Physics, 28.01.2020 00:31 chinadoll24
Suppose a 49-n sled is resting on packed snow. the coefficient of kinetic friction is 0.11. if a person weighing 585 n sits on the sled, what force is needed to pull the sled across the snow at constant speed?
Answers: 2
Physics, 22.06.2019 12:00
Explain why electric current cannot exist if a current doesn't have a voltage source.
Answers: 2
Physics, 22.06.2019 15:30
Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples
Answers: 1
Physics, 22.06.2019 16:00
In which of the following is positive work done by a person on a suitcase
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Physics, 22.06.2019 18:50
An insulated thermos contains 148 g of water at 72.7 ˚c. you put in a 11.7 g ice cube at 0.00 ˚c to form a system of ice + original water. the specific heat of liquid water is 4190 j/kg•k; and the heat of fusion of water is 333 kj/kg. what is the net entropy change of the system from then until the system reaches the final (equilibrium) temperature?
Answers: 2
Suppose a 49-n sled is resting on packed snow. the coefficient of kinetic friction is 0.11. if a per...
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