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Escape Velocity Calculator Knowledge Check
Sharpen your escape velocity calculator skills with algorithmically generated problems. Each attempt produces unique values to test your formula knowledge.
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Åbn Lommeregner1 / 10
The escape velocity of a black hole is equal to the speed of light ($3 \times 10^8$ m/s). If a giant star with mass $M = 4 \times 10^{30}$ kg collapses, at what radius (in km) does its escape velocity equal the speed of light? (Use $G = 6.67 \times 10^{-11}$)
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