Supernovae, neutron stars, and black holes (AQA A-Level Physics): Quizzes

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Supernovae, neutron stars, and black holes
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What is the approximate value of one solar mass?

2×10302 \times 10^{30} kg

During the main sequence stage, what two forces are in equilibrium?

Gravity inward & fusion pressure outward

Stars with mass less than what value become red giants?

3 solar masses

What is the maximum mass for a star to become a white dwarf?

< 1.4 solar masses

Approximately how much energy can a supernova release?

~104410^{44} J

What is the approximate density of a neutron star?

~101710^{17} kg/m³

Stars with mass greater than what value form black holes?

3 solar masses

What is the formula for the Schwarzschild radius RsR_s?

Rs=2GMc2R_s = \frac{2GM}{c^2}

Why are Type Ia supernovae used as standard candles?

Consistent peak absolute magnitudes

Where are supermassive black holes typically located?

Centre of most galaxies

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