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Space-time quick check

A quick check of 3 questions. After you submit, each question shows the right answer and why.

3 of 9 questions, Advanced level. Aimed at the Advanced level, your current depth. Questions you have not answered yet come first.

Show all 9 questions

ScientistQuestion 1 of 3

Light travels at exactly 299,792,458 m/s. How far, in kilometres, does light travel in 38 microseconds — the daily GPS clock drift? Give one decimal place.

AdvancedQuestion 2 of 3

Einstein's 1911 (Newtonian-equivalent) calculation gave a deflection of 0.875 arcseconds for starlight at the Sun's edge, while full general relativity gave 1.75 arcseconds. By what factor does the relativistic prediction exceed the Newtonian one?

AdvancedQuestion 3 of 3

Why was Mercury's orbit an important early test of general relativity?