Answer:
<em>2.753*10^-11N</em>
Explanation:
According to Newton's law of gravitation, the force between the masses is expressed as;
F = GMm/d²
M and m are the distances
d is the distance between the masses
Given
M = 3.71 x 10 kg
m = 1.88 x 10^4 kg
d = 1300m
G = 6.67 x 10-11 Nm²/kg
Substitute into the formula
F = 6.67 x 10-11* (3.71 x 10)*(1.88 x 10^4)/1300²
F = 46.52*10^(-6)/1.69 * 10^6
F = 27.53 * 10^{-6-6}
F = 27.53*10^{-12}
F = 2.753*10^-11
<em>Hence the gravitational force between the asteroid is 2.753*10^-11N</em>
<em></em>
Answer : D) Circuit A
This circuit is the only circuit where it is not complete, having and open spot towards the bottom of it, making it and open circuit.
Answer:
The Height is H = 70.02 m
Explanation:
We are given that the
Initial length is = 
= 
from what we are told in the question the circumference of the circle is = 
This means that the Radius would be :
Let C denote the circumference
So
=> 
We are told that 1-meter bar of steel that increases its temperature by 1 degree C will expand 
meters
Hence
The final length would be
Where T is the change in temperature 
is the Coefficient of linear expansion for steel
let 
denote the final length
So
![L_{final} =40000*10^{6} *[1+ 11*10^{-6}]](https://tex.z-dn.net/?f=L_%7Bfinal%7D%20%3D40000%2A10%5E%7B6%7D%20%2A%5B1%2B%2011%2A10%5E%7B-6%7D%5D)
Now the Height is mathematically represented as
F=mass x acceleration = ma= 0.8*20 = 16N
