Can someone solve the blank questions? I am really having trouble solving them. Thank you!
...
Physics, 13.08.2020 20:01 tanya44737
Can someone solve the blank questions? I am really having trouble solving them. Thank you!
Answers: 3
Physics, 22.06.2019 10:40
As you are trying to move a heavy box of mass m, you realize that it is too heavy for you to lift by yourself. there is no one around to , so you attach an ideal pulley to the box and a massless rope to the ceiling, which you wrap around the pulley. you pull up on the rope to lift the box. use g for the magnitude of the acceleration due to gravity and neglect friction forces. once you have pulled hard enough to start the box moving upward, what is the magnitude f of the upward force you must apply to the rope to start raising the box with constant velocity? express the magnitude of the force in terms of m, the mass of the box.
Answers: 1
Physics, 22.06.2019 20:50
An ideal otto cycle has a compression ratio of 8. at the beginning of the compression process, air is at 95 kpa and 27°c, and 750 kj/kg of heat is transferred to air during the constant-volume heat-addition process. assuming constant specific heats at room temperature, determine (a) the pressure and temperature at the end of the heat-addition process, (b) the net work output, (c) the thermal efficiency, and (d) the mean effective pressure for the cycle. (4390 kpa, 1730 k; 423 kj/kg; 56.4%; 534 kpa)
Answers: 1
Physics, 23.06.2019 00:00
You notice the birds sitting on the electrical wires which of the following explain why the birds don't get shocked
Answers: 2
Physics, 23.06.2019 03:00
Suppose the house in question 3 is located in cleveland where the annual average solar flux is 160 w/m2 . if 10 m2 of solar panels operating at 20 percent efficiency were installed on this house to collect and store solar energy in the form of hot water:
Answers: 2
History, 22.05.2020 10:03
Social Studies, 22.05.2020 10:03
Computers and Technology, 22.05.2020 10:03
Chemistry, 22.05.2020 10:03
Chemistry, 22.05.2020 10:03
Mathematics, 22.05.2020 10:03
History, 22.05.2020 10:03
History, 22.05.2020 10:03
Physics, 22.05.2020 10:03
Mathematics, 22.05.2020 10:03
Mathematics, 22.05.2020 10:03
Mathematics, 22.05.2020 10:03
Mathematics, 22.05.2020 10:03
History, 22.05.2020 10:03
Mathematics, 22.05.2020 10:03