The maximum permissible workday dose for occupational exposure to radiation is 18 mrem. A 54 kg laboratory technician absorbs 2.6 mJ of 0.3 MeV gamma rays in a work day. The relative biological efficiency (RBE) for gamma rays is 1.00
The ratio of the equivalent dosage received by the technician to the maximum permissible equivalent dosage is closest to: A) 0.27
B) 0.29
C) 0.32
D) 0.35
E) 0.37
A
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Series/Parallel Circuits: Two resistors with resistances of 5.0 ? and 9.0 ? are connected in parallel. A 4.0-? resistor is then connected in series with this parallel combination. An ideal 6.0-V battery is then connected across the series-parallel combination. What is the current through (a) the 4.0-? resistor and (b) the 5.0-? resistor?
What will be an ideal response?
A 1.5m long dowel (a cylindrical rod) is pivoted about the end so that it is a pendulum of sorts - it can freely swing in a vertical plane. The dowel has a diameter of 2.0cm, and its density is 3.2 
When it is positioned in its swing such that its angle with the vertical is 22.5 degrees, what is the torque on the rod about the pivot due to its weight?
A. 17Nm B. 42Nm C. 11Nm D. 10Nm E. 44Nm F. 41 Nm
From center to surface, which of the following correctly lists the interior layers (defined by density) of a terrestrial world?
A) core, mantle, crust B) mantle, core, crust C) mantle, crust, core D) core, crust, lithosphere
Consider two copper wires of equal cross-sectional area. One wire has 3 times the length of the other. How do the resistivities of these two wires compare?
A) The longer wire has 9 times times the resistivity of the shorter wire. B) The longer wire has 27 times times the resistivity of the shorter wire. C) The longer wire has 3 times the resistivity of the shorter wire. D) Both wires have the same resistivity.