Which type of nuclear reaction is used in commercial power generation?
a. fusion
b. fission
c. alpha decay

The commercial power generation is done using the nuclear fission reaction.

option B

Explanation:

The nuclear fission reaction is the reaction in the nucleus where the nucleus is divided into smaller parts. It is apparent from the name itself as it’s a destructive reaction where the nucleus splits.

This splitting of the nucleus occurs as a result of the heavy bombardment done over the atom through which the nucleus splits. The splitting is done into many parts of a smaller size.  

emily ruth's annual premium is $1058.50

step-by-step explanation:

emily ruth is a female of 27 years age purchasing 20 year endowment insurance with face value $25000.

from the given table,

for females, the age of a male 3 years younger should be used.

so, we have to check for 24 year male for 20 year endowment.

it is 42.34 for every $1000 face value.

for a face value of $25000,

it is 25 * 42.34 = $1058.50

∴ emily ruth's annual premium is $1058.50

power out to power in less than 100%