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A steel lift column in a service station is a solid cylinder 4.0 m long and 0.20 m in diameter. Young's modulus for this steel is 20 × 1010 N/m2. By what distance does the column compress when a 5000-kg truck is on it?
A 35.0-kg child swings in a swing supported by two chains, each 2.94 m long. The tension in each chain at the lowest point is 418 N. Find the child's speed at the lowest point
When a high-speed passenger train traveling at 170 km/h rounds a bend, engineer is shocked to see that a locomotive has improperly entered onto the track from a siding and is a distance D = 601 m ahead.
A roller-coaster car may be represented by a block of mass 50.0kg . The car is released from rest at a height h = 57.0m above the ground and slides along a frictionless track. The car encounters a loop of radius R = 19.0m at ground level, as shown..
A .230 kg baseball is thrown with a speed of 41 m/s. If the above ball comes to rest in the catcher's mitt in .085 seconds, how much force does the ball apply on the catcher's mitt
a 30kg child wants to use a 20kg board that is 6.0m long as a seesaw. since all her friends are busy, How far from her will the support be
Magnus has reached the finals of a strength competition. In the first round, he has to pull a city bus as far as he can. One end of a rope is attached to the bus, how much work does the tension force do on Magnus
A 1.5 kg mass is held at rest on top of a frictionless and horizontal table. A light string loops over a pulley which is in the shape of a 10 cm radius solid disk which has a mass of 1.5 kg. What is the acceleration of the falling mass
Estimate the heat flow when a double pane of glass is used with a 4.0 mm air gap between the panes? Each individual glass sheet is 4.0 mm thick
The atomic mass of ammonia is 17 atomic mass units. What is the atomic mass of nitrogen if a molecule of ammonia consists of one atom of nitrogen and three atoms of hydrogen?
A large truck collides head-on with a small car. The car is severely damaged as a result of the collision. According to Newton's third law, how do the forces acting between the truck and car compare during the collision?
if the power generated by a turbine is 20kw, what is the equivalent horsepower of this turbine
The great, grey-green, greasy Zambezi River flows over Victoria Falls in south central Africa. what is the velocity of the water when it hits the bottom
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