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Illusion [34]
4 years ago
13

A standing wave of the third harmonic is induced in a stopped pipe of length 1.2 m. The speed of sound through the air of the pi

pe is 340 m/s. How many antinodes form in the standing wave pattern in the pipe?
Physics
1 answer:
stira [4]4 years ago
7 0

Answer:

Answer is 3.

Explanation:

Start by putting the values in the formula i.e.

Lenght 1.2m

The speed of sound through the pipe 340m/s.

Put it in the formula and the answer is 3.

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3. A force of 90N pushes downward at an angle of 32° to the horizontal on an object resting on the floor. The
Nonamiya [84]

F = m × g

Now when, a force acts on the object at an angle and in downwards, thus formula becomes:

= N = mg + F sin(x)

Here,

  • N = normal force, m = mass , g = acceleration due to gravity, F = outside force, x = the angle formed

See, as we habe to calculate the weight, which is m × g, thus we will recreate thus formula like thus:

= N = w + F sin(x) --------- [Weight = w]

Now, the solutions becomes easy from here, just put the values:

= N = w + F sin(x)

= 200 = w + 90 × sin(32)

= 200 = w + 90 × 0.55

= 200 = w + 49.5

= 200 - 49.5 = w

= 150.5 = w

I have got my answer but in approx, hope you will not mind. ^^"

8 0
3 years ago
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Rudiy27

Answer:

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Explanation:

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8 0
3 years ago
Find the horizontal component and the vertical component ​
aleksandr82 [10.1K]

Answer:

v=3.66,h-3.66

Explanation:

vertical = 10sin60 - 10sin 30

horizontal =10cos60 + 10cos 30

v = 10×0.8660-10×0.5

h = 10×0.5 + 10 × 0.8660

v=8.660-5.0 = 3.66

h= 5.0-8.660 = -3.66

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3 years ago
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AlexFokin [52]

I am going to say

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