What is the wavelength of a wave with a frequency of 4.3 Hz?

Several kinds of bears are found on earth. most bears are brown or black, but one type of bear, the polar bear, is white. what process led to this difference in fur color? explain your answer.

Consider the four elements above. which one of these elements will combine with oxygen in a 1: 1 ratio?

An alloy contains 66 g of pure zinc. what is the percentage of zinc in the alloy? express your answer to two significant figures and include the appropriate units.