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3 years ago

1) a cathode-ray tube is a type of ______ tube.

1 answer:

galina1969 [7]3 years ago

4 0

1) Vacuum tube
2) silicon
3) integrated, I.C.s
4) this one is worded weird. Transistors are the main part of voltage regulators but they use (require) diodes and capacitors, too. And they are all put onto a microchip in the power distribution section. sorry for the long explanation.
5) away from
6) directly, inversely

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In most cases, letters of reconmendation are required for addmission to?

kykrilka [37]

Answer:

Get your recommenders to mention diverse achievements. ...

Help your recommenders with relevant info. ...

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The tone of the letter should not be too dry.

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3 years ago

Which statement best describes the difference between strong nuclear forces and weak nuclear forces?

aleksandrvk [35]

The list of statements you included has no good descriptions at all.

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3 years ago

Which is the work required to move a charge?

Marrrta [24]

Answer:

electric potential energy

Explanation:

Electric potential energy is a energy that is needed to move a charge against an electric field. You need more energy to move a charge further in the electric field,but also more energy to move it through a stronger electric field.

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3 years ago

Determine the energy required to accelerate an electron from (a) 0.500c to 0.900c and (b) 0.900c to 0.990c

Lera25 [3.4K]

Answer:

0.582 MeV

2.45 MeV

Explanation:

$E_r=0.511\ MeV$ =Electron rest energy

(a) 0.500c to 0.900c

$W=\left(\frac{1}{\sqrt{1-\frac{v_f^2}{c^2}}}-\frac{1}{\sqrt{1-\frac{v_i^2}{c^2}}}\right)E_r\\\Rightarrow W=\left(\frac{1}{\sqrt{1-0.9^2}}-\frac{1}{\sqrt{1-0.5^2}}\right)0.511\\\Rightarrow W=0.582\ MeV$

Energy required is 0.582 MeV

(b) 0.900c to 0.990c

$W=\left(\frac{1}{\sqrt{1-\frac{v_f^2}{c^2}}}-\frac{1}{\sqrt{1-\frac{v_i^2}{c^2}}}\right)E_r\\\Rightarrow W=\left(\frac{1}{\sqrt{1-0.99^2}}-\frac{1}{\sqrt{1-0.9^2}}\right)0.511\\\Rightarrow W=2.45\ MeV$

Energy required is 2.45 MeV

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3 years ago

How do i exist (serious question, i'm in the dark abyss of nothing please help)

Reptile [31]

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2 years ago