Before the star that became sn 1987a exploded, it evolved from a red supergiant to a blue supergiant while remaining at the same luminosity. as a red supergiant, its surface temperature would have been approximately 4000 k, while as a blue supergiant, its surface temperature was 16,000 k. how much did the radius change as it evolved from a red to a blue supergiant?
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Physics, 22.06.2019 08:30
Hey student studies gravity using objects that have the same mass which two objects have the greatest gravitational force acting between them a. 100kg 1.0m 100kg b. 100kg 2.0m 100kg c. 100kg 2.0m 100kg big d. 100kg big 3.0m 100kg big
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Physics, 22.06.2019 14:00
Which body part transports oxygen removes waste materials in carries nutrients to the body as part of the circulatory system
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Physics, 22.06.2019 15:20
Abag of potato chips contains 2.00 l of air when it is sealed at sea level at a pressure of 1.00 atm and a temperature of 20.0 deg c. what will be the volume of the air in the bag if you take it with you, still sealed, to the mountains where the temperature is 7.00 deg c and atmospheric pressure is 70.0 kpa? assume that the bag behaves like a balloon and that the air in the bag is in thermal equilibrium with the outside air.
Answers: 3
Physics, 22.06.2019 20:00
Abumper car with a mass of 250 kg is traveling at a speed of 4 m/s. this bumper car collides and sticks to a second bumper car with a mass of 250 kg, which is initially at rest. what is the final speed of these two bumper cars after the collision, assuming they remain stuck together?
Answers: 1
Before the star that became sn 1987a exploded, it evolved from a red supergiant to a blue supergiant...
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