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den301095 [7]
3 years ago
10

Sometimes it is very hard to hear in a gymnasium because of echoes . How can you changed it

Physics
1 answer:
BlackZzzverrR [31]3 years ago
7 0
A couple ways to reduce the bouncing of sound waves are to put foam in the wall and put slits down the wall so the sound is asorbed, another way is to hang soft mats of foam from the ceiling, that also asorbs the rogue sound waves.
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ikadub [295]
The first law of thermodynamics states the conservation of energy and heat where the total energy in an isolated system may be transformed into another, but never created or destroyed. If 286 J of energy was released to the room, then also 286 J of energy was also removed from food in that refrigerator assuming it is an isolated system.   :)

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3 0
3 years ago
Draw the following patterns as they would appear when viewed through a compound microscope.:
goblinko [34]
2 j x b
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3 years ago
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mojhsa [17]

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2 years ago
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Round to the hundredths place.
Ivanshal [37]

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21 protons

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4 0
2 years ago
In a city grid, each block on the east-west streets is 100 meters long. Each block on the north-south streets is 20 meters long.
alex41 [277]

Answer:

72.1 m

Explanation:

Hello!

When the walker walks west, each block he walks will be of 100 m, so the walker walked 4*100m = 400 m west.

Similarly, when the walker walks south, he walks 20 meters per block, therefore, the walker walked 4*20 m = 80 m south.

Since the directions west and south are perpendicular, the distance between the start ad end point is:

d = √(400^2 + 80^2) m = 407.92 m

However the walker traveled 480 m

Therefore, the walker traveled 480 - 407.9 m = 72.1 m farther than the actual distance

8 0
3 years ago
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