Physics, 07.10.2019 02:30 emilyblaxton
Sort the examples based on whether they describe a physical change or a chemical reaction?
growth of a seed into
a seedling/wax melting from
applied heat/making caramel by
burning sugar/tarnishing of silver/grinding wheat to
make flour/adding copper with gold
to make jewelry
Answers: 2
Physics, 22.06.2019 05:30
Explain how the energy of rubber ball is tranforned as it roll down a ramp. give evidence that the energy of the og the ball remains the same at all points on the ramp
Answers: 2
Physics, 22.06.2019 12:00
In a set amount of time, a battery supplies 25j of energy to an electric circuit that includes two different loads. one of the loads produces 10 j of heat energy during this time interval. how much heat energy is produced by the second load in this time? explain your answer
Answers: 3
Physics, 22.06.2019 16:40
On your wedding day your lover gives you a gold ring of mass 3.67 g. 48 years later its mass is 3.44 g. on the average how many atoms were abrated from the ring during each second of your marriage? the atomic mass of gold is 197 u. don't enter units
Answers: 1
Physics, 22.06.2019 17:30
Does heating a metal wire increase or decrease its electrical resistance? why?
Answers: 1
Sort the examples based on whether they describe a physical change or a chemical reaction?
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