Concept explainers
The minimum wattage that the heater must have.
Answer to Problem 70GP
Explanation of Solution
Given:
Specific heat,
Temperature change,
Volume is
Formula used:
Heat energy is
Where,
Calculation:
From the equation of heat energy:
Therefore,
It is known that volume of the room is
So, volume is
At normal temperature pressure density of the air
From the equation
Now, by using the values of heat energy calculate the required power:
Required power
Required power
Conclusion: The required power is
Chapter 18 Solutions
Physics: Principles with Applications
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