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mr_godi [17]
3 years ago
6

A windmill is example of a a.generator b.resistor c.insulatord.motor

Physics
1 answer:
Alexandra [31]3 years ago
4 0
The answer is a. generator!
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A physical (beam) is used to measure?​
Kisachek [45]

Answer:

mass of a object is the answer

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2 years ago
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If you calculate the thermal power radiated by typical objects at room temperature, you will find surprisingly large values, sev
OverLord2011 [107]

Answer:

best explanation of this is sentence B

Explanation:

The radiation emission of the bodies is given by the expression

     P = σ A e T⁴

Where P is the power emitted in watts, σ is the Stefan-Boltzmann constant, A is the surface area of ​​the body, e is the emissivity for black body e = 1 and T is the absolute body temperature in degrees Kelvin.

When the values ​​are substituted the power is quite high 2.5 KW, but the medium surrounding the box also emits radiation

   T box ≈ T room

    P box ≈ P room

As the two powers are similar and the box can absorbed, since it has the ability to emit and absorb radiation, as the medium is also close of the temperature of the box, the amount emitted is very similar to that absorbed, so the net change in energy is very small.

   In the case that the box is much hotter or colder than the surrounding medium if there is a significant net transfer.

Consequently, the best explanation of this is sentence B

5 0
2 years ago
I’m a god, a planet, and I measure heat. What am I?
Leno4ka [110]

mercury??????? my only guess

8 0
2 years ago
When electrons are moving freely between many positive ions, what type of bond is occuring?
exis [7]

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a metallic

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8 0
2 years ago
A proton has been accelerated from rest through a potential difference of -1350 V. What is the proton's kinetic energy, in elect
Luba_88 [7]

Answer:

1 eV = 1.60 * 10^-19 J      work done in accelerating electron thru 1 V

KE (total energy) = 1350 ^ 1 eV     (note proton goes from +  to -)

KE = 1.60 * 10^-19 * 1350 = 2.16 * 10^-16 Joules

1/2 m v^2 = KE = 2.16 * 10^-16 J

v^2 = 4.32 * 10E-16 / 1.67 * 10-27 = 2.59 * 10^11

v = 5.09 * 10^5 m/s

8 0
3 years ago
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