A man pulled a 17.0 kg object 11.2 cm vertically with his teeth. (a) How much work (in J) was done on the object by the man in this lift, assuming the object was lifted at constant velocity? (Include the sign of the value in your answer.) 18.6592 V 18.7 J

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A: mass = 2.50 Kg d = 2.20  F = 16N directed towards below the horizontal

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Q: A block of mass 2.50 kg is pulled 2.20 m along a frictionless horizontal table by aconstant 16.0 N…

A: The figure is shown below:

Q: A 65-kg woman runs up a flight of stairs in 10.0 s. Her net upward displacement is 3.0 m.…

A:

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Q: Help me please

A: mass of beam (m) = 425 kg distance moved (d) = 117 m acceleration (a) = 1.8 ms2

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A: Part D) The instantaneous power at the end of third second is    P=Wt   =1.13 J3 s    =0.377 W

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Q: 2 F (N)A 10 Find the work done by the variable force. -x(m) 25 50 125 J 250 J 562.5 J

A: Given:

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A: solution as

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Proper Length

The theory of special relativity explains the connection between space and time to objects that move in a straight line at a constant speed. The objects move at the speed of light. When an object approaches light speed, its mass is endless and cannot move faster than light. The most crucial postulate of Einstein's special relativity is that the laws of nature do not change in each frame of reference.