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Unformatted text preview: 4 atom (includes the electrons) = 3.724 GeV. The weight of the sample of He 4 would then be 4 kG 3.724/3.752 = 3.970 kg Problem 52 : (Sort of Like Problem 30.12) What dose of radiation in Grays would heat a sample of water 1 o C ? (a) 84 Gy; (b) 119 Gy; (c) 213 Gy; (d) 1 Gy; (e) 4186 Gy. What do you know? One Gray is a dose of 1 J/kg. To heat water 1 O C requires 1 calorie = 4.186 J per gram. So we would need 4,186 Gy to heat 1 kg of water by 1 O C....
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- Spring '04