The meter is the standard unit of length for physics. Which of these is the current way we define that standard? Based on a metal bar serving as a length "standard " that is kept by the National Institute of Standards and Technology (NIST) in the U.S. Based on the average distance from the Earth to the Sun. Based on the diameter of the Earth. Precisely how far light travels in 1/299792458 second

The meter is the standard unit of length for physics. Which of these is the current way we define that standard? Based on a metal bar serving as a length "standard " that is kept by the National Institute of Standards and Technology (NIST) in the U.S. Based on the average distance from the Earth to the Sun. Based on the diameter of the Earth. Precisely how far light travels in 1/299792458 second

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter1: Introduction And Vectors

Section: Chapter Questions

Problem 56P: The distance from the Sun to the nearest star is about 4 1016 m. The Milky Way galaxy (Fig. P1.56)...

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The distance from the Sun to the nearest star is about 4 1016 m. The Milky Way galaxy (Fig. P1.56) is roughly a disk of diameter 1021 m and thickness 1019 m. Find the order of magnitude of the number of stars in the Milky Way. Assume the distance between the Sun and our nearest neighbor is typical. Figure P1.56 The Milky Way galaxy.
A light-year (ly) is the distance light travels in one year (at speed of 2.998 ×× 108 m/sm/s ). An astronomical unit (AU) is the average distance from the Sun to Earth, 1.50 ×× 108 kmkm.1 yearyear = 3.156 ×× 107 ss. a. How many meters are there in 6.50 lyly ? Express your answer using three significant figures. b. How many AUAU are there in 6.50 lyly light-year? Express your answer using three significant figures.
Using a single dimensional equation, estimate the number of steps it would take you, walking at your normal stride, to walk from the Earth to Alpha Centauri, a distance of 4.3 light-years. The speed of light is 1:86 x 105A miles/s.
The speed of light is 3 x 10^8 meters per second (m/s). What is the speed of light in miles per year (mi/yr)?
What is the speed of a car going v=1.000mphv=1.000mph in SI units? Notice that you will need to change from miles to meters and from hours to seconds. You can do each conversion separately. Use the facts that 1mile=1609m1mile=1609m and 1hour=3600s1hour=3600s.
The speed of light is 2.998 × 108 m/s. One light-year is the distance that light travels in one year. One Astronomical Unit (AU) is 1.50 × 108 km. (a) How many meters are in 1.0 light-year? (b) How many meters are in 1.000 light-year? (c) How many AU are in 1.00 light-year? (d) What is the speed of light in AU/h?
Write the scientific notation (10n) 0012 = 560000 = Write out the number 3 x 104 = 8 x 10-2 = How many centimeters are in 2 kilometers? Write your answer in scientific notation. How long would it take in minutes to travel 5km if you are traveling at a speed of 30 m/s? A ship left shore 3 days ago and has been moving at a constant speed. The cruise ship is now 1440 miles away. What is the average speed in mph? 5a. A tuning fork has a period of 4s. What is the frequency? 5b. If the tuning fork above is struck in air, what is the wavelength? 5c. If the tuning fork above is struck in water, what is the wavelength? The wave below is traveling at 5 m/s. 6a. What are the wave y(x) and oscillator y(t) sinusoid equations for this wave? What is a sound wave? Identify where the compressions and the rarefactions are in both graphs.…
How many miles does light travel in one hour? The speed of light is 1.86x10^5 miles per second.
NASA sends a radio signal to a robot on Mars, which is 225 x106 km from Earth. How long does it take the rover to get the radio signal? A radio wave travels at 3x108 m/s. .75 sec 1.33 sec Instantly 12.5 min
How do scientists define length in terms of meters?
• Radio waves travel at the speed of light, approximately 186,000miles per second. How much time does it take for a radio messageto travel from Earth to the Moon and back? (See the inside backcover for the necessary data.)
2) Rewrite the following expression in proper scientific notation as in the example on page 1. Note that here you also have to take care of the number of significant digits. ((140.88)(18.775)(60110)(7.76))/((0.00024)(401×10^8)(88.0))= 3) Solve the above expression using your calculator. Round your answer to the appropriate number of significant digits. Explain how you round it.

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		Based on a metal bar serving as a length "standard " that is kept by the National Institute of Standards and Technology (NIST) in the U.S.
		Based on the average distance from the Earth to the Sun.
		Based on the diameter of the Earth.
		Precisely how far light travels in 1/299792458 second.