Physics, 15.11.2019 20:31 vanessabeausoleil
A6.7-kg box is being lifted by means of a light rope that is threaded through a single, light, frictionless pulley that is attached to the ceiling. (a) if the box is being lifted at a constant speed of 2.0 m/s, what is the power delivered by the person pulling on the rope? kw (b) if the box is lifted, at constant acceleration, from rest on the floor to a height of 1.2 m above the floor in 0.42 s, what average power is delivered by the person pulling on the rope?
Answers: 3
Physics, 22.06.2019 04:20
Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.
Answers: 3
Physics, 22.06.2019 14:00
Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.
Answers: 1
Physics, 22.06.2019 15:10
In the circuit, the switch s has been open for a long time and r = 125 kohm. it is then suddenly closed. (a) determine the time constant before the switch is closed. s (b) determine the time constant after the switch is closed. _ s (c) let the switch be closed at t = 0. find the current in the switch as a function of time. (use t for time. express your answer in milliamps and seconds.) i(t) =_
Answers: 3
Physics, 22.06.2019 23:30
The photo above shows oil and vinegar in a pitcher. the top make a claim about about the density of the vinegar compared to the density of the oil summarize the evidence to support the claim and explain your reasoning
Answers: 3
A6.7-kg box is being lifted by means of a light rope that is threaded through a single, light, frict...
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