Which of the following statements is true?
A) a molecule is the smallest existing particle
B) chemical elements are made up of about 100 distinct molecules
C) molecules form atoms that determine chemical properties of a substance
D) molecules are the smallest subdivision of matter that still retain a substance's chemical properties
E) none of the above
Answer: D
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A. 0.70c B. 1.4c C. 0.82c D. 0.94c E. 0.98c
Newton's law of gravitation applies to all ______________
Fill in the blank(s) with the appropriate word(s)
Angular and Linear Quantities: An electrical motor spins at a constant 2695.0 rpm. If the rotor radius is 7.165 cm, what is the linear acceleration of the edge of the rotor?
A. 5707 m/s2 B. 281.6 m/s2 C. 572,400 m/s2 D. 28.20 m/s2
Lenz's Law: According to Lenz's law, the induced current in a circuit always flows to oppose the external magnetic field through the circuit.
A. True B. False