Answer:
Drift velocity of conduction electrons in Gold = 8.73 × 10⁻⁶ m/s = 8.73 μm/s
Explanation:
Drift velocity, v, is given by
v = I/(nAq)
where v = drift velocity
I = current in the wire
n = number of electrons per cubic metre for the wire
A = Cross sectional Area of the wire
q = charge on one electron
I = 0.373 A
A = πD²/4 = π(0.0024)²/4 = 4.52 × 10⁻⁶ m²
q = 1.602 × 10⁻¹⁹ C
n = 5.90 × 10²⁸ electrons/m³
v = 0.373/(5.90 × 10²⁸ × 4.52 × 10⁻⁶ × 1.602 × 10⁻¹⁹) = 8.73 × 10⁻⁶ m/s
Where are the statements? You forgot to attach them lol
Answer:
The answer is cooperation
Explanation:
Cooperation means too work together to the same end
Hope this helped :)
Explanation:
When there is no change in chemical composition of a substance then it is known as physical change.
When we say that mass is conserved during a physical change then it means that total mass of the substance or object will remain the same from beginning till the end.
For example, a metal box of mass 20 grams is beaten with hammer. Its shape will change which is a physical change and after beaten with the hammer its mass still remains 20 grams.
Answer:
A
![N = 1340.86 \ slits / cm](https://tex.z-dn.net/?f=N%20%20%3D%201340.86%20%5C%20slits%20%20%2F%20cm)
B
![\theta = 15.7^o](https://tex.z-dn.net/?f=%5Ctheta%20%20%3D%2015.7%5Eo)
Explanation:
From the question we are told that
The wavelength is
The angle of first bright fringe is
The order of the fringe considered is n =1
Generally the condition for constructive interference is
=> ![d = \frac{1 * 650 *10^{-9 }}{ sin(5)}](https://tex.z-dn.net/?f=d%20%3D%20%20%5Cfrac%7B1%20%2A%20%20650%20%2A10%5E%7B-9%20%7D%7D%7B%20sin%285%29%7D)
=> ![d = 7.458 *10^{-6} \ m](https://tex.z-dn.net/?f=d%20%3D%207.458%20%2A10%5E%7B-6%7D%20%5C%20%20m)
Converting to cm
![d = 7.458 *10^{-6} \ m = 7.458 *10^{-6} * 100 = 0.0007458 \ cm](https://tex.z-dn.net/?f=d%20%3D%207.458%20%2A10%5E%7B-6%7D%20%5C%20%20m%20%3D%207.458%20%2A10%5E%7B-6%7D%20%20%2A%20100%20%3D%20%200.0007458%20%5C%20%20cm)
Generally the number of grating pre centimeter is mathematically represented as
![N = \frac{1}{d}](https://tex.z-dn.net/?f=N%20%20%3D%20%20%5Cfrac%7B1%7D%7Bd%7D)
=> ![N = \frac{1}{0.0007458}](https://tex.z-dn.net/?f=N%20%20%3D%20%20%5Cfrac%7B1%7D%7B0.0007458%7D)
=> ![N = 1340.86 \ slits / cm](https://tex.z-dn.net/?f=N%20%20%3D%201340.86%20%5C%20slits%20%20%2F%20cm)
Considering question B
From the question we are told that
The first wavelength is
The second wavelength is
The order of the fringe is ![n = 2](https://tex.z-dn.net/?f=n%20%20%3D%20%202)
The grating is ![N = 5000 \ slits / cm](https://tex.z-dn.net/?f=N%20%3D%20%205000%20%5C%20%20slits%20%2F%20cm)
Generally the slit width is mathematically represented as
![d = \frac{1}{N }](https://tex.z-dn.net/?f=d%20%3D%20%20%5Cfrac%7B1%7D%7BN%20%20%7D)
=> ![d = \frac{1}{ 5000 }](https://tex.z-dn.net/?f=d%20%3D%20%20%5Cfrac%7B1%7D%7B%205000%20%20%7D)
=> ![d = 0.0002 \ c m = 2.0 *10^{-6} \ m](https://tex.z-dn.net/?f=d%20%3D%20%20%200.0002%20%5C%20%20c%20m%20%20%3D%20%202.0%20%2A10%5E%7B-6%7D%20%5C%20m)
Generally the condition for constructive interference for the first ray is mathematically represented as
=>
=> ![\theta_1 = sin^{-1} [\frac{ 2 * 650 *10^{-9} }{ 2*10^{-6}}]](https://tex.z-dn.net/?f=%5Ctheta_1%20%3D%20sin%5E%7B-1%7D%20%5B%5Cfrac%7B%202%20%2A%20%20%20650%20%2A10%5E%7B-9%7D%20%7D%7B%202%2A10%5E%7B-6%7D%7D%5D)
=> ![\theta_1 = 40.5 ^o](https://tex.z-dn.net/?f=%5Ctheta_1%20%3D%2040.5%20%5Eo)
Generally the condition for constructive interference for the second ray is mathematically represented as
=>
=> ![\theta_2 = sin^{-1} [\frac{ 2 * 420 *10^{-9} }{ 2*10^{-6}}]](https://tex.z-dn.net/?f=%5Ctheta_2%20%3D%20sin%5E%7B-1%7D%20%5B%5Cfrac%7B%202%20%2A%20%20%20420%20%2A10%5E%7B-9%7D%20%7D%7B%202%2A10%5E%7B-6%7D%7D%5D)
=> ![\theta_2 = 24.8 ^o](https://tex.z-dn.net/?f=%5Ctheta_2%20%3D%2024.8%20%20%5Eo)
Generally the angular separation is mathematically represented as
![\theta = \theta_1 - \theta_1](https://tex.z-dn.net/?f=%5Ctheta%20%20%3D%20%20%5Ctheta_1%20-%20%5Ctheta_1)
=> ![\theta = 42.5^o - 24.8^o](https://tex.z-dn.net/?f=%5Ctheta%20%20%3D%2042.5%5Eo%20-%20%2024.8%5Eo)
=> ![\theta = 15.7^o](https://tex.z-dn.net/?f=%5Ctheta%20%20%3D%2015.7%5Eo)