Physics, 12.03.2021 07:20 ayoismeisalex
A car speeds up on a flat stretch of road. Is the engine doing work on the car? If the engine is doing work, is that work positive or negative?
Answers: 1
Physics, 22.06.2019 14:30
The man of mass m1 and the woman of mass m2 are standing on opposite ends of the platform of mass m0 which moves with negligible friction and is initially at rest with s = 0. the man and woman begin to approach each other. derive an expression for the displacement s of the platform when the two meet in terms of the displacement x1 of the man relative to the platform.
Answers: 1
Physics, 23.06.2019 08:00
Which of these best describes the term ecliptic? a. the circle where "earth meets the sky" b. the change in azimuth and altitude of an object c. the point directly above the geographic north pole d. the path of the sun through the constellations of the zodiac
Answers: 2
Physics, 23.06.2019 14:20
Working alone at its constant rate, pump x pumped out ΒΌ of the water in a tank in 2 hours. then pumps y and z started working and the three pumps, working simultaneously at their respective constant rates, pumped out the rest of the water in 3 hours. if pump y, working alone at its constant rate, would have taken 18 hours to pump out the rest of the water, how many hours would it have taken pump z, working alone at its constant rate, to pump out all of the water that was pumped out of the tank? a) 6b) 12c) 15d) 18e) 24
Answers: 1
A car speeds up on a flat stretch of road. Is the engine doing work on the car? If the engine is doi...
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