In a nuclear accident such as occurred at Chernobyl, the long-term biological damage is caused by
A) nuclear fusion occurring within the biological cells.
B) the thermal energy produced by radioactive decay within biological cells.
C) alpha, beta, and gamma particles passing through biological cells.
D) nuclear fission occurring within the biological cells.
E) the high energy vibrations of the water molecule that are caused by radioactive isotopes.
C
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If you drove day and night without stopping for one year without exceeding the legal highway speed limit in the United States, the maximum number of miles you could drive would be closest to
a. 8700. b. 300,000. c. 500,000. d. 1,000,000. e. 32,000,000.
The mass density of platinum is 21.4 × 103 kg/m3. A platinum wire with a radius of 0.500 mm, 1.20 m long, fixed at both ends has a frequency of vibration for its third harmonic equal to 512 Hz. What is the tension in the wire?
A) 4.00 kN B) 2.00 kN C) 2.82 kN D) 1.41 kN E) 1.00 kN
The solar radiation curve is
A) a dent in the spherical Sun. B) the path of the Sun as it circles Earth. C) a plot of Sun's brightness versus frequency of emission. D) a plot of sunlight colors versus their frequencies. E) a plot of light intensity versus temperature of the Sun.
What is the basic definition of a black hole?
A) any compact mass that emits no light B) a dead star that has faded from view C) any object from which the escape velocity exceeds the speed of light D) any object made from dark matter E) a dead galactic nucleus that can only be viewed in infrared