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Imagine that you have a solid cylinder (M = 2 kg, R = 0.1m, I =12MR2) and have wound a very light wire around it many times. You then attach a block of mass m = 1kg to the end of the wire, and allow the block to fall (starting from rest), unwinding the string, which causes thecylinder to rotate. What is the block's speed just as it reaches the ground, 2 m below from where it started?
What did Newton discover about gravity? 1. All objects near the Earth free fall with the same acceleration. 2. Any force on a planet would be directed along its path. 3. Gravity only happens on Earth.
A parallel beam of light from a He-Ne laser, with a wavelength 633 nm, falls on two very narrow slits 0.050mm apart. How far apart are the fringes in the center of the pattern
Compute the expected sea level rise for the projected 4°C mean global temperature rise anticipated by 2100. The average depth of the ocean is 3790 m, but you will not consider this whole depth to be expanding. Instead you will only consider the ex..
A uniform ladder 7.34m long weighing 410N rests with one end on the ground and the other end against a perfectly smooth vertical wall. What force does the wall exert on the ladder
A snowboarder is pulled by a tow rope along a horizontal surface with a constant force of 60 N. How far must the boarder be pulled, starting from rest, so that her final kinetic energy is 500 J.
A snowboarder starts from rest and rides 39.47 m down a snow-covered slope that makes an angle of 33.19° with the horizontal, How far will she travel along the flat snow
A very slippery ice cube slides in a vertical plane around the inside of a smooth, 20 cm diameter horizontal pipe. Find an algebraic expression for the ice cube's speed
Hoover Dam on the Colorado River is the highest dam in the United States at 221 m, with an output of 1300 MW. Calculate the power in this flow
The greatest value ever achieved for the speed of sound in air is about 0.84 × 104 m/s, and the highest frequency ever produced is about 1.9×1010 Hz. Discover the wavelength of this wave. Answer in units of m.
Determine how much work does the electric field do in a moving -7.3 µC charge from ground to a point whose potential is +55 Volt higher
A 100kg astronaut carrying a 1kg ball as she flies past a space station with a velocity of 3/5. what is her mass after throwing the ball
a 1.5- block rests on top of a 7.5- block. the cord and pulley have negligible mass and there is no significant
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