Question

How much hydrogen does a Main Sequence star of 29 solar masses approximately consume each second?

8x1016 kg 3x1017 kg 6x1015 kg 2x101" kg 9x1013 kg

The green box is the right answer, but how do you solve it, so you get the right answer?

Please, show and explain what you do along the way step-by-step :-)

Answer 1

Given that Lets hydrogen does a main Sequence star of 29 solar masses approximately consume each second. Let find the life time (t) of this solar its makes as mass defect delta m = 4mn - M_ne delta m = 0.7% of mn t = 0.07 times mc^2/L m = 29 m_circledotoperator L = 29^3.8 L_circledotoperator for main sequence L_circledotoperator = 3.9 times 10^26 J/Sec \r\n mass consumed each sec m = m/t m = mL/0.007 mc^2 m = 29^3.5 times 3.9 times 10^26/0.007 times (3 times 10^8)^2 m = 131338.7 times 3.9 times 10^26/0.007 times 9 times 10^16 m = 5.1222171 times 10^31/6.3 times 10^14 m = 8.14 times 10^16 Therefore m = 8.14 times 10^16 kg/sec