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Body B is a slender bar bent into the shape of a quarter circle. the weight of B is 100N. find the tension in strings OA and OB instantaneously after the system is released from rest.
The sport of gymnastics requires both impressive physical strength and extensive training for balance. The iron cross is an exercise performed on two suspended rings, which the gymnast grips with his hands
Wave-Particle Duality: Light and Electrons
A roller coaster reaches the top of the steepest hill with a speed of 4.0 km/h. Estimate its speed when it reaches the bottom
A long string is moved up and down with simple harmonic motion with a frequency of 46 Hz. The string is 579 m long and has a total mass of 46.3 kg. Determine the velocity of the wave on the string
A car (m = 1510 kg) is parked on a road that rises 18° above the horizontal. find the static frictional force that the ground exerts on the tire
a laser beam passes through a converging lens with a focal length of 19 cm at what distance past the lens has the laser
A skateboarder shoots off a ramp with a velocity of 6.4 m/s, directed at an angle of 55° above horizontal.
0.023mol of a diatomic gas, with initial temperature 25?C, How much heat is added during this process
An open organ pipe has its fundamental frequency at 320 Hz. The first overtone of a closed organ pipe has the same frequency as the first overtone of the open pipe, How long (in meters) is the closed pipe
As we've seen, astronauts measure their mass by measuring the period of oscillation when sitting in a chair connected to a spring. What is the mass of an astronaut who oscillates with a period of 2.16 when sitting in the chair
The original Doppler effect expirament had a pair of sound sources- one on a moving train and one at rest on the train station platform. How fast was the train going
The sound level 25.0m from a loudspeaker is 69.0 dB. Calculate the rate at which soundenergy is produced by the loudspeaker, assuming it to be anisotropic source.
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