Physics, 16.10.2019 05:30 cvbnkifdfg
Abox is dropped from a spacecraft moving horizontally at 27.0 m/s at a distance of 155 m above the surface of a moon. the rate of freefall acceleration on this airless moon is 2.79 m/s2. (a) how long does it take for the box to reach the moon's surface? (b) what is its horizontal displacement during this time? (c) what is its vertical velocity when it strikes the surface? (d) at what speed does the box strike the moon?
Answers: 1
Physics, 22.06.2019 18:00
According to newton’s law of universal gravitation, which statements are true? as we move to higher altitudes, the force of gravity on us decreases. as we move to higher altitudes, the force of gravity on us increases. as we gain mass, the force of gravity on us decreases. as we gain mass, the force of gravity on us increases. as we move faster, the force of gravity on us increases.
Answers: 2
Physics, 22.06.2019 18:30
How many meters will a car travel if its speed is 45 m/s in an interval of 11 seconds? question 2 options: a) 450 meters b) 495 meters c) 4.09 meters d) 498 meters
Answers: 2
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
Abox is dropped from a spacecraft moving horizontally at 27.0 m/s at a distance of 155 m above the s...
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