Humans can hear frequencies as low as 21 Hz. If sound is measured during 3 seconds how many wavelengths pass?

Why is genetic stability important?

Describe how Bohr's model used the work of Maxwell.

A particle falling at its terminal speed vterm is in dynamic equilibrium with no net force. Use Newton's second law for this particle falling in the presence of a downward electric field of strength E, to find an expression for vterm.

Is it possible for an atom to have an electric charge?

How much heat is needed to raise the temperature of 200 g of lead (c = 0.11 kcal/kg ∙ °c) by 10 c°?

Explain how birthrates and death rates influence the size of population.

What happens to the resistance of a wire as its length increases? A. The resistance decreases. B. The resistance is not affected by a change in wire length. C. The resistance alternates between high and low values. D. The resistance increases.

What is true about molecular compounds that dissolve in water

What is a lenticular (S0) galaxy? A galaxy with a disk and central bulge like a spiral galaxy, but with no spiral arms A galaxy with a smooth brightness profile, lacking the central bulge and disk of a spiral galaxy A spiral galaxy with fuzzy and

Which process causes wells on land to become saline, making them unusable for drinking water? A. Erosion B. Echo sounding C. Eutrophication D. Groundwater infiltration