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asambeis [7]
3 years ago
15

Which of the following is true about radiation from the sun?

Mathematics
1 answer:
bearhunter [10]3 years ago
6 0
This isn't a math question and should be in the science section. However, I will still answer the question. The answer is choice B.

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Here's a further breakdown

A. False. The radiation or energy from the sun can travel through air or else you wouldn't feel the sun's rays. Also, plant life wouldn't be alive without that energy going through the air.

B. True. The rays travel through a vacuum of space. If they couldn't travel through space, then the same problem comes up as in choice A: the issue of not feeling the sun's rays.

C. False. They rays have different frequencies. Because there are many wavelengths (see choice D below), this means there are different frequencies. Recall that f = 1/w where f is the frequency and w is the wavelength.

D. False. The rays are made of different wavelengths. The visible light portion is what we can see, though there is a lot more to the electromagnetic spectrum (eg: ultraviolet light). 

-------------------------------------------------------------------------------------------------------------

So once again, the answer is choice B
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Gwar [14]

Step-by-step explanation:

1. AB = BC (B is the midpoint of AC)

2. DE = EF (E is the midpoint of DF)

3. EB is common

4. ∠ABE = ∠CBE; ∠BED = ∠BEF (EB⊥AC, EB⊥DF)

5. ΔDEB ≅ ΔFEB (RHS)

6. DB = FB (corresponding ∠s of ≅ Δs)

7. ∠EFB = ∠CBF; ∠EDB = ∠ABD (alternate interior angles, AC║DF)

8. ΔABD ≅ ΔCBF (SAS)

4 0
3 years ago
Please Help!
Lisa [10]
We know that

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sin x=opposite side angle x/hypotenuse
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the answer is
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7 0
3 years ago
Which solution to the equation 1/x-1 = x-2/2x^2-2 is extraneous
melamori03 [73]

<u>Solution-</u>

The equation given here,

\frac{1}{x-1} =\frac{x-2}{2x^2-2}

\Rightarrow 2x^2-2=(x-1)(x-2)

\Rightarrow 2x^2-2=x^2-3x+2

\Rightarrow x^2+3x-4=0

\Rightarrow x^2 +4x-x-4=0

\Rightarrow (x-1)(x+4)=0

\Rightarrow x=1 \ and -4

But, at x=1, \frac{1}{x-1} \ and \ \frac{x-2}{2x^2-2} becomes infinity so it can't be a solution to the equation.

∴ x=1 is the extraneous solution of the equation

3 0
3 years ago
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LekaFEV [45]
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Cloud [144]

Answer:

45.25

Step-by-step explanation:

3 0
3 years ago
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