If a cow has a mass of 9×10^2 kilograms, and a blue whale has a mass of 1.8×10^5 kilograms, which of these statements is true?
a. the blue whale has about 200 time more mass
b. the cow has about 200 time more mass
c. the blue whale has about 500 time more mass
d. there is no way to compare the masses

What are the constants in this expression? -10.6+9/10+2/5m-2.4n+3m

What are two numbers that have a sum of 15

Awavelength of 610 nm was found to be the most intense wavelength emitted by copper. answer the following questions about this wavelength of light. a) what is this wavelength in cm? b) what is the frequency that corresponds to this wavelength? c) what is the energy of light of this wavelength? d) what is the wavenumber corresponding to this wavelength?