In doing a load of clothes, a clothes drier uses 16 A of current at 240...
In doing a load of clothes, a clothes drier uses 16 A of current at 240 V for 42 min. A personal computer, in contrast, uses 2.9 A of current at 120 V. With the energy used by the clothes drier, how long (in hours) could you use this computer to "surf" the Internet?
Homework Answers
power used by cloth drier = VI = 16*240 = 3840 W
total energy = 3840*42*60 = 9676800 J
power requirment of computer = 2.9*120 = 348 W
time for which the computer can be run = 9676800 / 348 = 27806.9 s = 7.72 hours
so, the computer can be run for 7.72 hours
Add Answer to:
In doing a load of clothes, a clothes drier uses 16 A of current
at 240...
A 210-V clothes dryer draws a current of 20 A. How much energy in kilojoules does...
A 210-V clothes dryer draws a current of 20 A. How much energy in kilojoules does it use in 1.8 hour(s) of operation? (don't forget to convert hours to seconds, and do not input commas in your answer!)
Part A : The resistance of an electric heater is 90 Ω when connected to 120...
Part A : The resistance of an electric heater is 90 Ω when connected to 120 V. How much energy does it use during 15 min of operation? (answer in J) Part B : The lightbulb used in a computer projector has a resistance of 71 Ω. What is the current through the bulb when it is operating on 120 V? ( answer in A )
3. An electric motor draws 2238 W and 12 A when operating on a 240 V source. Determine the (a) Po...
3. An electric motor draws 2238 W and 12 A when operating on a 240 V source. Determine the (a) Power factor of the motor. (b) Apparent power input to motor. (c) True power input to motor. (d) Horsepower output of the motor if it is 75% efficient. 4 The follwing s found on the nameplate of a motor. 3 hp 60 Hz 1 phase 120/240 V 34/17 A 1,740 RPM irthe power factor of the motor is 0.30, what...
Review Con: Part A An incandescent light bulb uses a coiled filament of tungsten that is...
Review Con: Part A An incandescent light bulb uses a coiled filament of tungsten that is 580 mm long with a diameter of 46.0 um. At 20.0°C tungsten has a resistivity of 5.25 x 1012.m. Its temperature coefficient of resistivity is 0.0045 (Cº) , and this remains accurate even at high temperatures. The temperature of the filament increases linearly with current, from 20°C when no current flows to 2520°C at 1.00 A of current What is the resistance of the...
1.A single light bulb is connected to a 12 V battery. The light bulb uses 55...
1.A single light bulb is connected to a 12 V battery. The light bulb uses 55 W of power (which is about what a car’s headlight uses). (a) What is the current flowing out of the high-voltage (+) end of the battery? (b) What is the current flowing into the low-voltage (-) end of the battery? (c) The battery has a sticker on it that says “This 12V battery contains 50 Amp-hours.” This indicates Amps × hours that the battery...
The heating element of a coffeemaker operates at 120 V and carries a current of 5.50...
The heating element of a coffeemaker operates at 120 V and carries a current of 5.50 A. Assuming the water absorbs all of the energy converted by the resistor, calculate how long it takes to heat 0.710 kg of water from room temperature (23.0°C) to the boiling point. min Need Help? Read It Master It -/10 Points] DETAILS SERCP11 17.2.P.005. A certain laboratory experiment requires an aluminum wire of length of 27.0 m and a resistance of 4.30 at 20.0°C....
Service From: APR 14 to MAY 16 (32 days) PREVIOUS BILL AMOUNT PAYMENTS (-) NEW CHARGES...
Service From: APR 14 to MAY 16 (32 days) PREVIOUS BILL AMOUNT PAYMENTS (-) NEW CHARGES (+) ADJUSTMENTS (+ OR -) AMOUNT DUE (=) $184.99 $184.99 $251.98 $41.02 $293.00 PREVIOUS METER READING PRESENT METER READING TOTAL USAGE RESIDENTIAL SERVICE SALES TAX (3%) NEW CHARGES 30162 kWh 32748 kWh 2586 kWh $244.64 $7.34 $251.98 A.) State the number of days in the billing cycle for the electric bill shown above. days B.) State the number of kWh used in this cycle....
1- Capacitor B has half of the capacitor A. Compare the load of capacitor A with...
1- Capacitor B has half of the capacitor A. Compare the load of capacitor A with capacitor B charge when the two capacitors remain connected in series with a battery for a long time. 2- A capacitor immersed in the air has capacitance equal to 12.5 μF when the potential difference at its terminals is 24.0V. If we insert a constant material dielectric equal to 3.75 between the capacitor plates, filling the space between them completely, (a) how much energy...
relatively straight forward, please show all work! 2) Transmission losses Imagine that you want to provide...
relatively straight forward, please show all work!
2) Transmission losses Imagine that you want to provide power to a resistive element (a load) with a battery as shown in the diagram below. Your load needs 20W of power to operate. You have two choices: you can connect a 5V or a 12 V battery. a) How much current must run through the circuit in each case? b) The wiring in your dorm uses a standard 12 gauge wire size with...
please solve this thanks the answear is IPN380 3-16 A simple beam with an overhang is subjected to a point load P...
please solve this thanks the answear is IPN380
3-16 A simple beam with an overhang is subjected to a point load P 6 kN. If the maximum allowable deflection at point C is 0.5 mm, select the lightest IPN section from Table F-2 that can be used for the beam. Assume that L 3 m and ignore the distrib- uted weight of the beam. 883 2 PROBLEM 9.3-16 Representative Problems 9.3-17 A cantilever beam AB is acted upon by a...
3. An electric motor draws 2238 W and 12 A when operating on a 240 V source. Determine the (a) Power factor of the motor. (b) Apparent power input to motor. (c) True power input to motor. (d) Horsepower output of the motor if it is 75% efficient. 4 The follwing s found on the nameplate of a motor. 3 hp 60 Hz 1 phase 120/240 V 34/17 A 1,740 RPM irthe power factor of the motor is 0.30, what...
Review Con: Part A An incandescent light bulb uses a coiled filament of tungsten that is 580 mm long with a diameter of 46.0 um. At 20.0°C tungsten has a resistivity of 5.25 x 1012.m. Its temperature coefficient of resistivity is 0.0045 (Cº) , and this remains accurate even at high temperatures. The temperature of the filament increases linearly with current, from 20°C when no current flows to 2520°C at 1.00 A of current What is the resistance of the...
The heating element of a coffeemaker operates at 120 V and carries a current of 5.50 A. Assuming the water absorbs all of the energy converted by the resistor, calculate how long it takes to heat 0.710 kg of water from room temperature (23.0°C) to the boiling point. min Need Help? Read It Master It -/10 Points] DETAILS SERCP11 17.2.P.005. A certain laboratory experiment requires an aluminum wire of length of 27.0 m and a resistance of 4.30 at 20.0°C....
relatively straight forward, please show all work!
2) Transmission losses Imagine that you want to provide power to a resistive element (a load) with a battery as shown in the diagram below. Your load needs 20W of power to operate. You have two choices: you can connect a 5V or a 12 V battery. a) How much current must run through the circuit in each case? b) The wiring in your dorm uses a standard 12 gauge wire size with...
please solve this thanks the answear is IPN380
3-16 A simple beam with an overhang is subjected to a point load P 6 kN. If the maximum allowable deflection at point C is 0.5 mm, select the lightest IPN section from Table F-2 that can be used for the beam. Assume that L 3 m and ignore the distrib- uted weight of the beam. 883 2 PROBLEM 9.3-16 Representative Problems 9.3-17 A cantilever beam AB is acted upon by a...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago