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Consider a solid sphere of radius 24 cm, at a temperature of 43 degrees Celsius. Suppose the sphere is completely enclosed in vacuum by a vessel whose walls are kept at -33 degrees Celsius. What is the net flow rate of energy (in watts) from the sphere to the vessel? For simplicity, assume the sphere and the vessel are both ideal blackbody radiators, with emissivity e = 1.
A boxed 11.0 computer monitor is dragged by friction 7.50 up along the moving surface of a conveyor belt inclined at an angle of 36.8 above the horizontal. how much work is done on the monitor by friction
A model rocket with mass 1.62 kg starts from rest on the ground and accelerates upward with engine force 45.8 N. Find the work done by the rocket engine
A defibrillator consists of a 16.7-µF capacitor that is charged to 9.0 kV. how much charge passes through the body tissues
A horizontal string tied at both ends is vibrating in its fundamental mode. The traveling waves have speed v, frequency f, amplitude A, and wavelength l.
a closed frictionless piston-cylinder assembly contains 4 lbm of h20. beginning with an initial volume of 10 ft3 the
If you place an electric charge in an electric field it will feel a force due to the electric field, Describe the direction of the force
A Carnot heat engine has a thermal efficiency of 0.615, and the temperature of its hot reservoir is 775 K. If 2375 J of heat is rejected to the cold reservoir in one cycle, what is the work output of the engine during one cycle?
Two rooms in your house differ in temperature by 8.5?F. What's the temperature difference in kelvin
A 28.4kg beam is attached to a wall with a hinge and its far end is supported by a cable. what is the horizontal component of the force exerted by the hinge on the beam
four charges q=4nC form a square, 20 cm on a side. what is the potential of electric field at the center of the square
A string of length 2.6 m is fixedat both ends. When the string vibrates at a frequency of84.0 Hz, a standing wave with6 loops is formed. What is the wavelength of the waves that travel on the string
A stopped wire, 0.90 m long, resonates with a tone whose wavelength is 0.72 m. What is the frequency of this normal mode in SI units
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