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storchak [24]
4 years ago
15

Why does a siren have a lower pitch as it moves away from you? A The period of the sound wave is decreased B The amplitude of th

e sound wave is increased C The crests of the sound wave are farther apart D The troughs of the sound wave are spaced closer together. ​
Physics
2 answers:
Phantasy [73]4 years ago
7 0

Answer:

C

Explanation:

I think it's C because when it moves further away the sound wave is moving apart  

sweet-ann [11.9K]4 years ago
4 0

Answer:

it is letter C

there is a video explaining this

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It can cause the water to create algae.
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4 years ago
A student exerts a force of 35 newtons to move a cart loaded with lab equipment to the prep room 20 meters. If it takes the stud
hram777 [196]

Answer:

option D

Explanation:

Power = work divided by time

and Work is equal to force multiplied by displacement

therefore power =\frac{35 \times 20}{10}  = 70

please mark me brainliest and 5 star

8 0
3 years ago
Frosty the Snowman accelerates from 16 m/s to 26 m/s in 2 s. What is his acceleration?
Alex_Xolod [135]

Answer:

his acceleration is 3.25

Explanation:

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6 0
3 years ago
Based on its type of chemical bond, which of the following has the highest boiling point?
Sever21 [200]
<h3><u>Answer;</u></h3>

Potassium chloride

<h3><u>Explanation;</u></h3>
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5 0
3 years ago
If a solid metal sphere and a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midw
olga55 [171]

Answer:

C. zero for both

Explanation:

In case of solid metal sphere , when it is given any charge , all the charges are transferred on the surface and within surface no charge exists . In case of hollow metal sphere , all charges reside on surface . In this way , in both solid and hollow sphere , all charge reside on the surface and no charge resides inside it . Hence due to absence of any charge inside  , there is no electric field inside the sphere in both the cases .  

Hence in both the case electric field is zero .

option C is correct .

8 0
3 years ago
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