John is participating in an experiment that is designed to determine how much brighter a light has to be before he perceives the magnitude as twice as bright as the original light. jane is participating in an experiment to determine how strong an odor has to be before she initially perceives the odor. the experiment in which john is participating relates to the question and the experiment in which jane is participating relates to the question.

Acup of coffee sits on the dashboard of an automobile. the car goes around a sharp curve. even though you hold the cup still, coffee still splashes out. this can best be explained due to a) density. b) friction. c) gravity. d) inertia.

Because air contracts as it cools, the air pressure inside a freezer is typically lower than on the outside. why do ice cubes inside a freezer tend to shrink over time? a. the ice dissolves oxygen from the air, forming a denser crystalline matrix.b. the ice reacts chemically with carbon dioxide in the air, forming gaseous carbon compounds.c. the ice melts, and then the liquid freezes as ice crystals on the bottom of the freezer.d. the ice sublimes, and then the water vapor deposits as ice crystals on the sides of the freezer.

In science and physics what is the standard unit of measure for speed?