It should be an Electrical conductor, since conductors allow for movement of electrons from one point to another.
The direction of the friction force is the same than the movement, but its sense is the opposite.
Forces are by the cable, gravity and normal force by the incline.
Answer:
in salt water
Explanation:
The buoyant force acting on a body depends on the volume of body immersed, density of liquid in which the body is immersed and acceleration due to gravity.
Buoyant force = Volume immersed x density of liquid x g
As the density of salt water is more than the fresh water so the buoyant force acting on the boat in salt water is more than the fresh water.
<h2>
Answer: B. Period of the orbit</h2>
Explanation:
According to the Third Kepler’s Law of Planetary motion <em>“The square of the orbital period of a planet is proportional to the cube of the semi-major axis (size) of its orbit”.
</em>
Talking in general, this law states a relation between the orbital period 
of a body (moon, planet, satellite) orbiting a greater body in space with the size 
of its orbit.
This Law is originally expressed as follows:
Where;
is the Gravitational Constant
is the mass of the massive (greater) body
is the semimajor axis of the orbit of the smaller body
