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A physics student needs to loosen a large lock bolt The bolt takes 1500N-m to break free and loosen. The student has a mass of 48Kg, and she has a 0.5m breaker wrench and three sections of pipe which may be attached to the wrench. The sections extend the wrench by 1m, 2m and 3m respectively. Can she loosen the bolt?
If so, how. (Ignore the mass of the wrench and the pipes) A 1,730 KG car traveling at a rate of 166Kph is racing around a flat circular track, maintaining a perfectly circular 2 Km path What is the centripetal force acting on the car? What is the minimum coefficient of statistic friction between the tires and the track that will maintain this situation? If the tiles have a radius of 1.2m, what is the angular velocity of the tire? How many rotations do the tiles make on a single loop around the track?
A certain refrigerator is rated as being 31% as efficient as a Carnot refrigerator. how much work must the refrigerator motor do
A crate of mass 10.6 kg is pulled up a rough incline with an initial speed of 1.52 m/s. What is the change in kinetic energy of the crate
A hoop and a cylinder of the same mass and outer radius are rolled up an incline plane with the same speed. Which goes farther up the incline plane? Explain
A golf ball with mass 45.90 g and diameter 42.60 mm is struck such that it is moving with a speed of 51.93 m/s, What is the kinetic energy of the golf ball
If we model the drag force of the atmosphere as proportional to the square of the speed of a falling object, Fdrag = ?bv^2, What is the person's terminal velocity
A rock is tossed straight up by a velocity of 33.3 m/s. When it returns, it falls into a hole 22.5 m deep. What is the rock's velocity as it hits the bottom of the hole?
An unknown gas has a density of 1.584 kg/m3 at STP. (STP, for standard temperature and pressure, What is the gram molecular mass
Consider two masses (M=50 kg, m = 10 kg) connected by a string, Find the magnitude of frictional force acting on mass
A 0.39-kg cart and a 0.13-kg cart are held together with a compressed spring between them. How much elastic potential energy was stored in the spring before the release
A model rocket blasts off and moves upward with anacceleration of 12m/s^2 until it reaches a height of 27m, at whichpoint its engine shuts off and it continues it flight in freefall. what is the max height attained by the rocket?
A concave mirror (R=64.0cm) is used to project a transparent slide onto a wall. how far from the mirror should the wall be set
Rectangular Loop A rectangular loop (area = 0.15m2) turns in a uniform magnetic field, B =0.17 T. When the angle between the field and the normal to the plane of the loop is π/2 rad andincreasing at 0.70 rad/s, what emf is induced in the loop?
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