EM Waves, Ether, Light homework

EM Waves, Ether, Light homework - In answering this state...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
PHYSICS 6 SPRING 2006 HOMEWORK 1 (due Tues. Jan.31) Read: Notes on Estimation will be posted in Course Documents after we discuss Fermi problems in class. Classical motion notes and Hewitt on projectiles These are to be read over the first 2 weeks, as they are handed out. Problems: 1. Express the following numbers in exponential notation (e.g. 202 = 2.02 × 10 2 ): (a) 0.0002045 (b) 123.456 (c) 100,000 (d) 0.00000093 2. Carry out the following operations (and keep only 2 significant figures ): (a) (35×10 5 ) ÷ (6.5×10 4 ) (b) 123.456 ÷ (7×10 -5 ) (c) 154.7 + 0.00456 (d) -63.99 - (936×10 -1 ) 3. Evaluate the following expressions (put into exponential notation): (a) 2 9 (b) 2 -9 (c) 8 2 (d) 8 -2 (e) 8 1/2 (f) 8 -1/2 (g) 2 1/8 (h) 2 -1/8 (i) 1/2 -1/8 (j) 1/2 1/8 4. Estimate the number of liters of water drunk by all people in the US each year.
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: In answering this, state your assumptions and show all the steps clearly. 5. Consider a 50 meter long moving walkway at the airport that travels 1 meter/sec. (a) If you walk on the walkway at 2 m/s in the direction of the motion, what is your speed relative to the adjacent stationary sidewalk? (b) How long does it take to reach the end? (c) If you walk on the walkway at 2 m/s opposite to the direction of the motion, what is your speed relative to the adjacent stationary sidewalk? (d) How long does it take the backward walker to travel from the end of the walkway to the beginning? Justus Sustermans, late 16th century (Florence) Portrait of Galileo Galilei Note : In Problem 2 (a) and (b) the first number is to be divided by the second number....
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern