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Ipatiy [6.2K]
3 years ago
9

Two metallic terminals protrude from a device. The terminal on the left is the positive reference for a voltage called vx (the o

ther terminal is the negative reference). The terminal on the right is the positive reference for a voltage called vy (the other terminal being the negative reference). If it takes 1 mJ of energy to push a single electron into the left terminal, determine the voltages vx and vy.

Engineering
2 answers:
Naya [18.7K]3 years ago
7 0

Answer:

vx=6.242PV

vy=-6.242PV

Explanation:

Two metallic terminals protrude from a device. The terminal on the left is the positive reference for a voltage called vx (the other terminal is the negative reference). The terminal on the right is the positive reference for a voltage called vy (the other terminal being the negative reference). If it takes 1 mJ of energy to push a single electron into the left terminal, determine the voltages vx and vy.

Here 1mj of energy is needed to an electron into the other terminal

voltage of an electron

Recall that E=IVt(product of power and time

but Q=quantity of charge is it     (measured in coulombs)

E/Q=V

Ve=\frac{-1*10^{-3} }{-1.602*10^{-19} }

0.6242*10^16

6.242*10^15

6.242PV(P=Peta=10^15)

voltage ve=6.242PV

Ve is used as Vy

The voltage vf is

Vf=\frac{1*10^{-3} }{-1.602*10^{-19} }

Vf=-6.242*10^15

vf=-6.242PV

therefore, vf is designated as vy

the voltages are of the same magnitude but in different direction

tresset_1 [31]3 years ago
3 0

Answer:

Vx = 6.242 x 10raised to power 15

Vy = -6.242 x 10raised to power 15

Explanation:

from E = IVt

but V = IR from ohm's law and Q = It from faraday's first law

I = Q/t

E = Q/t x V x t = QV

hence, E =QV

V = E/Q

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A furnace wall is to be built of 20-cm firebrick and building (structural) brick of same thickness. The thermal conductivities o
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We know that thermal resistance

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\dfrac{980-T}{\dfrac{0.2}{1.6A}}=\dfrac{T-30}{\dfrac{0.2}{0.7A}}

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Answer:

P_2-P_1=27209h

Explanation:

For pressure gage we can determine this by saying:

The closed tank with oil and air has a pressure of P₁ and the pressure of oil at a certain height in the U-tube on mercury is p₁gh₁. The pressure of mercury on the air in pressure gauge is p₂gh₂. The pressure of the gage is P₂.

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