The mass of an electron is 9.1×10^-31 kg the mass of a proton is 1.7×10^-27 kg an electron and a proton or about 0.59×10^-10 m apart in a hydrogen atom. What gravitational force exists between the proton and the electron of a hydrogen atom ?

hey , the answer is c

answer: he got 23

explanation:

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

option number c is the right answer.