Which of the following explains how electrical charges flow? From areas of high-potential to areas of low-potential From areas o
2 answers:
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Answer:
Part a)
Part b)
direction = downwards
Explanation:
As we know that the negative charge will experience the force due to some other charge below it
the force is given as
now we know that
now plug in all data
since this is a repulsion force so it must be a negative charge
Part b)
As per Newton's III law it will exert equal and opposite force on it
So here the force on the charge below it will be same in magnitude but opposite in direction
so here we have
direction = downwards
Answer:
6.33 km/s
Explanation:
Given that :
A spaceprobe in outer space is flying with a constant speed = 1.530 km/s.
The probe has a payload = 1363.0 kg
which carries 3486.0 kg of rocket fuel.
Exhaust speed = 3.795 km/s
How fast will the spaceprobe travel when all the rocket fuel is used up?
As we know that the rate of change of spaceprobe momentum is equal to the thrust of the rocket.
Then;
where;
= exhaust speed
Taking the integral of the above expression; we have:
= 6.33 km/s