Answer:
6.40 m/s
Explanation:
Here we have to consider the conservation of energy
Potential energy of a object = Kinetic Energy
Mgh = 1/2 M (v)2
V = root 2gh
V = root 2*10*20.5
V = 6.40 m/s
Answer:
True
Explanation:
A cation is a positively charged ion, with fewer electrons than protons,
An anion is negatively charged, with more electrons than protons.
Answer:
720 J
Explanation:
The gravitational potential energy that Essam loses for every metre is given by:
where
m=72 kg is Essam's mass
is the gravitational field strength
is the difference in height
By substituting the numbers into the formula, we find