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a 1500-w heater is designed to be plugged into a 120-v outlet.

a heater is plugged into 120v wall outlet. if the resistance in the heater is 15ohms what is the power used
8,354 results
math
a heater is plugged into 120v wall outlet. if the resistance in the heater is 15ohms what is the power used

asked by Julie on February 13, 2014
College Physics
A 1500-W heater is designed to be plugged into a 120-V outlet. What current will flow through the heating coil when the heater is plugged in? I = A What is R , the resistance of the heater? How long does it take to raise the temperature of the air in a

asked by Lanise on February 6, 2010
Physics
The heating element of a simple heater consists of a 2.2m–long, 0.70mm–diameter nichrome wire. When plugged into a 120 V outlet, the heater draws 7.5 A of current when hot. I found that the wire’s resistance when it was hot was 16 ohms. Now using this

asked by Kayla on October 21, 2011
Physics
An electric immersion heater is rated 5 A when connected to a 120V circuit. What is the resistance of the heater? If it takes 168 KJ to heat 500 ml of water from 20 deg C to boiling, how long does it take to heat the water?

asked by Don on May 18, 2012
Science: Physics
An electric heater of power 2500 W is connected to a voltage of 230 V. i) Calculate the electric current going through the heater. ii) What is the resistance of the heater? iii) How much energy does it consume in a year, if it is switched on 15 min every

asked by karem on December 22, 2016

College Physics
On average, an electric water heater operates for 3.4h each day. If the cost of electricity is $0.3 kWh, what is the cost of operating the heater during a 30-day month? The power of a typical electric water heater is 4500 W. Cost= Dollars What is the

asked by Lanise on February 6, 2010
Physic
These three are connected to 240V main supply : Grill = 6A Desk lamp = 0.6A Convector heater = 4.5 a(ii) which of these has the greatest resistance ? Explain how you can tell. (ii) calculate the resistance of the grill (iii) calculate the power rating of

asked by Janice on June 4, 2011
physics
When a voltage of 120 V is impressed across an electric heater, a current of 0.22 A will flow through the heater if the resistance is __ Omega.

asked by Alyson on October 27, 2009
Science
Our electricity bills consist of many different forms of energy use. In order to be able to make estimates on how much different appliances use electricity and how much savings could be done by investing less electricity consuming ones, you need to have

asked by karem on December 21, 2016
Math
An energy saver heater uses 24% less energy than the older heater model. The older heater uses $350 worth of energy per year. A homeowner replaces his older heater with the new, energy saving heater. Each year how much will he save?

asked by Jenny on November 28, 2016
Physics
An immersion heater of resistance R converts electrical energy into thermal energy that is transferred to the liquid in which the heater is immersed. If the current in the heater is I, the thermal energy transferred to the liquid in time t is ? The answer

asked by Amanda S. on February 19, 2011
physics
What is the required resistance of an immersion heater that will increase the temperature of 1.5kg of water from 10C to 50C in 10 min while opperating at 120V? The answer is 24.2 ohms. I don’t know what equation to use to solve this question. Please help

asked by Anonymous on February 23, 2008
Law
Suzy Smith contracted to purchase a pool heater from Sunkissed Pools. As part of the $4,000 contract, Sunkissed agreed to install the pool heater, which was delivered to Smith’s home and left in the driveway. The heater was too heavy for Smith to lift,

asked by AnaBrigitte on March 24, 2011
math
A hot water heater measures 20″ in diameter. What is the area of a metal base for the water heater, assuming a four-inch overhang for the base beyond the edge of the heater? (Round to the nearest tenth.)

asked by a on May 28, 2013
Math
A hot water heater measures 20″ in diameter. What is the area of a metal base for the water heater, assuming a two-inch overhang for the base beyond the edge of the heater?

asked by Stacey on June 17, 2013

electron theory and ohm law
if the 5-ohm heater in problem 15 is placed with a 15-ohm heater, what current will the 15-ohm heater draw from the same power supply?

asked by roland on November 25, 2015
electrical principles
Four resistors , each of 240ohms are connected in parallel , and the group then joined in series with a heater of 40ohms resistance. Then complete circuit is connected to a 240volts supply . Calculate total resistance in the circuit , the power dissipated

asked by Achwil Solo on March 19, 2015
Physics
An electric heater the temperature of 120g of water in a thin light vessel through 10k in 2 minutes, when placed in 70g of water contained in a metal vessel of mass 0.55kg the temperature rises through 9k in the same time. Calculate from the above The heat

asked by Anne on February 21, 2017
physics
an electric heater provides 2kW of power when connected to a 120 V potential difference. what is the current through the heater?

asked by Musha on February 10, 2011
Physics
A 210W heater is placed in 2KG of water.whattemperature rise is produced if the heater is switched on for 200s?

asked by Elizabeth Chitomombo on September 7, 2018
Physics
A bathroom heater uses 10.5 A of current when connected to a 120. V potential difference. How much power does this heater dissipate?

asked by austin on May 23, 2018
Physics
A circuit contains sic 60-W lamps with a resistance of 240-ohm each and a 10.0-ohm heater connected in parallel. The voltage across the circuit is 120 V. Find the current in the circuit for the following situations:::: a. four lamps are turned on b. all of

asked by Priscilla on February 26, 2010
Physics
A 210W heater is placed in 2KG of water. What temperature rise is produced if the heater is switched on for 200 seconds?

asked by SMK on February 10, 2012
AP Physics
You go to kitchen to boil water. You pour 280 gram of water to a container, and put the container on a 293 W electric heater. Assume that all the heat from the heater is used to heat the water. The specific heat of water is 4.19 J/g ° C. As always, be

asked by Sasami on December 3, 2009
industrial process
the exhaust gases from an oil engine are passed through a water heater. the gasses have a specific heat of 1.0467KJ/kg-K and the temperature falls from 420 degree Celsius to 150 degree Celsius is flowing through the heater. the flow being 25 Kg/min. if the

asked by ghie on September 18, 2015

Physics
A 1500 W room heater is used daily for 4 hours during winter. If the cost per kWh is $0.5, what is the monthly (30 days) expense in using the room heater?

asked by help please? on February 2, 2013
physics
A 150L water heater is rated at 8kW. If 20%if its heat escapes, how long does the heater take to raise the temp of 150-L of water from 10 to 60 degrees C

asked by Agata on November 15, 2011
physics
why does an heater with a fan is more efficient than a similar heater that doesn’t have a fan? It distributes the heat throughout the space (room) that is being heated.

asked by Emma on May 4, 2007
physics
given that the total mass of the plasric cup,heater and thermometer is 350g, determine the heat capacity of liquid x. hetaer heater the liquid with 20W.

asked by kelly on September 7, 2011
Physics
A circuit contains sic 60-W lamps with a resistance of 240-ohm each and a 10.0-ohm heater connected in parallel. The voltage across the circuit is 120 V. Find the current in the circuit for the following situations:::: a. four lamps are turned on b. all of

asked by Priscilla on February 26, 2010
science-physics
An electric heater draws a a current of 10A from a 220 V supply .What is the cost of using the heater for 5 hours everyday for 30 dats if the cost of 1 unit (1 kWh)is 60 paise(indian currency)

asked by Michael on November 20, 2009
Science
in a homes central heating system when the room temperature measured by the thermostat reaches a set value the thermostat sends a message to the heater and the heater switches off These action are an examples of a

asked by Leila on September 14, 2016
Science
In a home’s central heating system when the room temperature measured by thermostat reaches a set value, the thermostat sends a message to the heater, and the heater switches off. These actions are an example of: A. a model. B. feedback. C. input. D. A

asked by Micheal on September 20, 2016
physics
An electric heater used to boil small amounts of water consists of a 25-Ω coil that is immersed directly in the water. It operates from a 60-V socket. How much time is required for this heater to raise the temperature of 0.50 kg of water from 29° C to

asked by Dee on January 27, 2014
Physics
An electric space heater draws 15.5 A from a 120 V source. It is operated, on the average, for 4.0 h each day. (b) How much energy in kWh does in consume in 30 days? (c) At 11 per kWh, how much does it cost to operate the heater for 30 days?

asked by Billy on April 15, 2013

physics
An electric space heater draws 15.5 A from a 120 V source. It is operated, on the average, for 5.0 h each day. How much energy in kWh does in consume in 30 days? At 11 per kWh, how much does it cost to operate the heater for 30 days?

asked by Anonymous on March 3, 2011
physical science
A 150-L water heater is rated at 8 kW .If 20 percent of its heat escapes, how long does the heater take to raise the temperature of 150 L of water from 10C to 60C?

asked by jake on March 16, 2013
physcial science
Does a 5000-watt heater use twice the energy of a 2500-watt heater. What calculation do I need to do to compare these and answer the question? It does while it is on. But if it is controlled by a thermostat, it needs to be on only half as long to maintain

asked by dave on June 25, 2007
Chemistry
A portable electric water heater transfers 255 watts (W of power to 5.5 L of water, where 1 W=1J/s.How much time (in minutes) will it take for the water heater to heat the 5.5 L of water from 27∘C to 49∘C? (Assume that the water has a density of 1.0

asked by Lisa on September 12, 2014
physics
A hose contains 20 lamps of 200 W for each lamp and a heater of power 1500 W. they are all connected to supply voltage of 240 volt. Calculate; (a) The total current when all loads operates at the same time. (b) Total energy when 10 lamps and the heater

asked by fady on May 16, 2017
Physics
An electric heater that produces 860 W (1 W = 1 J/s) of power is used to vaporize water. How much water at 100 0C can be changed to steam in 5 min by the heater? Use Lv = 2.25×106 J/kg for water at 100 0C and express your final answer in grams.

asked by Anonymous on June 7, 2016
Physics Q
If a water heater has a capacity of 54.4 gallons and a 4910 W heating element, how much time is required to raise the temperature of the water from 19.8oC to 60.0oC? Assume that the heater is well insulated and no water is withdrawn from the tank during

asked by Emma on November 10, 2012
Physics!
If a water heater has a capacity of 54.4 gallons and a 4910 W heating element, how much time is required to raise the temperature of the water from 19.8oC to 60.0oC? Assume that the heater is well insulated and no water is withdrawn from the tank during

asked by jake on November 11, 2012
science
Minska has a problem. When she turns on a lamp, the lamp doesn’t light. She wonders if the lamp is plugged into the outlet. She checks the outlet and discovers that it is plugged in. Which stage of the scientific method is Minska in when she looks at the

asked by ant on September 6, 2010
science
Minska has a problem. When she turns on a lamp, the lamp doesn’t light. She wonders if the lamp is plugged into the outlet. She checks the outlet and discovers that it is plugged in. Which stage of the scientific method is Minska in when she looks at the

asked by ant on September 6, 2010

science
Minska has a problem. When she turns on a lamp, the lamp doesn’t light. She wonders if the lamp is plugged into the outlet. She checks the outlet and discovers that it is plugged in. Which stage of the scientific method is Minska in when she looks at the

asked by Happy Labor Day!!!! on September 6, 2010
physics
How long would it take a 1 200 W heater to melt 1.00 kg of ice at -12.0°C, assuming all the energy from the heater is absorbed by the ice? (Assume the specific heat of the ice is 2 090 J/kg · °C and the latent heat of fusion of water is 3.33 105 J/kg.)

asked by olive on May 4, 2010
Physics
A lamp (R = 151 ), an electric heater (R = 24 ), and a fan (R = 49 ) are connected in parallel across a 121 V line. What total current is supplied to the circuit? What is the voltage across the fan? What is the current in the lamp? What power is expended

asked by chuck on October 4, 2010
Science: Physics
We use an electric immersion heater to heat 2,0 liters water having temperature of 20C to the boiling point. Specific heat capacity of water is 4,19 kJ/(kg c). The power of the heater is 1,50 kW and efficiency of heating is 80 %. How much time does the

asked by karem on December 22, 2016
physics
Water flows at 0.865 m/s from a hot water heater, through a 450kPa pressure regulator. The pressure in the pipe supplying an upstairs bathtub 3.70 m above the heater is 414kPa . What’s the flow speed in this pipe?

asked by mohammad on November 12, 2011
math
A water heater has a diameter of 18 inches. It sits in a drain pan that has a diameter of 22 inches and a height of 2 inches, as modeled in the diagram below. Water that leaks out of the water heater sits in the drain pan. Which of the following is closest

asked by Tanya on March 19, 2014
Physics
A small electric immersion heater is used to boil 191.0 g of water for a cup of instant coffee. The heater is labeled 355.0 W, which means that it converts electrical energy to heat at this rate. Calculate the time required to bring this water from 12.0°C

asked by Courtney on March 21, 2008
Physics
A small electric immersion heater is used to boil 191.0 g of water for a cup of instant coffee. The heater is labeled 355.0 W, which means that it converts electrical energy to heat at this rate. Calculate the time required to bring this water from 12.0°C

asked by Josh G. on March 25, 2008
physics
A portable electric heater uses 23.8 A of current. The manufacturer recommends that an extension cord attached to the heater receive no more than 2.60 W of power per meter of length. What is the smallest radius of copper (resistivity 1.72 x 10-8 Ω·m)

asked by Anonymous on February 25, 2013
Chemistry
An office heater puts out 2070 Btus (British thermal units) of energy in the form of heat per hour. Given that 1 Btu = 1.055 kJ, how many megajoules of energy in the form of heat can be produced per year (365 days) by the heater (assume continuous

asked by Katie on February 1, 2014

Chemistry
An office heater puts out 2070 Btus (British thermal units) of energy in the form of heat per hour. Given that 1 Btu = 1.055 kJ, how many megajoules of energy in the form of heat can be produced per year (365 days) by the heater (assume continuous

asked by Cain on January 29, 2014
physics
a 25v heater has two elements, one of which is missing. if the resistance of the remaining element is measured to be 50 ohm,what must the resistance of a second element be when connected in parallel to maintain a current of 1 amp.

asked by suzy on February 27, 2016
science
an electric heater draws a current of 10A when connected to a 200 V supply. what current will the heater draw when it is connected to a 220 V supply.

asked by MOSTWWANTED on May 17, 2016
chem
I got through the first part easily, got -352.9kJ Having trouble with the second part “The meals-ready-to-eat (MREs) in the military can be heated on a flameless heater. The source of energy in the heater is shown below. Mg(s) + 2 H2O(l) Mg(OH)2(s) + H2(g)

asked by Anonymous on November 20, 2010
Physics
The recovery time of a hot water heater is the time required to heat all the water in the unit to the desired temperature. Suppose that a 62-gal (1.00 gal = 3.79 x 10-3 m3) unit starts with cold water at 11 °C and delivers hot water at 53 °C. The unit is

asked by Anonymous on February 18, 2013
physics
The recovery time of a hot water heater is the time required to heat all the water in the unit to the desired temperature. Suppose that a 62-gal (1.00 gal = 3.79 x 10-3 m3) unit starts with cold water at 11 °C and delivers hot water at 53 °C. The unit is

asked by Anonymous on February 18, 2013
physics
What is the required resistance of an immersion heater that will increase the temperature of 2.00 kg of water from 10.0°C to 50.0°C in 9.0 min while operating at 120 V?

asked by Machelle Butts on February 16, 2010
physics
Water flows at 0.860m/s from a hot water heater, through a 450-kPa pressure regulator. The pressure in the pipe supplying an upstairs bathtub 3.70 m above the heater is 414-kPa. What’s the flow speed in this pipe?

asked by sandra on November 19, 2013
physics
Water flows at 0.830 m/s from a hot water heater, through a 450-kPa pressure regulator. The pressure in the pipe supplying an upstairs bathtub 3.70 m above the heater is 414-kPa. 1. What’s the flow speed in this pipe?

asked by josh on June 26, 2018
scinence
Minska has a problem. When she turns on a lamp, the lamp doesn’t light. She wonders if the lamp is plugged into the outlet. She checks the outlet and discovers that it is plugged in. After Minska concludes that her explanation didn’t fit the evidence, what

asked by Happy Labor Day!!!!!!!!!!! on September 6, 2010

Chemistry
A portable electric water heater transfers 255 watts (W) of power to 5.5 L of water, where 1 W = 1 J/s. How much time (in minutes) will it take for the water heater to heat the 5.5 L of water from 25 degrees celsius to 42 degrees celsius? (Assume that the

asked by Elle on February 9, 2012
Physics
Your whole family has taken showers before you, dropping the temperature in the water heater to 18 degrees Celsius. If the water heater holds 150 kg of water, how much energy will it take to bring it to 50 degrees Celsius? If the energy is supplied by a 5

asked by Jennifer on July 14, 2011
physics
an electric heater with a resistance of 40 requires 220v across its terminals. a,what is the power dissipated in the resistor b,how much heat is transferred in 1hour

asked by suzy on February 25, 2016
physics
What is the required resistance of an immersion heater that will melt 6.39 kg of ice at 0°C in 36 min while operating at 110 V? im not too sure how to do this because delta_T=0. With the equations im using, i get 0 but its not the answer and im not quite

asked by Mitch on May 19, 2010
Physical Science
Julia and Wayne heat their house during the winter with an electric heater. The thermostat on the heater is set to 20 °C and the thermostat is cycling on and off as it keeps the room temperature stable. Julia walks out of the room leaving the light on.

asked by Raven on October 17, 2010
thermodynamics
Julia and Wayne heat their house during the winter with an electric heater. The thermostat on the heater is set to 20°C and the thermostat is cycling on and off as it keeps the room temperature stable. Julia walks out of the room leaving the lights on.

asked by seb on August 31, 2013
environmental engineering computations
A propane gas (C3H8) heater burns propane at a rate of 500 grams per hour. a) What is the oxygen consumption rate? (in g O2/hr.) b) If the heater uses a blower to provide outside air (0°C, 1 atm) for combustion, what is the minimum air flow rate the

asked by ally on April 23, 2018
physics
The heating element of a water heater in an apartment building has a maximum power output of 29 kW. Four residents of the building take showers at the same time, and each receives heated water at a volume flow rate of 12×10-5 m3/s. If the water going into

asked by krissy on November 17, 2015
physics
. A water heater can has a power of 350 W. It is placed in a container filled with 1 litres of water with a temperature of 40 ºC. The heater is then allow to run for 1 hour. How much water will there be left in the container after 1 hour? (Specific heat

asked by justin on August 7, 2011
Physics
what is the required resistance of an immersion heater that will increase the temperature of 1.50 kg of water from 10 degrees C to 50 degrees C in 10 minutes while operating 120 V?

asked by Mini on February 7, 2011

Physics
what is the required resistance of an immersion heater that will increase the temperature of 1.50 kg of water from 10 degrees C to 50 degrees C in 10 minutes while operating 120 V?

asked by Kunal on February 7, 2011
physics
an electric hot water heater takes in cold water at 13.0 degrees celsius and delivers hot water. the hot water has a constant temperature of 45 degrees celsius when the “hot” faucet is left open all the times, and the volume flow rate is 5.0 x 10 ^-6

asked by Anonymous on June 18, 2014
Math
For each 10-degree adjustment on your water heater thermostat, you can reduce carbon dioxide emissions by 500 pounds a year. By how many pounds will you reduce your carbon dioxide footprint if you turn down your water heater thermostat from 140¢ªF to

asked by Kristi on April 8, 2013
chem Help please!
A water heater is fueled by the combustion of propane as described by the following reaction: C3H8(g) + 5 O2(g) –> 3 CO2(g) + 4 H2O(l) a) Determine how much heat is released if 11.2 moles of propane are burned at 298 K and at a constant pressure of 1.00

asked by Kjd on October 20, 2012
Physics
A circuit contains six 270 lamps and a 18.0 heater connected in parallel. The voltage across the circuit is 120 V. (a) What is the current in the circuit when four lamps are turned on? (b) What is the current in the circuit when all lamps are on? (c) What

asked by Billy on April 14, 2013
Science
Energy management has become a crucial field in increasing the efficiency of our everyday use of energy. One of the most energy consuming activities is the boiling of water. In order to understand the energy consumption, you need to have understanding on

asked by karem on December 21, 2016
Physics
24 kg of water are heated by a thermostatically controlled 4Kw electric heater. The thermostat switches the heater on at 60 degree centigrade and off at 65 degree centigrade. If the time between switching off and switching on is 3.0 min, what will be the

asked by Edwin on March 14, 2010
Physics
A piece of Nichrome wire has a radius of 8.0 10-4 m. It is used in a laboratory to make a heater that dissipates 2.00 102 W of power when connected to a voltage source of 120 V. Ignoring the effect of temperature on resistance, estimate the necessary

asked by Mary on September 7, 2007
Physics

1. Ten Christmas lights are connected in series and plugged into a 120 V wall outlet. Each light is identical and can be thought of as a resistor. a) What should the value of this resistance be if the total string is to dissipate 50 W? b) How much power

asked by Bartholomew on September 20, 2010
Physics

1. Ten Christmas lights are connected in series and plugged into a 120 V wall outlet. Each light is identical and can be thought of as a resistor. a) What should the value of this resistance be if the total string is to dissipate 50 W? b) How much power

asked by Sam on September 20, 2010

physics
what should be the resistance of a heating coil which will be used to raise the temperature of 500 grams of water from 28 degrees celcius to 100 degrees celcius in 2 minutes, assuming that 25% of the heat is lost? the heater utilizes 110 volts.

asked by Anonymous on March 27, 2011
Science

  1. An electric space heater draws 15.0 A from a 120 V source. It is operated, on average, for 5.0h (hours) each day. a) How much power does the heater use and b) At $.10 per kWh, what does it cost to operate the heater for 30 days? 2. Suppose each person

asked by Carly on May 15, 2012
Electricity
1) How much will it cost to run a 1500-watt swimming pool heater continuously for 5 hours if the utility company is charging 10 cent per kWh? 2) Determine the resistance at 20 0c, of 25m of solid aluminum round wire having a radius of 2mm. (Recall the

asked by anonymous on March 4, 2019
Foreing languages
Can you please check the following sentences? Thank you. 1) The fire officer warned us not to leave the heater on. He warned us against leaving the heater on. (are they both possible?) 2) Opium is widely used in medicine to ease bodily pains. Can you think

asked by John on July 2, 2012
science

  1. in a homes central heating system, when the room temperature measured by the thermostat reaches a set value, the thermostat sends a message to the heater, and the heater switches off. these actions are an example of, a. a model b. feedback c. input. d.

asked by Puggie on August 24, 2018
Science
What is the current draw of a 2 kW heater when operating at 240 V?

asked by Evan on January 16, 2013
Physics
1) On the construction site an electric crane is used to lift materials to the 10th floor. A 180 kW motor requires 2.0 minutes to lift a 10500 kg load if bricks 218 m. How efficient is the crane? 2. Burning 1.0 kg of coal releases 33 MJ of energy. This

asked by Lucina on December 31, 2014
IGCSE chemistry
ice on a windscreen would dissapear as you drive along even without the heater on.Explain why this happens

asked by annonymos on February 1, 2009
physics-series and parellel circuits
I’ll try to explain the schmatic drawing… a 120V battery, total of 12A, leads into a 8ohm resistor (R1), then breaks off into two parallel lines, R2 and R3. the resistance is unknown in R2, and in R3 the resistance is 3 ohms. I need to find the Amperage

asked by Dav e on May 20, 2012
Math -word problem
There is a room 10 feet high by 10 feet wide by 10 feet in length. On one wall, there is an electrical outlet 1 foot from the floor and centered five feet from each side of the wall. On the opposite wall, one foot from the ceiling and centered five feet

asked by Mary on November 9, 2014

Chemistry
Can carbon monoxide leak (from a fireplace, barbeque, water heater)?

asked by Panda on November 7, 2007
physics
An electric heater raises the temperature of 120g of water in a thin light vessel through 10K in 2mins, when placed in 70g of water contained in a metal vessel of mass 0.55kg the temperature rises through 9K in the same time. Calculate from the above:

asked by Anonymous on September 13, 2018
Physics
An electric heater raises the temperature of 120g of water in a thin light vessel through 10K in 2mins, when placed in 70g of water contained in a metal vessel of mass 0.55kg the temperature rises through 9K in the same time. Calculate from the above:

asked by Busola on January 10, 2017
physics
an electric heater raises the temperature of 120g of water in a thin light vessel through 10K in 2mins, when placed in 70g of water contained in a metal vessel of mass 0.55kg the temperature rises through 9K in the same time. Calculate from the above:

asked by fiyin on January 10, 2017
Physics
What is the peak current through a 400–W room heater that operates on 120–V AC power?

asked by Ashton on September 14, 2014

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