Chemistry, 06.12.2019 22:31 jaylanwest12
Two students design an experiment to see if pushing or pulling a box across the floor is more effective. the first student pushes the box across the floor a distance of 20 feet and the second student times how long it takes. next they switch roles and the second student pulls the same box across the floor instead of pushing. they repeat this 5 times. which statement best describes the design of this experiment? a) this is a well design experiment. b) this experiment is not well design because 20 feet is too long a distance. c) this experiment is not well design because they should not repeat it 5 times. d) this experiment is not well design because they should not switch roles during the experiment.
Answers: 2
Chemistry, 22.06.2019 14:30
How do temperature and salinity affect deepwater currents? as temperatures and salinity levels of water increase, the water rises to the surface where it creates currents as it moves to colder regions. they create changes in wind direction, moving denser water in the same direction as the wind and causing the deepwater circulation patterns found in the ocean. they equalize the forces on undersea currents caused by the coriolis effect as they replace more dense water with less dense water. they create density differences that cause dense deepwater currents to flow toward the equator where they displace less dense, warmer water above them.
Answers: 2
Chemistry, 22.06.2019 15:00
Large helium-filled balloons are used to lift scientific equipment to high altitudes. what is the pressure inside such a balloon if it starts out at sea level with a temperature of 10.0ºc and rises to an altitude where its volume is twenty times the original volume and its temperature is – 50.0ºc ?
Answers: 2
Two students design an experiment to see if pushing or pulling a box across the floor is more effect...
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