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3 years ago

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!! Which number shows the wavelength?

Physics

2 answers:

Ray Of Light [21]3 years ago

6 0

If you read the question carefully, you can find the answer right there in it.

In fact, you don't even have to read the whole question ... you only need to read one word.

In fact, you don't even have to read the whole word ... you only need to read part of the word.

The word to read is "wavelength".

The important part of the word is "length".

<em>Now</em> it's time to look at the picture:

#1 is a height.

#2 is a place on the wave

#4 is a place on the wave

<em>#3 </em>is the only thing in the picture that's a "length" of anything.

uysha [10]3 years ago

6 0

Number 3 is the wavelength

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lesya [120]

The percentage error in calculated value of the refractive index of acrylic block is calculated using the formula: (true value - calculated value/true value) × 100%.

<h3>What is refractive index of a refracting medium?</h3>

The refractive index of a medium is the ratio of the sine of the angle of incidence on the medium and the sine of the angle of refraction.

Refractive index = sin i/sin r

where;

i is the angle of incidence
r is angle of refraction.

The refractive index of a medium increases with density of the medium.

To determine the percentage error in determining the refractive index of a medium, the following formula is used:

Percent error = error/true value × 100%

Therefore, the percentage error in calculated value of the refractive index of acrylic block is the ratio of the error and true value multiplied by 100%.

Learn more about refractive index at: brainly.com/question/83184

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3 years ago

A light ray reflects off a mirror with an angle of incidence of 65 degrees.

cluponka [151]

Answer:

Angle of reflection is also 65 degrees

Explanation:

angle of incidence = angle of reflection

3 0

3 years ago

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A 3kg ball moving at 8 m/s strikes a 2kg ball at rest,if the collision is elastic,what is the speed of the lighter ball if the h

zloy xaker [14]

Answer:

Speed of lighter ball is 4 m/s.

Explanation:

Applying the principle of conservation of linear momentum,

momentum before collision = momentum after collision.

$m_{1}$ $u_{1}$ + $m_{2}$ $u_{2}$ = $m_{1}$ $v_{1}$ - $m_{2}$ $v_{2}$

$m_{1}$ = 3 kg, $u_{1}$ = 8 m/s, $m_{2}$ = 2 kg, $u_{2}$ = 0 m/s ( since it is at rest), $v_{1}$ = 2 m/s, $v_{2}$ = ?

(3 x 8) + (2 x 0) = (8 x 2) - (2 x $v_{2}$ )

24 + 0 = 16 - 2 $v_{2}$

2 $v_{2}$ = 16 - 24

2 $v_{2}$ = -8

$v_{2}$ = $\frac{-8}{2}$

= -4 m/s

This implies that the light ball moves at the speed of 4 m/s in the opposite direction of the heavier ball after collision.

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3 years ago

Sort the sentences based on whether they describe radio waves, visible light waves, or both.

valentina_108 [34]

The electromagnetic spectrum includes a continuous spectrum of wavelengths that include:

Radio waves, microwaves, infrared light, visible, ultraviolet, X-rays, gamma rays

The wavelength decreases from radio waves to gamma rays, whereas the energy increases along the same direction.

In the given example, radio waves have a lower energy and higher wavelength than visible light. The latter can be perceived by the human eye, whereas radio waves are not visible to the human eye.

1) They have colors = visible light

2) They can travel in a vacuum = both

3) They have energy = both

4) They’re used to learn about dust and gas clouds = radio waves

5) They’re used to find the temperature of stars = visible light

6)They’re invisible = radio waves

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4 years ago

Water is a great conductor of electricity. True or False

astraxan [27]

Answer:

False

Explanation:

Think about every warning on electrical products, which is 'DO NOT KEEP NEAR WATER'

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3 years ago

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