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Alenkasestr [34]
3 years ago
14

Scientists have measured the distance between the Earth and the Moon by reflecting a beam of laser

Physics
1 answer:
FrozenT [24]3 years ago
5 0

Answer:

a)speed of light.

a)speed of light×time=distance.

Explanation:

light has a constant speed of 299,792,458m/s

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Diagram B .... light shines through at an angle
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3 years ago
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WHAT DOES THE INCREASE IN TEMPERATURE INDICATE
KATRIN_1 [288]
Increase in temperature means:
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3 years ago
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If this standing wave is 48.8 meters long from end to end, what is the wavelength?
Mrrafil [7]

The wavelength of a standing wave is 8.13 m.

<h3>What is a wavelength?</h3>

The distance between two successive troughs or crests is known as the wavelength. The peak of the wave is the highest point, while the trough is the lowest.

The wavelength is also defined as the distance between two locations in a wave that have the same oscillation phase.

The given data in the problem is;

String length(L)= 48.8 metere

Wavelength(λ)=?

The length of the wave having n nodes is found as;

L=nλ

Substitute the given value;

48.8 = 6λ

λ= 8.13 m

Hence, the wavelength of a standing wave is 8.13 m.

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brainly.com/question/7143261

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6 0
2 years ago
A person tosses a ball from the ground up into the air at an initial speed of 10 m/sec and an initial angle of 43° off the groun
Artemon [7]
<h2>Component of the velocity of the ball in the horizontal direction just before the ball hits the ground = 7.31 m/s</h2>

Explanation:

In horizontal direction there is acceleration or deceleration for a ball tossed upward at an initial angle of 43° off the ground.

So the horizontal component of velocity always remains the same.

Horizontal component of velocity is the cosine component of velocity.

Initial velocity, u = 10 m/s

Angle, θ = 43°

Horizontal component of velocity = u cosθ

Horizontal component of velocity = 10 cos43

Horizontal component of velocity = 7.31 m/s

Since the horizontal velocity is unaffected, we have

     Component of the velocity of the ball in the horizontal direction just before the ball hits the ground = 7.31 m/s

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