Physics, 19.05.2021 18:30 jungcoochie101
Which describes how chemical changes are different from physical changes?
(a) Chemical changes can be measured, but physical changes cannot. (b)Chemical changes involve the formation of a new substance. (c)Chemical changes release energy, but physical changes absorb energy.
(d) Chemical changes cannot be caused by oxygen.
Answers: 3
Physics, 21.06.2019 17:20
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Physics, 21.06.2019 23:50
Any color picture tube and electric field exerts a net force of magnitude 1.68x 10^-13 n on an electron the rest mass of an electron is 9.11 x 10^-13 what is the electron acceleration?
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Physics, 22.06.2019 02:30
Power can be defined as a. the distance over which work was done. b. how much work can be done in a given time. c. all the work in an given area. d. the energy required to do work.
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Physics, 22.06.2019 08:50
You are a sales representative for a company that makes a new alternate fuel for vehicles. you have prepared a presentation for the environmental engineers to sell your new product. what question do you expect the audience to ask regarding whether the new fuel will cause less damage to the environment? a. do we have to change any parts of the vehicle to use this alternate fuel? b. will the vehicles get better fuel mileage with the alternate fuel? c. how much greenhouse gas does your fuel produce compared with current fuel sources? d. is the alternate fuel more expensive than fossil fuel?
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Which describes how chemical changes are different from physical changes?
(a) Chemical changes can...
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