3 years ago

A car traveling with constant speed travels 150 km in 7200s what is the speed of the car

1 answer:

5 0

Velocity is distance/time

so 150/7200=.0208km/s

unless you have to convert it to miles or something else. but use the formula!

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A soap bubble appears red (λ = 633nm) at the point on its front surface nearest to the viewer. Assuming n = 1.35, what is the sm

alexira [117]

Answer:

The smallest film thickness is 117 nm.

Explanation:

Light interference on thin films can be constructive or destructive. Constructive interference is dependent on the film thickness and the refractive index of the medium.

For the first interference (surface nearest to viewer), the minimum thickness can be expressed as:

$2t_{min} = \frac{wavelenth}{2n}$

where n is the refractive index of the bubble film.

Therefore,

$2t_{min} = \frac{633x10^{-9} }{(2)(1.35)}$

$2t_{min} =2.344x10^{-7}$

∴ $t_{min} =\frac{2.344x10^{-7} }{2}$

$t_{min} = 1.17x10^{-7} m = 117 nm.$

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3 years ago

¿Cuál es la frecuencia de rotación en la tierra?

lina2011 [118]

Answer:

frequency is approximately 11.5 µHz, or more exactly, 11.5740740e-6 Hz

Explanation:

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3 years ago

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Katyanochek1 [597]

Drinking water is ur answer.

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If the speed of light in a medium is 2 x 10^8 m/s, the medium's index of refraction is?

steposvetlana [31]

Speed of light in the air is 3 x 10^8
so index of refractions would be speed of light divided by speed in the medium
3/2 = 1.5

Answer: n=1.5

by the way it is glass :)

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3 years ago

What do you mean by exercise

Lemur [1.5K]

Answer:

exercise mean any bodily activity that enhances or maintains physical fitness and overall health and wellness.

I hope it will help you

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