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A rock is projected from the edge of the top of a building with an initial velocity of 17.6 m/s at an angle of 31 degrees above the horizontal. The rock strikes the ground a horizontal distance of 93 m from the base of the building. The acceleration of gravity is 9.8 m/s2 . Assume: The ground is level and that the side of the building is vertical. Neglect air friction. What is the horizontal component of the rock’s velocity when it strikes the ground?
A 0.540-kg object attached to a spring with a force constant of 8.00 N/m vibrates in simple harmonic motion with an amplitude of 11.2 cm. Calculate the maximum value of its speed
A 5.0-kg crate is being pulled along a horizontal, smooth surface. What is the acceleration of the crate in m/s2
By what factor would its kinetic energy decrease if the car traveled half as fast
A cylinder of mass 6.6 kg and radius 0.10 m rolls along a level floor. Its center of mass has a speed of 0.8 m/s. Find the kinetic energy of rotation
Compute the mean and maximum velocities for a liquid with a flow rate of 20 L/min in a 1.5-in nominal diameter sanitary pipeline
A block of ice of mass 8 kg, released from rest at the top of a frictionless ramp of a 1.50m long slides downhill, reaching a speed of 2.50 m/s at the bottom.
A photon with energy 0.50 eV is barely capable of causing a photoelectric effect when it strikes a metal plate. Find the speed of the released electron far from the nucleus
Two loudspeakers placed 6.00 m apart are driven in phase by an audio oscillator having a frequency range from 1908 Hz to 2471 Hz, At what frequency of the oscillator does the sound reaching point P interfere constructively
What angular velocity would be required to give a rotating object of mass 25 kg and a radius of 2 m a centripetal force of 50 N
An electric motor rotating a workshop grinding wheel at a rate of 1.09 102 rev/min is switched off. Assume the wheel has a constant negative angular acceleration of magnitude 2.50 rad/s2. (a) How long does it take for the grinding wheel to stop? s (b..
A point source of light is submerged 2.4 m below the surface of a lake and emits rays in all directions. What is the maximum radius that this circle could have
A skier starts from rest at the top of a hill that is inclined at 9.3° with respect to the horizontal. How far does the skier glide along the horizontal portion of the snow before coming to rest
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