Physics, 08.07.2019 17:30 ponylover9655
The work w done in moving an object from (0,0)(0,0) to (13,4)(13,4) subject to a constant force ff is w=f ⋅rw=f ⋅r, where rr is the vector with its head at (13,4)(13,4) and tail at (0,0)(0,0). the units are feet and pounds. (a) suppose the force f=8cosθi+8sinθjf=8cosθi+8sinθj. find ww in terms of θθ. (b) suppose the force ff has magnitude of 55 lb and makes an angle of π6π6 rad with the horizontal, pointing right. find ww in foot-pounds. (use symbolic notation and fractions where needed.)
Answers: 2
Physics, 22.06.2019 07:40
How are series and parallel circuits simililar? both have multiple paths for electrons to travel. both require resistors in their circuits. both require a switch to complete the circuit. both have at least one path for electrons to travel.
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Physics, 22.06.2019 12:10
Ablock having mass m slides down an inclined plane. the force of friction between the block and the inclined plane is f, the block's weight is m g, and the normal force is n. (a) draw a free – body force diagram showing the forces acting on the block. (b) write down all relevant newton’s equations for a given situation.
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Physics, 22.06.2019 18:00
Asynthetic fiber used in manufacturing carpet has tensile strength that is normally distributed with mean 75.5 psi and standard deviation 3.5 psi. how is the standard deviation of the sample mean changed when the sample size is increased from n equals 8 to n equals 47
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The work w done in moving an object from (0,0)(0,0) to (13,4)(13,4) subject to a constant force ff i...
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