Calculate the force experienced by a positive test charge of 8.1 × 10-9 coulombs if the electric field strength is 9.4 × 107 newtons/coulomb.
a.
1.5 × 10-1 newtons
b.
9.4 × 10-7 newtons
c.
7.6 × 10-1 newtons
d.
8.7 × 10-1 newtons

C.  

7.6 × 10-1 newtons

Explanation:

The electrostatic force experienced by a charge is given by

where

q is the magnitude of the charge

E is the magnitude of the electric field

In this problem, we have

is the charge

is the electric field

Substituting into the formula, we find

they are non-matter

explanation:

they are non-matter. basically, any type of energy or any abstract concept is an example of something that does not matter. other examples include dreams, magnetism, radio, and hate

prolly a beacuse the momentuem the car has increases while going down hill