The element in an incandescent light bulb that releases light energy is a phosphor mercury vapor a thin tungsten filament a thick tungsten filament

The correct answer is thin tungsten filament.

Explanation:

Incandescent light bulb is a substance which converts electrical energy to light and heat energy and has fine filament made of metal.

These bulbs have fine filament to have the maximum resistance as we know that resistance is inversely proportional to the area of cross section of the wire.

Metal used in the filament is tungsten because it has the highest melting point of

Hence, the correct answer is thin tungsten filament.

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

it's a b and