Answer: A concave mirror focuses rays of light
Explanation:
- Unlike charges attract .
- like charges repel .
There are two types of charges
Namely :
On loosing electrons , a neutral body acquires positive charge .
On gaining electrons , a neutral body acquires negative charge .
The amount of charge present in a body , either positive or negative , is expressed in terms of an integral number of charge of an electron , which is considered the elementary entity of an electric charge .
Answer:
1) Atmosphere
Explanation: because if you think about it the only real explaination is atmosphere.
Answer:
75% is the efficency of this maxhine
