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Compute the temperature at which a tungsten filament that has an emissivity of 0.35 and a surface area of 3.0 10-5 m2 will radiate energy at the rate of 15 W in a room where the temperature is 13°C.
A nozzle of inner radius 1.05 mm is connected to a hose of inner radius 7.96 mm. The nozzle shoots out water moving at 25.5 m/s. What is the volume flow rate
a turntable platter spinning at 78 revmin comes to a complete stop in 29 s. assuming constant acceleration through what
An electrical cable consists of 184 strands of fine wire, each having 3.47 µ? resistance. What is the resistance of the cable
A 1.00 liter bubble of air at the bottom of the Marianas Trench has an inital temperature of about 0C. what is the volume of the bubble as it breaks the surface
using your knowledge of statics discuss briefly why the magnitude and direction of the knee reaction force varies with
In designing rotating space stations to provide for artificial-gravity environments, one of the constraints that must be considered is motion sickness. Studies have shown that the negative effects of motion sickness begin to appear when the rotati..
A spring scale is fastened to the ceiling of a railway car. When a 1.0-kg block is hung from the scale, it reads 12 N and is oriented as shown in the figure. What is the approximate acceleration of the car as measured by an observer at rest on the gr..
A cylinderical wooden log rolls (without slipping) down a small ramp. The log has a radius of 15 cm, a length of 2.0 m, and a mass of 78 kg. What is the log's total kinetic energy at the bottom of the ramp
question how fast can you set the earth moving? in particular when you jump straight up as high as you can what is the
A billiard ball moving at 6.00 m/s strikes a stationary ball of the same mass. find the struck ball's velocity after the collision
You've always wondered about the acceleration of the elevators in the 101 story high Empire State Building. What is the magnitude of the acceleration as the elevator starts upward
Two bugs are buzzing with the same frequency of 186Hz. One of the bugs is flying away from a stationary observer at 9.0m/s, What is the beat frequency that the observer hears
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