The spiral galaxy in the Andromeda constellation is about 2 × 1019 km away from us. How many light-years is this?
1. 3.48837 × 106 c.
2. 1.62791 × 106 c.
3. 7.39958 × 105 c.
4. 1.08668 × 107 c.
5. 2.11416 × 106 c.
6. 5.09514 × 106 c.

5. 2.11416 × 10^6 c.

Explanation:

First thing to Know is the conversion factor from km to light year which is

1 kilometre =

1.057 × 10-13 light-year.

So

2 × 10^19 km is equal to

2 × 10^19 * 1.057 × 10-13

2 × 10^19 km = 2.114 * 10^6c

this means that the temperature of both substances will be equal

force is mass*acceleration.

we have a very small mass: 11.4*0.001 kg

if we want 0.035n of force, we need an acceleration:

0.035 = 11.4*0.001*a

a = 0.035/(11.4*0.001) m/s^2