Answer:
Option C. Light waves can travel through space, sound waves cannot.
Explanation:
Light is an electromagnetic wave which requires no Meduim for propagation. However, sound wave requires a medium for propagation. Since space is empty, sound can not travel through it.
Answer:
It is impossible to detect underground water from the surface. Dowsing practitioners refuse to explain their secrets.
Explanation:
It would be C as the law says "<span>Formally stated, </span>Newton's third law<span> is: For every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object."</span>
Gravitational Potential Energy of an object is calculated by formula ~
where,
- m = mass of the object = 3500 kg
- g = Acceleration due to gravity = 12 m/s²
- h = height attained by the object = 4 m
Now, let's calculate its potential energy ~
I posted this because I got it correct. The answer is 28J.
