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A ball is launched straight up with a speed of 15.13 miles per hour. What is the maximum height reached in meters?
A 49.2-kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.637 and 0.439, respectively. What horizontal pushing force is required
what is the maximum weight of the crate that the system can support? What is the angle needed for equilibrium.
Derive the equation for the linear acceleration of a falling mass m suspended by a string from the rim of a uniform disk of mass M and radius R that is free to rotate without friction about its principal axis. 2. If the hanging mass is doubled, what ..
q1. in a head-on collision a car stops in 0.24 from a speed of 25. the driver has a mass of 74 and is fortunately
Another way of looking at the fact that all objects have wave-like properties is diffraction. At what speed should the student be moving in order to have signficant diffraction as she enters the door
Since the ends are open, the boundary conditions force the standing wave (representing the displacement of air molecules) that is produced in the bugle to have antinodes at the open ends of the bugle
A string of a violin is 32 cm long between fixed points with a fundamental frequency of 440 Hz and a mass per unit length of 7.2 x 10-4 kg/m. What are the wave speed and the tension in the string
A 0.55 kg- croquet ball is initially at rest on the grass. When the ball is struck by a mallet, the average force exerted on it is 200N. If the ball's speed after being struck is 3.5 m/s , how long was the mallet in contact with the ball?
Suppose that when a 12.0-V battery drives a current of 6.7 A through a resistive device, How much is the internal resistance (in ohms) of the 12.0-V battery
A small earthquake starts a lamppost vibrating back and forth. What is the time constant for the damping of the oscillation
A nozzle of inner radius 1.05 mm is connected to a hose of inner radius 8.03 mm. The nozzle shoots out water moving at 25.5 m/s. At what speed is the water in the hose moving
In a certain experiment, the pressure of a gas depends on the volume by P=alphaV^2 + betaV^2, where alpha = 3.5 Pa/m^9 and beta = 8.2 Pa/m^6. What is the work done on the gas
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