Answer:
time = 8.3333 minutes.
Explanation:
distance between earth and sun = 1.5 * 
speed of light = 3* 
convert the distance unit from km to m so we can have uniform units.
distance between earth and sun = 1.5 *
m
distance between earth and sun = 1.5 *
m
speed = distance /time
time = distance / speed
time = 

time =500 sec
time = 500/60 minutes
time = 8.3333 minutes.
Answer:
The kinetic energy of the particle as it moves through point B is 7.9 J.
Explanation:
The kinetic energy of the particle is:
<u>Where</u>:
K: is the kinetic energy
: is the potential energy
q: is the particle's charge = 0.8 mC
ΔV: is the electric potential = 1.5 kV
Now, the kinetic energy of the particle as it moves through point B is:


Therefore, the kinetic energy of the particle as it moves through point B is 7.9 J.
I hope it helps you!
a) For the motion of car with uniform velocity we have ,
, where s is the displacement, u is the initial velocity, t is the time taken a is the acceleration.
In this case s = 520 m, t = 223 seconds, a =0 
Substituting

The constant velocity of car a = 2.33 m/s
b) We have 
s = 520 m, t = 223 seconds, u =0 m/s
Substituting

Now we have v = u+at, where v is the final velocity
Substituting
v = 0+0.0209*223 = 4.66 m/s
So final velocity of car b = 4.66 m/s
c) Acceleration = 0.0209 
<span>Kinetic energy increases and potential energy decreases.
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