Physics, 18.08.2019 03:20 avadestinyy
Galaxy a is moving away from us with a speed of 0.85c relative to the earth. galaxy b is moving away from us in the opposite direction with a relative speed of 0.55c. assume that the earth and the galaxies are inertial reference frames. how fast is galaxy a moving according to an observer in galaxy b?
Answers: 2
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How is the gravitational force related to the distance between two objects?
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Physics, 22.06.2019 12:50
The vapour pressure of benzene is 53.3 kpa at 60.6 ยฐc, but it fell to 51.5 kpa when 19.0 g of a non-volatile organic compound was dissolved in 500 g of benzene. calculate the molar mass of the compound.
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Physics, 22.06.2019 13:10
Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above
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Physics, 22.06.2019 15:30
Ametal ring 4.20 cm in diameter is placed between the north and south poles of large magnets with the plane of its area perpendicular to the magnetic field. these magnets produce an initial uniform field of 1.12 t between them but are gradually pulled apart, causing this field to remain uniform but decrease steadily at 0.240 t/s . (a) what is the magnitude of the electric field induced in the ring? (b) in which direction (clockwise or counterclockwise) does the current flow as viewed by someone on the south pole of the magnet?
Answers: 2
Galaxy a is moving away from us with a speed of 0.85c relative to the earth. galaxy b is moving away...
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