Answer:
Yes, it is very helpful.
Explanation:
It's helpful since in a cell, plant or animal, there are a lot of different things. It's hard to memorize everything and know what they look like. Using a model can help you memorize everything better and even understand it better. If someone asked me where or what something was in a cell I think I would be able to recognize it better.
I hope this helps!
Answer:
During the segments B - C and D - E, the car stopped since the y axis is the distance and the distance stayed the same in between those segments.
For a simpler answer, the flat horizontal lines on the graph are the times when the car was stopped.
Answer:
A. ls sensitive to heat
this is correct answer
I hope it's helpful for you.......
Answer:19.32 m/s
Explanation:
Given
initial speed of car(u)=4.92 m/s
acceleration(a)=![3.2 m/s^2](https://tex.z-dn.net/?f=3.2%20m%2Fs%5E2)
Speed of car after 4.5 s
using equation of motion
v=u+at
![v=4.92+3.2\times 4.5=4.92+14.4](https://tex.z-dn.net/?f=v%3D4.92%2B3.2%5Ctimes%204.5%3D4.92%2B14.4)
v=19.32 m/s
Displacement of the car after 4.5 s
![v^2-u^2=2as](https://tex.z-dn.net/?f=v%5E2-u%5E2%3D2as)
![19.32^2-4.92^2=2\times 3.2\times s](https://tex.z-dn.net/?f=19.32%5E2-4.92%5E2%3D2%5Ctimes%203.2%5Ctimes%20s)
![349.05=2\times 3.2\times s](https://tex.z-dn.net/?f=349.05%3D2%5Ctimes%203.2%5Ctimes%20s)
s=54.54 m
Answer:
Speed of the alpha particle is
Explanation:
We have given charge on alpha particle ![q=3.2\times 10^{-19}C](https://tex.z-dn.net/?f=q%3D3.2%5Ctimes%2010%5E%7B-19%7DC)
Mass of the alpha particle ![m=6.68\times 10^{-27}kg](https://tex.z-dn.net/?f=m%3D6.68%5Ctimes%2010%5E%7B-27%7Dkg)
Potential difference ![V=-3.45\times 10^{-3}volt](https://tex.z-dn.net/?f=V%3D-3.45%5Ctimes%2010%5E%7B-3%7Dvolt)
We have to find the speed of the alpha particle
From energy conservation we know that
![\frac{1}{2}mv^2=qV](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7Dmv%5E2%3DqV)
![\frac{1}{2}\times 6.68\times 10^{-27}\times v^2=3.2\times 10^{-19}\times 3.45\times 10^{-3}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7D%5Ctimes%206.68%5Ctimes%2010%5E%7B-27%7D%5Ctimes%20v%5E2%3D3.2%5Ctimes%2010%5E%7B-19%7D%5Ctimes%203.45%5Ctimes%2010%5E%7B-3%7D)
![v=1.8180\times 10^3m/sec](https://tex.z-dn.net/?f=v%3D1.8180%5Ctimes%2010%5E3m%2Fsec)