3 years ago

What happens when a ray of light is directed at a mirror, a glass block and a prism?

1 answer:

5 0

When it is directed at a mirror it is reflected
When it is directed at a glass block it refracts
When it is directed through a prism the light splits to form a spectrum ( red orange yellow green blue indigo and violet )

Hope this is ok

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If you break a magnet in two you get

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Two separate magnets.

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2 years ago

A time-varying magnetic field is caused by which of the following?

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A time-varying magnetic field can be caused by fluctuating electric fields.

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3 years ago

Read 2 more answers

1. What coefficients would balance the following equation?

Stolb23 [73]

Answer:

no question matee

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2 Name the device in a car that we use to change the speed of the car

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Have a good day! :3

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2 years ago

Suppose you pluck a string on a guitar and it produces the note A at a frequency of 440 Hz. Now you press your finger down on th

MAVERICK [17]

Answer:

D. 550 Hz

Explanation:

Frequency for string is given by

$f_{} =\frac{v}{2L}$

where v is the speed of the wave, L = m is the length

Frequency is inversely proportional to the Length of the string

$f \alpha \frac{1}{L} \\$

from above relation we can write

$\frac{f_{1}}{f_{2}} =\frac{L_{2}}{L_{1}}$

The newly shortened string has 4/5 the length of the full string .i,e

$\frac{440}{f_{2}} =\frac{\frac{4}{5}L_{1} }{L_{1}}\\f_{2}=\frac{440\times5}{4} \\f_{2}=550 Hz$

Hence option D is correct

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3 years ago