Physics, 13.07.2019 05:30 skyvargasov9cad
Imagine that an astronomer discovers a new star with a surface temperature of 12,000 k and a luminosity 100 times greater than the sun. details of the spectra indicate that it is on the main sequence. which of these would be the best estimate for its mass? o about 1/2 the mass of the sun o about the same mass as the sun o about 7 times the mass of the sun o about 13 times the mass of the sun d question 10 1 pts a spectrum is measured for a new star. it has a temperature of about 4000 k, and it is on the main sequence. which of the following statements would be correct estimates for other properties? o i it has a luminosity of about 0.001 and a mass of about 0.1 times the mass of the sun o it has a luminosity of about 1 and a mass that is about the same as the mass of the sun o it has a luminosity of about 100 and a mass of about 5 times the mass of the sun o it has a luminosity of about 0.05 and a mass of about 0.4 times the mass of the sun macbook air oo a fs 17 sk 4 5 7 8 9
Answers: 3
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Explain how the energy of rubber ball is tranforned as it roll down a ramp. give evidence that the energy of the og the ball remains the same at all points on the ramp
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Physics, 22.06.2019 05:50
Acylinder with a movable piston contains 11.7 moles of a monatomic ideal gas at a pressure of 1.32×10^5 pa. the gas is initially at a temperature of 300 k. an electric heater adds 43200 j of energy into the gas while the piston moves in such a way that the pressure remains constant. cp=20.79 j k^−1 mol^−1 for a monatomic ideal gas, and that the number of gas molecules is equal to avogadro's number (6.022×10^23) times the number of moles of the gas. (a) what is the temperature of the gas after the energy is added? (b) what is the change in volume of the gas? (c) how much work is done by the gas during this process?
Answers: 3
Imagine that an astronomer discovers a new star with a surface temperature of 12,000 k and a luminos...
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