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A roller coaster is traveling along a vertical circular loop (as shown in the following figure). The mass of the coaster is 500 kg. The radius of the loop is 10 m. At the lowest point (Position 1), the speed of the coaster is 25 m/s. When it reaches the highest point (Position 2), its speed reduces to 10 m/s. How much work is done by the frictional force from Position 1 to Position 2?
a 20 kg mass sits on an inclined plane with friction making an angle of 50 degrees with respect to the horizontal. calculate the frictional force required to keep the mass from sliding down the incline
If it started falling from an upright position, what was the initial angular acceleration of the structure? suppose that the bottom did not slide across the floor and that it did not fall out of plane; that is, during the fall, the structure remained..
Monochromatic light with wavelength 580nm passes through a single slit 2.40 um wide and 1.70m from a screen.
A 3.00kg stone is tied to a thin, light wire wrapped around the outer edge of the uniform 8.00kg cylindrical pulley, Find the angular acceleration of the pulley
A 38.00 kg girl is bouncing on a trampoline. All throughout a certain interval after she leaves the surface of trampoline, her kinetic energy decreases to 185J from 425J. How high does she rise all through this interval? Avoid air resistance.
A loudspeaker in a parked car is producing sound whose frequency is 20680 Hz, what is the minimum speed of the moving car
A bullet with a mass of 4.25g , traveling horizontally with a speed of 434m/s , is fired into a wooden block with mass of 0.786kg, What is the decrease in kinetic energy of the bullet
Consider a car driving at constant velocity. The force of friction acting on the car in Newtons is, Find the magnitude of f when v = 50 miles/h
Explain how would the results have differed in this experiment if the pulley and of the track was lower that the other end of the track?
In a vacuum, two particles have charges of q1 and q2, where q1 = +3.66 ?C. They are separated by a distance of 0.213 m,
A container of volume 23 cm3 is initially filled with air. The container is after that evacuated at 0oC to a pressure of 30 mPa. How many molecules are in the container after evacuation if we suppose that air is an ideal gas.
Determine the maximum percent uncertainty it will produce in this experiment if we did not align the apparatus to minimize its effects
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