Physics, 31.01.2021 14:00 gemiegenial15
A student pulls a 10 kg wagon with a constant 140 N force at an angle 45 degrees above the horizontal for a distance of 3.0 m. how much work did the student do on the wagon?
what type of motion is the wagon experiencing ( e. g, constant speed, acceleration, etc)?
the student gets tired and his force on the wagon decreases according to the graph at right. what was the work done by the student on the wagon during this part of the motion?
Answers: 3
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
Physics, 22.06.2019 14:30, Paigex3
In order to do work, the force vector must be question 1 options: in a different direction than the acceleration vector. in a different direction than the displacement vector. in the same direction as the displacement vector and the motion. in the same direction as the acceleration vector.
Answers: 1
Physics, 22.06.2019 19:30, QueenNerdy889
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
A student pulls a 10 kg wagon with a constant 140 N force at an angle 45 degrees above the horizonta...
Mathematics, 14.08.2019 08:30