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A 240-N sphere 0.20 m in radius rolls without slipping 6.0 m down a ramp that is inclined at 31° with the horizontal. What is the angular speed of the sphere at the bottom of the slope if it starts from rest?
Visible light passes through a diffraction grating that has 900 slits per centimeter, and the interference pattern is observed on a screen that is 2.56 m from the grating. In the first-order spectrum, maxima for two different wavelengths are separ..
q1. the density of gold is 1.93times104 rmkgmrm3. 203 rm g of gold is shaped into a cube. what is the length of each
After completing the experiment with the single slit, you wish to determine the width of the slit. Recall that the wavelength of the laser light is 632.8 nm. If the distance from the central spot to the first minimum in intensity is 4.0 cm and the..
a. calculte the potential difference between the conductors if they are sperated by a distance of 2m (use x=0 as the v=0 reference point.) b. how much energy is gained by a 20uc charge
The magnetic field in a radio wave traveling through air has amplitude 2.5 10-11 T and frequency 2.9 MHz. Find the amplitude and frequency of the electric field
Light of wavelength 470 nm in air enters a fishbowl filled with water, then exits by the crown-glass wall of the container. Find the wavelengths of the light (a) in the water and (b) in the glass.
A coin rests on the bottom of a beaker filled with an unknown liquid. A ray of light from the coin travels to the surface of the liquid and is refracted as it enters into the air. How fast is the light traveling in the liquid
The angular speed of a propeller on a boat increases with constant acceleration from 12 rad/s to25 rad/s in 2.4 sec. Find through what angle did the propeller turn during this time
A stunt car driver negotiates the frictionless track shown in such a way that the car is barely on the track at the top of the loop. The radius of the track is 9.9 m and the mass of the car is 1800 kg. Find the force of the car on the track when the ..
a conducting sphere of radius 20.0 cm carries an excess charge of 15.0 oc and no other charges are present. k 14??0
Ships A and B leave port together. For the next two hours, ship A travels at 40.0mph in a direction 20.0 ?west of north while the ship B travels 45.0, What is the speed of ship A as seen by ship B
An extreme skier, starting from rest, coasts down a mountain slope that makes an angle of 25o with the horizontal. Find how fast is she going just before she lands
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