From a man on top of mountain and a man on lower land which One experiences maximum pressure.
A. a man on top of mountain C. Both
B. a man on lower surface D. None

Amachine, modeled as a simple spring-mass system, oscillates in simple harmonic motion. its acceleration is measured to have an amplitude of 5,000 mm/s with a fre- quency of 10 hz. compute the maximum displacement the machine undergoes during this oscillation.

Anybody wanna ? (picture included? )

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2