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laila [671]
3 years ago
7

The height of a door knob above the floor is approximately?

Physics
1 answer:
blondinia [14]3 years ago
3 0
There is a standard (you would not believe) that knobs are on the level of 1m 

i would say that in order to apply less force to open a door you need to position knob in the middle of the door. 

door itself would be probably about 2m (average person is 1.8m)

so it's half of 2m -> 1m

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2 years ago
An interference pattern is produced by light with a wavelength 580 nm from a distant source incident on two identical parallel s
irakobra [83]

Answer:

Explanation:

1 )

Here

wave length used that is λ = 580 nm

=580 x 10⁻⁹

distance between slit d = .46 mm

= .46 x 10⁻³

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= λ / d radian

= 580 x 10⁻⁹ / .46 x 10⁻³

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2 )

Angular position of second order interference maxima

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3 )

For intensity distribution the formula is

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For angular position of θ1

δ = .126 x 10⁻² radian

I = I₀ cos².126x 10⁻²/2

= I₀ X .998

For angular position of θ2

I = I₀ cos².126x2x 10⁻²/2

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zepelin [54]

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