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2 years ago

9

A commercial diffraction grating has 300 lines per mm. When a student shines a 470 nm laser through this grating, how many brigh

t spots could be seen on a screen behind the grating

1 answer:

Ostrovityanka [42]2 years ago

7 0

Answer:

Evaluate the following numerical expressions.

6 + 3 • 4 =

18

(6 + 3) ÷ (4 – 5) =

Explanation:

Evaluate the following numerical expressions.

6 + 3 • 4 =

18

(6 + 3) ÷ (4 – 5) =

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2 years ago

Read 2 more answers

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Nina [5.8K]

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2 years ago

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2 years ago

Need help with this plz

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2 years ago

A solid conducting sphere with radius R carries a positive total charge Q. The sphere is surrounded by an insulating shell with

Illusion [34]

Answer:

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$\rho=\frac{Q_{shell}}{\frac{4}{3}\pi((2R)^3-R^3)}=\frac{-3Q}{28\piR^3}$

B)

The electric field is $E=\frac{1}{4\pi\epsilon_0}\frac{Qr}{R^3}$

For 0 <r<R the electric field is zero, because the electric field inside the conductor is zero.

C)

For R <r <2R According to gauss law

$E(4\pi r^2)=\frac{Q}{\epsilon_0}+\frac{4\pi\rho}{3\epsilon_0}(r^3-R^3)$

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D)

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E)

For r>2R

Charge enclosed is zero, so electric field is zero

8 0

2 years ago