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You are trying to push a crate across the rough floor of a warehouse. Just before the crate begins to move, you have applied a force of 102 N. The shipping label on the crate says it is 61 kg. Calculate the coefficient of static friction between the crate and the floor. (Use g=9.8ms-2)
A mountain climber, in the process of crossing between two cliffs by a rope, pauses to rest. She weighs 576 N. As the drawing shows, she is closer to the left cliff than to the right cliff, with the result that the tensions in the left and right s..
A father (m = 70 kg) and son (m = 45 kg) are standing facing each other on a frozen pond. The son pushes on the father and finds himself moving backward at 3 m/s after they have separated. How fast will the father be moving.
A 400 gram model rocket is on a cart that is rolling to the right at a speed of 3.5 m/s. Find at what horizontal distance left of the loop should you launch
A plastic rod is rubbed against a wool shirt there by aquiring the charge of -0.80 mC. how many electrons are transfered from the wool shirt to the plastic rod.
The receiver for a dish antenna is located in front of the concave surface of the dish. If the radius of curvature of the dish is R, find how far in front of dish should receiver be located
A Geiger tube consists of two elements, a long metal cylindrical shell and a long straight metal wire running down its central axis. Model the tube as if both the wire and cylinder are infinitely long.
what is the maximum speed at which a 234-kg car can safely travel if the radius of the track is 80 m and the
Romeo takes a uniform 11 m ladder and leans it against the smooth wall of the Capulet residence. The ladder's mass is 25.0 kg, and the bottom rests on the ground 2.8 m from the wall. When Romeo, whose mass is 73 kg, gets 90% of the way to the top, th..
A 1060-kg van, stopped at a traffic light, is hit directly in the rear by a 794-kg car traveling with a velocity of +3.90 m/s. determine the final velocity of the car and the van
A pair of flat mirrors meet to form a right angle. A beam of light is incident on one of them at a point 11.5 cm from their point of intersection, what is the angle of incidence at the first mirror
Romeo (75.0 kg) entertains Juliet (52.0 kg) by playing his guitar from the rear of their boat at rest in still water, 2.80 m away from Juliet who is in the front of the boat.
A 1000-kg sports car (including the driver) crosses the rounded top of a hill (radius = 90.0m ) at 22.0m/s. Determine the normal force exerted by the road on the car
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