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Greeley [361]
3 years ago
6

Please Help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!11

Physics
1 answer:
Svetlanka [38]3 years ago
6 0

Answer:

a)The correct answer is option X

b)The correct answer is option Z

Explanation:

For question 3 -

When the 2 waves interfere , they add up at all the points

Since the 2 waves have 0 phase difference (as seen from the diagram) , the resultant wave also has 0 phase difference.

The amplitude of 2 waves will simply add up -

A_{1} = 1

A_{2} = 0.5

∴A_{net} = A_{1} + A_{2} = 1.5

The resultant wave should also have 0 displacement at origin.

∴The correct answer is option X

For question 35 -

The 2 waves are out of phase by 180°

∴ The amplitude of two waves would simply get subtracted -

A_{1} = 1

A_{2} = 1

∴A_{net} = A_{1} - A_{2} = 0

Since the amplitude is 0 the displacement of wave would be 0 at every point.

∴ The correct answer is option Z

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A telescope can be used to enlarge the diameter of a laser beam and limit diffraction spreading. The laser beam is sent through
Novay_Z [31]

Answer:

Angular spread, \theta=1.472\times 10^{-7}\ rad

Explanation:

It is given that,

Wavelength of the light, \lambda=613\ nm=613\times 10^{-9}\ m

Diameter of the telescope, D = 5.08 m

The minimum angular spread is given by :

\theta=\dfrac{1.22\lambda}{D}

\theta=\dfrac{1.22\times 613\times 10^{-9}}{5.08}

\theta=1.472\times 10^{-7}\ rad

So, the minimum angular spread of the beam is 1.472\times 10^{-7}\ radian. Hence, this is the required solution.

5 0
3 years ago
An emf is induced in response to a change in magnetic field inside a loop of wire. Which of the following changes would increase
goldenfox [79]

Answer:

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According to Faraday's law, whenever there is a change in the magnetic lines of force, it leads the production of induced emf. The magnitude of induced emf is proportional to to the rate of change of flux.

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8 0
3 years ago
15 PTS!!!!
Anon25 [30]
I thinks its period because they are on the last column to the right
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3 years ago
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if you push a small act with 7,000 N force and push a heavy truck with the same force, which one will have a greater acceleratio
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Answer:

the small one will have greater acceleration

Explanation:

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2 years ago
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