If 100 people are exposed to a total (collective) dose of 1 sievert, there will probably be 4 cancers experienced among the people in this group, not four as is asserted
What will be an ideal response?
Table 20.8 says that there will probably be 1 cancer per 100 Sv. So, the collective
dose of 100 person-sieverts will probably lead to a single cancer in this group.
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Describe Couette flow
What will be an ideal response?
That Mercury has a large iron core is evidenced by
a. the large lobate scarps. b. the large mean density of Mercury. c. the lava flows near Caloris Basin. d. all of the above e. none of the above
The pattern of hot convective cells rising in the photosphere is called
A) aurora. B) prominences. C) granulation. D) flares. E) sunspots.
A uniform rod (mass = 1.5 kg) is 2.0 m long. The rod is pivoted about a horizontal, frictionless pin through one end. The rod is released from rest in a horizontal position. What is the angular speed of the rod when the rod makes an angle of 30° with the horizontal? (The rotational inertia of the rod about the pin is 2.0 kg/m2)
a. 2.2 rad/s b. 3.6 rad/s c. 2.7 rad/s d. 3.1 rad/s e. 1.8 rad/s