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3 years ago

32. Increasing the amplitude of a sound wave produces a

Physics

1 answer:

ss7ja [257]3 years ago

7 0

Answer:

Explanation:

because amplitude of a sound wave is related to loudness of the sound, so the higher the amplitude, the louder the sound

hope this helps

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Choose the option that correctly answers and explains the question, "If the sum of the forces acting on an object equals zero, d

rusak2 [61]

Answer:No it means that the object is at equilibrium

Explanation:

The sum of force acting opposite is equal to zero if forces are equal.

6 0

4 years ago

Read 2 more answers

Difference between elastic and inelastic collisions

Eva8 [605]

An elastic collision is where there is no loss of kinetic energy in the collision. Momentum is conserved saved in inelastic collisions, but cannot track the kinetic energy through the collision since some of it is changed into other forms of energy.

3 0

3 years ago

The deviation of a value (x) from the mean of the sample divided by the standard deviation (s)of the sample is known as the "z"

Ugo [173]

Answer:

true.

Explanation:

z-score gives an idea of how far the value of data is from the mean point. Basically is the measure of a standard deviation below or above the mean.

More the deviation of the data from the mean more is the standard deviation.

Z-score or value is calculated by the expression given below:

$z = \dfrac{x-\mu}{\sigma}$

x is the value

μ is the mean

σ is the standard deviation

Hence, the statement given is true.

6 0

3 years ago

A roller coaster is entering a vertical loop which has a radius of 25.0 m. If the coaster is

MakcuM [25]

Answer:

6080 N

Explanation:

F = m v² / r

F = (75.0 kg) (45.0 m/s)² / (25.0 m)

F = 6075 N

Rounded to three significant figures, the centripetal force is 6080 N.

6 0

4 years ago

A film of oil that has an index of refraction of 1.45 rests on an optically flat piece of glass of index of refraction n = 1.60.

blagie [28]

Answer:

442.75862 nm

Explanation:

m = Order

n = Refractive index

$\lambda$ = Wavelength

We have the relation of thickness and wavelength given by

$2nt=m\lambda$

The consecutive spectral line is given by

$2nt=(m+1)\lambda$

So,

$\lambda=\dfrac{2nt}{m}\\\Rightarrow 642=\dfrac{2nt}{m}$

and

$428=\dfrac{2nt}{m+1}$

Dividing the wavelengths we get

$\dfrac{642}{428}=\dfrac{m+1}{m}\\\Rightarrow 1.5 m=m+1\\\Rightarrow m=\frac{1}{0.5}\\\Rightarrow m=2$

$t=\dfrac{m\lambda}{2n}\\\Rightarrow t=\dfrac{2\lambda}{2n}\\\Rightarrow t=\dfrac{642}{1.45}\\\Rightarrow t=442.75862\ nm$

The film thickness of oil is 442.75862 nm

8 0

3 years ago