A small space heater uses 1,193 Watts of power. What does it cost in dollars to use the heater for an average of 17.3 hours every day for 30 days if you must pay 12.3 cents per kilowatt-hour? (Enter answer with 2 digits right of the decimal. Do not enter dollar sign.)

Q: A hair dryer uses 505 W of power. If the hair dryer is using 8 A of current, what is the voltage (in…

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Q: An electric heater is rated 2.5 kW. how much energy does it use in 12 hours.

A: Given value--- power = 2.5 kW. time = 12 hour. We have to find--- Energy ?

Q: Calculate the power (heat generated per second) in watts, in resistor R2, given that: R1=5 ohm R2=3…

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Q: The figure below shows an electrical motor.   If the motor ran for 10 minutes, how much energy…

A: Given Voltage (V) = 120 V Current (I)  = 5 A Time (t)      = 10 minutes

Q: A furnace for an electric heating system is rated at 121 amperes and 27,500watts. What is the…

A: Given: The current is 121 A. The power is 27500 W.

Q: how much work does a 60 watt bulb do in 1 minute

A: Given Power P = 60 W Duration t = 1 minute = 60 seconds

Q: What is the Power (Watts) dissipated in a 25 Ohm circuit if it has 3.0 Amps of current?

A: SOlution: Given that current I =3 Amps Resistance r = 25 Ohm the power dissipates

Q: An electric clothes dryer is rated at 2,200 W. How much energy does it use in 45 min?

A: Write the formula for power.

Q: A circuit consists of a 10.0-ohm resistor, a 15.0-ohm resistor, and a 20.0-ohm resistor connected in…

A: Given data:  Three resistors are connected in parallel combination R1 = 10.0 Ω, R2 = 15.0 Ω and R3 =…

Q: A series DC motor has a resistance of 8 2 between its terminals. The motor runs at 1,393 rpm at 230…

A: Initial Resistance, R =  8 ohm Initial Round per minute, N1=1393 Voltage, V=230 V Initial Current,…

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Q: What is the power rating of a heating coil with a resistance of 12 ohms that draws a current of 20…

A: Given that the value of resistance and current then we have to determine the power rating of the…

Q: A microwave has a power requirement of 1,264 W. A frozen dinner required 4.2 mins to heat on full…

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Q: tank contains 303 gallons of oil. This is the equivalent of 4.43×1010 J of energy. How many kWh of…

A: Given that A tank contains 303 gallon of oilThe energy To determine How many KWH of energy does this…

Q: An electric water heater uses 3,517 W from a 220 V AC line.  What is the peak current, in amps?

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Q: How much does it cost to power a refrigerator for 30 days if it is rated at 200 Watts and the power…

A: Electrical energy (E) use equals the power (P) of the object multiplied by the amount of time (t)…

Q: How much does it cost to operate a 80-WW lamp continuously for a week if the power utility rate is…

A: Given: The wattage of bulb = 80 W. Power utility rate = 25 cents/kWh.

Q: What is the resistance of a toaster element with a voltage of 120 V and a current of 6.5 A?

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Q: A current of 5 amps passes through a 10 ohm resistor. How many joules of energy will be generated by…

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Q: What is the Output Voltage of a battery that expends 5.6j of energy in moving 0.5C or charge?

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Q: A resistor with a resistance of 10 ohms is connected in series with another resistor of unknown…

A: When multiple resistors are connected in series, the total resistance (Rtotal) of the circuit is…

Q: What is the Output Voltage of a battery that expends 7.2J of energy in moving 1C of charge?

A: Energy expended by the battery = 7.2 J charge = 1 C

Q: A 100 kW solar array located in Cheney, WA is estimated to produce 126,000 kWh.  Assuming…

A: In Cheney WA the average residents electric charges are 6cents/kWh of electricity.  And as given…

Q: If your cell phone has a battery that can hold 1124 milliampere-hours of charge, how long will the…

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Q: What is the efficiency of an electric generator that produces 1.17 kwh per kg of coal burned beef…

A: Given Data: The remaining work done by the engine is, Wnet=1.17 kwh The heat input is,…

Q: ne 9-volt battery contains 19.7 thousand joules of energy.  A 4-pack of 9-volt batteries cost $10.31…

A: The energy in one battery E =19.7×103 J Total energy of 4 pack 9V battery is 4E The power is 1 Watt…