Why would the English system of units be more useful if a foot contained 10 inches?
What will be an ideal response?
Because our number system is base-10, having units based on 10 simplifies calculations. Fractions could be expressed in decimal notation. Prefixes could be used, such as milli-, centi-, kilo- to express lengths of varying orders of magnitudes.
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Parallel-Plate Capacitor: Two parallel square metal plates, 8.4 cm on each side, are 2.5 mm apart and carry equal but opposite charge uniformly distributed over their facing surfaces. How much excess charge is there on each plate if the electric field between the plates has a magnitude of 2.0 × 106 N/C? (k = 1/4??0 = 8.99 × 109 N ? m2/C2)
Fill in the blank(s) with the appropriate word(s).
A black hole can be created in a(n) ________, even more violent than supernovae
Fill in the blank(s) with correct word
Today most scientists favor the capture theory of the Moon's origin, since it would explain why the Moon still orbits in the ecliptic plane, as do other planets
Indicate whether the statement is true or false
Only photons with wavelengths _____ can ionize hydrogen
A) shorter than 91.2 nm B) longer than 104.3 nm C) shorter than 40 nm D) longer than 80 nm