force times gravity (FG) =mass times gravity (mg)
Concave lens. These are used in making the objectives of reflection telescopes
G.P.E = mgh
Weight = mg = 200N
So G.P.E = 200 * 2 = 400 Joules
According to wikipedia <em>a mid-ocean ridge is an underwater mountains system formed by tectonic plates.
</em>Happy studying!<em>
</em>
Force = (mass) · (acceleration)
= (15 kg) · (8 m/s²)
= 120 kg-m/s² = 120 newtons
