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A proton moves at a speed of 1155 m/s in a direction perpendicular to amagnetic field with a magnitude of 0.74 T. What is the magnitude of the magnetic force on the proton?
You are standing on a sheet of ice that covers the football stadium parking lot in Buffalo; there is negligible friction between your feet and the ice. what is your speed after the collision
A sailor strikes the side of his ship just below the waterline. He hears the echo of the sound reflected from the ocean floor directly below 1.3 s later. How deep is the ocean at this point? Suppose the speed of sound in seawater is 1560 m/s and d..
A box of negligible mass rests at the left end of a 2.06-m, 26.5-kg plank (seefigure). The width of the box is w = 68.9 cm, and sand is to be distributed uniformly throughout it. The center of gravity of the nonuniformplank is x = 47.0 cmfrom the ..
A person can focus clearly only on objects between 37.5cmand 51.0cm from his eyes. Find the powers of the correcting contact lenses needed to correct his closeup vision and distant vision
Picture yourself in the castle of Helm's Deep from the Lord of the Rings. You are on top of the castle wall and are dropping rocks on assorted monsters that are 15.55 m below you. How long after you release the rock does this happen
Illustrate what is the minimum coefficient of friction between tires and road that will allow cars to negotiate the turn without sliding off the road?
An 8-g bullet is fired into a 170 g block that is initially at rest at the edge of a table of 1m height. The bullet remains in the block, and after the impact the block lands d = 2.10 m from the bottom of the table. Determine out the initial speed..
A gas is kept at constant pressure. If its temperature is changed from 15 to 145°C, by what factor does the volume change
A flywheel with a moment of inertia of .15 kgm2, is on a motor that puts out 2.4 Nm of torque. How many rotations will the wheel make by the time it reaches a speed of 1500 rpm
The power brick for the author's laptop computer has a power rating of 60 W. It uses a step-down transformer to convert the AC voltage from a wall socket (Vrms = 120 V) to a value near 12 V.
A 1600 kg car starts from rest at A, coasts 180m through a dip and comes to stop at B after coasting a distance d on level ground. If the rolling resistance is a constant force of 280N, conclude the distance d.
When Skylab reentered the Earth's atmosphere on July 11, 1979,it broke into a myraid of pieces. What was the kinetic energy of the film vault when it landed
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