PLEASE HELP A 28-gram rubber stopper is attached to a string and whirled clockwise in a horizontal circle with a radius of 0.8 m. The diagram below represents the motion of the rubber stopper. The stopper maintains a constant speed of 2.5 m/s. Calculate the centripetal force acting on the rubber stopper. 1. 219 N
2. 88m
3. 0.22 N
4. 0.07 N

Which quantities are scalars? choose all that apply a.distance b.speed c. acceleration d.velocity

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

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?