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The rocket’s 40 W motor is plugged into a 100 V outlet for 3 minutes.

a)How much current does the motor require?

b)What is the resistance of the motor?

c)How many electrons pass through the motor?

d)What amount of energy (in Joules) does the motor require?

e)What amount of energy (in kWh) does the motor require?

f)If electricity costs $0.13/kWh, how much will it cost to run the motor for 50 minutes?

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

1. A modern color T.V. set draws 5.0 A when operated on120V.
a. How much power does the set use?
b. If the set is operated for an averageof14 h/day, What energy in KWh does it consume per month (30days)?
2. A 100 W lamp is connected to 120 V.
a. How much current flows throughthelamp?
b. What is the resistance of the lamp?
1. A modern color T.V. set draws 5.0 A when operated on120V.
a. How much power does the set use?
b. If the set is operated for an averageof14 h/day, What energy in KWh does it consume per month(30days)?
2. A 60.0 W light bulb is 30.0% of the electric energyisconverted to light energy.
a. How many joules does the lightbulbconvert into light each minute it is in operation?
b. How many joules of thermal energy doesthelight bulb use each minute?
Thanks in advance

A household's electric bill is shown below. Use this electric billto answer the following questions except for D. For D you'll needto actually go around your home and count up the total wattage ofall the light bulbs you are using.

NOTE: Your answers for A, B, & C must be exact to be counted ascorrect.WebAssign will check your answer for the correct number ofsignificant figures.

Service From: NOV 20 to DEC 18 (28 days)
PREVIOUS BILL AMOUNT PAYMENTS
(-) NEW CHARGES (+) ADJUSTMENTS (+ OR -) AMOUNT DUE (=)
$262.61 $262.61 $114.09 $5.71 $119.80

PREVIOUS METER READING PRESENT METER READING TOTAL USAGERESIDENTIAL SERVICE SALES TAX (3%) NEW CHARGES
51517 kWh 52394 kWh 877 kWh $110.77 $3.32 $114.09


A.) State the number of days in the billing cycle for the electricbill shown above.

Answer:________ days

B.) State the number of kWh used in this cycle.

Answer:________ kWh

C.) State how much the household was charged for energy used inthis cycle. Do not include taxes nor other fees.

Answer: $__________

D.) State the total wattage of all the light bulbs in yourhome.

Answer:________ W

E.) What is the cost per kWh? Do not include taxes nor otherfees.

Answer:_________ $/kWh

Answer:_________ ¢/kWh

F.) In joules, how much energy did this household use?

Answer:__________ J

G.) What was this household's average power consumption? Expressyour answer in both W and kW.

Answer:___________W

Answer:___________ kW

H.) The electric company has seen to it that each home is providedwith roughly 120 V at each electrical outlet (there are a few thatare 240 V but we'll ignore those). Using this fact and yourprevious answer (the power in W) determine the average current thatwas running through this house.


Answer:___________ A

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