Physics, 14.09.2019 10:30 monsterduckgoose
An engine extracts 441.3kj of heat from the burning of fuel each cycle, but rejects 259.8 kj of heat (exhaust, friction, etc) during each cycle. what is the thermal efficiency of the engine?
Answers: 1
Physics, 22.06.2019 05:00
Which statements describe the movement of ocean currents around the globe? check all that apply. strong winds force warm water to sink to the ocean floor. the coriolis effect causes warm and cold water to mix. cool dense water sinks to the ocean floor. warm water replaces cool surface water. wind blowing parallel to the shore causes upwelling of cool water.
Answers: 1
Physics, 22.06.2019 16:30
3. a lunar exploration vehicle was created by a research team. it weighs 3,000 kg on the earth. it needs an acceleration of 10 m/s2 on the moon. in order to have the same acceleration, what will be the net force acting on the vehicle on the earth?
Answers: 2
Physics, 22.06.2019 22:30
The drag force, fd, imposed by the surrounding air on a vehicle moving with velocity v is given by fd = cdaĎv 2/2 where cd is a constant called the drag coefficient, a is the projected frontal area of the vehicle, and Ď is the air density. an automobile is moving at v = 80 kilometers per hour with cd = 0.28, a = 2.3 m2, and Ď = 1.2 kg/m3.
Answers: 2
Physics, 22.06.2019 23:50
What would be the radius of the earth if it had its actual mass but had the density of nuclei? express your answer to two significant figures and include the appropriate units.
Answers: 2
An engine extracts 441.3kj of heat from the burning of fuel each cycle, but rejects 259.8 kj of heat...
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