25.07.2022 - 08:58

# A 1500- W heater is designed to be plugged into a 120 V outlet. A. What current will flow through the heating coil when the heater is plugged in? Express your answer numerically in ampere using three significant figures. I = boxed{space} A B. What is th

Question:

A {eq}\displaystyle 1500-\text{ W } {/eq} heater is designed to be plugged into a {eq}\displaystyle 120 \text{ V } {/eq} outlet.

A. What current will flow through the heating coil when the heater is plugged in? Express your answer numerically in ampere using three significant figures.

{eq}\displaystyle I = boxed{space} A {/eq}

B. What is the resistance of the heater? Express your answer numerically in ohm using three significant figures.

{eq}\displaystyle R = boxed{space} Omega {/eq}

c. How long does it take to raise the temperature of the air in a good-sized living room {eq}\displaystyle (3.00m times 5.00m times 8.00m) {/eq} by {eq}\displaystyle 10.0^circ C {/eq}? Note that the specific heat of air is {eq}\displaystyle 1006 J/(kg. ^circ C) {/eq} and the density of air is {eq}\displaystyle 1.20 kg/m^3 {/eq}. Express your answer numerically in minutes using three significant figures.

{eq}\displaystyle t = boxed{space} {/eq} minutes