Relative dating tells us the
A) time gaps that occur during deposition.
B) age of rock layers.
C) sequence of rock layers—which formed first, second, and last.
D) actual date of formation for a rock layer.
Answer: C
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The force that propels a cannonball when fired from a cannon is
A) huge compared to the recoil force on the cannon. B) equal and opposite to the force the ball exerts on the cannon. C) in some cases, equal and opposite to the force the ball exerts on the cannon.
Which of the following most likely explains why Jupiter's interior releases so much heat?
A) Jupiter is gradually contracting in size. B) heat from radioactive decay C) a slow rate of nuclear fusion in Jupiter's core D) tidal heating
If the work function of a metal surface is 2.20 eV, what frequency of incident light would give a maximum kinetic energy of 0.25 eV to the photoelectrons ejected from this surface?
(1 eV = 1.60 × 10-19 J, h = 6.626 × 10-34 J ? s) A) 2.05 × 1014 Hz B) 1.02 × 1014 Hz C) 2.50 × 1014 Hz D) 3.53 × 1014 Hz E) 5.92 × 1014 Hz
A baseball thrown from the outfield is released from shoulder height at an initial velocity of 39.2 m/s at an initial angle of 30.0° with respect to the horizontal. What is the maximum vertical displacement that the ball reaches during its trajectory?
a. 11.0 m c. 22.1 m b. 19.6 m d. 44.1 m