chem-phys

Question 1

Don’t eliminate something because you don’t recognize it.

Answer 1

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Question 2

In which situations would frequency change?

Answer 2

Frequency always remains constant. Remember than frequency changes when Energy of a photon (E=hf) changes.

Question 3

What is the equation for wavelength in an open pipe?

Answer 3

λ = 2L/n, where n is the number of the relevant harmonic

Question 4

Answer 4

Period will increase to the square root of the length. If length increases by 9cm, then the period increases by a factor of 3

Question 5

What is the velocity at the extremes of oscillation / when mass is changing directions?

Answer 5

In either a spring or a pendulum, a mass will reach a zero velocity at the extremes of its oscillation. In other words, velocity must be zero when the mass is changing directions. At these points, the mass has maximum potential and no kinetic energy.