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physics
11. You did 150. J of work lifting a 120.N backpack. a. How high did you lift the backpack? b. How much did the backpack weigh in pounds? (Hint: There are 4.448 N in one pound.)
asked by lion on February 12, 2012 
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a crane does 62,500. J of work lifting a 120.N backpack? a. How high did you lift the backpack? b. How much did the backpack weigh in pounds? (Hint: There are 4.448 N in one pound.)
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If you perform 10 joules of work lifting a 10N box from the floor to a shelf how high is the shelf? a. 1 m b. 2 m c. 10 m d. 100 m
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Mason lifts a box off the ground and places it in a car that is 0.50 meters high. If he applies a force of 8.0 newtons to lift this suitcase, what is the work done? A. 0 joules B. 4.0 joules C. 4.0 × 101 joules D. 4.0 × 102
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What is the weight of a 4.82 kg backpack in Newton and the acceleration of the backpack if a net force of 10.0 N is applied in m/s2?
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Find the given percent of each number.Show your work. a.25% of 120 b.80% of 120 c.120% of 80 d.70% of 150 e.150% of 200 f.200% of 150
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a 500 Newton ballerina did 250 joules of work to lift herself upwars through the air. She landed a total of 2.5 meters to the left after completing her jump. How high did she jump?
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A backpack full of books weighing 43.0 N rests on a table in a physics laboratory classroom. A spring with a force constant of 150 N/m is attached to the backpack and pulled horizontally, as indicated in the figure. If the spring
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How much work is done in lifting a 300 Newton rock 10 meters from the ground?
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Yet another science question..
How much work is done when you push a 50kg refridgerator across the room for 3 meters? None, if you ignore friction. Work requires a force, gravity is upwards. In reality, work is done in pushing horizontally, but that is due to
asked by brandi on December 19, 2006