If a hockey puck is made to slide along a straight line on a completely frictionless surface, which statement about the motion of the hockey puck is true?
the hockey puck will come to a halt immediately.
the hockey puck will continue moving with constant velocity along a straight line.
the hockey puck will accelerate and continue moving in straight line.
the hockey puck will continue moving in random direction.
Answers: 1
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Total solidification times of three casting geometries are to be compared: a sphere, a cylinder, in which the length-to-diameter ration - 1.0, and a cube. volume = 1000 cm^3 for all three shhapes, and the same casting alloy is used. a) determine the solidification times of each geometry b) based on the results of part (a), which geometric element would make the best riser? c) if the mold constant = 3.5 min/cm^2 in chvorinov's rule, compute the total solidification time for each casting.
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At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid
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Using the free-body diagram, calculate the net force acting on the sled. is the sled in a state of dynamic equilibrium?
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If a hockey puck is made to slide along a straight line on a completely frictionless surface, which...
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