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Paha777 [63]
3 years ago
13

1. A wave had a wavelength of 5m and speed of 15m/s, what is the frequency

Chemistry
1 answer:
Ilya [14]3 years ago
4 0

Answer:

Frequency is 3HZ.

Explanation:15/5 =3

Violet has more frequency

Wavelength is 340000m.

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The half-life of carbon-14 is 5,730 years. How many grams of parent material will remain from a 200-gram sample after 3 half-liv
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Answer:

The answer to your question is 25 grams

Explanation:

Data

half-life = 5730 years

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after 3 half-lives

Process

Calculate the amount of sample after one, two and three half-lives.

After each half-life, that of sample is half the previous amount.

                         Number of half-lives           Amount of sample

                                       0                                        200 g

                                        1                                         100 g

                                        2                                          50 g

                                       3                                           25 g

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