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Mila [183]
3 years ago
5

A wave has the wavelength equal to 396 nm. what must be the frequency of this wave

Physics
1 answer:
Anvisha [2.4K]3 years ago
7 0
This assumes that the wave has velocity c (is light).

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The answer is actually a,b, and d
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6000 J

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3 years ago
A 6 N and a 10 N force act on an object. The moment arm of the 6 N force is 0.2 m. If the 10 N force produces five times the tor
Levart [38]

Answer:

The moment arm is 0.6 m

Explanation:

Given that,

First force F_{1}=6\ N

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Using formula of torque

\tau=Force\times lever\ arm

So, Here,

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We know that,

The torque is the product of the force and distance.

Put the value of torque in the equation

F_{2}\times d_{2}=5\times F_{1}\times r_{1}

r_{2}=\dfrac{5\times F_{1}\times r_{1}}{F_{2}}

Where, F_{1}=First force

F_{1}=First force

F_{2}=Second force

r_{1}= distance

Put the value into the formula

r_{2}=\dfrac{5\times6\times0.2}{10}

r_{2}=0.6\ m

Hence, The moment arm is 0.6 m

6 0
4 years ago
Which of the following is an example of an electromagnetic wave ?
Alex

Answer:

Its a wave

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