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2 years ago

Which valve installed in a hydraulic system will have the highest pressure setting?

Physics

1 answer:

masha68 [24]2 years ago

5 0

ThermalThermal relief valve installed in a Hydraulic system will have the highest pressure setting.

<h3>What is the hydraulic system? What are the types of hydraulic systems ? </h3>

Hydraulic system function and perform tasks through using a fluid that is pressurized . There are two types of hydraulic systems open loop hydraulic systems and closed loop hydraulic system . In open loop ,when the actuating mechanism is idle ,there will be fluid flow but no pressure.

Closed loop system use an additional pump called charge pump or feed pump.

Thermal relief valve is Designed to protect the pump and operators in circumstances when the pump is running and the discharge outlets have been closed .

to learn more about Hydraulic system click here brainly.com/question/27961071

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HELP NEEDED IMMEDIATELY

algol13

The answer is 5 m/ sec squared (Vf-V0)/T....final velocity minus initial velocity divided into time.

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3 years ago

What is the maximum kinetic energy (in eV) of a photoelectron when a surface, whose work function is 5.0 eV, is illuminated by p

Aleksandr [31]

Answer: -1.898 ev (this means the photoelectric effect cannot occur)

Explanation:

The photoelectric effect consists of the emission of electrons (electric current) that occurs when light falls on a metal surface under certain conditions.

If the light is a stream of photons and each of them has energy, this energy is able to pull an electron out of the crystalline lattice of the metal and communicate, in addition, a kinetic energy.

This is what Einstein proposed:

Light behaves like a stream of particles called photons with an energy

$E=h.\nu$ (1)

So, the energy $E$ of the incident photon must be equal to the sum of the Work function $\Phi$ of the metal and the kinetic energy $K$ of the photoelectron:

$E=\Phi+K$ (2)

Where $\Phi$ is the minimum amount of energy required to induce the photoemission of electrons from the surface of a metal, and its value depends on the surface.

In this case $\Phi=5 eV$

So, applying equation (1) in this problem:

$E=h \nu$

Where:

$h=4.136(10)^{-15}eV.s$ is the Planck constant

$\nu$ is the frequency

Now, the frequency has an inverse relation with the wavelength $\lambda=400(10)^{-9}m$ :

$\nu=\frac{c}{\lambda}$ (3) Being $c=3(10)^{8}m/s$ is the speed of light in vacuum

$\nu=\frac{3(10)^{8} m/s}{400(10)^{-9}m}$ (4)

$\nu=7.5(10)^{14} Hz$ (5)

Substituting (5) in (1):

$E=(4.136(10)^{-15}eV.s)(7.5(10)^{14} Hz)$ (6)

$E=3.102 eV$ (7)

Now, substituting (7) in (2):

$3.102 eV=5 eV+K$ (8)

Finding $K$ :

$K=-1.898 eV$ (9) Since a negative kinetic energy is not physically possible, the only explanation is: the conditions for a photoelectric effect were not met, hence the photoelectric effect cannot occur.

To understand it better:

The main condition for the occurrence of the photoelectric effect is that the energy incident photon $E$ must be greater than the work function $\Phi$

$E>\Phi$

If $E$ (as in this situation) photoelectric effect cannot occur.

6 0

3 years ago

You have two identical needles. One of them is magnetized and the other is not. How, without the use of anything besides the two

il63 [147K]

Answer:

By suspending the needles on in the air, the needle which orients itself in the north-south direction is magnetized

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The only method to check a magnet individually without the help of another magnet or magnetic substance on the earth is by suspending it in the air which orients itself in the direction of the magnetic field of the earth.

This is when the non-magnetic needle will not align itself as the magnetic needle does in the magnetic field of the earth.

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3 years ago

I need help!!! I will give YOU brainliest if you answer something I like!\

Alexxx [7]

Answer:

The law of conservation of energy says that the total energy of a closed system will remain constant (so its conserved over time). This law is also where you get energy can't be created or destroyed, only converted. One example is a bowling ball hitting pins. Since the bowling ball has kinetic energy (it's moving), hitting the pins will transfer the ball's energy over to the pins. This makes the bowling pins fall over.

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3 years ago

What is the frequency of light with a wavelength of 7.9 x 10^-9 m? ( the speed of light is 3.00 x 10^8)

nlexa [21]

Using the formula v=f times lambada
then v=the speed of light.
and f=what’s we’re looking for
and lambada=the wavelength.

so then you sub what you have (v and lambada) in the formula.
then multiply the frequency(f) by the given wavelength and then solve for f

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3 years ago