Answer:
The answer is
A. Switch
Explanation:
A switch is a device for making and breaking current in an electric circuit, it is mostly made of a non conducting material to prevent the user from being electrocuted, switches comes in range of types depending on the area of applications.
Answer:
82780.42123 m/s
14.45 days
Explanation:
m = Mass of the planet
M = Mass of the star = 
r = Radius of orbit of planet = 
v = Orbital speed
The kinetic and potential energy balance is given by

The orbital speed of the star is 82780.42123 m/s
The orbital period is given by
The orbital period is 14.45 days
1) <u>Newton</u><u> </u> <u>first</u><u> </u> <u>law</u><u> </u><u>of</u><u> </u><u>motion</u>: state“If a body is at rest it reamain at rest and if it is in a motion it continu its motion unless a net external force acting on it”
This law also called <u>law</u><u> </u><u>of</u><u> </u><u>inertia</u><u> </u><u> </u>
2)<u> </u><u>Newton</u><u> </u><u>second</u><u> </u><u>law</u><u> </u><u>of</u><u> </u><u>motion</u><u>:</u><u> </u>states that ‟acceleration to the force acting on the body and inversky proportional to the <u>mass</u><u> </u> of the body”
3)<u> </u><u>Newton's third law of motion</u><u>:</u> It is not possible to exert a force abody with out the body exerting a forces in the opposite direction.
These forces are called <u>action</u><u> </u> and <u>reaction</u><u> </u> forces
hope it's helpful ❤❤❤❤❤❤
THANK YOU.
The solution for this problem:
The distance in mega parsec is equal to recession velocity / H, where h is equal to 50 mega parsec.The explanation for this is:1 parsec = 2.E+05 AU, nearly. 50 mega parsec = 1. E+13 AU, nearly. 1 mega means E+06 (million).