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By what height must a long jumper raise his centre of mass when making a jump of 9m, if his horizontal velocity on take-off is 8ms-1?
An astronaut with a total mass of 68.5 kg lands on a distant planet. The astronaut weighs himself on the surface of the planet and finds that his weight is 425.0 N. What is the magnitude of the gravitational acceleration on this planet?
An emf is induced in a conducting loop of wire 1.46m long as its shape is changed from square to circular. Find the average magnitude of the induced emf
The unit of horsepower was defined by considering the power output of a typical horse. What power does this represent in hp
A car is stopped for a traffic signal. Find the magnitude of the linear impulse experienced by a 76 kilogram passenger in the car during the time the car accelerates
In April 2010, the worst oil spill until that time occurred when an explosion and fire on the Deepwater Horizon left 11 workers dead and began releasing oil into the Gulf of Mexico.
an air puck bounces back and forth between two parallel walls always traveling perpendicular to the walls. each time
Two point particles of charge Q1 = 46 µC and Q2 = 81 µC are found to have a potential energy of 43 J. What is the distance between the charges
A sample containing beryllium (atomic mass 9 u), aluminum (27 u), and an unknown element is placed in a mass spectrometer. What is the mass of the unknown element
A block of the same weight as the meter stick is suspended from the stick, as shown, at a distance x from the wall. What is the minimum value of x for that the stick will remain in equilibrium.
A wire of radius R carries a current with density: J =C(R-r). Find the total current carried by the wire
The reflecting surfaces of two intersecting flat mirrors are at the angle of 59. A light ray strikes the horizontal mirror, reflects off horizontal mirror, impinges on the raised mirror, reflects off the raised mirror and proceeds in the right-han..
what is the centripetal force acting on the Bob
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