How many kW.h of energy will a 400 W television set use in one month, if it is turned on for an average of 5.0 h per day? What will it cost you at $0.06/kW.h?

1.  You run your 1500 W microwave in your dorm room for 5.0 minutes to heat your TV dinner. What is the cost of the energy used, at a rate of 0.11 per kW·h?  and can a 120 V outlet with a 15 A current power your microwave without blowing the breaker? Why or why not?

A fully charged RC circuit is set up using R = 15.0 Ω and C = 8.20 μF with the switch initially open, as shown in the figure. At a certain time after the switch is closed, the current in the circuit has magnitude 3.00 A and the charge on the capacitor is 30.0 μC. At this time, what is the rate at which energy is being stored in the capacitor (in W)?

Consider the arrangement shown in the figure below where R = 7.00 , l = 1.10 m, and B = 2.25 T. HINT R xx xxxx x xx x x x x xxxxxx xx xxxxxx x x xxx x xxxxxx xxxx xx (b) What power (in W) is delivered to the resistor? W tea B Fapp (a) Apply the motional emf equation in combination with Ohm's law. (b) Recall the expressions for the power delivered to a resistor. (c) Apply the expression for the magnetic force on a current-carrying wire. (d) Recall the expression P = Fv. Click the hint button again to remove this hint. (a) At what constant speed (in m/s) should the bar be moved to produce a current of 1.40 A in the resistor? m/s (c) What magnetic force (in N) is exerted on the moving bar? (Enter the magnitude.) N (d) What instantaneous power (in W) is delivered by the force Fapp on the moving bar? W