Answer:
a) 4.6*10^{-5} J
b) 6133.33 J/C
c) 94358.9 C
Explanation:
(a) We have that the change in the kinetic energy equals the net work over the charge. Hence we have
where Ek is the kinetic energy, W is the work of the external force and WE is the work done by the electric field. By replacing we obtain:
(b) The potential difference is computed by using:
(c) With the work done by the electric force we can calculate the Electric field. By using the following formula we obtain:
where we have used d=6.5cm=6.5*10^-9m and q=7.5nC=7.5*10^-9C
hope this helps!!
Rainy. Most crashes/fatal collisions in adverse weather or on slick pavement
Answer:
a) F = 9.69 N
b) F = 10.88 N
c) F = 8.51 N
Explanation:
a) The kinetic frictional force when the elevator is stationary is the following:
Where:
F(k) is the kinetic frictional force
N is the normal force = mg
m: is the mass = 2.60 kg
g: is the gravity = 9.81 m/s²
μ(k) is the coefficient of kinetic friction = 0.380
b) When the elevator is accelerating upward with acceleration "a" equal to 1.20 m/s²
The normal is equal to mg plus ma because the elevator is accelerating upward
c) When the elevator is accelerating downward with a =1.20 m/s² we can find the kinetic frictional force similar to the previous case:
I hope it helps you!
The GPE or gravitational potential energy will be transfer into kinetic energy because the roller coaster have potential to go down the hill because of gravity.
It will be convert into kinetic energy
Hope this helps
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