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A hoop is rolling without slipping along a horizontal surface with a speed of 4.50 m/s when it starts up a ramp that makes an angle of 25 degrees with the horizontal. What is the speed of the hoop after it has rolled 3.0 meters up the ramp.
To focus a camera on objects at different distances, the converging lens is moved toward or away from the film, Over what distance must the lens be movable
A body of mass 2.65 kg moves along the x-axis, and its motion is described by the equation x = 6 sin (13 t + 2), Find the resultant force on the body at t = 0.100 s
A standing wave in a pipe with both ends open has a frequency of 680 Hz. The next higher harmonic has a frequency of 1020 Hz, How long is the pipe
The water jet of a fountain is let out at a speed of 80 ft/s and an angle of 60 degrees. determine the radius of curvature of the jet at its highest point
A pipe that is closed on one end is 1.2 meters long. What are its fundamental frequency and its first two overtones? You punch out the closed end of the pipe. What are its new first and second harmonic frequencies?
Three uniform spheres are located at the corners of an equilateral triangle. Each side of the triangle has a length of 1.19 m. find the magnitude of the initial acceleration of the third sphere
The crankshaft in a race car goes from rest to 3540{\rm rpm} in 3.0{\rm s}. What is the crankshaft's angular acceleration
The focal length of the objective and eyepiece in a compound microscope are 0.8 cm and 2.5 cm, respectively. What is the total magnification
A birds travels at 1.4 m/s with a fish in its claws, at 15 degrees below the horizontal. If it drops the fish that takes 1.8 seconds to land on the ground
The sound level of a single vacuum cleaner is about 75dB and a television is about 55dB. What is the sound level number
The Earth is constantly being bombarded by cosmic rays, which consist mostly of protons. what is the total charge incident on the atmosphere
To avoid hitting a pedestrian, a car driver slams on her brakes and comes to a complete stop after skidding 16 m. find the speed of the car when the brakes were applied
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