Layers of the earth review sheet 2018.pdf
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What is the momentum of a 2 kg object moving at 15 meters per second

This is the number of complete movements of a wave per second.

Aprotein molecule in an electrophoresis gel has a negative charge. the exact charge depends on the ph of the solution, but 30 excess electrons is typical. what is the magnitude of the electric force on a protein with this charge in a 1600n/c electric field? write in two significant numbers, and also in newton