A light year is a unit for length that is used for very great distances. This is approximately equal to 9.4607 x 10^12 km. Multiplying this distance to 4.37 will give us an answer of 4.134 x 10^13 km. Dividing this by the speed of light, 3 x 10^8 m/s will give us an answer of,
137810863.3 s
Also equal to 4.37 years.
This is simply referring to the fact that the gravitational pull of the earth is greater as you get closer to the surface of the earth, meaning that acceleration increases as well.
<span>The answer to your question would be:
3. The same</span>
The amount left of a given substance can be calculated through the equation,
A = (A0) x 0.5^n/h
From the given scenario,
A/A0 = 0.75 = 0.5*(60/h)
The value of h from the equation is 144.565 minutes.