Heavy duty springs are always installed on the ground at the bottom of the shaft underneath an elevator to provide last-minute rescue. (if you have a chance, take a look at our school elevator, you'll see them located on the ground at b level). in a "worst-case" design scenario, a 1550 kg elevator with broken cables is falling at 8.60 m/s just before it starts compressing a cushioning spring at the bottom. the spring is supposed to stop the elevator, compressing 26.0 cm as it does so.

find the spring constant. ignore air resistance and friction in the elevator guides.

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

In automobile steering wheel is shown what is the ideal mechanical advantage blank? if the ama is eight what is the efficiency of the steering wheel?

Consider a hydrogen atom in the ground state. what is the energy of its electron? =e= jj now consider an excited‑state hydrogen atom. what is the energy of the electron in the =5n=5 level? =e5= j