Physics, 02.07.2021 06:30 madisonanders
Which of the following BEST describes the difference between a physical and a chemical change?
O Physical change involves energy change while a chemical change does not.
O Chemical change involves energy change while a physical change does not.
New substances are formed after a chemical change but not after a physical change.
New substances are formed after a physical change but not after a chemical change.
Answers: 3
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The focal length of a relaxed human eye is approximately 1.7 cm. when we focus our eyes on a close up object, we can change the refractive power of the eye by about 16 diopters. (a) does the refractive power of our eyes increase or decrease by 16 diopters when we focus closely? explain. (b) calculate the focal length of the eye when we focus closely.
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Which of the following BEST describes the difference between a physical and a chemical change?
O Ph...
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