Answer:
Explanation:
Given that,
Mass of the Moon, 
Mass of the person, m = 66 kg
The radius of Moon, 
We need to find the force between the person and the Moon. The formula for the gravitational force is given by :
So, the required force is 
.
Answer: opening of the nicotinic acetylcholine receptor channels.
Explanation:
Neuromuscular junction is a special junction formed between a motor neurone and a muscle fibre. The junction is fortified with nerves and receptors that helps in the transmission of signals from the motor neurone to the muscle fibre in order to bring about the desired voluntary movements through muscular contraction.
Nicotinic acetylcholine receptor are activated through the binding of acetylcholine at the neuromuscular junction. This action leads to influx of sodium ions to accomplish endplate potential.
Uniform circular motion is the motion in which an object covers equal distance in equal interval of time in a circular path and in non uniform motion object covers equal distance in unequal interval of time in a circular path
The common name is valve cover, so the correct answer is A.
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