Which type of rock is the easiest to date radiometrically?
A) sedimentary
B) all three types of rock are equally easy to date
C) metamorphic
D) igneous
D
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If a precipitation hardened alloy that is aged to peak strength is heated during processing to produce the part, the strength may be _________.
Fill in the blank(s) with the appropriate word(s).
The figure shows the speedometer readings as a car comes to a stop. Solve graphically for the acceleration at t = 7.0 s.
A. 2.5 
B. - 2.5
C. - 2.0
D. 2.0
The more baryons there are in the universe (a higher density of baryonic matter), the lower the ratio of deuterium to hydrogen is. Therefore, if Harry measures a higher ratio of deuterium to hydrogen than Sally, Harry infers
A) a higher density of baryons than Sally. B) the same density of baryons as Sally. C) a lower density of baryons than Sally.
A bus is designed to draw its power from a rotating flywheel that is brought up to its maximum speed (3000 rpm) by an electric motor. The flywheel is a solid cylinder of mass 250 kg and radius 0.500 m (Icylinder = MR2/2). If the bus requires an average power of 10.0 kW, how long will the flywheel rotate?
a. 154 s c. 463 s b. 308 s d. 617 s