Question

The size of the earth (12,700km) is in 1cm scale.
in the reference of above scale measurement,
a.how large is the sun having diameter (1.4*10^6 km) in that scale?
b.how far away is the nearest star (distance=4.24 light years) in that scale?

Answer 1

Answer:

Explanation: 1 light year = 5.88 E+12 miles. So, at 2000 mph, the time to reach Alpha Centauri is 4 X 5.88E+12/2000 hours = 1.176E+10 hours = 1.176E+10/(24 X 365.256) years = 1341525 years. Even to reach close by Mars, at your speed, it might take 8 years.