Plate] term 3 quiz 1 physics grade 9

Physics

1 answer:

fomenos3 years ago

4 0

Answer:

go to this link

lldjcjfshsmartclass/2953

I think it will help you

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Which statement accurately describes the illustration?

kvv77 [185]

The answer is B. I hope this helps! :)

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Find the three longest wavelengths (call them λ1, λ2, and λ3) that "fit" on the string, that is, those that satisfy the boundary

zepelin [54]

If you have a string that is fixed on both ends the amplitude of the oscillation must be zero at the beginning and the end of the string. Take a look at the pictures I have attached. It is clear that our fundamental harmonic will have the wavelength of:
$\lambda_1=\frac{L}{2}$
All the higher harmonics are just multiples of the fundamental:
$\lambda_n=n\lambda_1\\ \lambda_n=n\frac{L}{2}$
Three longest wavelengths are:
$n=3; \lambda_3=\frac{3L}{2}\\
n=2; \lambda_2=L\\
n=1; \lambda_=\frac{L}{2}\\
$

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4 years ago

The fundamental resolution of a lens or telescope is determined by:

Sliva [168]

Answer:

The numerical aperture of the lens.

Explanation:

A numerical aperture is a dimensionless number that is the range of angles that the system can accept / emit light.

Have a nice day!

I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

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0. What is centripetal accleration?Derive relation for it

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Centripetal acceleration is defined as the property of the motion of an object, traversing a circular path. Any object that is moving in a circle and has an acceleration vector pointed towards the center of that circle is known as Centripetal acceleration. ... Centripetal means towards the center.

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An automatic switch that opens when the current reaches a set value is called:

marishachu [46]

I believe the correct answer would be letter c) circuit breaker

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