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
Question 2
A stunt pilot weighing 0.70 kN performs a vertical circular dive of radius 0.80 km. At the bottom of the dive, the pilot has a speed of 0.20 km/s which at that instant is not changing. What force does the plane exert on the pilot?
a. 3.6 kN up
b. 4.3 kN up
c. 2.9 kN down
d. 2.9 kN up
e. 5.8 kN down
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