Physics, 17.10.2019 21:30 BraceFaceZariaOn32

Gets ! read the following list of objects: the water behind a dam, a fully wound watch spring, a swing moving back and forth, an object moving on earth's surface, a roller coaster cart when it hits the lowest point of the track which statement is correct? a swing moving back and forth and the water behind a dam have only kinetic energy. a fully wound watch spring and a swing moving back and forth have only potential energy. the water behind a dam and a roller coaster cart when it hits the lowest point of the track have only potential energy. an object moving on earth's surface and a roller coaster cart when it hits the lowest point of the track have only kinetic energy.

Answers: 1

Show answers

Another question on Physics

Physics, 22.06.2019 13:30

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ºc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in ×10^{-3} −3 m)

Answers: 1

Answer

Physics, 22.06.2019 14:40

An athlete is holding 24 lb of weights at a height of 6 inches above the stack as shown. to lower the weights, she applies a constant force of 5 lb to the handle. determine the velocity of the weights immediately before they hit the stack.

Answers: 1

Answer

Physics, 22.06.2019 14:40

During the experiment if you could triple the breakaway magnetic force with all other quantities left unchanged, what is the new value for the critical velocity if it was v0 (initial velocity), initially? (b) now if you halved the radius with all other quantities left unchanged, what is the new critical velocity if it was v0 (initial velocity), initially? (c) if during the experiment, critical velocity quadrupled with all other quantities left unchanged, what is the new breakaway force if its magnitude was initially f0,?

Answers: 1

Answer

Physics, 22.06.2019 19:30

Refrigerant-134a flows through a carnot heat pump cycle at 0.5 kg/s. it is known that the maximum absolute temperature in the cycle is 1.1 times the minimum absolute temperature, and the net power input to the cycle is 2.5 kw. if the refrigerant changes from a saturated vapor to a saturated liquid during the heat rejection process, determine the maximum magnitude of the enthalpy of vaporization for this process in kj/kg (with 3 significant figures).

Answers: 3

Answer

You know the right answer?

Gets ! read the following list of objects: the water behind a dam, a fully wound watch spring, a sw...

Questions