Of the following energies for photons, which is the least energy that could result in photoelectron production if the work function is 1.60 eV?
a. 1.50 eV
c. 2.90 eV
b. 6.01 eV
d. 3.50 eV
C
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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
An Earth satellite in an elliptical orbit travels slowest when it is
A) nearest the Earth. B) farthest from the Earth. C) neither of these
A thermally isolated system is made up of a hot piece of aluminum and a cold piece of copper; the aluminum and the copper are in thermal contact. The specific heat of aluminum is more than double that of copper
Which object experiences the greater temperature change during the time the system takes to reach thermal equilibrium? A) The copper experiences a greater temperature change. B) The aluminum experiences a greater temperature change. C) Neither; both objects experience the same magnitude temperature change. D) It is impossible to tell without knowing the masses. E) It is impossible to tell without knowing the volumes.
When five equal positive charges are uniformly spaced along the x-axis, the force on the next to last charge on the right is directed
A) to the right. B) possibly in the negative y-direction. C) zero. D) possibly in the positive y-direction. E) to the left.