The best way to reduce your radiation dose from a Co-60 gamma emitting source is to _______
a. reduce the temperature of the source
b. move twice as far away
c. spend half the time near the source
d. double the thickness of wood between you and the source
e. nonsense! You cannot change the potential dose
b
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Which of the following is not considered a fundamental particle?
A) an electron B) an up quark C) a neutrino D) a proton
The fastest we could accelerate a nuclear-powered rocket to is approximately
A) 50% of the speed of light B) 0.001% of the speed of light C) 0.1% of the speed of light D) 10% of the speed of light
A seismograph could register P but not S waves from an epicenter on the opposite side of the Earth
Indicate whether the statement is true or false
A radioactive isotope has a half-life of one month. At the end of one month, the amount of the original isotope still remaining is
1) none, 2) one-quarter, 3) one-half, 4) three-fourths, and at the end of two months, the amount of original isotope remaining is 5) none. 6) one-fourth. 7) one-half. 8) three-fourths.