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What work must a diesel engine in an 18.000kg truck do to increase its speedfrom 30. m/s to 40. m/s in 5.0 seconds? What average force did the engine exert? What power was needed ( in horsepower)
Two astronauts floating at rest with respect to their ship in space decide to play catch with a3-kg asteroid. What is Joe's speed right after his first catch
A tennis ball of mass 5.61 10-2 kg, initially moving at a speed of 31.5 m/s, hits a wall and rebounds with a speed of 18.0 m/s. find the increase in the internal energy of the ball
A sports car crosses the bottom of a valley with a radius of curvature equal to 95m. At what speed was the car traveling
at the top of a 100m cliff a backpack is dropped. one second later an archer fires an arrow straight down that hits the backpack just as it reaches the ground, How long does it take for the backpack to reach the ground
A metal object has a net charge of 1.761 x 10-12 C. How many excess or missing electrons does it have
A teenager pushes tangentially on a small hand-driven merry-go-round and is able to accelerate it from rest to a frequency of 13.1 rpm in 10.7 s. what force is required at the edge
A roller-coaster vehicle has a mass of 506 kg when fully loaded with passengers, If the vehicle has a speed of 19.0 m/s at point A, what is the force of the track on the vehicle at this point
An airplane flies between two points on the ground that are 500 km apart. The destination is directly north of the origination of the flight. The plane flies with an air speed of 120 m/s.
Two waves with identical frequency but different amplitudes A1 = 6.0 cm and A2 = 3.0 cm, What is its amplitude if they interfere destructively
A flight attendant pulls her 70 N flight bag a distance of 247 m along a level airport floor at a constant speed. The force she exerts is 33.00 N at an angle of 52° above the horizontal.
An antifreeze solution is made by mixing ethylene glycol (? = 1130 kg/m3) with water. determine the volume percentage of ethylene glycol in the solution
A fuel pump sends gasoline from a car's fuel tank to the engine at a rate of 4.80x10-2 kg/s. The density of the gasoline is 737 kg/m3, and the radius of the fuel line is 2.18x10-3 m. What is the speed at which gasoline moves through the fuel line?
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