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Consider the decay of radioactive substances in the Earth’s interior. The energy emitted is converted to thermal energy that reaches the earth’s surface and is radiated away into cold dark space. Construct a problem in which you estimate the activity in a cubic meter of earth rock? And then calculate the power generated. Calculate how much power must cross each square meter of the Earth’s surface if the power is dissipated at the same rate as it is generated. Among the things to consider are the activity per cubic meter, the energy per decay, and the size of the Earth.

a) $\frac{0.9 \times 10^{-30} q}{p} \frac{1}{\mathrm{s} \cdot \mathrm{cm}^{3}}$b) $\left(1.6 \times 10^{-13}\right) q \mathrm{W}$c) $\left(1.6 \times 10^{-13}\right) q \mathrm{W}$

Physics 103

Chapter 31

Radioactivity and Nuclear Physics

Nuclear Physics

Cornell University

Hope College

University of Sheffield

University of Winnipeg

Lectures

02:26

In physics, nuclear physic…

08:29

In physics, nuclear proper…

02:57

Nuclear Energy Nuclear ene…

06:30

Two radioactive materials …

07:39

Consider a system of nucle…

05:47

The alpha-emitter plutoniu…

02:10

The radioactive element ra…

06:00

01:53

The average rate at which …

07:11

(a) Calculate the energy r…

02:47

00:39

For Exercises $2-4,$ use t…

02:49

Construct Your Own Problem…

06:29

Energy reaches Earth from …

04:57

According to one estimate,…

09:01

Large amounts of depleted …

06:53

06:22

00:47

(I) How much energy is rel…

04:21

02:23

$\cdot$ Meteor crater. Abo…

01:50

The thermal energy generat…

Hello friends in this problem. Give it first, find the activity off a rock off the art mhm cubic meter B but calculate the power generated See part. Also calculate how much power must cross each square meter off the Earth's surface if the rate off generation off power is equal to rate off. Dissipation off power. Give it heat energy admitted. But unit from art surface is sure make a recommend. Bold per second, an incident so and the interior off earth, the omitting health A particle energy p mega local boot. Let us see a resolution for part a energy the heat radiated he's got took to upon bottom off earth. So he's called Toe Shoe Meghan composed upon for my three pi r cubed. Here are his release of the art This is Alphabet. Toby used a small, so cute maker and a clean bowled per second upon four by three pipe 6380 kilometer Cube so we can write nine. I'm sorry. Que, upon 1.9 20 to the power continual mega weapon bowl per second permitted you the activity off Arthur Rock. Our is full toe. He upon a lot. He is you diverted by 1.9 10 to the power. Don't even mega weapon gold per second. 1 m. You divided by be mega. So it is to be 0.9 and took 10 to the power minus. Continue for two upon P. Perp metered you per second now Second power power generated. We have to calculate the power is called toe shoe Megaupload board Per second. That is 1.6 in tow. 10 to the power minus 13. Cure what? See the power process? Yeah, but unit Meter Cube is please be upon. Yeah, substitute that. They're so thanks for watching it.

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