What is the mass of the invisible star

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Reference no: EM138520

Q1. Black Holes are suspected while a visible star is being noticeably pulled by an invisible partner that is more than4 times as massive as the Sun. A red giant star is accelerated in a linear direction by gravity at 0.077 m/s2 towards an object that is 9.4 x1010 m away.

a) What is the mass of the invisible star? Reply using scientific notation (eg. 1e+10). Kg

b) by what factor is the star more massive than our Sun? React in decimal.

Q2. Hair dryer draws a current of 9.2a. How long does it take 1.9*10^3 C of charge pass through? How many electrons does this represent?

Reference no: EM138520

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