Answer is b that is Heat energy from below the ground converts water to steam to drive a steam turbine attached to an electrical generator.. .
Gravity is the only one, since there's no air resistance.
<span>When an atomic nucleus emits a beta particle, "Atomic number remains same"
Hope this helps!</span>
Answer:
the mechanical advantage David had when using the pulley is 2.
Explanation:
Given;
load moved by David, L = 350 N
effort applied by David, E = 175 N
The mechanical advantage David had when using the pulley is calculated as;

Therefore, the mechanical advantage David had when using the pulley is 2.