Suppose a gust of wind has carried a 44-μm-diameter dust particle to a height of 310 m. if the wind suddenly stops, how long will it take the dust particle to settle back to the ground? dust has a density of 2700 kg/m3, the viscosity of 25∘c air is 2.0×10−5 n⋅s/m2, and you can assume that the falling dust particle reaches terminal speed almost instantly.

Avehicle has an oil leak that is causing the entire oil pan to be wet, but inspection reveals no exact source after cleaning off the oil residue. technician a says to install a fluorescent dye in the crankcase and operate the engine, then re-inspect for leaks with a special light (black light). technician b says the oil leak may be coming from a source at the top of the engine, such as a valve cover gasket. who is correct?

Scout feels ill one day before school. her mother puts a thermometer in her mouth and the temperature begins to climb to 100°f. what is happening between the cooler thermometer and scout's body? a) scout's body is applying a force to the particles in the thermometer. b) kinetic energy is being transferred from her mouth to the thermometer. c) potential energy is being lost by the thermometer and gained by scout's body. d) the potential energy stored in foods is converted to mechanical energy to raise the mercury in the thermometer.

Why are graphs useful when interpreting data