ASTR302 Homework #3 (due in class on Monday, February 18, 2008) 1) Assume that the Sun's current luminosity (3.86 x 10 26 W) has remained constant over the last 4.5 billion years. Also, the current mass of the sun is 1.99 x10 30 kg. a) Estimate how m
1)
Assume that the Sun's current luminosity (3.86 x 10 26 W) has remained constant over the last 4.5 billion years. Also, the current mass of the sun is 1.99 x1030 kg. a) Estimate how many kilograms of hydrogen the Sun has consumed over the past 4.6
ASTR302 Homework #4 (due in class on Wednesday, March 12, 2008) 1) White dwarfs are held up against gravitational collapse by gas degeneracy pressure. The equation of state gas degeneracy pressure is P 5 / 3 .
M2 Hydrostatic equilibrium requires t
Galaxy Rotation Curves and Dark Matter
The stars, gas and dust in a galaxy rotate about the center of the galaxy. We would like to know exactly how to describe the rotation of all parts of the galaxy. In other words, we want to know if galaxies rota
ASTR302 Homework #4 (due in class on Wednesday, March 12, 2008) 1) White dwarfs are held up against gravitational collapse by gas degeneracy pressure. The equation of state gas degeneracy pressure is P 5 / 3 .
M2 Hydrostatic equilibrium requires t
ASTR302 Homework #2 (due in class on Wednesday, January 30, 2008) 1) Complete the Lecture Tutorial on Telescopes and Earth's Atmosphere (pp 49-51). 2) Complete the Lecture Tutorial on Light and Atoms (pp 63-67). 3) Consider a hydrogen atom in the sec
ASTR302 Homework #2 (due in class on Wednesday, January 30, 2008) 1) Complete the Lecture Tutorial on Telescopes and Earth's Atmosphere (pp 49-51). 2) Complete the Lecture Tutorial on Light and Atoms (pp 63-67). 3) Consider a hydrogen atom in the sec
ASTR302 Homework #1 (due in class on Wednesday, January 16, 2008) 1) Complete and submit LT Seasonal Stars (pp 7-9 of Lecture Tutorial book) 2) Mars rotates 668 times per Martian year and it both rotates and revolves in the same direction. The length
ASTR302 Homework #1 (due in class on Wednesday, January 16, 2008) 1) Complete and submit LT Seasonal Stars (pp 7-9 of Lecture Tutorial book) 2) Mars rotates 668 times per Martian year and it both rotates and revolves in the same direction. The length
Galaxy Rotation Curves and Dark Matter
The stars, gas and dust in a galaxy rotate about the center of the galaxy. We would like to know exactly how to describe the rotation of all parts of the galaxy. In other words, we want to know if galaxies rota
ASTR 302 Some Practice Final Exam Solutions Below are some practice final exam questions. Not all topics covered on the final exam are included below. That is, the final will cover more than just the 6 topics below. 1) While conducting a parallax stu
ASTR 302 Some Practice Final Exam Questions Below are some practice final exam questions. Not all topics covered on the final exam are included below. That is, the final will cover more than just the 6 topics below. 1) While conducting a parallax stu
ASTR 302 W08 Midterm 2 Review Guide Date Wednesday, February 27, 2008 Format 1) Multiple choice section (20-40%) 2) Short answer problems (qualitative and quantitative) (80-60%) Topics 1) Properties of the sun and how we know them (size, mass, temper
Midterm 1 Equation Sheet (version 1) Wave relation for light c f Energy of a photon E hf Doppler shift (for v < c) v 0 (1 v / c) 0 c Doppler shift (for v ~ c) 1 v / c 0 1 v / c Wien's law 2.898x103 (m K ) max T Stefan-Boltzmann law Flux T
ASTR 302 W08 Midterm 1 Review Guide Date Friday, February 1, 2008 Format 1) Multiple choice section (20-40%) 2) Short answer problems (qualitative and quantitative) (80-60%) Topics 1) Cosmic Distances and Scales 2) Position of stars in sky (including
ASTR 302: Stars and Galaxies Dr. Keller
Midterm Exam February 1, 2008
Name: ANSWER KEY FOR SHORT ANSWER PROBLEMS _
Complete the 9 multiple choice and 4 short answer problems attached. Point totals are listed for each problem. Complete all answers
Midterm 1 Equation Sheet (version 1) Wave relation for light c f Energy of a photon E hf Doppler shift (for v < c) v 0 (1 v / c) 0 c Doppler shift (for v ~ c) 1 v / c 0 1 v / c Wien's law 2.898x103 (m K ) max T Stefan-Boltzmann law Flux T