3 years ago

Which statements describe the wave? Check all that

Physics

1 answer:

Olin [163]3 years ago

4 0

Answer:the wave is an electromagnetic wave.

Explanation:

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OLga [1]

3260÷4=815 which is you average seed

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A power plant produces 1000 MW to suply a city 40Km away.Current flows from the power plant on a single wire of resistance0.050

Westkost [7]

Answer:

The current in wire resistance 2Ω

a). 8696 A

b). fraction power 15.1% a 115kV

Explanation:

Resistance

$R=0.05$ Ω/Km*40km

R=2Ω

P=1000 MW

a).

$P=V*I\\I=\frac{P}{V}=\frac{1000x10^{6}W}{115x10^{3}k } =8696.65A$

Using law ohm

b).

$V=I*R\\I=\frac{V}{R}$

$P=I*I*R\\P=I^{2} *R\\P=8696.65^{2}*2\\P=151.228 x10^{6} W$

$e=\frac{151.228x10^{6} }{1000x10^{6} }*100= 15.12$ %

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3 years ago

electromagnetic waves of wavelengths 1,34nm are emitted. how much energy do photons of this light have

Sergio039 [100]

Answer:

$energy = \frac{planck \: const.\: \times speed \: of \: light}{wavelength}$

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2 years ago

The Hertzsprung-Russel diagram is used to show the relationship between which two characteristics of stars?

Dahasolnce [82]

Answer:

Explanation:

absolute magnitude and luminosity vs the spectral position/ temperature

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3 years ago

Need help on this one

IgorC [24]

Answer:

Inversly or Indirectly

Explanation:

the voltage (V) and inversely proportional to the resistance (R).

Hope it helps!

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