FOUNDATIONS OF ASTRONOMY-WEBASSIGN
FOUNDATIONS OF ASTRONOMY-WEBASSIGN
14th Edition
ISBN: 9780357135655
Author: Seeds
Publisher: CENGAGE L
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Chapter 8, Problem 15P

The United States consumes about 2.5 × 1019 J of energy in all forms in a year. How many years could you run the United States on the energy released by the solar flare in Problem 14?

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The sun produces energy via nuclear fusion at the rate of 4x10 J/s. Based on the proposed overall fusion equation, how long will the sun shine in years before it exhausts its hydrogen fuel? (Assume that there are 365 days in the average year.) Express your answer to one significant figure and include the appropriate units.
The US had 264 billion barrels of oil in reserve at the end of 2019. Us annual energy consumption is 1.0 x 1020 joules and energy released by burning a liter of oil is 1.2 x 107 joules. How long can the US run on its reserves? Use the conversion 1 barrel = 159 liters.
On Dec 5, 2022, scientific history was made at the Lawrence Livermore National Laboratory (LLNL) in Livermore, California when nuclear fusion was achieved when the 192 lasers deposited about 2 Megajoules (MJ) of energy into a frozen pea sized deuterium-tritium pellet and ignited the pellet through nuclear fusion to release 3 MJ of energy. The metric prefix mega means million (10^6). a) How much mass (kg) would be required to release 1 MJ of energy?

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FOUNDATIONS OF ASTRONOMY-WEBASSIGN

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