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A rocket of mass 3.95 ×105 kilogram is in flight near earth's surface. Its thrust is directed at an angle of 65.7 degree above the horizontal and has a magnitude of 7.76 × 106 Newton. Determine the
(a) magnitude and
(b) direction of the rockets acceleration. Give the direction as an angle above the horizontal.
A uniform 110 g rod with length 70 cm rotates in a horizontal plane about a fixed, vertical, frictionless pin through its center. Find the angular speed of the system at the instant the beads reach the ends of the rod
Iron atoms have been detected in the sun's atmosphere, some with many of their electrons stripped away. What is the net electric charge (in coulombs) of an iron atom
Calculate the maximum torque that can be applied to the pedals of a bicycle by a rider with a body mass of 74.0 kg, if the pedalarm is 20.0 cm long.
A falling stone takes 0.28 s to travel past a window 2.2 m tall. From what height above the top of the window did stone fall.
A student who weighs 500 N climbed the stairs from the firstfloor to the third floor, 15 m above, in 20 sec.
Three point charges of 2.0 ? C, 4.0 ? C, and 6.0 ? C form an equilateral triangle with each side 2.9cm Find the electric potential energy of this distribution
A person driving her car at 53.0 km/h approaches an intersection while the traffic light turns yellow. She knows that the yellow light lasts only 2s before turning to red.
Near the surface of the Earth, a car is traveling at 15 m/s on a horizontal road. The brakes are applied and the car skids to a stop in 4.0 s. discover the coefficient of kinetic friction among the tires and the road.
a block with a firecracker inside slides along frictionless ice with a speed of 12 ms. the firecracker explodes the
question1a spark plug in a car has electrodes unconnected by a gap of 0.023 in. to make a spark and ignite the air-fuel
A spring is attached to an overhead beam. If you put a mass of 170 gram on it and it proceeds to stretch a distance of 7 centimeter, Calculate the magnitude of the downward acceleration
While painting the top of an antenna 206 m in height, a worker accidentally lets a 1.30-L water bottle fall from his lunchbox. The bottle lands in some bushes at ground level and does not break. If a quantity of heat equal to the magnitude of the cha..
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