Intense and blinding light that reduces visibility

For large mass number nuclei which are stable, the ratio of protons to neutrons is

a. equal to 1 b. greater than 1 c. less than 1 d. unrelated to the stability of nuclei e. almost 2 to 1

This graph shows that the orbit of a binary pulsar is decaying just as general relativity predicts it should (notice the agreement between data and theory). What is the significance of this particular result?

A) It supports the prediction that orbiting stars will radiate energy outward in the form of gravitational waves. B) It tells us that time runs slower in this binary system than on Earth. C) It confirms that gravitational lensing can really occur. D) It shows that general relativity can explain all known natural phenomena.

What is the orbital radius of the excited state in the Bohr model of the hydrogen atom? The ground-state radius of the hydrogen atom is 0.529 × 10-10 m

A) 0.477 nm B) 0.159 nm C) 0.382 nm D) 0.549 nm

Motor 1 does 30 J of work in 10 s, motor 2 does 2 J of work in 5 s, motor 3 does 7 J of work in 2 s, and motor 4 does 7 J of work in 3 s. List the motors in order of highest power produced to lowest power produced

a. 2, 4, 1, 3 b. 3, 4, 1, 2 c. 1, 3, 4, 2 d. 3, 1, 4, 2