If you are driving an oscillatory system at a certain frequency, but the amplitude is much smaller than it could be, you can be certain that

1. the driving frequency is too low.
2. the driving frequency is too high.
3. the driving frequency is not matched to the natural frequency of the oscillatory system.

Aphysical change is a change in the size, shape,, or stafe of matter true or false

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ºc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in ×10^{-3} −3 m)

Aphoton is absorbed by an electron that is in the n = 3 state of a hydrogen atom, causing the hydrogen atom to become ionized. very far away from the nucleus, the released electron has a velocity of 750,000 m/s. what was the wavelength of the absorbed photon?