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postnew [5]
3 years ago
12

Could anyone help with this question I do

Physics
2 answers:
ra1l [238]3 years ago
8 0
<span>which of those can we not get back once it has been used, the answer is oil or petroleum</span>
dedylja [7]3 years ago
7 0
That is a very good question and i think i know the answer but am not sure. C sunlight because once you use sunlight you cant use it again and again
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If the distance between slits on a diffraction grating is 0.50 mm and one of the angles of diffraction is 0.25°, how large is th
Trava [24]

Answer:

-  path differnce = 2.18*10^-6

-  1538 lines

Explanation:

- The path difference for the waves that produce the pattern of diffraction, is given by the following formula:

path\ difference\ = dsin\theta           (1)

d: separation between slits = 0.50mm = 0.50*10^-3 m

θ: angle of a diffraction = 0.25°

Then, the path difference is:

path\ difference\ =(0.50*10^{-3}m)sin(0.25\°)=2.18*10^{-6}m

- The maximum number of bright lines are calculated by using the following formula:

m\lambda = dsin\theta           (2)

m: order of the bright

λ: wavelength = 650nm

The maximum bright is calculated for an angle of 90°:

m=\frac{(0.50*10^{-3}m)sin90\°}{650*10^{-9}m} \approx 769

The maxium number of bright lines are twice the previous result, that is, 1538 lines

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3 years ago
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What is the magnitude b of the magnetic field at the location of the charge due to the current-carrying wire?
elena-14-01-66 [18.8K]

Answer:

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Explanation:

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What is the velocity of a car if it travels east 340 meters in 10 seconds? V = d/t
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i know cause i took the test

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If displacement is negative,is velocity negative too?
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Answer:

An object which moves in the negative direction has a negative velocity. If the object is speeding up then its acceleration vector is directed in the same direction as its motion (in this case, a negative acceleration).

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