PHY 101 Week 5 Learning Team Assignment Textbook Exercises
PHY 101 Week 5 Learning Team Assignment Textbook Exercises Recent
Chapter 26
- The Sun is 1.50 x 10^11 m from Earth. How long does it take for the Sun’s light to reach Earth? How long does it take light to cross the diameter of Earth’s orbit? Compare this time with the time measured by Roemer in the 17th century (Problem 1).
- The nearest star beyond the Sun is Alpha Centauri, 4.2 x 10^16 m away. If we were to receive a radio message from this star today, show that it would have been sent 4.4 years ago.
Chapter 28
3. A butterfly at eye level is 20 cm in front of a plane mirror. You are behind the butterfly, 50 cm from the mirror. What is the distance between your eye and the image of the butterfly in the mirror
5. No glass is perfectly transparent. Mainly because of reflections, about 92% of light passes through an average sheet of clear windowpane. The 8% loss is not noticed through a single sheet, but through several sheets, the loss is apparent. How much light is transmitted by a double-paned window (one with two sheets of glass)