Answer:
Explanation:
Given
mass of archer ![m=0.3\ kg](https://tex.z-dn.net/?f=m%3D0.3%5C%20kg)
Average force ![F_{avg}=201\ N](https://tex.z-dn.net/?f=F_%7Bavg%7D%3D201%5C%20N)
extension in arrow ![x=1.3\ m](https://tex.z-dn.net/?f=x%3D1.3%5C%20m)
Work done to stretch the bow with arrow
![W=F\cdot x](https://tex.z-dn.net/?f=W%3DF%5Ccdot%20x)
![W=201\times 1.3=261.3\ m](https://tex.z-dn.net/?f=W%3D201%5Ctimes%201.3%3D261.3%5C%20m)
This work done is converted into kinetic Energy of arrow
![W=\frac{1}{2}mv^2](https://tex.z-dn.net/?f=W%3D%5Cfrac%7B1%7D%7B2%7Dmv%5E2)
where v= velocity of arrow
![261.3=\frac{1}{2}\times 0.3\times v^2](https://tex.z-dn.net/?f=261.3%3D%5Cfrac%7B1%7D%7B2%7D%5Ctimes%200.3%5Ctimes%20v%5E2)
![v=\sqrt{1742}](https://tex.z-dn.net/?f=v%3D%5Csqrt%7B1742%7D)
![v=41.73\ m/s](https://tex.z-dn.net/?f=v%3D41.73%5C%20m%2Fs)
(b)if arrow is thrown vertically upward then this energy is converted to Potential energy
![W=mgh](https://tex.z-dn.net/?f=W%3Dmgh)
![261.3=0.3\times 9.8\times h](https://tex.z-dn.net/?f=261.3%3D0.3%5Ctimes%209.8%5Ctimes%20h)
![h=\frac{261.3}{0.3\times 9.8}](https://tex.z-dn.net/?f=h%3D%5Cfrac%7B261.3%7D%7B0.3%5Ctimes%209.8%7D)
![h=88.87\ m](https://tex.z-dn.net/?f=h%3D88.87%5C%20m)
Answer:
A ball is thrown straight up with a speed of 30
m/s. What is the maximum height reached by
the ball?
That is the mst best eway to find its solution.
37.4/2.2*10^3 = 0.017 gm/liter or 1.7*10^-2
so we conclude that option b is sorrect
Answer:
The energy level is 5.
Explanation:
Given that,
n = 3
l = 2
We know that,
l shows the number of sub-shells and define the number of angular nodes.
n shows the number of electron shell.
is a quantum number. It is define the number of energy level in a sub-shells .
is define the spin of the electron.
So, The quantum number is
![m_{l}=-2,-1,0,1,2](https://tex.z-dn.net/?f=m_%7Bl%7D%3D-2%2C-1%2C0%2C1%2C2)
is
and
for every energy level.
The energy level is 5.
Hence, The energy level is 5.
Answer:
due to the magnetic field
Explanation:
magnetic field is the same in the vacuum