18_Physics ProblemsTechnical Physics

# 18_Physics ProblemsTechnical Physics - 18 P1.68 P1.69...

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18 Physics and Measurement P1.68 v = F H G I K J F H G I K J F H G I K J F H G I K J F H G I K J F H G I K J 500 220 1 09144 1 1 14 1 24 1 3600 832 10 4 . . . furlongs fortnight yd furlong m yd fortnight days day hrs hr s ms This speed is almost 1 mm/s; so we might guess the creature was a snail, or perhaps a sloth. P1.69 The volume of the galaxy is ππ rt 22 1 2 19 61 10 10 10 = m m m 3 ej ~. If the distance between stars is 41 0 16 × m, then there is one star in a volume on the order of 0 1 0 16 3 50 × m 3 The number of stars is about 10 10 10 61 50 11 m t a r stars 3 3 P1.70 The density of each material is ρ == = m V m rh m Dh 4 . Al: g cm cm g cm The tabulated value g cm is smaller. Cu: g .23 cm .06 cm g cm The tabulated value g cm is smaller. Brass: .54 cm .69 cm g cm Sn: g .75 cm .74 cm g cm Fe: .89 cm .77 cm g cm 33 3 3 3 π F H G I K J F H G I K J 4515 252 375 2 75 2 70 2% 4563 15 9 36 8 92 5% 4 94.4 g 891 4691 13 768 4 216.1 g
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## This note was uploaded on 12/14/2011 for the course PHY 203 taught by Professor Staff during the Fall '11 term at Indiana State University .

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