6.A. The following is a nuclear equation for which type of decay process? (1 point)

B. Describe this type of decay process. What are the other two types of decay? How are the types of decay different? (4 points)

C. What is the name for the length of time of a decay process? How can this be used to calculate the amount of a radioactive element, compared to its original amount? (4 points)

7.A. Describe Einstein's famous equation, E = mc2, using two well-known conservation laws. Give an example of when you would use this equation. (4 points)

B. Describe fission and fusion. Explain how Einstein's equation relates to the concepts of fission and fusion. (5 points)

8. Describe an alternative energy source that involves the earth. (2 points)

Clothing made of several thin layers of fabric with trapped air in between, often called ski clothing, is commonly used in cold climates because it is light, fashionable, and a very effective thermal insulator. so it is no surprise that such clothing has largely replaced thickand heavy old-fashioned coats. (a) consider a jacket made of five layers of 0.1-mm-thick synthetic fabric (k = 0.13 w/m·°c) with 1.5-mm-thick air space (k = 0.026 w/m·°c) between the layers. assuming the inner surface temperature of the jacket to be 28°c and the surface area to be 1.25 m2, determine the rate of heat loss through the jacket when the temperature of the outdoors is 0°c and the heat transfer coefficient at the outer surface is 25 w/m2·°c. (b) what would your response be if the jacket is made of a single layer of 0.5-mm-thick synthetic fabric? what should be the thickness of a wool fabric (k = 0.035 w/m·°c) if the person is to achieve the same level of thermal comfort wearing a thick wool coat instead of a five-layer ski jacket?

The mantle is made up of which structural zones?

Which component of the earth’s atmosphere is decreased due to photosynthesis?