Answer:
Explanation:
Given
radius 
Charge on surface 
Point Charge inside sphere 
Electric Field at 
Treating Surface charge as Point charge and applying Gauss law
where A=surface area up to distance r
B. We can see only one side of the Moon from Earth.
( we only see one side of the moon because the moon rotates around the Earth)
Answer:
Option (B)
Explanation:
In terms of communication, a receiver is usually referred to as a person who listens, reads as well as observes. In simple words, a receiver is an individual or it can be a group of individuals, to whom any type of message is being diverted. The other name for the receiver is 'audience'.
In the given condition, Warren is attending a seminar in which he is listening to the speaker, as a part of the audience. So, it can be concluded that Warren is a receiver who is receiving information or hearing the speaker.
Thus, the correct answer is option (B).
Answer:
may be upside down alphabet :"T"
Explanation:
