2 years ago

V=d/t

Physics

2 answers:

Sonbull [250]2 years ago

7 0

ANSWER :

v = d/t

v = 140/12.5

v = 11,2 m/s

EXPLAINATION :

V as Velocity (m/s)

D as distance (m)

t as time (s)

Inessa [10]2 years ago

3 0

Answer:

The answer is 11.2 m/s

Explanation:

v=d/t

v=140/12.5

v=11.2m/s

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In the first-order spectrum, maxima for two different wavelengths are separated on the screen by 3.40 mm . what is the differenc

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The solution would be like this for this specific problem:

Given:

diffraction grating slits = 900 slits per centimeter

interference pattern that is observed on a screen from the grating = 2.38m

maxima for two different wavelengths = 3.40mm

slit separation .. d = 1/900cm = 1.11^-3cm = 1.111^-5 m 

Whenas n = 1, maxima (grating equation) sinθ = λ/d
Grant distance of each maxima from centre = y ..
As sinθ ≈ y/D y/D = λ/d λ = yd / D 

∆λ = (λ2 - λ1) = y2.d/D - y1.d/D
∆λ = (d/D) [y2 -y1]

∆λ = 1.111^-5m x [3.40^-3m] / 2.38m .. .. ►∆λ = 1.587^-8 m