Assume a proton in a 1-dim box of width 3.0 fm is in its 1 st excited state. (a) What is its "kinetic" energy (in eV)? (b) How close (fm) to the wall of the "box" is the probability density a maximum?
What will be an ideal response?
(a) 91. MeV
(b) 0.75 fm
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Describe three ways in which astronomers can distinguish between interstellar absorption lines and stellar absorption lines
What will be an ideal response?
Why does Ptolemy include epicycles in his model?
What will be an ideal response?
In a thermodynamic process, the internal energy of a system in a container with adiabatic walls decreases by 800 J. Which statement is correct?
a. The system lost 800 J by heat transfer to its surroundings. b. The system gained 800 J by heat transfer from its surroundings. c. The system performed 800 J of work on its surroundings. d. The surroundings performed 800 J of work on the system. e. The 800 J of work done by the system was equal to the 800 J of heat transferred to the system from its surroundings.
Where does a tsunami usually occur?
A) transform—fault boundary B) underwater reverse fault C) divergent boundary D) continental—continental convergent boundary