1) Which of the following is the best definition of the scientific method? A: A method used by scientists to try and find the answers to questions.
B: Used by scientists only throughout the world.
C: A method to prove the right answer to a question by a scientist.
D. The steps scientists use and follow when trying to solve a problem or to prove or
disprove a theory

Against his financial advisor's advice, frank has decided to invest his money in some risky stocks because he once made quite a bit of money in the stock market. his decision illustrates a. the representativeness heuristic b. overconfidence c. the availability heuristic d. confirmation bias select the best answer from the choices provided

Uranium has two naturally occurring isotopes. 238u has a natural abundance of 99.3% and 235u has an abundance of 0.7%. it is the rarer 235u that is needed for nuclear reactors. the isotopes are separated by forming uranium hexafluoride uf6, which is a gas, then allowing it to diffuse through a series of porous membranes. 235uf6 has a slightly larger rms speed than 238uf6 and diffuses slightly faster. many repetitions of this procedure gradually separate the two isotopes. what is the ratio of the rms speed of 235uf6 to that of 238uf6? express your answer to five significant figures.

How much energy will be transferred to your eardrum while listening to this sound for 1.0 min?