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A baesball of mass 75gram is traveling 40m/s when it is caught. Incatching the ball a player moves his mit backward 25centimetres. What average force is exerted by the ball when it is caught.
A 5.7kg box is on a frictionless 44° slope and is connected via a massless string over a massless, find the tension in the string once the box begins to move
plane polarized light of intensity I0 is passed through two polarizers, the first one at 45 degrees to the original plane of polarization, what intensity is transmitted
A fire engine moving to the right at 40 m/s sound its horn (frequency = 500 Hz) at the two vehicles shown in the figure. The car is moving to the right at 30 m/s, while the van is at rest. (a) What frequency is heard by the passenger in the car?
A particle known as a pion lives for a short time before breaking apart into other particles. What is the lifetime according to a hypothetical person who is riding along with the pion
Two passenger trains A and B, each 240 mlong, pass a 40 m long railroad platform in Winnepeg. The trains are moving in opposite directions at equal speeds of 0.500cwith respect to the ground. Train A is traveling west and alltracks are perfectly stra..
A transformer has 390 turns in the primary coil and 230 in the secondary coil. What kind of transformer is this, By what factor does it change the current
A force of 725N accelerates a 325kg object, initially moving 7.50 m/s, What impulse was applied to the object
An ideal monatomic gas expands isothermally from 0.600 m3 to 1.25 m3 at a constant temperature of 600 K. If the initial pressure is 1.10 105 Pa. Find the work done on the gas
People who do chin-ups raise their chin just over a bar (the chinning bar), supporting themselves only by their arms. Find the force his arms must exert on him during the accelerating part of the chin-up
A hollow metal sphere has a potential of +360 V with respect toground (defined to be at V = 0) and has a charge of 5.9 x10-9 C. Find the electric potential at the center of the sphere.
A current of 7.87 A in a solenoid of length 12.0 cm creates a 0.357-T magnetic field at the center of the solenoid
An automobile of mass m = 1100 kg is being towed by a truck whose driver observes that the tension in the rope is T = 3700 N, What is the work done to overcome friction in the car
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