Which one of the following statements is true concerning an object executing simple harmonic motion? (a) the object’s velocity is never zero. (b) the object’s acceleration is never zero. (c) the object’s velocity and acceleration are simultaneously zero. (d) the object’s velocity is zero when its acceleration is a maximum. (e) the object’s maximum acceleration is equal to its maximum velocity.

Most energy in an ecosystem comes originally from_

Describe the path of the electric current through a circuit?

Utah's great salt lake has an average salinity seven times higher than that of the oceans. very few multicellular organisms live in this harsh environment. an example is the brine shrimp, which must devote a large portion of its metabolic energy to osmoregulation. these brine shrimp must available hint(s)utah's great salt lake has an average salinity seven times higher than that of the oceans. very few multicellular organisms live in this harsh environment. an example is the brine shrimp, which must devote a large portion of its metabolic energy to osmoregulation. these brine shrimp must pump water back into their cells to counter its loss due to osmosisactively pump water back out of their cells to counter its inflow due to osmosissynthesize membranes that are impermeable to substances that upset osmotic balanceactively pump salt back out of their cells to counter its inflow due to osmosis