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4 Yous PHY 211 Chapter 1 Homework 5 Horses are to race over a certain English meadow for a distance of 4.0 furlongs. What is the race distance in (a) rods and (b) chains? (1 furlong = 201.168 m, 1 rod = 5.0292 m, ‘ 1 chain = 20.117 m3 err Pokton KOS L238 Tose ( S 4 aWe Pal nC vb ‘ate AHS . ‘ ANS ACAI /olqeg = OF MEG, 7 Hydraulic engineers in the United States often use, as a unit of volume of water, the acre-foot, defined as the volume of water that will cover 1 acre of land to a depth of 1 fi. A severe thunderstorm dumped 2.0 in. of rain in 30 min on a town of area 26 km?. What , volume of water, in acre-feet, fell on the town? 1 . Cag CF YWWwt Sieg OF Zeon aK?! oF AH AQado o/ 4X 5 Lewy B® Vbpeoscs age SDSS Rey €y © 12 The fastest growing plant on record is a Hesperoyucca whipplei that grew 3.7 min 14 days. What was its growth rate in micrometers per second? “\“}..00 ,o0 /* VQ ° Rba4on SXN4G4S = \. ey, gas sec = S Kacy ST mx Fooo.eoe, Micra WE SVbeweae Micro mel ay ®. icteg 14 A lecture period (50 min) is close to 1 microcentury. (a) How long is a microcentury S in minutes? (b) Using x percentage difference = ee 100, actual Ny Coe\ Vico} X loa find the percentage difference from the approximation. ey Jlooy 16 Time standards are now based on atomic clocks. A promising second standard is based on pulsars, which are rotating neutron/stars (highly compact stars consisting only of neutrons). Some rotate at a rate that is highly stable, sending out a radio beacon that sweeps briefly across Earth once with cach fotation, like a lighthouse beacon. Pulsar PSR 1937 +21 is an example; it rotates once every 1.557 806 448 872 75 +3 ms, where the trailing +3 indicates the uncertainty in the last decimal place (it does nof mean +3 ms). (a) How many rotations does PSR 1937 + 21 make in 7.00 days? (b) How much time does the pulsar take to rotate exactly one million times and (c) what is the associated vo hey RE eat ght aaron Vine G C7 Vor aly fe SS bGa6 4 FABER Fry oy ayy To pot HUGO 5 FR : Pees ‘evil oe) MWiIks TaNehai, 19 Suppose that, while tying 64 beach near the equator w im set over a 
