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Softa [21]
3 years ago
3

A tuba creates a 4th harmonic of frequency 116.5 Hz. When the first valve is pushed, it opens an extra bit of tubing 0.721 m lon

g. What is the new frequency of the 4th harmonic ? (Hint : Find the original length .)
Physics
1 answer:
lions [1.4K]3 years ago
0 0

Answer:

The new frequency is:

f₄ = 93.54 Hz

Explanation:

The data given to us is:

No. of harmonic frequency = 4

f₄ = 116.5 Hz

We know that the harmonic frequency is given by the formula:

fₙ = (n · v)/4L

where

n = no. of harmonic frequency

v = speed of sound

L = Length of rope

Lets find the initial length of rope for 4rth harmonic frequency (n=4) and v=343 m/s

fₙ = (n · v)/4L

f₄ = 4v/4L

f₄ = v/L

L = v/f₄

L = 343/116.5

L= 2.944m

Find frequency for new length that is 2.944m + 0.721m = 3.667m

f₄ = v/l

f₄ = 343/3.667

f₄ = 93.54 Hz

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Answer:

684J

Explanation:

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We don't have the mass but since we have the height, we multiply directly with the height since the quantity of weight is already given.

so G.p.e = 360 X 1.9 = 684J

Note that; The answer is in joules because g.p.e is work done.

Hope that was helpful!!

7 0
3 years ago
Two forces act on a 6.00-kg object. One of the forces is 10.0 N. If the object accelerates at 2.00 m/s2
liubo4ka [24]

Given :

Two forces act on a 6.00-kg object. One of the forces is 10.0 N.

Acceleration of object 2 m/s².

To Find :

The greatest possible magnitude of the other force.\

Solution :

Let, other force is f.

So, net force, F = 10 + f.

Now, acceleration is given by :

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Therefore, the greatest possible magnitude of the other force is 2 N.

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7 0
2 years ago
A barrel of oil is exactly 42 gal. how many liters of oil are in a barrel
Natali [406]
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Keeping this in mind...

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If rounding, there are about 159 liters of oil in a barrel.
6 0
3 years ago
An automatic dryer spins wet clothes at an angular speed of 5.2 rad/s. Starting from rest, the dryer reaches its operating speed
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<h2>Time taken by dryer to come up to speed is 1.625 seconds.</h2>

Explanation:

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     Initial velocity, u =  0 rad/s

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     Time, t = ?

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     Substituting

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6 0
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Answer:

Ap. 4.6

Explanation:

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