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Estimate the radiation length of a substance if, after passing through a 2.5 mm thick plate, the electron energy has decreased by 15%. Consider losses mainly radiation.
A 201.9 kilogram satellite is in a circular orbit of 26,273 miles (42,300,000 meter) in radius. The force keeping the satellite in orbit is 46.3 Newton. Obtain what is the velocity of the satellite
A centrifuge in a medical laboratoryrotates at an angular speed of 3400rev/min. Find the constant angular acceleration of the centrifuge
An object consists of a ball of weight W glued to the end of a uniform bar also of weight W. if you release it from rest, with the bar horizontal.
The block moves .600m up along the plane with no friction while the force F with magnitude of 200.0 N is acting on it. What is the work done with the net force acting on the block? What is the work done on the block with the gravitational field?
an object is formed by attaching a uniform thin rod with a mass of mr 6.69 kg and length l 5.44 m to a uniform sphere
A ball (spherical shell of mass M and radius R) rolls without slipping up a ramp. If the ball's initial speed is v, how high up the ramp does the ball roll
a trailer truck enters a 2 percent uphill grade traveling at 72 kmh and reaches a speed of 108 kmh in 300 m. the cab
Eight books, each 4.3 cm thick with mass 1.7kg, lie flat on atable. How much work is required to stack them one on top of another
An automobile moves at constant speed down one hill and up another hill along a smoothly curved surface. What will the diagrams for the directions of the velocity and the acceleration of the automobile at the instant that it is at the lowest position..
In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.0315 s, find the vertical components of the launch velocity
You want to use a lens with a focal length of 37.0cm to produce a real image of an object, with the image twice as long as the object itself. Where should the object be placed
You are driving along a highway at 35.0 m/s when you hear the siren of a police car approaching you from behind, What is the speed of the police car
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