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Chapter 4, Review Question 2
Chapter 4, Review Question 9
Chapter 4, Advanced Question 18
Chapter 4, Advanced Question 20
Chapter 10, Review Question 2
Chapter 10, Review Question 13
A textbook weighs about 1.5 kilograms (3.3 lbs).
A.) How many Joules of energy would be released if the entire book
turned into pure energy?
B.) Compare this to the energy used by the entire city of San
Francisco in one year: roughly 7.5 x 1016 Joules. If you could
turn Mass into Energy, could you power The City for a year using one
In 1961, a hydogen fusion bomb (called Tsar Bomba)
was built and detonated in Russia with an explosive power of 57 million tons of TNT,
the largest human made explosion. The energy released
was 240 x 1015 Joules, (more than the energy of all other normal
bombs combined). How much matter was converted into energy when this bomb
What is stellar parallax, and how do astronomers us it?
The closest star to our solar system is Proxima Centauri at
a distance of 1.3 parsecs . A.) How long does it take light
from Proxima to reach the Earth? B.) By what angle, (in arc seconds)
does Proxima appear to move, with respect to the background
stars, as Earth orbits the Sun?