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You are testing a new amusement park roller coaster with an empty car with mass 123 kg. One part of the track is a vertical loop with radius 11.1 m. At the bottom of the loop (point A) the car has speed 27.1 m/s, and at the top of the loop (point B) it has speed 7.6 m/s. As the car rolls from point A to point B, how much work is done by the friction?
A ball rolls horizontally with a speed of 8.1m/s off the edge of a tall platform.If the ball lands 6.1m from the point on the ground directly below the edge of the platform
An ancient manuscript reveals that a owner of a vineyard in Rome held 2 selions of plowed land plus a livestock area of 20 perches by 5 perches
A cube of ice is taken from the freezer at -8.4 and placed in a 104 aluminium calorimeter filled with 322 of water at room temperature of 20. The final situation is observed to be all water at 17.
A Ball Rolling Uphill. A bowling ball rolls without slipping up a ramp that slopes upward at an angle beta (B) to the horizontal. Treat the ball as a uniform, solid sphere, ignore the finger holes.
Find out the rate of the wheel's rotation in revolutions per minute that will produce this effect.
The electric field points radially outward at all points within the sphere (and outside too, for that matter). What is the strength of the electric field at a distance r from the center, inside sphere.
When a car makes a sharp left turn, what causes the passenger to move toward the right side of the car? inertia, centripetal force, centrifugal force, or centripetal acceleration ?
Find the angle with respect to the ground
A student yells across a street at a concrete wall. The student hears an echo 0.500 seconds later. If the speed of sound in air is 343 m/s, what is distance from the student to the wall only.
A man pushes on a piano with mass 180 {rm kg} so that it slides at constant velocity down a ramp that is inclined at 20.0^circ above horizontal floor. Overlook any friction acting on the piano.
A plane flies from base camp to Lake A, 300 km away in the direction 36.9° south of east. After dropping off supplies it flies to Lake B, which is 260km at 30.0° west of north from Lake A. find out the distance and direction from Lake B to the bas..
An object, at the top of a very tall building, is released from rest and falls freely due to gravity. Neglect air resistance and calculate the distance covered by the object between times t1 = 5.57 s and t2 = 7.59 s after it is released.
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