The force of gravity on earth is towards the center of it
In the downward direction
Answer:
Forces affect how objects move. They may cause motion; they may also slow, stop, or change the direction of motion of an object that is already moving. Since force cause changes in the speed or direction of an object, we can say that forces cause changes in velocity. Remember that acceleration is a change in velocity.
Explanation:
Answer:
yes, the potential difference across the terminals of the battery can be equal to its emf.
Explanation:
when the current in the battery is zero, meaning the current though, and hence the potential drop across the internal resistance is zero. This only happens when there is no load placed on the battery.
Answer:
Explanation:
As is showed at the figure annexed, we can solve this problem finding the relation between the girl displacement and the shadow displacement.
Relation the triangles (see figure annexed):
We derive in order to find the speed of the shadow, because:
dx/dt: shadow's speed
dy/dt: girl's speed
