Arock is dropped from a sea cliff, and the sound of it striking the ocean is heard 3.2 s later. if the speed of sound is 340 m/s, how high is the cliff?

Note: the following questions are unrelated to the balmer series or the martian. refer to your course notes. a sun-sized star will spend most of its lifetime as a: white dwarf b. red giant c. protostar d. main-sequence star

Write down two additional questions about earth's magnetic field that will make your presentation more informative.

What is a view of science and psychology that says the value of knowledge depends on its usefulness? a. pragmatism b. psychotherapy c. physiology