Answer:
c.
Explanation:
In positron emission, also called positive beta decay (β+-decay), a proton in the parent nucleus decays into a neutron that remains in the daughter nucleus, and the nucleus emits a neutrino and a positron, which is a positive particle like an ordinary electron in mass but of opposite charge.
Does this help? Sorry it's wordy that's just how my teachers taught me :'(
Answer:
Average Power =581.6W
Explanation:
Power is the rate of doing work.
Power 
W = F*S
Power 
Where F is force, S is distance, t is time
F= weight of the student= 727N
S=12m, t= 15sec
Power 
Power =581.6W