Awalrus transfers energy by conduction through its blubber at the rate of 150 w when immersed in −1.00°c water. the walrus’s internal core temperature is 37.0°c , and it has a surface area of 2.00m2 . what is the average thickness of its blubber, which has the conductivity of fatty tissues without blood?

average thickness of its blubber is 10.13 cm

Explanation:

given data

rate of heat transfer = 150 W

immersed water temperature = −1.00°C

internal core temperature = 37.0°C

surface area =  2.00 m²

to find out

What is the average thickness of its blubber

solution

we will apply here rate of heat transfer H equation that is express as

H = = .................1

here K is coefficient of thermal conductivity and AS is area and t2 - t1 is change in temperature and L is average thickness

so put all value in equation 1 we get L  

150 =  

solve it we get

L = 0.10133

so average thickness of its blubber is 10.13 cm

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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