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iren2701 [21]
4 years ago
5

Two timpani (tunable drums) are played at the same time. One is correctly tuned so that when it is struck, sound is produced tha

t has a wavelength of 2.20 m. The second produces sound with a wavelength of 2.10 m. If the speed of sound is 343 m/s, what beat frequency is heard?
Physics
1 answer:
yKpoI14uk [10]4 years ago
4 0

Answer:

Explanation:

Given

Wavelength of first timpani \lambda _1=2.2\ m

Frequency corresponding to this Wavelength

f_1=\frac{v}{\lambda _1}

where v=velocity\ of\ sound (343 m/s)

f_1=\frac{343}{2.2}

f_1=155.9\ Hz

Wavelength of Second timpani \lambda _2=2.1\ m

Frequency corresponding to this Wavelength

f_2=\frac{v}{\lambda _2}

f_2=\frac{343}{2.1}=163.33\ Hz

Beat frequency =f_2-f_1

Beat frequency =163.33-155.9=7.43

so approximately 7 beats per second

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Answer:

the total mass after chemical burn is 700 gram

Explanation:

Given data

glass mas s= 200 gram

chemical mass = 500 gram

total mass = 700 gram

to find out

what is the total mass after chemical burn

solution

we have given 200 gram + 500 gram = 700 gram

and we know here according to question that

container is sealed so total mass remain in container before burning and after burning

no air will release in seal container so

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3 0
4 years ago
The total mass of the train and its passengers is 750000kg. The train is traveling at a speed of 84m/s. The driver applies the b
fiasKO [112]

Answer:

|F| = 393750  N

Explanation:

Given that,

Total mass of the train, m = 750000 kg

Initial speed, u = 84 m/s

Final speed, v = 42 m/s

Time, t = 80 s

We need to find the net force acting on the train. The formula for force is given by :

F = ma

F=\dfrac{m(v-u)}{t}\\\\F=\dfrac{750000\times (42-84)}{80}\\\\F=-393750\ N

So, the magnitude of net force is 393750  N.

4 0
3 years ago
Why do blades come in different lengths in a jig saw sander?​
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Answer:

To determine the minimum blade length, add 1" to the workpiece thickness. One type of material, and some materials can be cut by more than one type of blade. No matter the material, there's likely a jigsaw blade designed specifically for. Armed with the right blade, follow these pointers to make your work go (and cut) .

Explanation:

6 0
3 years ago
Describe two ways alloys improve upon the properties of pure metal elements ?
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A) Metal expand upon heating. B) Alloys expand less upon heating than elemental metals. C) Alloys expand more upon heating than elementals metals. D) The rate of the expansion of metals is directly proportion to the temperature to which it is heated
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4 years ago
a man exerts 3000.00N of force to push a car 35.00 meters in 90.00 seconds.... 1. what is the work done 2.what is the power gene
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1).  Work = (force) x (distance)

Work = (3,000 newtons) x (35 meters) = 105,000 newton-meters = <em>105,000 joules</em>

2).  Power = (work) / (time)

Power = (105,000 joules) / (90 seconds)
                                         = 1,166-2/3 joules per second =<em> 1,166 and 2/3 watts</em> .

<em>Note:</em>
That's no ordinary man.
1,166 watts is the same as roughly 1.6 horsepower.
Not too many people can sustain 1 horsepower or more for 90 seconds.




4 0
4 years ago
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