The distance to a star is approximately 42e18 m if this


(a) The distance to a star is approximately 4.2e18 m. If this star were to burn out today, in how many years would we see it disappear?

___ years

(b) How long does it take for sunlight to reach Jupiter?

___ minutes

(c) How long does it take for a microwave radar signal to travel from Earth to the moon and back?

___ seconds

(d) How long does it take for a radio wave to travel once around the earth in a great circle, close to the planet's surface?

___ seconds

(e) How long does it take for light to reach you from a lightning stroke 10.0 km away?

___ seconds

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Physics: The distance to a star is approximately 42e18 m if this
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