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An explosion breaks an object initially at rest into two pieces, one of which has 1.8 times the mass of the other. If 7300 Joule were released in the explosion, compute how much kinetic energy did the heavier piece get?
A 44-kg girl is bouncing on a trampoline. During a certain interval after leaving the surface of the trampoline, her kinetic energy decreases to 160 J from 420 J. How high does she rise during this interval? Neglect air resistance.
What are the rocket's horizontal range, greatest height, and total time of flight. The magnitude of the torque of this force on the door with respect to the hinge is most nearly .
q1. an electron with a speed of 3.28 times 108 cms in the positive direction of an x axis enters an electric field of
A wheel (radius=0.20m) is mounted on a frictionless , horizontalaxis.A light cord wrapped around the wheel supports a0.50kg object. What the moment of the wheel
A race car starts from rest on a circular track of radius 490 m. The car's speed increases at the constant rate of 0.740m/s2. find the speed of the race car
Two spherical objects with a mass of 5.26 kg each are placed at a distance of 3.95 m apart. How many electrons need to leave each object
A square, single-turn coil 0.25 m on aside is placed with its plane perpendicular to a constant magneticfield. An emf of 18 mV is induced inthe winding when the area of the coil decreases at a rate of0.08 m2/s.
A ball thrown with an initial velocity of 12 m/s at 30 degreesabove the horizantal from a rooftop 40 m high. Calculate: the maximum hight. the horizantal distance coverd when it is 40 m below the roof
Calculate the magnitude and direction of the transverse horizontal force acting on the train
A narrow tube open at one end has varibale length. When a vibrating tuning fork is held near one end, What is a possible frequency of the tuning fork
A 1300 car is approaching the hill shown in the figure at 13.0 when it suddenly runs out of gas. What is the car's speed after coasting down the other side
The four tires of an automobile are inflated to a gauge pressure of 2.10E+5 Pa. Each tire has an area of 0.0267 m2 in contact with the ground. Find out the weight of the automobile.
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