Answer:
From 0 -4 seconds the acceleration is positive. (The graph is going upwards.)
From 6-10 seconds the acceleration is negative. (The graph is going downwards.)
Answer:van der Waals forces
Explanation:van der Waals forces are weak bond that occurs between oppositely charged molecules like in the case of a magnet
12.
Because why calculating displacement you only take two points in time, in this situation being the initial position and the final position. The distance between these two points is 12 kilometers.
Answer:
the umbra and penumbra
Explanation:
The two parts of a shadow are the umbra and penumbra.
A shadow is an expression formed when light from a source is cut blocked by an opaque body.
Most shadows are made up of two parts, umbra and penumbra.
- The umbra is the darkest, and the innermost part of a shadow.
- In the penumbra, only a portion of the light source is blocked. It is more of like a partial shadow.
The umbra is directly formed by light which impinges on an opaque body and it completely cut off.
Answer:
Explanation:
The forces compare together as a result of the fact that the force exerted by that of the ball and the force exerted by that of the wall both have the same magnitude.
