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The Rumford Engineering company, a supplier of yours, has just announced that it is offering a new product line for closed electronic cabinet cooling.
It is a small refrigeration unit driven by a 0.250 hp electric motor that removes 500. W of heat from the cabinet. What is the coefficient of performance of this unit?
A truck is traveling at a speed of 29.4 m/s along a level road. Obtain the shortest distance in which the truck can come to a halt
Two point charges of 4µC and -4µC are separated by 10 cm. Determine the electric field midway between them
The maximum speed of the photoelectrons from a photoelectric experiment with a silver surface (work function: 4.73 eV) is found to be 3.00× 106 m/s
How far east of his starting point will he reach the opposite bank? What is the magnitude of his velocity relative to the earth.
A block of mass=0.750kg is fastened to an unstrained horizontal spring whose spring constant is k=65.0N/m. The block is given a displacment of 0.220m and then released from the rest.
With a wooden ruler you measure the length of a rectangular piece of sheet metal to be 12 mm. What is the ratio of the rectangle's width to its length
A bullet with a mas of 10 g and an initial velocity of 800m/s penetrates 5 cm into a fixed block of wood before stopping. The average force on the buller by the wood is? A block of mass 4.25 kg hanging from a light string is struck by a projectile of..
A vertical electric field of magnitude 2.25 x 104 N/C exists above the Earth's surface on a day, Determine the electric flux through the bottom of the car
A child is twirling a 0.012 kg ball on a string in a horizontal circle whose radius is .100 meters. The ball travels once around the circle in .500 seconds.
A projectile is fired at an upward angle of 45 degrees from the top of a 265 m cliff with a speed of 350 m/s. Illustrate what will be it's speed when it strikes the ground below?
a resonant circuit in a radio receiver is tuned to a certain station when the inductor has a value of .250 h and the
A potential difference V is applied to a wire ofcross-section area of 1 unit, length 1 unit, and conductivityσ. You want to change the applied potential differenceand draw out the wire so the power dissipated is increased bya factor of 30 and the ..
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