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A solid uniform sphere and a uniform spherical shell, both having the same mass and radius, roll without slipping down a hill that rises at an angle ? above the horizontal. Both spheres start from rest at the same vertical height h. How fast is each sphere moving when it reaches the bottom of the hill?
v solid =
v hollow =
Find the drift velocity of conduction electrons in a gold wire of diameter 1.03 mm when a current of 0.221 A flows in it. The density of conduction electrons in gold is 5.90 X 10^28 m-3
You are to design a tungsten filament light bulb that has a power of 60W when it is connected to 120V at which condition its temperature is expected to be 1020C. Calculate the length of filament that you need
What is the average energy of the system after many measurements
In a head-on collision, a car stops in 0.3s from a speed of 30 m/s. What is the force applied to the driver by his seat belt during the collision
A bicycle is turned upsdie down and has one wheel spinning at 95.0 rpm. The wheel slows uniformly to a stop in 45.0 seconds. If the wheel were on the ground, what linear distance (in meters) would it travel
A 25-g string is streched with a tension of 43.0 N between two fixed points 12.0 m apart. What is the frequency of the second harmonic
A cue stick hits a cue ball with an average force of 23.8 N for a duration of 0.0246 s. how fast is it moving after being struck
Use the Bohr model to calculate the wavelength λ of the photon emitted when the electron in a hydrogen atom falls from the n = 5 level
A laboratory cyclotron is used to accelerate alpha particles (He+2) with a Kinetic Energy of 184 MeV. The cyclotron radius r for these particles is
Two hockey players strike a puck of mass 0.164 kg with their sticks simultaneously, exerting forces of 1.24 103 N, Find the instantaneous acceleration of the puck
A cart with mass 200gmoving on a frictionless linear air track at an initial speed of 1.1m/sundergoes an elastic collision with an initially stationary cart of unknown mass. What is the speed of the two-cart center of mass
A proton is suspended in a vacuum between two oppositely charged horizontal parallel plates. what is the charge of the larger sphere
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