Answer:
20 to 30
Explanation:
20 to 30 is the correct answer
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.
A positively charged particle is a proton.
Negatively charged particles are electrons.
Particles with no charge are neutrons.
<span>As the body rises up its gravitational potential energy increases but its kinetic energy decreases.
As a body falls its gravitational potential energy decreases but it's kinetic energy increases</span>
