Answer:
11.18 minutes
Explanation:
We shall apply Newton's law of cooling
Rate of cooling ∝ Temperature difference
(T₂ - T₁ ) / t = k ( T₁ + T₂ / 2 - T )
A body cools from temperature of T₂ TO T₁ in time t , K being a constant.
(T₁ + T₂) /2 is the average temperature and T is temperature of surrounding.
Using the data given in the problem ,
For cooling from 425 degree to 300 degree
For cooling from 425 to 135 in time t we have
[/tex]
= 209k
From these two equations we get the value of t as
t = 16.18 s
So time required to cool from 300 to 135 degree isas follows
16.18 - 5 = 11.18 s
Answer:
turning a doorknob
Explanation:
it will snap back once you release it.
Answer:
The value is
Explanation:
From the question we are told that
The wavelength is
The distance is of the screen is
The width of the fifth dark spot is
Generally the width of a fringe is mathematically represented as
=>
=>
=>
Answer:
A plain mirrior is a mirrior with flat reflective surface.
hope it is helpful for you.
Answer: Condensation of moisture in the air onto the glasses.
Explanation:
When you come from a cold environment into a warm ski lodge, the glasses are at a much lower temperature than that of the lodge.
Because the air in the room contains moisture (water vapor), it condenses on a surface whose temperature is lower than the dew point of the room.