That is called the "Revolution Period of a planet" and one year on mercury equals to 88 days as compared to Earth
In short, Your Answer would be 88
Hope this helps!
The kinetic energy of a moving object is calculated through the equation,
KE = 0.5mv²
where m is the mass and v is the velocity.
Substituting the known values,
KE = 0.5(620 kg)(9 m/s)²
KE = 25,110 J
Thus, the kinetic energy is equal to 25,110 J.
-- If velocity is constant, then there is no net force
on the chair.
-- If there is no net force on the chair, then friction
must exactly balance out your push.
-- The force of friction is exactly equal in magnitude
to your push, and in exactly the opposite direction.
Answer:
Commutator is a ring which reverse the direction of current in AC circuit so that the coil connected to it will continuous to move in the same direction.
Explanation:
In motors there exist a coil which is rotated due to torque of magnetic field when current flow through it. Since AC current is used to run the motor so we know that AC current changes its direction after half cycle.
So here commutator plays an important role to reverse the direction of current after every half cycle so that the current goes in same direction always into the coil.
This will produce a constant direction torque on the coil so that it will rotate in same sense always.
So commutator role is to provide same direction current to the coil by reversing its direction after every half cycle
Your answer is.......a car moved 60 km East and 90 km in west.
