Physics, 27.03.2020 02:57, gremar0976
A 10 kg block is pulled across a horizontal surface by a rope that is oriented at 60° relative to the horizontal surface. What is the work (in J) done by the tension in the rope if the block is dragged 10 m at constant velocity? The coefficient of kinetic friction between the block and the floor is 0.2 and you may assume that the magnitude of the tension is constant as the block is pulled.
Answers: 2
Physics, 22.06.2019 05:00, bbygrl70
Aperson stands on a platform, initially at rest, that can rotate freely without friction. the moment of inertia of the person plus the platform is ip. the person holds a spinning bicycle wheel with its axis horizontal. the wheel has moment of inertia iw and angular velocity ωw. take the ωw direction counterclockwise when viewed from above. part a what will be the angular velocity ωp of the platform if the person moves the axis of the wheel so that it points vertically upward?
Answers: 1
Physics, 22.06.2019 14:30, rachel2005smith
Increasing the pressure on one spot of a fluid will increase the pressure everywhere else in the fluid a. pascals principal b. archimedes' principal c. bernoulli's principal
Answers: 1
Physics, 22.06.2019 16:20, jmackenzie7
How does a circuit breaker protect a refrigerator? a. when the current is too high, a metal strip in the fuse melts and opens the circuit. b. when the resistance is too high , a re-settable which opens a circuit c. when the current is too high , a re-settable switch opens the circuit d. when the resistance is too high a metal strip in the fuse melts and opens the circuit
Answers: 2
A 10 kg block is pulled across a horizontal surface by a rope that is oriented at 60° relative to th...
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