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goldfiish [28.3K]
3 years ago
15

The grid in a triode is kept negatively charged to prevent...

Physics
2 answers:
stepladder [879]3 years ago
5 0

Answer:

B. the electrons from being attracted to the grid instead of the anode.

Explanation:

just because its the answer

Anestetic [448]3 years ago
4 0
I think the correct answer is the third statement, electron from escaping from the tube containing the triode. The negative charge on the grid repels any electron in the tube. As a result,the flow of current is controlled. If the field is that strong, all current flow will stop resulting to maintaining the electron cloud in the tube. 
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Consider four different types of electromagnetic radiation: microwaves, infrared, ultraviolet, and X–rays. Arrange the types of
oksian1 [2.3K]

Answer:

A) from the lowest to the highest frequency:

Microwave - infrared - ultraviolet- X-ray

B) from the highest to the lowest energy:

X-ray - ultraviolet - infrared - microwave

Explanation: electromagnetic spectrum is the range of all types of electromagnetic radiation.

Radiation is the energy that travels and spreads out as it goes out.

4 0
3 years ago
How is the levitation of the SCMagLev train achieved? Just write a sentence.
Harman [31]

Answer:

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5 0
2 years ago
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A gas contained within a piston-cylinder assembly, initially at a volume of 0.1 m3 , undergoes a constant-pressure expansion at
Gnom [1K]

Answer:

Work: 4.0 kJ, heat: 4.25 kJ

Explanation:

For a gas transformation at constant pressure, the work done by the gas is given by

W=p(V_f -V_i)

where in this case we have:

p = 2 bar = 2\cdot 10^5 Pa is the pressure

V_i = 0.1 m^3 is the initial volume

V_f = 0.12 m^3 is the final volume

Substituting,

W=(2\cdot 10^5)(0.12-0.10)=4000 J = 4.0 kJ

The 1st law of thermodynamics also states that

\Delta U = Q-W

where

\Delta U is the change in internal energy of the gas

Q is the heat absorbed by the gas

Here we know that

\Delta U = +0.25 kJ

Therefore we can re-arrange the equation to find the heat absorbed by the gas:

Q=\Delta U + W = 0.25 kJ + 4.0 kJ = 4.25 kJ

7 0
3 years ago
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777dan777 [17]

The answer is

C. periodic fluctuations in the intensity if sound waves.

3 0
3 years ago
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A rubber balloon is rubbed with a PVC pipe and the rubber balloon becomes positively charged. Why is this? a) Because the rubber
pentagon [3]

Answer:

d)

Explanation:

Electrons are lost or gained when the ballon is rubbed with a PVC. As the rubber ballon lost electrons, it will have more protons, hence the positive charge. (More protons than electrons in the ballon).

4 0
2 years ago
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