3 years ago

GUESS WHAT??? I'LL MAKE YOU BRAINLIEST!!! PLEASE HURRY!

Physics

2 answers:

lapo4ka [179]3 years ago

4 0

Answer:

A) direct sunlight striking Earth

Explanation:

Think about why there are seasons.

Here is proof that my answer is correct:

saul85 [17]3 years ago

3 0

Answer:

A) direct sunlight striking Earth

Explanation:

The summer is caused by direct sunlight striking Earth.

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"a horn emits a frequency of 1000 HZ. A 14 m/s wind is blowing toward a listener. What is the frequency of the sound heard by th

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Answer:

$f_L = 1000 Hz$

Explanation:

given,

speed of wind, = 14 m/s

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frequency heard by the listener

using Doppler effect

$f_L = \dfrac{v+v_L}{v+v_s}f_s$

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f_s is the frequency of sound emitted by the listener

V is the speed of sound

v_L is the speed of listener

v_s is the speed of source

now,

considering the frame of reference in which wind is at rest now, both listener and the source will be moving at 14 m/s

$f_L = \dfrac{v+14}{v+14}\times 1000$

now on solving we will get

$f_L = 1000 Hz$

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