If a 3.70 lb cat absorbs 3.60 × 10−6 KJ of radiation, how many rads did this cat absorb?

Answer 1

Absorption= Energy/Mass
also
1lb/2.205=1kg
1 rad = 100 ergs/gm = 100/10^7) Joules/ (1/1000gm)Kg
1 rad=0.01Joules/Kg
1 Joule= 1E+7 Ergs

Energy= 3.60 E-6
Mass= 3.70 /2.205 = 1.68 kg

Absorption=A= 3.60 E-6 J 1 E+7 ergs /1.68 (1000)g
A=.0214 ergs/g
A= .0214 / 100 = 2.14 E-4 rad