the same amount that it takes to eat an apple out of a cookie jar.
Yes, an equal and opposite force.
Anything that has mass exerts a gravitational field, so yes, earth exerts one.
Gravity exerts an acceleration a= GM/r2 = v2/r.
The same reason bricks exert downward pressure. Gravity.
The force that the machine exerts is the out put force. This is the science definition.
Yes, water exerts pressure on the hull of the submarine.
Mass will exerts a force unless it is massless in relative situation
zero
The same reason bricks exert downward pressure. Gravity.
Mass will exerts a force unless it is massless in relative situation
A force in the opposite direction, and with the same magnitude.
-50 N