The current is defined as the amount of charge Q that passes through a given point of a wire in a time
![\Delta t](https://tex.z-dn.net/?f=%5CDelta%20t)
:
![I= \frac{Q}{\Delta t}](https://tex.z-dn.net/?f=I%3D%20%5Cfrac%7BQ%7D%7B%5CDelta%20t%7D%20)
Since I=500 A and the time interval is
![\Delta t=4.0 min=240 s](https://tex.z-dn.net/?f=%5CDelta%20t%3D4.0%20min%3D240%20s)
the charge is
![Q=I \Delta t=(500 A)(240 s)=1.2 \cdot 10^5 C](https://tex.z-dn.net/?f=Q%3DI%20%5CDelta%20t%3D%28500%20A%29%28240%20s%29%3D1.2%20%5Ccdot%2010%5E5%20C)
One electron has a charge of
![q=1.6 \cdot 10^{-19}C](https://tex.z-dn.net/?f=q%3D1.6%20%5Ccdot%2010%5E%7B-19%7DC)
, therefore the number of electrons that pass a point in the wire during 4 minutes is
![N= \frac{Q}{q}= \frac{1.2 \cdot 10^5 C}{1.6 \cdot 10^{-19}C}=7.5 \cdot 10^{23}](https://tex.z-dn.net/?f=N%3D%20%5Cfrac%7BQ%7D%7Bq%7D%3D%20%5Cfrac%7B1.2%20%5Ccdot%2010%5E5%20C%7D%7B1.6%20%5Ccdot%2010%5E%7B-19%7DC%7D%3D7.5%20%5Ccdot%2010%5E%7B23%7D%20%20)
electrons
A pendulum is an object hung from a fixed point that swings back and forth under the action of gravity. In the example of the playground swing, the swing is supported by chains that are attached to fixed points at the top of the swing set. When the swing is raised and released, it will move freely back and forth due to the force of gravity on it. The swing continues moving back and forth without any extra outside help until friction (between the air and the swing and between the chains and the attachment points) slows it down and eventually stops it.
<span>A researcher claiming that females were more empathetic than males would test that hypothesis by using inferential statistics.</span>
I'll put my answer in the comments but, part of the question is cut off do you mind putting a more readable and not sideways picture?
We are given –
- Mass of boiling ball is, m = 4 kg
- Speed is, v = 3 m/s
- Momentum, P =?
As we know –
↠Momentum = Mass × Speed(Velocity)
↠Momentum = 4 × 3 kgm/s
↠Momentum = 12 kgm/s
- Henceforth,Momentum will be 12 kgm/s.