Answers: 1
Chemistry, 21.06.2019 23:30
Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? a. the balloons both rise. the cold balloon is larger than the warm balloon. b. the balloons rise at the same rate. both balloons are the same size. c. the warm balloon expands and rises. the cold balloon shrinks and sinks. d. the cold balloon expands and rises. the warm balloon shrinks and sinks.
Answers: 2
Chemistry, 22.06.2019 13:00
Imagine that you push on a large rock. at what point does your effort change the rockβs mechanical energy?
Answers: 1
Chemistry, 23.06.2019 02:00
The point along a planet's orbit where it is closest to the sun is called the
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Chemistry, 23.06.2019 15:00
The atoms in a have a definite volume, but move quickly enough to overcome the forces of attraction between them. a. solid b.liquid c.gas
Answers: 2
Give a scenario in which a good conductor in heat would come in handy....
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