Which of the following is not one of the types into which rocks are classified?
a. Igneous
b. Orthoclase
c. Metamorphic
d. Sedimentary
b
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What distinguishes quarks from leptons?
A) Quarks interact with one another via the strong force, while leptons do not. B) Quarks are usually found in isolation, while leptons combine to make larger particles. C) Quarks have integer spins, but leptons have half-integer spins. D) Quarks have no charge, while leptons do. E) "Quark" and "lepton" are names for the same type of particle.
All organisms have finite lifetimes and eventually die. Which of the basic characteristics of life corrects for this?
A) energy utilization B) response to the environment C) evolutionary adaptation D) reproduction
A body released from rest falls with an acceleration of 9.8 m/s2. If the same body is thrown upward at an angle, and air resistance is negligible, its acceleration after release will be
A. upward and equal to 9.8 m/s2. B. downward and greater than 9.8 m/s2. C. downward and less than 9.8 m/s2. D. upward and greater than 9.8 m/s2. E. downward and equal to 9.8 m/s2.
A European sports car dealer claims that his product will accelerate at a constant rate from rest to a speed of 100 km/h in 6.00 s. What distance will the sports car travel during the 6.00-s acceleration period? (Hint: First convert speed to m/s.)
a. 41.7 m b. 58.3 m c. 83.3 m d. 167 m e. 125 m