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A certain automobile engine is performing work at the rate of29400 W (39 hp) by an efficiency of 22%. At what rate is heat being expelled by the engine?
a boat has a mass of 6800kg. its engines generate a drive force of 3750n due west while the wind exerts a force of 790n
question two insulating spheres have radii r1 and r2 masses m1 and m2 and uniformly distributed charges -q1 and q2.
A cylindrical piece of metal 8.50 cm tall with a radius of 1.95 cm has a specific gravity = 4.0, what is the mass of the cylinder in units of grams
A box of mass 52.0 kg is connected to a second box with a mass of 58.0 kg. Both are sitting on a horizontal surface, find the magnitude of the tension in the string between the two boxes
A 2.33 k? resistor is in series with a 1.80 ?F capacitor in an AC circuit. The rms voltages across the two are the same. What fraction of the source voltage are each of the rms voltages?
margaret walks to the store using the following path .500 miles west .200 miles north .300 miles east. what is her
When it rains, water vapor in the air condenses into liquid water, and energy is released. How much energy is released when 0.0429 m (1.69 inch) of rain falls over an area of 2.59×106 m2
When Brewster's angle of polarized light due to a reflection of light off of the surface of water makes a ray of light, how is the ray of light related to the ray of light that is refracted by the incoming beam into the water?
Show that the average force exerted. What is your displacement after running 2.5 {rm km} on Strawberry Fields, 1.4 {rm km} on Penny Lane, and 4.2 {rm km} on Abbey Road.
Two converging lenses, each of focal length 13.4 cm, are placed 62.8 cm apart, Where is the final image relative to the second lens formed
A swimmer bounces straight up from a diving board and falls feet first into a pool. She starts with a velocity of 3.00 m/s, What is her highest point above the board
A 20.0 kg box is dragged across a rough floor by a horizontalforce of 85.0N (i). Starting from rest, the force acts for3.00 s and the box is displaced 5.90 m in the +x direction. Determine the coefficient of friction between the box and the floor.
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