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Radiation at temperature Ti fills a thermally insulated cavity of volume V. If the cavity expands isentropically to volume rV, how much work is done by the radiation , as a fraction of its initial energy? How much work would be done if the expansion were isothermal?
A charge of + 2.00nC is uniformly distributed on a ring of radius 10.0cm that lies in the x = 0 plane and is centered at the origin. Find the work required to move the point charge to the origin.
The coefficient of friction between a certain brass block and a large revolving turntable is μ = 0.24. What is the period of rotation of the turntable
A boulder has a volume of 1 m3 and a mass of 5000 kg. what will be the effective mass of the boulder
A He-Ne laser produces light of wavelength 633 nm with intensity 1.09 103 W/m2, over a beam of cross-sectional area 1.04 mm2. How many photons per second are emitted by the laser
A particularly beautiful note reaching your ear from a rare Stradivarius violin has a wavelength of 39.1 cm. The room is slightly warm, so the speed of sound is 344 m/s. Part A If the string's linear density is 0.560g/m and the tension is 160N , how ..
Two block of mass M = 30 kg and m = 10 kg slide without friction down the sides of a hemispherical bowl. They each start simultaneously from rest at the lip of the bowl, a height h = 6.0 m above the bottom of the bowl.
q1. a 40 cm diameter vertical cylinder is sealed at the top by a frictionless 22 kg piston. the piston is 79 cm above
The work function for platinum is 6.35 eV. Convert the value of the work function from electron volts to joules. Find the cutoff frequency for platinum.
The wind exerts a force of 325N north on a sailboat, while the water exerts a force of 425 N west on the sailboat. Find out the magnitude and direction of the net force on sailboat.
A projectile of mass 2.06 kg approaches a stationary target body at 7.70 m/s. What is the speed of the target body
A light bulb is wired in series with a 131-? resistor, and they are connected across a 120-V source. What are the two possible resistances of the light bulb
A 15 kg lawn mower is pushed with a constant force of 30.0 N at an angle of 37.0 degrees. What is the acceleration of the lawn mower
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