Answer:
3.91 N/C
Explanation:
u = 0, s = 5.50 m, t = 4 us = 4 x 10^-6 s
Let a be the acceleration.
Use second equation of motion
s = u t + 1/2 a t^2
5.5 = 0 + 1/2 a (4 x 10^-6)^2
a = 6.875 x 10^11 m/s^2
F = m a
The electrostatic force, Fe = q E
Where E be the strength of electric field.
So, q E = m a
E = m a / q
E = (9.1 x 10^-31 x 6.875 x 10^11) / ( 1.6 x 10^-19)
E = 3.91 N/C
I believe it would be B and C because kinetic and potential energy both go under mechanical energy, electrical and thermal energy are its own kind of energy
The trip time taken by the box is 1.5 sec.
Explanation:
Given:
distance(d) = 30 m
Velocity(v) = 20 m/s
By using formula:
Velocity =
or, 20 =
or, time(t) =
∴ time (t) = 1.5 sec
Hence the the block took 1.5 sec to slide 30 m.
Answer:
C
Explanation:
elements are classified as covalent, ionic, metallic