The pitch of a sound is most closely related to the

a.

frequency of vibrations.

b.

distance from the sound source.

c.

medium through which the sound travels.

d.

intensity of the sound.

Which is not true about oxygen-17 and oxygen-18?

If the ama of the inclined plane below is 2, calculate the ima and efficiency. ima = efficiency =

Aprisoner is forced to go into one of three rooms, but he can choose which room. the first room is ablaze with fire. the second one is rigged with explosives that will go off as soon as he enters. the third contains a pair of lions who haven't eaten in years. which room should he choose to survive?