Horizons: Exploring the Universe (MindTap Course List)
14th Edition
ISBN: 9781305960961
Author: Michael A. Seeds, Dana Backman
Publisher: Cengage Learning
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Chapter 7, Problem 7P
To determine
The mass tovanish with the explosion of 1 mega ton.
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How much mass would have to be converted to energy to get the energy of one-megaton bomb of TNT? One megaton of TNT = 4 × 10 15 Joules.
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If a 5.2 kg mass is completely converted into energy, how much energy, in joules, would be released? Compare this value to the amount of energy released when 5.2 kg of liquid water at 0°C freezes. (The latent heat of fusion of water is 3.34 ✕ 105 J/kg.)
Chapter 7 Solutions
Horizons: Exploring the Universe (MindTap Course List)
Ch. 7 - Prob. 1RQCh. 7 - What evidence can you give that granulation is...Ch. 7 - Prob. 3RQCh. 7 - Prob. 4RQCh. 7 - Prob. 5RQCh. 7 - Prob. 6RQCh. 7 - Prob. 7RQCh. 7 - Prob. 8RQCh. 7 - Prob. 9RQCh. 7 - Prob. 10RQ
Ch. 7 - Prob. 11RQCh. 7 - How can solar flares affect Earth?Ch. 7 - Prob. 13RQCh. 7 - Prob. 14RQCh. 7 - Prob. 15RQCh. 7 - Prob. 16RQCh. 7 - Prob. 17RQCh. 7 - Prob. 18RQCh. 7 - Explain why the presence of spectral lines of a...Ch. 7 - What energy sources on Earth cannot be thought of...Ch. 7 - What would the spectrum of an auroral display look...Ch. 7 - Prob. 4DQCh. 7 - The radius of the Sun is 0.7 million km. Examine...Ch. 7 - Prob. 2PCh. 7 - Prob. 3PCh. 7 - If a sunspot has a temperature of 4200 K and the...Ch. 7 - How much energy is produced when the Sun converts...Ch. 7 - Prob. 6PCh. 7 - Prob. 7PCh. 7 - Prob. 8PCh. 7 - The United States consumes about 2.51019 J of...Ch. 7 - Prob. 10PCh. 7 - Prob. 1LTLCh. 7 - Prob. 2LTLCh. 7 - Prob. 3LTL
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- The meter was redefined as a reference to Earth, then to krypton, and finally to the speed of light. Why do you think the reference point for a meter continued to change?arrow_forwardIn fact, the conversion of mass to energy in the Sun is not 100% efficient. As we have seen in the text, the conversion of four hydrogen atoms to one helium atom results in the conversion of about 0.02862 times the mass of a proton to energy. How much energy in joules does one such reaction produce? (See Appendix E for the mass of the hydrogen atom, which, for all practical purposes, is the mass of a proton.)arrow_forwardWhat is an event horizon? Does our Sun have an event horizon around it?arrow_forward
- Einstein's mass-energy equation is E=mc 2 , where mass is in kilograms and the speed of light is 3.00×108m/s. The unit of energy is the joule (4.184J=1cal;1000cal=1kcal,1J=1kg⋅m2/s2). 1) Calculate the energy released, in calories, when 1 g of matter is converted to energy, then calculate the energy released, in kilocalories, when 1 g of matter is converted to energy. 2)arrow_forwardOn 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?arrow_forwardOnly about 11% of the initial Hydrogen in the Sun is in the core where it is hot enough to burn. What was the total mass of the initial H in the core of the Sun?arrow_forward
- How much mass is released as energy in the explosion of a 4.6 megaton bomb?arrow_forwardHow much energy would be released if Earth were annihilated by collision with an anti-Earth?arrow_forwardOnly about 11% of the initial Hydrogen in the Sun is in the core where it is hot enough to burn. What was the total mass of the initial H in the core of the Sun? (Mass of the Sun is 1.989 × 10^30 kg)arrow_forward
- The Sun emits 3.839 x 1026 J of energy every second, which is generated from the fusion of hydrogen into helium in its core. Using Einstein's equation E = mc2 (with c = 2.9979 x 108 m/s), determine how much mass the Sun converts to energy every second due to nuclear fusion in its core. If we assume that the Sun has been shining at this same rate through its entire 4.6 billion year history, how much mass has the Sun lost due to nuclear fusion during its lifetime? Express your answer as a fraction of the Sun's current mass (1.9891 x 1030 kg).arrow_forwardThe mass of the Sun is 2.0x10^30 kg The thermal energy of the Sun is approximately 2x10^41 joules because thermal energy contributes to the mass of the Sun. Express the answer in percentagearrow_forwardHow fast do gravity waves move? 3,000 km/s 30,000 km/s 30,000,000 m/s at the speed of lightarrow_forward
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