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yawa3891 [41]
3 years ago
9

If a stereo has a dial that changes the volume of the sounds the stereo makes, what is the dial doing? a. changing the number of

times a wave passes by a point b. changing the pitch of the sound waves. c changing the length of the sound waves d. changing the amplitude of the sound waves
Physics
2 answers:
Over [174]3 years ago
8 0
If the stereo has a dial that changes the volume of the sounds the stereo makes, the one that being done by the dial is : D. Changing the amplitude of the sound waves

Hope this helps
babymother [125]3 years ago
6 0

Answer: The correct answer is (d).

Explanation:

The stereo has a dial that changes the volume of the sound the stereo makes.

The intensity of the sound increases with the amplitude of the sound wave. The energy of the sound wave is directly proportional to the amplitude of the wave.

The loudness of the sound increases with increase in the amplitude of the sound wave.

Therefore, the stereo has a dial that changes the volume of the sound the stereo makes. In this case, the dial is changing the amplitude of the sound waves.  

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In the data table , distance is measured in meters and time is in seconds. Calculate the mans average velocity using the equatio
Artist 52 [7]

Answer:

3.626 m/s

Explanation:

v=d/t

1. -0.02/0 = 0 m/s

2. 0.86/0.2 = 4.3 m/s

3. 1.71/0.4 = 4.275 m/s

4. 2.54/0.6 = 4.23 m/s

5. 3.32/0.8 = 4.15 m/s

6. 4.08/1.0 = 4.08 m/s

7. 4.79/1.2 = 3.99 m/s

8. 5.48/1.4 = 3.91 m/s

9. 6.15/1.6 = 3.84 m/s

10. 6.76/1.8 = 3.76 m/s

11. 7.37/2.0 = 3.66 m/s

12. 7.92/2.2 = 3.6 m/s

13. 8.45/2.4 = 3.52 m/s

14. 8.96/2.6 = 3.45 m/s

the mean of these numbers is 3.626

his average velocity ks 3.626 m/s

6 0
2 years ago
A boy standing on a bridge above a river throws stone A vertically upward with an initial velocity =15m/s.2 seconds later he dro
Anastaziya [24]

I'm not sure if this is correct but it's what I'll do

This is free-fall problem.
Stone A is thrown upward, at the point it falls down to the place where it was thrown, the velocity is -15m/s.

Now I choose the bridge is the origin. From the bridge, stone A and B fall the same distance which means Ya = Yb ( vertical distance )

Ya = Vo(t + 2) + 1/2a(t+2)^2
= -15(t + 2) + 1/2(9.8)(t^2 + 4t + 4)
= -15t - 30 + 4.5(t^2 + 4t + 4)
= -15t - 30 + 4.5t^2 + 18t + 18
= 4.5t^2 +3t - 12

Yb = Vo(t) + 1/2a(t)^2
= 0 + 4.5t^2

4.5t^2 = 4.5t^2 +3t - 12
0 = 3t - 12
4 = t

Time for Stone B is 4s
Time for Stone A is 6s

7 0
3 years ago
How much time would it take for an object to fall 4.7 meters
levacccp [35]

Answer:

4.7 is 10 as much as the number 0.47.

If you multiply 0.47 x 10 it will equal 4.7

Explanation:

4 0
2 years ago
True or False - Solar energy comes from wind energy?
vladimir1956 [14]
False. solar comes from the sun while wind energy comes from the wind. hope this helps!
3 0
3 years ago
Why can Muhammad exert a greater punching force with his bare fist than he can while wearing a
weqwewe [10]

Answer:

the glove could be heavy so slowing down his power

Explanation:

JUST GUESSED

5 0
3 years ago
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