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A brick weighing 30 N falls from a height of 15 m and sinks 0.7 m into the ground. What is the average force on the rock due to the ground as it sinks into the ground?
Calculate the firm's earnings per share (EPS). Explain how large a per-share cash dividend did the firm pay on common stock during 2011?
A tire is filled with air at 15 oC to a gauge pressure of 220 kPa. If the tire reaches a temperature of 38 oC, How much energy do you need to boil off 2 kg block of ice
A ball falls straight down onto a wedge that is sitting on frictionless ice. The ball has a mass of 3.21 kg, what is the velocity of the ball after the collision
At large distances, a bar magnet acts like the magnetic dipole created by a current carrying loop. Imagine such a magnet is oriented as shown. What is the magnetic dipole moment of the bar
A child's toy consists of a m = 26 g monkey suspended from a spring of negligible mass and spring constant k. calculate the speed of the monkey in Ve m/s as it passes through equilibrium
A rock of mass 0.210 kg falls from rest from a height of 20.8 m into a pail containing 0.429 kg of water. determine the rise in temperature of the rock
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 4.0 kg mass is hung vertically from a spring with a spring constant of 510 N/m. It is pulled down from its equilibrium position by 2.0 cmand allowed to oscillate. What are the period and frequency of oscillation
A 70·kg packing crate is pulled with constant speed across a rough floor with a rope that is at an angle of 37.0° above the horizontal. What is the total work done on the box by all forces
The frequency and wavelength of a transverse wave on a string are 340 Hz and 0.70 m, respectively. what is the linear density of the string
A 27.4 kg runaway grocery cart runs into a spring with spring constant 387 N/m and compresses it by 75.5 cm. What was the speed of the cart just before it hit the spring
A projectile is launched from 1.5 m above the ground at some angle theta. what was its initial velocity and the angle of projection theta
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