Answer:
<em>Distance= 187.5 m
</em>
<em>Displacement= 12.5 m</em>
Explanation:
<u>Distance And Displacement
</u>
The question doesn't say what the length of the pool is, so we are assuming two things:
The pool is 50 m long.
One lap is one pool length, i.e. 50 m
Grant swims 3 3/4 laps. If we add up the total distance is 50*(3.75)=187.5 m
Grant starts in one end, swims one pool, then swims back one pool. Right now, he has zero displacement
Then he swims another pool and returns only 3/4 of the lap, which means he still needed 1/4*50 m=12.5 to arrive at his starting point. The final displacement is the subtraction of the final position minus the initial position, i.e. 12.5 m - 0 m= 12.5 m
Answer:
Distance= 187.5 m
Displacement= 12.5 m
Explanation:
The misunderstanding here is that the thing that turns on the light bulb is not the same electrons near the light switch. So, the electrons near the switch is not moving all the way across the circuit instantly. The electrons are distributed across the wire. When the light switch is turned on, the circuit is connected and there is a potential difference between the bulb and the source. This potential difference creates an electric field, and free electrons move under the influence of this electric field according to Coulomb's Law. When they start to move the electrons closest to the bulb causes the bulb to glow.
So, the important factor here is not the drift velocity of the electrons but the number of electrons and the strength of the electric field.
its 55 :) have a great day queen/king/whatever gender you are
