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Problem 45 Medium Difficulty

A person whose mass is 75.0 kg is exposed to a whole - body dose of 25.0 rad. How many joules of energy are deposited in the person’s body?

Answer

18.8 \mathrm{J}

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Top Physics 103 Educators
Christina K.

Rutgers, The State University of New Jersey

Andy C.

University of Michigan - Ann Arbor

Zachary M.

Hope College

Meghan M.

McMaster University

Video Transcript

For Number 45 we have a 75 kilogram person that's exposed to 25 red Dose, and we wonder what energy their body absorbs. Well, if we just think of what the definition of rad is, a red is, um, yet tender and later to Jules into each kilogram. So I have 25 red, so I can think of this is 25 red. This tells me that there's 10 to the negative to Jules. It's red per kilogram. That's what that definition is telling me, basically. So now if I just multiply that by the number of kilograms I have. If this works out, Red cancels, Kilogram cancels and I've calculated how much energy I got. 18.75 jewels. So it's just based on the definition of rat.

University of Virginia
Top Physics 103 Educators
Christina K.

Rutgers, The State University of New Jersey

Andy C.

University of Michigan - Ann Arbor

Zachary M.

Hope College

Meghan M.

McMaster University