Recent content by haleyscavone

thank you!

Because the voltage was unknown you would use both equations and substitution right? So P=I(IR) ---> P=I^2R So 3.5/220=I^2 .0159=I^2 I=.1581 Is that correct?

A digital clock has an operating resistance of 11000 and is plugged into a 114-V outlet. Assume the clock obeys Ohm's law. If the owner of the clock pays $0.09 per kWh, what does it cost to operate the clock for 34 days? Where do I even begin?

A transistor radio operates by means of a 9.5 V battery that supplies it with a 58 mA current. (a) If the cost of the battery is $0.85 and it lasts for 300 h, what is the cost per kWh to operate the radio in this manner?

What is the maximum current allowed in a 3.5 W, 220 ohm resistor? The answer needs to be in amps so how would I convert watts to volts?

thank you so much! that was exactly what I needed to know

An object in equilibrium has three forces exerted on it. A 28-N force acts at 90°, and a 65-N force acts at 60°. What is the magnitude and direction of the third force? I HAVE NO IDEA HOW TO DO THIS... PLEASE HELP!