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Suppose 1.0 mol of a monatomic ideal gas initially at 10 L and 307 K is heated at constant volume to 614 K, allowed to expand isothermally to its initial pressure, and finally compressed at constant pressure to its original volume, pressure, and temperature.
(a) What is the net energy entering the system (the gas) as heat during the cycle? J
(b) What is the net work done by the gas during the cycle? J
(c) What is the efficiency of the cycle? %
What diameter has the tip of the second hand with 100mil/hr tangential speed? What diameter has the tip of the minute hand with 100mil/hr tangential?
A red laser from the physics lab is marked as producing 632.8-nm light. When light from this laser falls on two closely spaced slits, What is the wavelength of light produced by the pointer
How far south of his starting point will he reach the opposite bank.
A magnesium surface has a work function of 3.68 eV. Calculate the maximum kinetic energy of the ejected electrons
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A car of mass 1.8 x10^3 kg is travelling east at a speed of 28m/s along a horizontal roadway. When its brakes are applied, the car stops in 5.8s. What is the average horizontal force exerted on the car even as it is braking.
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A heavy piece of hanging sculpture is suspended by a 90 cm-long, 5.0 g steel wire, What is the mass of the sculpture
A typical person radiates about 62 W of power at room temperature. Given this result, how long does it take for a person to radiate away the energy obtained by consuming a 230-calorie doughnut.
An ideal engine has an efficiency of 0.605 and uses gas from a hot reservoir at a temperature of 502 K. What is the temperature of the cold reservoir
An airplane must reach a speed of 172 mi/h to take off. If the runway is 470 m long, what is the minimum value of the acceleration that would allow the airplane to take off productively.
A converging lens of focal length 0.25 m forms a virtual image of an object, What is the distance between the object and the lens
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