Answer:
1.69 * 10^(-7) C
Explanation:
We can find this by using the formula for electric potential while making charge the subject of formula:
V = kQ/r
=> Q = (V*r)/k
Where k = Coulumbs constant
V = electric potential
Q = charge
r = distance between doorknob and charged body
From the question,
V = 6 kV = 6000 V
r = (25 + 0.3) cm = 25.3 cm = 253m
Note: Since we assume that the body is a sphere and we know that the charge in a sphere is concentrated in it's center, we add the radius of the sphere to the length of the spark (which tells us the distance between the doorknob and body) to get the distance between the doorknob and the charge.
Hence:
Q = (6000 * 0.253)/(9 * 10^9)
Q = 1.69 * 10^(-7) C
Although the semi truck certainly has a larger mass, it is not in motion and therefore does not have any momentum. The bicycle however has both mass and velocity and therefore has the larger momentum of the pair.
Answer:
The five steps for determining density can be found in simple form as follows, measure the mass of the container, measure the volume of the liquid(s), measure the combined mass of the liquid and the container, and then determine the mass of the liquid alone and divide the mass by the volume of it.
Answer:
Explanation:
The answer:
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