The stopping potential for electrons emitted from a surface illuminated by light of wavelength 507 nm is 0.780 v. when the incident wavelength is changed to a new value, the stopping potential is 1.42 v. (a) what is this new wavelength? (b) what is the work function for the surface?

good looking response

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