Answer:
The coefficient of thermal expansion of material B is more than A
Explanation:
As we know that when we apply heat to a material it expands. The amount of expansion depends on the nature of the material. The amount of expansion depends on the coefficient of thermal expansion of the material.
If a material has high value of thermal expansion coefficient then it expands more.
here material A expands less and material B expands more because the pin which is made by material A becomes loosen, so the coefficient of thermal expansion of B is more than the coefficient of thermal expansion of A
<span>The life forms of the biosphere are located within Earth's surface.</span>
Answer:
<h2>
The magnitude of the magnetic is 0.145 T</h2>
Explanation:
Given :
Speed of proton ![v = 3.2 \times 10^{6}\frac{m}{s}](https://tex.z-dn.net/?f=v%20%3D%203.2%20%5Ctimes%2010%5E%7B6%7D%5Cfrac%7Bm%7D%7Bs%7D)
Mass of proton
Kg
The force on the proton in magnetic field is given by,
![F = qvB \sin \theta](https://tex.z-dn.net/?f=F%20%3D%20qvB%20%5Csin%20%5Ctheta)
But
(∵ Force is perpendicular to the velocity so
)
![F = qvB](https://tex.z-dn.net/?f=F%20%3D%20qvB)
When particle enter in magnetic field at the angle of 90° so particle moves in circle
So force is given by,
![F = \frac{mv^{2} }{r}](https://tex.z-dn.net/?f=F%20%3D%20%5Cfrac%7Bmv%5E%7B2%7D%20%7D%7Br%7D)
Where
radius but in our case 0.23 m,
C
By comparing above two equation,
![B = \frac{mv}{qr}](https://tex.z-dn.net/?f=B%20%3D%20%5Cfrac%7Bmv%7D%7Bqr%7D)
![B = \frac{1.67 \times 10^{-27} \times 3.2 \times 10^{6} }{1.6 \times 10^{-19} \times 0.23 }](https://tex.z-dn.net/?f=B%20%3D%20%5Cfrac%7B1.67%20%5Ctimes%2010%5E%7B-27%7D%20%5Ctimes%203.2%20%5Ctimes%2010%5E%7B6%7D%20%20%7D%7B1.6%20%5Ctimes%2010%5E%7B-19%7D%20%5Ctimes%200.23%20%7D)
T