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MatroZZZ [7]
3 years ago
5

Which kind of mechanical wave needs a source of energy to produce it?

Physics
2 answers:
Over [174]3 years ago
6 0
I think the answer would be T<span>ransverse, Longitudinal, & Surface waves.

</span>
marusya05 [52]3 years ago
3 0
The answer is surface wave, transverse wave, and longitudinal wave!
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An object is 39 cm away from a concave mirrors surface along the principles axis. If the mirrors focal length is 9.50 cm, how fa
Tatiana [17]

Answer:

12.6 cm

Explanation:

We can use the mirror equation to find the distance of the image from the mirror:

\frac{1}{f}=\frac{1}{p}+\frac{1}{q}

where here we have

f = 9.50 cm is the focal length

p = 39 cm is the distance of the object from the mirror

Solving the equation for q, we find:

\frac{1}{q}=\frac{1}{f}-\frac{1}{p}=\frac{1}{9.50 cm}-\frac{1}{39 cm}=0.080 cm^{-1}\\q = \frac{1}{0.080 cm}=12.6 cm

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3 years ago
Explain how sound travels through the air to observer
Harlamova29_29 [7]
Sample:
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3 years ago
What homemade things could I use for wheels on a small balloon powered car?
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You can use mostly anything as long as it is circular. Depending on how big it is, you could use sturdy paper plates and use a stick/rod and tape to hold it together, or you could use bottle caps if the car you are trying to make is really small.

8 0
3 years ago
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There are two tuning forks struck at the same time. One tuning fork is tuned to a frequency note of 500 Hz. The other is tuned t
fomenos

Answer: 26 beats in 2 seconds

Explanation:

The number of beats per second = frequency of tuning fork 1 - frequency of tuning fork 2.

Given :

- frequency of tuning fork 1 = 500Hz

- frequency of tuning fork 2 = 487Hz

Thus,

Beats per second = 500 - 487

= 13 beats per second

Therefore in two(2) seconds, you will have 2 x 13 = 26 seconds.

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Chemical messengers that stimulate a specific cellular response.
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Answer:

Explanation:

hormones. please mark me brainliest

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