle. As a car goes around it at constant speed 14.0 m/s, What is the total horizontal force on the driver
When you weigh yourself on good old terra firma (solid ground), your weight is 144 lb . In an elevator your apparent weight is 124 lb.What is the magnitude of the elevator's acceleration? What is the direction of the elevators acceleration?
A light ray is incident from air onto the surface of a very quiet lake. what is the index of refraction of the water
A Light-weight potter's wheel, having a moment of inertia of 24 kg*m^2, is spinning freely at 40.0 rpm. what is the mass of the clay
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