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A rock is dropped straight down from the top of a 49.2 meter building. How long does it take for the rock to hit the ground?
How fast is the rock moving on impact?
Roughly, how fast is this in miles per hour?
Chuck Norris's razor blade has an output force of 2500 lbs is used to shear his burley face. The shaving blade has the 0.35 inch thick blade with a 55 degree slope.
A ping pong ball of mass 100 grams travelling at 10 m/s hits a stationary bowling ball of mass 3 kg, head on. determine the final velocities of both balls
q1. two stationary positive point charges charge 1 of magnitude 355 nc and charge 2 of magnitude 1.8 nc are separated
Demonstrate your understanding of how the increases and/or changes in court workloads are impacting the offices that are responsible for court management.
Seismic p-waves travel at abou 6 km/s and s-waves at 4 km/s. how far away was the earthquake that produced them
The force on a particle is directed along an x axis and given by F = 0.97(x/4.6 - 0.52) where x is in meters and F is in Newtons. Find out the work done by the force in moving the particle from x = 0 to x = 8.9 m.
A concave mirror (R = 56.0 cm) is used to project a transparent slide onto a wall. How far from the wall should the mirror be located
In the Bohr theory of the hydrogen atom, an electron moves with constant speed in a circular orbit about a proton, where the radius of the orbit is 0.53 x 10-10 m, Determine the electrostatic force exerted by the proton on the electron
A 45 kg girl is standing on a 130 kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. The girl begins to walk along the plank at a constant velocity of 1.33 m/s relative to the plank.
Five seconds later, the police officer leaves on her motorcycle, starts her stopwatch, and accelerates at 2 m/s^2 toward the car. According to her stopwatch, how many seconds until she catches the car
A potter's wheel having a radius 0.55m and a moment of inertia 12.5 kg·m2 is rotating freely at 55rev/min. The potter can stop the wheel in 6s by pressing a wet rag against the rim and exerting a radially inward force of 68 N.
A disk spinning with angular velocity , w=12 rad/s slows down to a stop in 4 seconds. What is the angular displacement delta theta
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