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VMariaS [17]
3 years ago
12

If you wanted to soundproof your bedroom, the best material to line the walls would be

Physics
1 answer:
Vsevolod [243]3 years ago
6 0

Answer:

a soft foam material because soft materials absorb sound better

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onsider the free body diagram. If the sum of the tension forces is equal to the force of gravity, which description BEST applies
cluponka [151]
The answer is C) A girl hangs by both hands, motionless, from a trapeze.
5 0
3 years ago
What unit is used to measure the period of a wave?
mixer [17]

Answer:

D. Meters/Seconds

Explanation:

The time period of a wave is measured in seconds.

A typical wave involves both time and distance.  Consider a sound wave, which is basically a periodic modulation of the local air pressure.  We "hear" the sound because our ears respond to the variations of pressure.

The most common metric of a sound wave is frequency.  This is the rate at which the change in pressure occurs, and is measured in cycles per second, formally known as "hertz".  The period is the inverse of frequency andl has the units of seconds per cycle, commonly stated simply as seconds.

4 0
2 years ago
IF YOU GET GOOD GRADES ON SCIENCE TESTS PLEASE HELP ME!!!!!
Elena-2011 [213]

Answer:

A i think hope this helps

Explanation:

5 0
3 years ago
Read 2 more answers
How long will it take a 400 W engine to lift a 100 N object up to a height of 80 m?
Norma-Jean [14]
<h3>Answer:</h3>

20 seconds

<h3>Explanation:</h3>

<u>We are given</u>;

  • Power of the engine as 400 watts
  • Force as 100 N
  • Distance the object is lifted up as 80 m

We are required to determine the time taken.

  • We need to know that power is the rate of work done

Therefore;

  • Power = Work done ÷ time

But, work done  = Force × distance

  • Therefore; In this case;

Work done = 100 N × 80 m

                  = 8000 Joules

  • Since , Power = Work done ÷ time

Then, time = Work done ÷ Power

Thus;

Time = 8000 J ÷ 400 W

       = 20 s

Therefore, the time taken by the engine to lift the object is 20 seconds

4 0
3 years ago
Read 2 more answers
What is the mass of the object being measured?
ioda

Answer:

m = 375 [gram]

Explanation:

A triple Beam balance is an instrument very easy to use, since we only have to perform the arithmetic sum of each of the weights that are recorded in each beam

m = 300 + 70 + 5 = 375 [gram]

For a better understanding, the following image is attached, with values on each beam, which should be read.

The largest mass is in the indicator of 100 [gram], the second mass is in the indicator of 20 [gram] and the third is in the indicator of 5.8 [gram]. Thus the arithmetic sum corresponds to:

M= 100 + 20 + 5.8 = 125.8 [gram]

Note: it is important that when the instrument is in balance, the opposite end of the beam should indicate a position of zeros.

6 0
3 years ago
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