An object at 27°c has its temperature increased to 37°c.

the power then radiated by this object increases by how many percent?
a. 3.3
b. 14
c. 37
d. 253

b. 14

Explanation:

= Initial temperature = 27 °C = 27 + 273 = 300 K

= Final temperature = 37 °C = 37 + 273 = 310 K

= Initial Power radiated by the object

= Final Power radiated by the object

We know that the power radiated is directly proportional to fourth power of the temperature. hence

Percentage increase in power is given as

.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2