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bagirrra123 [75]
3 years ago
5

Must new substance be formed when you observe property

Physics
1 answer:
d1i1m1o1n [39]3 years ago
6 0
Of course not !
You can observe the color of a rose, measure the length of
your house, take the temperature of your hot chocolate, and
measure your own weight, without creating any new substances.
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What is the gradual process through which humans change from birth to<br> adulthood?
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Growth and Development

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What is the frequency of a wave if the speed is 24 m/s and the wave is 2 meters
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3 years ago
If you measure the amount of work accomplished in a particular time interval, u have measured-
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Answer:

The power

Explanation:

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W = F * d

where:

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d = distance [meters] [m]

W = work [Joules]

And the expression that defines the work done by unit of time is called - <u>Power</u>, therefore:

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6 0
3 years ago
A violin string is 45.0 cm long and has a mass of 0.242 g. When tightened on the neck of the violin, the distance between the pi
stiks02 [169]

Answer:

The tension is 75.22 Newtons

Explanation:

The velocity of a wave on a rope is:

v=\sqrt{\frac{TL}{M}} (1)

With T the tension, L the length of the string and M its mass.

Another more general expression for the velocity of a wave is the product of the wavelength (λ) and the frequency (f) of the wave:

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We can equate expression (1) and (2):

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Solving for T

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\lambda_{harmonic}=\frac{2l}{N_{harmonic}}

It's is important to note that in our case L the length of the string is different from l the distance between the pin and fret to produce a Concert A, so for the first harmonic:

\lambda_{1}=\frac{2(0.425m)}{1}=0.85 m

We can now find T on (3) using all the values we have:

T= \frac{2.42\times10^{-3}(0.85* 440)^2}{0.45}

T=75.22 N

3 0
3 years ago
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