An electron has angular momentum that does not result from its orbital motion. What is the source of this momentum? A) electron spin
B) electric charge
C) magnetic force
D) mass defect

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

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.