All of these are very important parts of studying physics EXCEPT 1. describing the organization of the universe
2. understanding natural laws
3. memorizing complicated explanations
4. deducing and applying natural laws

Trumpeter a holds a b-flat note on the trumpet for a long time. person c is running towards the trumpeter at a constant velocity. person b is running away from the trumpeter at the same rate. person d is standing still the whole time. which person hears a frequency that is lower than the b-flat?

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2