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10. The rate P at which a star radiates energy in the form of electromagnetic waves can be calculated using the equation: P = 4psR2T4 , where R is the radius of the star and T is the temperature of the star's surface.
Calculate a numerical value for the intensity of sunlight (in watts/meter 2) one AU away from the sun.
A large power plant converts 1000 kg of water to steam every second to run its generators. Compute the amount of heat required each second just to vaporize the water, assuming this is done at 100 C. What is the power input in megawatts for this pu..
What is the volume of the bubble when it reaches just below the surface of the lake, where temperature is 20°C.
In extremely cold weather conditions where the inside thermostat is set to 27 C and the outside temperature is -20 C, your 1200 square ft house might lose heat through the walls at a rate of 4000 W.
What is the peak current (in Amperes) in the filament of a 60W light bulb? Assume it is connected to a standard household A.C.
Two small spheres, each with mass m = 3.1 g and charge q, are suspended from a point by threads of length L = 0.23 m
A uniform cylindrical turntable of radius 1.80 m and mass 25.2 kg rotates counterclockwise in a horizontal plane with an initial angular speed of 4pi rad/s. Find the final angular speed of the clay and turntable
What is the magnitude of the force on the electron from the uranium ion?
A police siren has a frequency of 550 Hz as the police car approaches you and a frequency of 450 Hz after it has passed you and receding, What is the true frequency of the police siren
Explain by how much does the potential energy of a 23.0-kg child increase when the child climbs a normal staircase to the second floor?
What volume of space contains an energy equal. A car in stop-and-go traffic starts at rest, moves forward 12m in 8 seconds, then comes to rest again. The velocity-versus-time plot for this car is given.
Assume that the mud ends up uniformly distributed over a surface area of the valley measuring 0.3 km x 0.3 km, What is the mass of the mud sitting above a 4 m2 area of the valley floor
An aluminum rod is clamped one quarter of the way along its length and set into longitudinal vibration by a variable-frequency driving source. The lowest frequency that produces resonance is 4300 Hz. The speed of sound in an aluminum rod is 5100 m..
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