Chapter 4 - Fundamentals of Quantum Mechanics

Question 1

Why don’t large objects behave like a wave?

Answer 1

• since h is very small, there is only wave-like behaviour when p is small
• p=mv therefore mass must be small and only subatomic particles are small enough

Question 2

traveling waves

Answer 2

repeating and periodic disturbances that travel from one location to another

Question 3

true or false: waves transport matter

Answer 3

false. waves transport energy, not matter

Question 4

transverse waves

Answer 4

oscillate in direction perpendicular to its direction of motion

Question 5

frequency

Answer 5

of complete cycles of a wave that transmit per unit time

Question 6

standing wave

Answer 6

wave bound on either side, stationary

Question 7

node

Answer 7

point on standing wave where oscillation amplitude=zero

Question 8

wavelength formula

Answer 8

2L/n

Question 9

what is n for the ground state

Answer 9

1

Question 10

heisenberg uncertainty principle

Answer 10

impossible to know with zero uncertainty both the position and momentum of microscopic particle at same time

Question 11

quantized

Answer 11

concept that a physical quantity can have only certain discrete values

Question 12

zero-point energy

Answer 12

difference between ground state energy and zero

Question 13

superposition

Answer 13

wavefunction resulting from interference