Which is an example of a chemical reaction?
a: paper folded into tiny pieces
b:...
Physics, 31.01.2020 17:45 PONBallfordM89
Which is an example of a chemical reaction?
a: paper folded into tiny pieces
b: paper burned and turned into smoke
c: paper soaked in water
d: paper shredded and turned into pulp
Answers: 3
Physics, 21.06.2019 14:30
Several processes form metal ore. match each process to its description. volcanic activity weathering hydrothermal energy rocks break down as they interact with air and water. arrowright density differences and other factors cause metals to concentrate in igneous rocks. arrowright seawater heats up from contact with hot rock, and metals dissolve in it. the water rises and contacts cooler water, causing metal ores to settle on the ocean floor. arrowright
Answers: 2
Physics, 21.06.2019 22:10
Ascrew incorporates which other simple machine? lever wheel and axle inclined plane pulley
Answers: 3
Physics, 22.06.2019 00:50
Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 10.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.90 m/s; (b) he is then lifted at the constant speed of 4.90 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 68.0 kg rescue by the force lifting him during each stage?
Answers: 1
Physics, 22.06.2019 09:00
One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form
Answers: 1
Computers and Technology, 12.03.2020 20:21
Computers and Technology, 12.03.2020 20:21
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