C1P33

5.0 cm/min - multiply by 1 to convert cm to ft and then miles
and min to seconds or hours

5.0 cm/min *(1in/2.54cm)*(1ft/12in) = 0.164 ft/min
0.164 ft/min *(1min/60s) = 0.0027 ft/s = 2.7E-3 ft/s

0.164 ft/min *(60min/hr) *(1mi/5280ft) = 0.00186 mi/hr = 1.9E-3 mi/hr

C1P34

1 lifetime ~75yr = 75yr*(365dy/yr)*(24hr/dy)*(60min/hr)*(70beats/min) ~3E9 beats

P46

see #34 and get ~3.15E7 s/yr = 31.5Ms/yr

P63

  1. 3 sig.figs. val=5.74E-3 kg
  2. 1 sig.figs. val=2E0 m
  3. 3 sig.figs. val=4.50E-3 m
  4. 3 sig.figs. val=4.50E1 kg
  5. 4 sig.figs. val=1.009E5 s
  6. 4 sig.figs. val=9.500E3 mL

P76

$5000 in half-dollar coins, $5000*(1coin/$0.50) = 10,000 coins
Say 20 coins is a pound, so maybe 50 per kg, (picked out of my
head, so maybe factor of 2 or 3 accuracy):

10,000 coins *(1kg/50coins) = 200 kg

If I look up the mass (or use a scale), I find 11.34 gm
at http://en.wikipedia.org/wiki/Half_dollar_%28United_States_coin%29

10,000 coins *(0.01134 kg/1coin) = 113 kg


$1,000,000 in $20 bills
Again guess that it a bill is a gram (wild guess, so ~factor of 5 accuracy)
$1E6 *(1bill/$20) *(0.001kg/bill) = 50kg


I massed bills from my wallet and got
0.96gm, 1.01gm, 1.04gm, .92gm, .98 gm, so
I'd say my 1 gm estimate was pretty good, eh?