Answer:
Explanation:
The relation between frequency and wavelength is shown below as:
c is the speed of light having value
Given, Wavelength = 515 nm
Also, 1 m =
nm
So,
Wavelength =
m
Thus, Frequency is:
Answer:
Bro what is this math or something
Explanation:
Solve these problems like weighted averages:
The first one:
Multiply the masses (isotope numbers) by the decimal form of the percentage. Add them
0.076 (6) + 0.924 (7) = 6.924
The second one:
0.2 (10) + 0.8 (11) = 10.8
If you think about it, these answers make sense. 6.924 is much closer to 7 than to 6 (since there's a lot more lithium-7 than there is lithium-6). 10.8 is closer to 11 than to 10.
A chemical property is any of a material's properties that becomes transformed during and after a chemical reaction occurs. Some common examples of chemical properties are; flammable products, toxicity, and heat of combustion.
Hope I could help! :)
Answer:
2.24 x 10^3
Explanation:
When writing in scientific notation, you need to simplify the subject till there's only one digit on the left of the decimal point, so in this problem you had to move the decimal point over two more places.
It has already been moved once, shown by the 10^1, so you add 2 to the 10^1 to get 10^3.