The place you get your hair cut has two nearly parallel mirrors 7.00 apart. as you sit between these mirrors in the chair, your head is 2.50 from the mirror in front of you. looking toward this mirror, you first see your face and then, farther away, the back of your head. side note: the mirrors need to be slightly nonparallel for you to be able to see the back of your head, but you can treat them as parallel in this problem. neglect the thickness of your head. 1.how far away does the back of your head appear to be? (from you)
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Physics, 22.06.2019 03:00
Arotating space station is said to create “artificial gravity”—a loosely-defined term used for an acceleration that would be crudely similar to gravity. the outer wall of the rotating space station would become a floor for the astronauts, and centripetal acceleration supplied by the floor would allow astronauts to exercise and maintain muscle and bone strength more naturally than in non-rotating space environments. if the space station is 200 m in diameter, what angular velocity would produce an “artificial gravity” of 9.80 m/s^{2} 2 at the rim?
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Physics, 22.06.2019 03:00
Which law represents the thermodynamic statement of the conservation of energy of a system? a. the fourth law b. the first law c. the second law d. the third law
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Physics, 22.06.2019 04:00
Ametal ball with a mass of 0.028 kg is dropped from rest at a height of 1.0 meters above the ground. assuming the energy in the ball is conserved, how much kinetic energy will the ball have when it is 0.5 meters above the ground?
Answers: 1
Physics, 22.06.2019 06:30
At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid
Answers: 2
The place you get your hair cut has two nearly parallel mirrors 7.00 apart. as you sit between these...
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