How much energy is consumed by a 1.1 kW hair dryer used for 12 min? Express your answer with the appropriate units. HẢ E = Value Units Submit Request Answer Part B How much energy is consumed by a 12 W night light left on for 10 hr? Express your answer with the appropriate units. HẢ ? E = Value Units

How much energy is consumed by a 1.1 kW hair dryer used for 12 min? Express your answer with the appropriate units. HẢ E = Value Units Submit Request Answer Part B How much energy is consumed by a 12 W night light left on for 10 hr? Express your answer with the appropriate units. HẢ ? E = Value Units

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Part A What is the internal resistance of a 12.0-V car battery whose terminal voltage drops to 9.3 V when the starter motor draws 84 A ? Express your answer to two significant figures and include the appropriate units. HẢ ? r = Value Units Submit Request Answer Part B What is the resistance of the starter? Express your answer to two significant figures and include the appropriate units. HÀ ? R = Value Units
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Part A How many kWh of energy does a 650-W toaster use in the morning if it is in operation for a total of 5.5 min ? Express your answer to two significant figures and include the appropriate units. Energy = 6.0x10-2 kWh Submit Previous Answers Correct Part B At a cost of 9.0 cents/kWh, estimate how much this would add to your monthly electric energy bill if you made toast four mornings per week (16 times per month). Express your answer using two significant figures. ? Cost = cents/month
In the circuit below(Figure 1), R = 14.0 N and C = 3.00 x 10-6 F. The switch S is closed at t = 0. When the current in the circuit has magnitude 3.00 A, the charge on the capacitor is 40.0 × 10–6 C. Part A What is the value of the battery voltage? Express your answer with the appropriate units. HA ? E = Value Units Figure 1 of 1 Submit Request Answer Switch Part B орen At what time t after the switch is closed is the charge on the capacitor equal to 40.0 x 10-0 C? Express your answer with the appropriate units. µA ? i = 0 q = 0 t = Value Units a R b C Submit Request Answer
Part A A 5.1x10 V/m electric field creates a 3.5x1017 electrons/s current in a 2.0-mm-diameter aluminum wire. What is the drift speed? Express your answer using two significant figures. m/s = Pa Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Part B What is the mean time between collisions for electrons in this wire? Express your answer using two significant figures.
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Apply the loop rule to loop abcdefghija in the figure below. Use the following as necessary: E,, E2, E3, Ea, I, I3, R1, R2. 1, r2, a and rs For loop abcdefghija, = 0 ww S. ww ww ww
A student calculates the total potential difference of a circuit given the total current and total resistance for the circuit. The student works a new version of the question where the power has been changed by a factor of 0.693. Determine the factor by which the answer would change. 0.693 It does not change or it does not make sense to calculate given this information. 0.480 1.443
In recent years, practical hybrid cars have hit the road—cars in which the gasoline engine runs a generator that charges batteries that run an electric motor. These cars offer increased efficiency, but significantly greater efficiency could be provided by a purely electric car run by batteries that you charge by plugging into an electric outlet in your house.But there’s a practical problem with such vehicles: the time necessary to recharge the batteries. If you refuel your car with gas at the pump, you add 130 MJ of energy per gallon. If you add 20 gallons, you add a total of 2.6 GJ in about 5 minutes. That’s a lot of energy in a short time; the electric system of your house simply can’t provide power at this rate.There’s another snag as well. Suppose there were electric filling stations that could provide very high currents to recharge your electric car. Conventional batteries can’t recharge very quickly; it would still take longer for a recharge than to refill with gas.One possible…
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