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You are pushing a 142 kg wooden crate in a straight line a distance of 5.1 m across a wooden floor. The crate is speeding up at 0.30 m/s^2. The static and kinetic coefficients of friction are 0.51 and 0.41, respectively. What is the work done by friction on the crate?
An object is 12.0 cm from the surface of a spherical Christmas tree ornament that is 8.00 cm in diameter. What is the magnification of the image
A disk rotates about a fixed axis with an initial angular velocity of 20 rad/s. During a 5.0-s interval the angular velocity decreases to 10 rad/s. How many radians does the disk turn through during the 5.0-s interval
A solid cylider of mass 9.8 kg and radius 28 cm is yoked to a spring as shown. What is the angular frquency of the cylinder rolling back
A child slides down a playground slide; the coefficient of the kinetic friction is uk=0.15, with what speed does she exit the slide
A 2.1-kg block is released from rest and allowed to slide down a frictionless surface and into a spring. The far end of the spring is attached to a wall, as shown. The initial height of the block is 0.36 m above the lowest part of the slide and the s..
Illustrate what is the tangential velocity of the bug? One second after the bug starts from rest, what are its tangential acceleration, radial acceleration, and total acceleration(with the degree)
A laser is mounted on a table 1.00m above the ground, pointed at a vertical mirror a horizontal distance 3.48maway. At what height does the reflected beam strike the wall
A war-wolf or trebuchet is a device used during the Middle Ages to throw rocks at castles and now sometimes used to fling large vegetables and pianos as a sport. A simple trebuchet.
A rock is thrown vertically up at 6.7 m/s. (a) What is it's height when its velocity is 1.35 m/s? (b) Has the rock made it to the highest point in the path?
Consider a bar (L=3.00m) is sliding to the right on 2 rails with a velocity (0.75 m/s) towards a resistor (20 ohms), calculate the "Magnetic Braking force"
The nucleus of an atom can be modeled as several protons and neutrons closely packed together. Each particle has a mass of 1.67 10-27 kg, Estimate the density of the nucleus of an atom
Why is surface wind always directed at some angle across sea-level isobars toward lower pressure? Why is the surface wind directed across the sea-level isobars at a greater angle in Madison than over the middle of Lake Michigan.
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