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Dafna11 [192]
3 years ago
9

Since sound travels faster in warm air, the speed of sound near the ground is increased, leading to a gradual reflection of soun

d waves.
True or False?
Physics
1 answer:
scoray [572]3 years ago
5 0
B. False. beause warm air rises up in the air so first of all there is no warm air near the ground and second of all higher the temperature higher will be the collision of molecules so sound will travel a bit slower than lower temperature
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The color white is what you'd see when every color of light is combined.
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Answer:

E = 124.7 N / C

Explanation:

Let's analyze the exercise: the microwave creates an electromagnetic wave of frequency F = 2.45 GHz, this wave is introduced into the microwave cavity and is reflected on the metal walls, which is why one or more standing waves are formed.

The electric field of the standing wave is

            I = E²

            E =√I

where I is the intensity of the radiation.

What is it

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P = 700 W and the area is A = 25 x 18 cm² = 0.045 m²

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let's calculate the electric field

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7 0
3 years ago
Write<br>any<br>to increase<br>magnitude of current in dynamo​
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Answer:

Explanation:

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4 0
3 years ago
An elevator filled with passengers has a mass of 1603 kg. (a) The elevator accelerates upward from rest at a rate of 1.20 m/s2 f
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Answer:

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Explanation:

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a = acceleration of elevator = 1.2 m/s²

Therefore,

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8 0
2 years ago
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Pie

Answer:

How do you find the net force?

Explanation:

i think this is want you asked for?

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