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Q. A baseball (m = 137 g) approaches a bat horizontally at a speed of 40.6 m/s (91 mi/h) and is hit straight back at a speed of 45.1 m/s (101 mi/h). If the ball is in contact with the bat for a time of 1.00 ms, what is the average force exerted on the ball by the bat? Neglect the weight of the ball, since it is so much less than the force of the bat. Choose the direction of the incoming ball as the positive direction.
For a damped oscillator with a mass of 320g, a spring constant 82N/m and a damping coefficient of 71g/s, what is the ratio of the amplitude of damped oscillations to the initial amplitude at the end of 28 cycles.
What is the most amounts by which the wavelength of an incident photon could change when it undergoes Compton scattering from an atom or molecule with a 19 u mass .
Will the car hit the barricade
How long would it take you to cover the 83 length of the walkway if, once you get on the walkway, you at once turns around and start walking in the opposite direction with a speed of 1.7 relative to the walkway.
A projectile is fired horizontally from a gun that is 47.0 m above flat ground; emerging from the gun with a speed of 250 m/s.
For a rough calculation, we shall assume that the doctor is 50 from the baby (she is likely to be even closer at delivery), has a mass of 75.00, and can be modelled as a uniform sphere.
In NYU's Diffraction and interference lab for general physics 2, what are the widths given on the slide with the double slits. On the lab manual it says they were given on the slide.
How greatly time elapses before the compass hits the ground
A loudspeaker of mass 21.0 {rm kg} is suspended the distance of h = 2.40 {rm m} below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l = 3.90 {rm m}.
A weather vane at first at rest has a moment of inertia of 0.111 kg • m2 about its axis of rotation. A 53.0 g piece of clay is thrown at the vane and sticks to it at a point 19.5 cm from the axis. The initial velocity of the clay is 20.0 m/s, directe..
An instructor wants to use a lens to project the real image of a light bulb onto a screen 1.23 m from the bulb. In order to get the image to be two times as large as bulb, what focal length lens will be required.
A 73 trampoline artist jumps vertically upward from the top of a platform with a speed of 4.0. If the trampoline behaves like a spring of spring constant 6.2×104, how far does he depress it.
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