College Physics
posted by Lanise .
A 1500W heater is designed to be plugged into a 120V outlet.
What current will flow through the heating coil when the heater is plugged in? I = A
What is R , the resistance of the heater?
How long does it take to raise the temperature of the air in a goodsized living room 3.0m x 5.0m x 8m by 10 degrees C? Note that the specific heat of air is 1006 J/(kg x degrees C) and the density of air is 1.20 kg/m^3.

Physics 
drwls
Power = I*V
Solve for I
R = V/I
Power * Time = Mass * (specific heat) * (change in T)
Solve for time.
The answer you get will be an underestimate because heat is also being lost to the walls and windows of the room.
Show your work if you need further assistance
Respond to this Question
Similar Questions

physics
When a voltage of 120 V is impressed across an electric heater, a current of 0.22 A will flow through the heater if the resistance is ____________ Omega. 
College Physics
On average, an electric water heater operates for 3.4h each day. If the cost of electricity is $0.3 kWh, what is the cost of operating the heater during a 30day month? 
Physics
A circuit contains sic 60W lamps with a resistance of 240ohm each and a 10.0ohm heater connected in parallel. The voltage across the circuit is 120 V. Find the current in the circuit for the following situations:::: a. four lamps … 
physics
an electric heater provides 2kW of power when connected to a 120 V potential difference. what is the current through the heater? 
Physics
An immersion heater of resistance R converts electrical energy into thermal energy that is transferred to the liquid in which the heater is immersed. If the current in the heater is I, the thermal energy transferred to the liquid in … 
Physic
These three are connected to 240V main supply : Grill = 6A Desk lamp = 0.6A Convector heater = 4.5 a(ii) which of these has the greatest resistance ? 
Physics
The heating element of a simple heater consists of a 2.2mlong, 0.70mmdiameter nichrome wire. When plugged into a 120 V outlet, the heater draws 7.5 A of current when hot. I found that the wire's resistance when it was hot was 16 … 
math
a heater is plugged into 120v wall outlet. if the resistance in the heater is 15ohms what is the power used 
electron theory and ohm law
if the 5ohm heater in problem 15 is placed with a 15ohm heater, what current will the 15ohm heater draw from the same power supply? 
Science: Physics
An electric heater of power 2500 W is connected to a voltage of 230 V. i) Calculate the electric current going through the heater. ii) What is the resistance of the heater?