A stationary source S generates circular outgoing waves on a lake. Thewave speed is 5.0 m/s and the crest-to-crest distance is 2.0 m. A personin a motor boat heads directly toward S at 3.0 m/s. To this person, thefrequency of these waves is:

kepler used the data from tycho blahe (his mentor) to construct the laws of planetary motion.

report!

explanation:

physics means: "the branch of science concerned with the nature and properties of matter and energy. the subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms."

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).

3. dark matter

empty space could also be a simple vacuum