21st Century Astronomy
6th Edition
ISBN: 9780393428063
Author: Kay
Publisher: NORTON
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Chapter 2, Problem 39QP
To determine
Find the circumference of Earth based on the Egyptian stadion and how close is that value to the modern value.
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Chapter 2 Solutions
21st Century Astronomy
Ch. 2.1 - Prob. 2.1ACYUCh. 2.1 - Prob. 2.1BCYUCh. 2.2 - Prob. 2.2CYUCh. 2.3 - Prob. 2.3CYUCh. 2.4 - Prob. 2.4CYUCh. 2.5 - Prob. 2.5CYUCh. 2 - Prob. 1QPCh. 2 - Prob. 2QPCh. 2 - Prob. 3QPCh. 2 - Prob. 4QP
Ch. 2 - Prob. 5QPCh. 2 - Prob. 6QPCh. 2 - Prob. 7QPCh. 2 - Prob. 8QPCh. 2 - Prob. 9QPCh. 2 - Prob. 10QPCh. 2 - Prob. 11QPCh. 2 - Prob. 12QPCh. 2 - Prob. 13QPCh. 2 - Prob. 14QPCh. 2 - Prob. 15QPCh. 2 - Prob. 16QPCh. 2 - Prob. 17QPCh. 2 - Prob. 18QPCh. 2 - Prob. 19QPCh. 2 - Prob. 20QPCh. 2 - Prob. 21QPCh. 2 - Prob. 22QPCh. 2 - Prob. 23QPCh. 2 - Prob. 24QPCh. 2 - Prob. 25QPCh. 2 - Prob. 26QPCh. 2 - Prob. 27QPCh. 2 - Prob. 28QPCh. 2 - Prob. 29QPCh. 2 - Prob. 30QPCh. 2 - Prob. 31QPCh. 2 - Prob. 33QPCh. 2 - Prob. 34QPCh. 2 - Prob. 35QPCh. 2 - Prob. 36QPCh. 2 - Prob. 37QPCh. 2 - Prob. 38QPCh. 2 - Prob. 39QPCh. 2 - Prob. 40QPCh. 2 - Prob. 41QPCh. 2 - Prob. 42QPCh. 2 - Prob. 43QPCh. 2 - Prob. 44QPCh. 2 - Prob. 45QP
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- In the US, lengths are often measured in inches, feet, yards and miles. Let's do some conversions. The definition of the inch is: 1 inch = 25.4 mm, exactly. A foot is 12 inches and a mile is 5280 ft, exactly. A centimetre is exactly 0.01 m or 10 mm. Sammy is 5 feet and 5.3 inches tall. Mark all the true statements below (Hint: use the 'multiply by 1' technique. Use the appropriate number of sig figs.)arrow_forward1.8. Having access to the vast informational resources of the Library of Alexandria, Eratosthenes knew that the distance between Syene and Alexandria is 5000 stadia. One stadion (plural stadia) was a unit of length commonly used at the time; it was approximately equal to 160 meters. Express the distance between Syene and Alexandria in meters: s = 1.9. Travelling from Syene to Alexandria, one travels along the arc of a circle. Recall that for a circle of radius R, the length s of an arc and the angle 0 subtended by that arc are related by the following equation: [8] In using this equation, the angle must be measured in radians. Use equation [8] to S = RO calculate the radius of Earth: R =arrow_forwardPut the following number in scientific notation, using the number of significant figures listed in (parenthesis) 235,000 (4) 2.350 x 10 .235 x 10 2.35000 x 10 2.35 x 10 2.350 x 10 2.35 x 10arrow_forward
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- A light-year is the distance light travels in one year (at speed 2.998 x 10^8 m/s). (a) How many meters are there in 1.00 light-year? (b) An astronomical unit (AU) is the average distance from the Sun to Earth, 1.50 X 10^8 km. How many AU are there in 1.00 light-year?arrow_forward(0.59 x 10^-6 x 0.3) / (0.36 x 10^-3) when you calculate that don't you get 4.9166 x 10 ^-4 m not 4.92 x 10^-2 m?arrow_forwardThere are 2600 miles between Boston and Los Angeles (in a straight line). If a plane flies at 600miles/hour. How long is the flight between Boston and LA? (ROUND OFF ANSWER TO TWO DECIMAL PLACES)arrow_forward
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