A. cgi... they're usually filmed with a greenscreen and is keyed out in editing. known as chroma keying
Answer:
Option D - 0.2 s
Explanation:
We are given;
Initial velocity; u = 7 m/s
Height of table; h = 1.8m
Now,since we want to find the time the car spent in the air, we will simply use one of Newton's equation of motion.
Thus;
h = ut + ½gt²
Plugging in the relevant values, we have;
1.8 = 7t + ½(9.8)t²
4.9t² + 7t - 1.8 = 0
Using quadratic formula to find the roots of the equation gives us;
t = -1.65 or 0.22
We can't have negative t value, thus we will pick the positive one.
So, t = 0.22 s
This is approximately 0.2 s
Answer:
option D) -3m
Explanation:
if 6m is diplaced by -3m then it would be -3+6=3m
feel free to ask if you are confused
<span> answer>>>>electric force <<<<by the way i don't like physics but i answer this for you ^-^</span>
<span>This is because centripetal force is just the net force of a circular motion. There are no attractive or repulsive forces here. This is not the case here. </span>
<span>The gravitational force is a force reliant on mass and attraction of the masses. There are attractive forces here, but not really repulsive forces. </span>
<span>The electric force is the only one that would make sense because it has to do with a relationship between charges and includes both repulsive and attractive forces.</span>
Answer:
The workdone is
Explanation:
From the question we are told that
The potential difference is ![V = 107 mV = 107 *10^{-3} \ V](https://tex.z-dn.net/?f=V%20%20%3D%20%20107%20mV%20%3D%20%20107%20%2A10%5E%7B-3%7D%20%5C%20%20V)
Generally the charge on
is ![Q_{Na^{+}} = 1.60 *10^{-19 } \ C](https://tex.z-dn.net/?f=Q_%7BNa%5E%7B%2B%7D%7D%20%3D%201.60%20%2A10%5E%7B-19%20%7D%20%5C%20%20C)
Generally the workdone is mathematically represented as
![W = Q_{Na^{+}}V](https://tex.z-dn.net/?f=W%20%3D%20%20Q_%7BNa%5E%7B%2B%7D%7DV)
=>
=>