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Igoryamba
3 years ago
13

I need some help help

Physics
2 answers:
Alexxx [7]3 years ago
7 0
Your answer is B for this question
Semmy [17]3 years ago
4 0
I believe it’s B but I suggest u chec
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The student draws an arrow on the paper to mark the incident ray. She marks the
garri49 [273]

Answer:

Explanation:

Snell's law

1.00sin66 = nsin38

<u>n = 1.48</u>

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3 years ago
A roller coaster travels 41.1 m at an angle of 40.0°
Iteru [2.4K]

Answer:

41.1 ÷ 40.0

Explanation:

Did you learn about Newton

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3 years ago
. Write the following in the scientific notation of 0.0000002400m ​
aleksandr82 [10.1K]

Explanation:

<h2><u>Steps </u><u>:</u></h2>
  1. <u>Move </u><u>decimal</u><u> </u><u>from</u><u> </u><u>left </u><u>to </u><u>right</u><u> </u><u>=</u><u>0</u><u> </u><u>0</u><u>0</u><u>0</u><u>0</u><u>0</u><u>0</u><u>2</u><u>4</u><u>0</u><u>.</u><u>0</u>
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<u>hope</u><u> it</u><u> </u><u>help</u>

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7 0
3 years ago
Ultrasound with a frequency of 4.257 MHz can be used to produce images of the human body. If the speed of sound in the body is t
shutvik [7]

Answer:

2.49 * 10^(-4) m

Explanation:

Parameters given:

Frequency, f = 4.257 MHz = 4.257 * 10^6 Hz

Speed of sound in the body, v = 1.06 km/ = 1060 m/s

The speed of a wave is given as the product of its wavelength and frequency:

v = λf

Where λ = wavelength

This implies that:

λ = v/f

λ = (1060) / (4.257 * 10^6)

λ = 2.49 * 10^(-4) m

The wavelength of the sound in the body is 2.49 * 10^(-4) m.

4 0
3 years ago
Which of the following statements is true of the strong nuclear force?
vredina [299]

Explanation:

it holds protons and neutrons together

5 0
3 years ago
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