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A proton moving at a constant velocity of 10^6 m/s enters a region of uniform magnetic field perpendicular to its velocity. If the magnetic field is 5T, find the force on the proton. What will the force be if the proton's velocity makes a 45 degree angle with the field direction?
A man on a 50 m high cliff throws a rock vertically. The rock falls back down past theedge of the cliff and hits the ground 5 s after it was thrown. What was the velocity with which the rock was thrown
Betty Bodycheck (mB = 54.7 kg, vB = 22.0 km/h in the positive x-direction) and Sally Slasher (mS = 42.4 kg, vS = 28.0 km/h in the positive y-direction) are both racing to get to a hockey puck. Find both Betty's and Sally's Kinetic Energies
A polar bear starts at the North Pole. It travels 1.0 km south, then 1.0 km east, then 1.0 km north, What was the bear's average speed
a surface completely surrounds a 4.7 10-6 c charge. find the electric flux through this surface when the surface is a
q1. a student holding two weights close to his chest is sitting on a frictionless chair the student and chair are
a 8.0-g string 0.87 m long is under tension. the string produces a 900-hz tone when it vibrates in the third harmonic.
A girl rides the escalator that moves foward at a constant speed. As the girl raises, how do her gravitational energy and kinetic energy change.
Find out the maximum height reached by the rocket.
Drag racing combines the reflexes of the driver with a powerful engine to propel a specially designed car across a quarter mile as quickly as possible. What is the time for the car to go the quarter-mile
question the sun burns up 3.6 x 109 kg of matter each second. using the formula emc2 determine how much energy the sun
A small statue has a height of 3.5 cm and is placed in front of a concave mirror. The image of the statue is inverted, 1.5 cm tall, and located 12 cm away from the mirror. Find the focal length of the mirror.
A distant galaxy is moving away from the earth with a speed that results in each wavelength received on the earth being shifted so that wavelength = 1.75. Find the speed of the galaxy relative to the earth
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