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In a head-on collision, a car stops in 0.15 second from a speed of 22 m/s. The driver has a mass of 68 kilogram, and is, fortunately, tightly strapped into his seat. Find what force is applied to the driver by his seat belt during that fraction of a second?
A small ball is set in horizontal motion by rolling it with a speed of 5.00 m/s across a room 10.0 m long, Select the reason why the motion is periodic
In a friction experiment, your wooden plank is horizontal. When a mass of 100 grams is hanging on the weight hanger of mass 50 grams, what is the coefficient of kinetic friction
An elevator can lift a 185 N aircraft a distance of 36 meters in 11 s. What is the power output of the elevator
A circular non-conducting ring is split into two semi-circles. The top half has a positive charge Q evenly distributed on it, and the bottom half has a negative charge (-Q), NOT evenly distributed. The charge on the bottom half is skewed to the left...
A 110 granite cube slides down a 45 degree frictionless ramp. At the bottom, just as it exits onto a horizontal table, it collides with a 235 steel cube at rest. How high above the table should the granite cube be released to give the steel cube a..
Electromagnetic waves areonly produced by accelerating charges, not by charges moving at aconstant speed without acceleration. What logical inconsistencywould be created if electromagnetic waves were produced by charges that move with zero accelerati..
A blacksmith cools a 1.30-kg chunk of iron, initially at a temperature of 650.0?C, by trickling 15.0?C water over it. How much water did the blacksmith trickle over the iron
A circular wire loop of radius 14.9 cm carries a current of 3.04 A. It is placed so that the normal to its plane makes an angle of 50.9° with a uniform magnetic field of magnitude 15.0 T. What is the magnitude of the torque acting on the loop?
An auto race is held on a circular track. A car completes onelap in a time of 21.5 seconds, with an average tangential speeed of38.1 m/s. What is the radius of the track
A solid cylinder of mass 10 kg is pivoted about a frictionless axis thought the center O. How many radians does the cylinder rotate through in the first 5.0 seconds, if it starts from rest
A 101 g ball is tied to a string. It is pulled to an angle of 5.20 degrees and released to swing as a pendulum. How long is the string
In Rutherford's famous scattering experiment, α particles (helium nuclei) were fired at 2.0 x 10^7 m/s over a large distance toward a gold nucleus with charge +79e. How close does the α particle get before turning around?
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