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I know physics equations must be memorized, but do we also need to memorize constants, for example the gravitational or coloumb's law constant, or will they be given? Thanks
Constants
- Thread starter bluemamba7
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No need to memorize constants. 🙂 Cheers!
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Hi @bluemamba7 -
Agreed that you don't have to learn constants like big G (gravitational constant), k in Coulomb's law, etc. However, there are some commonly encountered values that you should be familiar with, like c = 3.0 x 10^8 m/s, g (acceleration due to gravity at Earth's surface) = 9.8 (or 10 for MCAT purposes) m/s^2, Avogadro's number (6.02 x 10^23 atoms/molecules per mole), pH of a neutral solution = 7 at 25°C, Kw (autoionization constant of water) = 1 x 10^-14 at 25°C (which is the basis of pH + pOH = 14). By the time you've done a reasonable amount of practice problems, these will all probably be second nature 🙂.
Agreed that you don't have to learn constants like big G (gravitational constant), k in Coulomb's law, etc. However, there are some commonly encountered values that you should be familiar with, like c = 3.0 x 10^8 m/s, g (acceleration due to gravity at Earth's surface) = 9.8 (or 10 for MCAT purposes) m/s^2, Avogadro's number (6.02 x 10^23 atoms/molecules per mole), pH of a neutral solution = 7 at 25°C, Kw (autoionization constant of water) = 1 x 10^-14 at 25°C (which is the basis of pH + pOH = 14). By the time you've done a reasonable amount of practice problems, these will all probably be second nature 🙂.
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