Homework Set 2
You will now complete the following homework problems from your textbook Conceptual Integrated Science: Page 144 #48 Page 175 #53 Page 207 #12 and #19 Page 851 #45 Page 893 #5 and #6Submit your answers in a Word document to the Dropbox no later than Sunday 11:59 PM EST/EDTPage 144 #48 If you wish to warm 100 kg of water by 20C for your bath show that 8370 kJ of heat is required.Page 175 #53. Show that it costs $3.36 to operate a 100 W lamp continuously for a week if the power utility rate is 20/kWh.Page 207 #12. What is the principal difference between a radio wave and light? between light and X-rays?Page 207 #19. What is the relationship between the frequency of light and its color?Page 851 #45. Knowing that the speed of light is 300000 km/s show that it takes about 8 min for sunlight to reach Earth.Page 893 #5. Which is hotter a red star or a blue star?Page 893 #6. What is the difference between apparent brightness and luminosity?