1. how much work is done on a 20-n rock that you lift 1.5 meters up?
a) 3 joules
b) 30 joules
c) 3 watts
d) 30 watts

= 30 joules

Step-by-step explanation:

Work done is given by the product of Force and distance

Work done = Force × distance

Work is measured in joules.

Force = 20 N , distance = 1.5 m

Thus;

Work done = 20 N × 1.5 m

                  = 30 Joules

correct answer:

i^31 = -i

amount of oatypop that contains the prize = 40%

amount   of oatypop which doesn't contain the prize = (100-40)=60%

probability that hannah will win a prize

    = s +f s +f f s+ff   f s+ff f f s+ infinity.where f= failure,s= success

=   or 60%

probability that hannah only has to buy 3 or less boxes before getting a prize= (s) and ( f s) and (ff s) and (f f f s)

        = = 87.04 %  

step-by-step explanation: