Apond is frozen over with a layer of ice 1.4 cm thick. the water under the ice is at 0∘c. the temperature of the air above the ice is −15∘c. this difference in temperature causes heat to flow through the ice from the water below to the air above. as heat is removed from the water, it freezes, adding to the thickness of the layer of ice. at what rate does the thickness of the ice layer increase? give the answer in centimeters per hour. you only need to consider the freezing of the water. you may neglect any additional cooling of the ice to temperatures below 0∘c.

Which statement correctly describes the relationship between frequency and wavelength?

20. threshold braking in the vehicle's braking system occurs when a. the brake pedal is pushed, heel on floorboard, with full foot pressure. b. the brakes are exerting full braking power, without traction loss. c. the driver begins pushing down the brake pedal, with moderate slowdown. d. the brakes just begin to take hold with a gradual slowdown.

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