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3 years ago

Bernoulli’s principle helps explain the hydraulics of brake fluid in cars. true or false

2 answers:

8 0

This statement is true.

Bernoulli’s principle explains the relation between the speed of the fluid and the pressure or potential energy of the fluid.
Bernoulli explained that an increase in the speed of a fluid is accompanied with a decrease in pressure and potential energy of the fluid.

This principle can be applied to the hydraulics of brake fluid in cars.

gavmur [86]3 years ago

7 0

Explanation :

The principle behind Hydraulic brakes is Pascal's law.

According to Bernoulli's principle, the speed of a fluid depends inversely on the pressure or on the potential energy of the fluid.

Mathematically,

$P_1+\dfrac{1}{2}\rho v_1^2+\rho gh_1=P_2+\dfrac{1}{2}\rho v_2^2+\rho gh_2$

According to Pascal's law, there is an equal distribution of the pressure in the container having fluids i.e.

$P_1=P_2$

Hence, the given statement is false.

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Unless indicated otherwise, assume the speed of sound in air to be v = 344 m/s. You have a stopped pipe of adjustable length clo

faltersainse [42]

Answer:

Length of pipe $= 0.057$ meter

Explanation:

Speed of a transverse wave on a string

$v = \sqrt{\frac{F}{\mu} }$

where F is the tension in string and $\mu$ is the mass per unit length

Thus,

$\mu = \frac{m}{L}$

Substituting the given values we get -

$\mu = \frac{7.25 * 10^{-3}}{0.62}\\mu = 0.0117 \frac{Kg}{m}$

Speed of a transverse wave on a string

$v = \sqrt{\frac{4510}{0.0117} } \\v = 620.86 \frac{m}{s}$

For third harmonic wave , frequency is equal to

$f = \frac{nv}{2L}$

Substituting the given values, we get -

$f = \frac{3 * 620.86}{2 * 0.62} \\f = 1502.08$

Length of pipe

$L = \frac{nv}{4 f}$

Substituting the given values we get

$n = 1$ for first harmonic wave

$L = \frac{344* 1}{4*1502.08} \\L = 0.057$

Length of pipe $= 0.057$ meter

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2 years ago

The surface tension of water is 7.28 ✕ 10−2 J/m2 at 20°C. Predict whether the surface tension of octane would be higher or lower

qaws [65]

Explanation:

It is known that octane is a hydrocarbon and London dispersion forces are the main intermolecular forces which are present in it.

Whereas water molecules tend to form hydrogen bonding forces which are actually much stronger than dipole-dipole interactions. This means that more energy is necessary to separate water molecules from one another than to separate octane molecules from one another.

Hence, we can conclude that surface tension of octane is expected to be lower than that of water when the two are considered at the same temperature.

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2 years ago

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Answer:

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2 years ago

Sections or chunks of material where atoms are lined up with each other are called...

ArbitrLikvidat [17]

Answer:

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Explanation:

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