1. Describe a situation in which you might need to convert the units of a measurement, and what information you would need to do so.

Nitrogen (n), phosphorus (p), and potassium (k) are the main nutrients in plant fertilizers. according to an industry convention, the numbers on the label refer to the mass percents of n, p2o5, and k2o, in that order. calculate the n: p: k ratio of a 30: 10: 10 fertilizer in terms of moles of each element, and express it as x: y: 1.0.

Which characteristics can be used to differentiate star systems? check all that apply.

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?