The magnitude of the spin magnetic dipole moment μs of an atom is (μβ is the Bohr magneton, and s is a positive number): A. μβ, B. μβ s, C. μβ√(s(s+1)), D. 2 μβ√(s(s+1), E. 2 μβ s . The answer is: D

Three point charges, two positive and one negative, each having a magnitude of 20 μc are placed at the vertices of an equilateral triangle (30 cm on a side). what is the magnitude of the electrostatic force on the negative charge

Ais not a compound machine. a. bolt b. shovel c. handcart (dolly) d. see-saw (teeter totter)

True or false: the revolution of the earth creates day and night as it rotates around the sun