Physics, 05.05.2020 03:26 itssergioa
Jeffrey is using a pulley to get water from a well. He loops a rope over the top of a pulley wheel, then ties the rope to a bucket. He lowers the bucket into the water. To bring the bucket and water up from the well, Jeffrey pulls down on his end of the rope. Why does Jeffrey apply a pulling force to the rope? A. because work must be done on the pulley before it can do work on the bucket B. to signal to the pulley to start drawing water from the well C. to test the tension in the rope before he uses it to climb down into the well D. because adding his force to the force generated by the pulley will get the job done faster
Answers: 2
Physics, 22.06.2019 11:30, jessecabrown1
If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?
Answers: 1
Physics, 22.06.2019 12:30, spenceraniyah1
An engine undergoes a cycle as shown in the diagram. during a complete cycle the work done by the gas is 28.5×103 j and the energy transferred thermally out is 99.4×103 j. there are 1.5×1024 gas molecules and they have three active degrees of freedom. 6. (6 pts) during which process(es) is energy transferred thermally into the gas? a. 1→2 b. 2→3 c. 4→1 d. 1→2 and 4→1 e. none of the above
Answers: 3
Jeffrey is using a pulley to get water from a well. He loops a rope over the top of a pulley wheel,...
English, 14.04.2020 21:29
Mathematics, 14.04.2020 21:29
Mathematics, 14.04.2020 21:29
Mathematics, 14.04.2020 21:29
Geography, 14.04.2020 21:29