Metric conversion stands for converting a unit into an SI unit
so the answer in this case will be A.
The variable x would be 4
let the mass of the two objects be m₁ and m₂ respectively and the distance between the two objects be "r₁" initially.
the gravitational force between the two objects initially is then given as
F₁ = G m₁ m₂ /r₁² eq-1
where G = universal gravitational constant
when the objects are moved closer and the distance between the objects become one third of the original distance, hence
r₂ = distance after objects moved closer = r₁/3
new gravitational force between the objects after they are moved closed is given as
F₂ = G m₁ m₂ /r₂² eq-2
dividing eq-2 by eq-1
F₂/F₁ = (G m₁ m₂ /r₂² )/(G m₁ m₂ /r₁²)
F₂/F₁ = r₁²/r₂²
we know that , r₂ = r₁/3
hence
F₂/F₁ = r₁²/(r₁/3)²
F₂/F₁ = 9
F₂ = 9 F₁
hence the gravitational force becomes nine times its initial value
Explanation:
a) The displacement is the area under the curve.
Δx = ½ (10 s) (20 m/s) + (20 s) (20 m/s) + ½ (10 s) (20 m/s)
Δx = 600 m
b) The car is accelerating when the velocity is changing. This happens between t = 0 and t = 10, and between t = 30 and t = 40.
c) Average speed = displacement / time
v_avg = 600 m / 40 s
v_avg = 15 m/s
Medium is the material in which a mechanical wave travels.