A barrel floats down a river past two flags that are 100 meters apart. The time it took for the barrel to pass each flag is shown. What is the speed of the stream’s current? 1075AQ2
A. 0.28 m/s
B. 2.2 m/s
C. 2.4 m/s
D. 3.6 m/s

Which actions would increase the rate at salt dissolves in water? stir the water? crush the salt? use less water? heat the water? cool the salt

When would a bouncy ball have the most potential energy

Which of the following describes a compound? (hint: carbon and oxygen bo a. a piece of pure carbon, containing only carbon atoms b. oxygen gas surrounding a solid piece of carbon c. a substance made of two oxygen atoms for each carbon atom carbon and oxygen atoms mixed without being bonded together