P=IV, where P is power, I is resistance, and V is voltage. Plug in and solve:
P=400(20)
P=8000W
Hope this helps!!
<span>Make an Observation. Scientists are naturally curious about the world. ... Form a Question. After making an interesting observation, a scientific mind itches to find out more about it. ... Form a Hypothesis. ... Conduct an Experiment. ... <span>Analyze the Data and Draw a Conclusion.</span></span>
(a) 
The change in energy of the transferred charge is given by:

where
q is the charge transferred
is the potential difference between the ground and the clouds
Here we have


So the change in energy is

(b) 7921 m/s
If the energy released is used to accelerate the car from rest, than its final kinetic energy would be

where
m = 950 kg is the mass of the car
v is the final speed of the car
Here the energy given to the car is

Therefore by re-arranging the equation, we find the final speed of the car:

Answer:
Explanation:
Average speed= Total distance/ Total time
Initial reading= 2200
final reading= 3800
total distance= Final reading -initial reading = 3800-2200 = 1600 km
total time= 20 hrs
Average speed= 1600/20
= 80 km/hr
CONVERTING km/hr TO m/s
To convert km/hr to m/s just multiply
Recall that,
1000m = 1 km
60 secs = 1 min
60 mins = 1 hr
( 80 × 1000 ) meters / ( 60×60 ) secs
80000m / 3600s
= 22.22m/s