Light of wavelength 645 nm is incident on a double slit. the angle between the central bright fringe and the second dark fringe is 4.90°. determine the separation d of the slits.

Slit separation,

Explanation:

It is given that,

Wavelength of light,

The angle between the central bright fringe and the second dark fringe,

In case of double slits, the condition for dark fringe is given by :

n = 2

So, the slit separation is . Hence, this is the required solution.

acceleration = (change in speed) / (time for the change)

change in speed = (20-120)= -100 m/s.

1.5 min = 90 sec

acceleration = -100/90 = -1.11 m/s^2.

we don't care about the 150kg or the 2,500 meters. they don't make any difference.

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d. platinum would have the greatest temperature increase because it has the lowest specific heat.