Assignment1

# Assignment1 - NAME=Aryum Jeon PERM NUMBER= 7165491 TA...

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NAME=Aryum Jeon PERM NUMBER= 7165491 TA NAME (Elijah or Genevieve)= Elijah L. Quetin SECTION DAY AND TIME= W 6-7pm Assignment #1 Due Friday Oct 1, 4 PM Chapter-1 Intro Problems: 8, 10, 13, 16, 21, 27, 28, 29, 32, 34 8. Deep inside the core of the Sun, enough protons can collide into each other with enough speed that they stick together to form a helium nucleus and generate a tremendous amount of energy at the same time. This process is called nuclear fusion . Every second, a star like our Sun converts 4 million tons of its material into heat and light through the process of nuclear fusion . 10. A solar system is when a star has several planets orbiting around it. A galaxy is a large part of space that has hundreds of billions of stars. 13. angle covered by the diameter of the full moon is about 1/2°. We therefore say that angular diameter of the moon is 1/2°. Alternatively, astronomers say that the moon subtends an angle of 1/2°. 16. a) 10^6 b) 6*10^3 c) 4*10^-3 d) 38*10^9 e) Age 26= 3.12*10^2 21. 3.7028163 × 10 17 meters is the 12 parsec. Parsec is unit of length, not time. 27. sun’s mass= 1.99*10^30 kg 75% is hydrogen. Mass of hydrogen= 1.67*10^-27 kg Total mass of hydrogen in Sun= 1.99*10^30kg*0.75= 1.4925*10^30kg Total number of hydrogen in sun= 1.4925*10^30kg/ 1.67*10^-27kg= 0.894*10^57

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28. distance from earth to sun= 1.496*10^8km
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Assignment1 - NAME=Aryum Jeon PERM NUMBER= 7165491 TA...

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