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A small object begins a free-fall from a height of H = 82.5 m at t0 = 0 s. After? = 2.60 s, a second small object is launched vertically up from the ground with the initial velocity v0 = 40.2 m/s. At what height from the ground will the two objects first meet?
A hollow sphere of radius 0.10 m, with rotational inertia I = 0.084 kg m2 about a line during its center of mass, rolls without slipping up a surface inclined at 31° to the horizontal. At a certain initial position, the sphere's total kinetic energy ..
A hotel elevator ascends 140 {rm m} with a maximum speed of 4.59 {rm m/s}. Its acceleration and deceleration both have the magnitude of 1.93 {rm m/s^2}. How long does it take to make complete trip from bottom to top.
a father exerts a 2.51 102 n force to pull a sled with his daughter on it combined mass of 77.9 kg across a horizontal
A 0.15-kg bullet is fired with a velocity of 86.9 m/s into a solid cylinder of mass 24.1 kg and radius 0.23 m. Find the angular speed of the system after the bullet strikes and adheres to the surface of the cylinder
Consider a particle of spin 1/2 in a magnetic field B= (0, 0,B0). If the initial spin state of the electron is X+ = (1,0), then the Larmor precession:
A large water tank has an inlet pipe and an outlet pipe. The inlet pipe has a diameter of 2.05 cm and is 2.15 m above the bottom of the tank. What is the gauge pressure in the outlet pipe
A uniform meter stick of mass M is pivoted on a hinge at one end and held horizontal with a spring with spring constant k attached at the other end. If the stick oscillates up and down slightly, what is its frequency? [Hint: Write a torque equation a..
A pair of speakers separated by 0.700m are driven by the same oscillator at a frequency of 658 Hz. An observer, originally positioned at one of the speakers, begins to walk along a line perpendicular to the line joining the speakers.
A 76 kgbicyclist rides his 10.3 kg bicyclewith a speed of 15.3 m/s. What is the magnitude of the braking force
A photon having E = 15.2 keV energy scatters from a free electron inside a metal. What is the maximum energy the electron can gain from the photon, At which angle will the electron scatter
A child playing in a swimming pool realizes that it is easy to push a small inflated ball under the surface of the water while a large ball requires a lot of force. calculate the diameter of the ball
Oppositely charged parallel plates are separated by 5.30 mm. A potential difference of 600 V exists between the plates. What is the magnitude of the electric field between the plates
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