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April 18, 2014

Search: If the price of electrical energy is $0.10 per kilowatt · hour, what is the cost of using electrical energy to heat the water in a swimming pool (12.0 m 7.00 m 3.0 m) from 10 to 20° C

Number of results: 103,843

Physics
If the price of electrical energy is $0.10 per kilowatt*hour, what is the cost of using electrical energy to heat the water in a swimming pool (12.0m*9.00m*1.5m) from 15 to 27 degrees Celcius?
Tuesday, February 15, 2011 at 5:45pm by Heather

Physics/Chemistry
If the price of electrical energy is $0.10 per kilowatt*hour, what is the cost of using electrical energy to heat the water in a swimming pool (12.0m*9.00m*1.5m) from 15 to 27 degrees Celcius?
Tuesday, February 15, 2011 at 6:41pm by Heather

Physics Help Please!
If the price of electrical enegy is $0.10 per kilowatt *hour, find the cost of using electrical energy to heat the water in a 12.0m * 9.00m * 1.5m swimming pool from 15 degrees C to 27 degrees C. So the change in temperature is 285.15 , the volume is 162m^3, the specific heat ...
Tuesday, April 6, 2010 at 2:51pm by Dave

Physics
The temperature in an electric oven is 165°C. The temperature at the outer surface in the kitchen is 55°C. The oven (surface area = 1.6 m2) is insulated with material that has a thickness of 0.023 m and a thermal conductivity of 0.045 J/(sm°C). a) How much energy is used to ...
Wednesday, April 18, 2007 at 6:51pm by papito Urgent help needed

physics
If the price of electrical energy is $0.10 per kilo-watt*hour, what is the cost of using electrical energy to heat the water in a swimming pool (12.0m*9.00m*1.5m) from 15 to 27 degree C? Can anyone please give me some hints to do it? Thanks a lot!
Sunday, February 10, 2008 at 5:01pm by Charolett

physics
if it costs 4.5 to 7.5 cents per kilowatt-hour (wind energy) what is the price per kW?
Wednesday, March 26, 2008 at 8:31pm by Tim

Physics
One kilowatt-hour (kWh) is the amount of work or energy generated when one kilowatt of power is supplied for a time of one hour. A kilowatt-hour is the unit of energy used by power companies when figuring your electric bill. Determine the number of joules of energy in one ...
Wednesday, February 29, 2012 at 2:47pm by Candy

physics
If electrical energy cost 5.00 per kilowatt hour, what will be the daily cost of using a 50 watt bulb for 4 hours a day when connected across a 220 volt source?, help please!
Sunday, February 10, 2013 at 3:32am by nitz

physics
An energy-efficient lightbulb, taking in 25.0 W of power, can produce the same level of brightness as a conventional bulb operating at power 100 W. The lifetime of the energy-efficient bulb is 10,000 h and its purchase price is $17.00, whereas the conventional bulb has ...
Monday, November 14, 2011 at 2:50pm by carlton

physics please help
one kilwatt/hour (kWh) is the amount of work or energy generated when one kilowatt of power is supplied fr a time of one hour. a kilowatt/hour is the unit of energy used by power companies when figuring your electric bill. determine the number of joules of energy in one ...
Friday, February 24, 2012 at 3:53pm by taylor

physics
If all the solid waste of 230 million tonnes were burned in waste-to-energy power plants that are 20% efficient, a) how many kilowatt-hours of electrical energy could be produced in a year? Compare this quantity with the total U.S. electrical energy production of approximately...
Tuesday, November 5, 2013 at 2:20pm by nicole

physics
If all the solid waste of 230 million tonnes were burned in waste-to-energy power plants that are 20% efficient, a) how many kilowatt-hours of electrical energy could be produced in a year? Compare this quantity with the total U.S. electrical energy production of approximately...
Tuesday, November 5, 2013 at 2:26pm by nicole

physics
Electric power is found by multiplying ___ by current. volts? potential difference? The kilowatt hour is a unit for measuring ___. energy or electrical energy Thanks
Monday, May 2, 2011 at 10:13pm by Sushmitha

Physics
the question is really flawed if you typed it correctly. One pays for energy, not power. The price on an electric bill is for kw-hrs (energy), not per kilowatt. I dont know what to make of the question at all, especially the second part. Kwatts are not equivalent to joules ...
Wednesday, October 17, 2007 at 4:54pm by bobpursley

Science
Which of these energy changes takes place in a solar cell? A.Heat energy to light energy B.Light energy to electrical energy C.Electrical energy to heat energy D.Thermal energy to electrical energy C?
Monday, April 2, 2012 at 5:42pm by Rezu

Science asap!!!
This question is about energy efficiency. e.g. more efficient A= B C D E Less Efficient my question An old freezer has an energy consumption per year of 350kwh use the equation in the box to calculate the extra cost of using the old freezer for one year compared with using a ...
Friday, September 20, 2013 at 1:17pm by HS

Physical science
If the reading on a electric meter was 2345 kilowatt-hour and the next mouth was 3456 , how much electrical energy was used ?
Tuesday, April 6, 2010 at 8:46pm by Gwen

Physics
At 7.65 cents per kilowatt-hour, what does it cost to operate a 10.0 hp motor for 6.00 hr? At 7.65 cents per kilowatt-hour, what does it cost to leave a 75.0 W light burning 24.0 hours a day?
Sunday, March 6, 2011 at 12:35pm by Ana

algebra
Express each situation as an algebraic expression: 1. An electric company charges $10 a month plus $.15 per kilowatt-hour of electricity used. What is the monthly bill in dollars if K kilowatt-hours are used?
Tuesday, October 26, 2010 at 11:40pm by Anonymous

Someone please help me with science?
1. Which of the following shows the correct sequence of energy transformations when listening to the radio? electrical; kinetic; sound; kinetic; electrical electrical; sound; kinetic; sound; electrical sound; electrical; kinetic; electrical; sound kinetic; sound; electrical; ...
Tuesday, April 16, 2013 at 10:52pm by Rebekah

7TH GRADE SCIENCE?!?!
1. Which of the following shows the correct sequence of energy transformations when listening to the radio? electrical; kinetic; sound; kinetic; electrical electrical; sound; kinetic; sound; electrical sound; electrical; kinetic; electrical; sound kinetic; sound; electrical; ...
Tuesday, April 16, 2013 at 11:41pm by Rebekah

Science
What type of energy from the Sun do plants use to make their own food? A.Chemical Energy B.Sound Energy C.Light Energy D.Heat Energy C? An MP3 player uses the chemical energy in a battery to produce electricity energy. The electrical energy makes the player work.When turned on...
Monday, April 2, 2012 at 6:38pm by Rezu

Physics
Assuming 100% of your energy can be converted to electrical power, and electricity costs $0.10 for 1 kilowatt-hour, how high should you climb to make one penny's worth of electricity? Show all work & units. I have 288.8 watts, and that's as far as I have been able to reach.
Tuesday, October 5, 2010 at 7:00pm by Amber

Science
Molecules that make up matter move constantly.Which of these forms of energy refers to the energy of the moving molecules and why? A.Chemical Energy B.Thermal Energy C.Electrical Energy D.Light Energy Which device can change electrical energy to light and sound energy? A....
Monday, April 2, 2012 at 5:06pm by Rezu

Physics
The average power output of a human heart is 1.3 3 Watts. You had to pay for this energy at Wis consin Energy’s rate of $0.12061 per kWh (kiloWatt hour), what is the cost?
Saturday, March 2, 2013 at 1:35pm by Meder

math
Power companies typically bill customers based on the number of kilowatt-hours used during a single billing period. A kilowatt is a measure of how much power (energy) a customer is using, while a kilowatt-hour is one kilowatt of power being used for one hour. For constant ...
Saturday, March 9, 2013 at 6:56pm by HELLO

Physics
1.FALSE The kilowatt-hour is a unit of energy equivalent to one kilowatt (!!!!) of power expended for one hour of time. 2.TRUE The cables used to transfer electric energy from the generating station to the consumers must be of low resistance to reduce losses due to joule heating.
Tuesday, March 27, 2012 at 1:32pm by Elena

pre cal
Electricity Rates in Florida. Florida Power & Light Company supplies electricity to residential customers for a monthly customer charge of $5.69 plus 8.48 cents per kilowatt-hour for up to 1000 kilowatt-hours. (a) Write a linear equation that relates the monthly charge C, in ...
Wednesday, January 15, 2014 at 1:18am by kisha

pre cal
for a monthly customer charge of $5.69 plus 8.48 cents per kilowatt-hour for up to 1000 kilowatt-hours. (a) Write a linear equation that relates the monthly charge C, in dollars, to the number x of kilowatt-hours used in a month, 0 ≤ x ≤ 1000.
Wednesday, January 15, 2014 at 3:16am by kisha

Physics multiple choice questions
1. Which of the following energy transformations best describes the operation of a solar powered battery charger? (a) electrical energy --> thermal energy --> kinetic energy (b) nuclear energy --> potential energy --> chemical energy (c) thermal energy --> ...
Monday, April 7, 2014 at 12:39pm by Jessica

Physics multiple choice questions
1. Which of the following energy transformations best describes the operation of a solar powered battery charger? (a) electrical energy --> thermal energy --> kinetic energy (b) nuclear energy --> potential energy --> chemical energy (c) thermal energy --> ...
Tuesday, April 8, 2014 at 1:22pm by Jessica

physics
In an electrically heated home, the temperature of the ground in contact with a concrete basement wall is 13.0 oC. The temperature at the inside surface of the wall is 21.1 oC. The wall is 0.19 m thick and has an area of 8.3 m2. Assume that one kilowatt hour of electrical ...
Friday, November 30, 2012 at 9:49pm by Redgy22

physics
If the average household uses electrical energy daily at the rate of 500. W, how much U-235 must undergo fission to supply this need for a year? (assume 200. MeV of energy are generated per fission and that the power plant is 46% efficient). 1. Energy used in Joules per year? ...
Tuesday, March 16, 2010 at 9:09pm by sasha

Stout
A chocolate chip cookie contains about 200 kcal. How many kilowatt-hours of energy per day does it contain. How long could you light a 100-W light bulb with the energy from the cookie?
Sunday, November 14, 2010 at 10:46pm by Linda

Math
How many liters of oil are required to supply the electrical energy needs of an average home for a month? Energy released by burning 1 liter of oil= 1.2 x 10(7th power) Electrical energy used in an average home daily 5 X 10 (7th power) I got 125 liters. Is that correct?
Thursday, September 20, 2012 at 6:06pm by Sam

physics
An oven is plugged into a 120 V electrical outlet and "cooks" the food by using a 144 ohm resistor light bulb that converts electrical energy to both light and heat energy. If the light bulb converts 75% of the electrical energy to thermal energy, and the oven is used for a ...
Thursday, May 30, 2013 at 8:49am by maddy

science
calculate the cost of using a 100w lamp for 10 hours if electrical energy costs 11.3 per kwh
Friday, September 11, 2009 at 4:50pm by georgie

Chemistry
1. Which metal is the most easily oxidized? A.) highly active metal *B.) moderately active metal C.) slightly active metal D.) an inactive metal 2. What happens in a voltaic cell? *A.) Chemical energy is changed to a electrical energy. B.) Electrical energy is changed to ...
Wednesday, March 27, 2013 at 1:34pm by Jose

Chemistry
1. Which metal is the most easily oxidized? A.) highly active metal *B.) moderately active metal C.) slightly active metal D.) an inactive metal 2. What happens in a voltaic cell? *A.) Chemical energy is changed to a electrical energy. B.) Electrical energy is changed to ...
Wednesday, March 27, 2013 at 2:32pm by Jack

physics
A)When the energy input to gas fired power station is 1000MJ,the electrical energy output is 300MJ.What is the efficiency of the power station in changing the energy in gas into electrical energy b)what form does the 700MJ of lost energy take c)what is the fate of the lost energy
Wednesday, August 3, 2011 at 4:58am by Luc

Physics -- check answers please
1. Which of the following energy transformations best describes the operation of a solar powered battery charger? (a) electrical energy --> thermal energy --> kinetic energy (b) nuclear energy --> potential energy --> chemical energy (c) thermal energy --> ...
Monday, April 7, 2014 at 12:15am by Jessica

physics
Approximately 5.5 X10^6 kg of water fall 50m over Niagara Falls each second. a) What is the decrease in the gravitational potential energy of the water-Earth system each second? b) If all this energy could be converted to electrical energy (can’t happen) at what rate would ...
Wednesday, January 10, 2007 at 8:44pm by Brian

physics
Approximately 5.5 X10^6 kg of water fall 50m over Niagara Falls each second. a) What is the decrease in the gravitational potential energy of the water-Earth system each second? b) If all this energy could be converted to electrical energy (can’t happen) at what rate would ...
Thursday, January 11, 2007 at 2:50pm by Brian

micro economics
Marginal cost is a constant $10 per tire.quantities are measured in thousands per month ans price refers to the wholesale price. marginal cost is a constant $10 per tire. american currently sells brand name tires at a wholesale price of $28.50 and private label tires for a ...
Thursday, February 28, 2008 at 6:40pm by Anonymous

Physics - electricity
An incandescent lamp is marked '120v,75W' a)what is the current in the lamp under normal condition of operation? b)How much does it cost per hour to operate the lamp if the price of electrical energy is $6.00 per unit? Please stop posting under different names. Use ohms law, ...
Tuesday, April 17, 2007 at 10:42am by Charles

Science
Batteries change ____ energy into _____ energy Chemical and electric Converting the suns energy into electricity does not work if it is ____ time or there is ___ weather night and bad? The suns energy can be turned into electrical energy or ___ energy solar? A toaster ...
Wednesday, September 19, 2012 at 8:10pm by Lance

Science
How does an electrical current in a circuit produce thermal, sound, and magnetic energy? The electrical current flows thru devices that convert the electrical energy to mechanical or electomagnetic waves. i have a science project do tommorrow but i need some pictures of the ...
Thursday, March 29, 2007 at 7:58pm by SasukeUchihaFanatic

physics-energy conservation
a mordern power station,or, more correctly, an energy station, converts heat energy into electrical energy at an efficiency od 50% if the station produces electrical energy at a rate of 1.00GW from burning coal, calculate the mass of coal it burns each day. the coal it uses ...
Wednesday, May 9, 2007 at 6:57am by Emma

statistics
6. According to the records of Enersource, an electric company serving the Mississauga area, the mean electricity consumption for all households during winter is 1650 kilowatt-hours per month. Assume that the monthly electricity consumption during winter by all households in ...
Sunday, June 23, 2013 at 9:51pm by david

Math
Bosley's Pet Foods buys dog kibbl for $19.50 per bag, less 40%. The store's overhead is 33 1/3% of the selling price, and the desired profit is 10% of the selling price. (a) At what price per bag should the dog food be sold? (b) At this price, what is the rate of markup on ...
Monday, August 10, 2009 at 11:45pm by Tha

7TH GRADE SCIENCE?!?!
The law of conservation of energy states that _____ is never created or destroyed. (1 point) Unselected answer (0 pts) mass Correct answer (1 pt) energy Unselected answer (0 pts) heat Unselected answer (0 pts) chemicals 1 /1 point 2. Unlike other forms of energy, thermal ...
Tuesday, April 16, 2013 at 11:41pm by Anonymous

physics
The Easy Bake Oven is a common toy for young children who want to emulate the process of cooking. Suppose this oven is plugged into a 120 V electrical outlet and "cooks" the food by using a 144 ohm resistor light bulb that converts electrical energy to both light and heat ...
Thursday, May 30, 2013 at 11:05pm by Julia

chemistry
A frost-free refrigerator uses about 640 kWH of electrical energy per year. Express this amount of energy in J: kJ: Cal:
Sunday, October 19, 2008 at 10:23pm by Lilit***

Physics
Hydro Quebec charges clients by the kilowatt hour. Is this a unit of power, energy or force? If you consume 500kWh per month how would this be expressed in SI units?
Monday, March 26, 2012 at 3:03am by bobby

physics
electricl energy is turned into light energy in a light bulb. electrical energy is turned into sound energy by speakers a nuclear reactor turns nuclear energy into electrical energy. What you could do is set up a 10x10 grid of the types of energy and try to come up with a ...
Sunday, December 19, 2010 at 8:02am by Dr Russ

physics
Information: 1. According to the information on the EERE posting, 22% of the U.S. annual electrical energy consumption is for lighting. The amount of energy is 8.2 Quads, (1.0 Quad = 1015 BTU). This is in agreement with the information given in the International Energy Agency...
Sunday, April 20, 2008 at 8:40pm by Tim

physics
Electrical energy in = (V^2/R)*time (in Joules) (use time = 540 seconds) All of this energy is converted to heat, Q. The electrical energy required is Q = M C *(delta T) = 2000 g*[4.186 J/(deg C*g)]*40 C Use those two equations to solve for R.
Tuesday, February 16, 2010 at 3:40pm by drwls

biology
What are two units of measure for the energy obtained from macronutrients? Energy units. A BTU (British Thermal Unit) is the amount of heat necessary to raise one pound of water by 1 degree Farenheit (F). 1 Joule (J) is the MKS unit of energy, equal to the force of one Newton ...
Saturday, February 3, 2007 at 12:03am by Kathlene

science
A CD player, when playing, gets the energy required to turn the disc, operate a disc-reading laser, and emit an electrical sound signal to speakers, from an electrical source. That electrical energy could come either from a wall outlet or batteries. When trees burn, the mass ...
Sunday, May 10, 2009 at 7:47pm by drwls

Assist me Plzz!
What is the p.d. between 2 points in a circuit if 200J of electrical energy are changed to other forms of energy when 25 coulombs of electric charge pass? If the charge flows in 10 seconds, what is the current? Science help needed here. Vq=energy you know q, and energy.
Tuesday, April 17, 2007 at 8:49am by Demola

physics
(a) A solar collector is 12.0% efficient in gathering solar energy and converting it to heat. If the average intensity of sunlight on one day is 700 W/m2, what area(m^2) should your collector have to gather energy at the rate of 150 W? (b) What is the maximum cost ($)of the ...
Tuesday, July 30, 2013 at 5:14pm by Justin

micro economics
pb = 70 -0.0005qb(brand name) pp = 20-0.0002qp (private label). Marginal cost is a constant $10 per tire.quantities are measured in thousands per month and price refers to the wholesale price. marginal cost is a constant $10 per tire. american currently sells brand name tires ...
Thursday, February 28, 2008 at 6:42pm by Anonymous

natural science
http://www.unitconversion.org/energy/kilojoules-to-kilowatt-hours-conversion.html
Tuesday, November 15, 2011 at 10:38am by Ms. Sue

physics
Each of your pair of answers would be OK, but they probably want volts for #1 and energy for #2 Kilowatt-hour can measure any kind of energy.
Monday, May 2, 2011 at 10:13pm by drwls

Science
Which one of these is a form of stored energy? A. Heat energy B. Light energy C. Electrical energy D. Chemical Energy D?
Monday, April 2, 2012 at 4:26pm by Rezu

math
Consumers pay for electricity by the kilowatt-hour (the amount of electricity used by a 1,000-watt appliance in one hour). If electricity costs 10cents per kilowatt-hour, what is the cost of running a 100-watt lamp for 1. 1 hour? 2. 24 hours? 3. 1 year?
Tuesday, December 7, 2010 at 12:02pm by Mike

science
look at the units electrical energy (in kWh) = power (in kW) x time (in hour) cost of electricity = [electrical energy (in kWh)]*(12 cents/ kWh)
Thursday, February 10, 2011 at 10:10pm by TutorCat

Math
How would you do this problem? At the beginning of the year, the price of gasoline is $1.05 per gallon. The price increased $0.05 per gallon each week for the next 5 weeks. The price then decreased $0.07 per gallon for the next 3 weeks. Find the difference between the cost of ...
Tuesday, August 26, 2008 at 4:24pm by Jillian

chem
Explain, in terms of electrical energy, how the operation of a voltaic cell differs from the operation of an electrolytic cell used in the Hall process. Include both the voltaic cell and the electrolytic cell in your answer. Would this be correct: In a voltaic cell, chemical ...
Monday, April 20, 2009 at 10:59pm by Anonymous

physics
A power plant burns coal and generates an average of 600.0 Megawatts (MW) of electrical power while discharging 900.00 MW as waste heat. Find the total electrical energy generated by the plant in a 30-day period. Coals vary a lot in their energy content. The energy released by...
Monday, January 6, 2014 at 3:58pm by Nika

the big idea of energy
The Big Idea Of Energy is to do with energy being transfered from one form to another. For example...in a lightbulb the electrical energy is turned into light and heat. The electrical energy comes from your house or wherever and then turns into light to light up your lightbulb...
Tuesday, December 5, 2006 at 2:18pm by Anonomous

Physics
kilowatt hour is the unit of energy 1 kWh =3 600 000 J 500 kWh =1800000000 J =1.8•10^9 J = 1.8GJ
Monday, March 26, 2012 at 3:03am by Elena

6th grade
Energy can come in many forms and can be transferred from one form to another. For example a flywheel rotating has a certain mechanical kinetic energy and that can be converted to potential energy by using the flywheel to wind up a rope pulling a weight up in the air. That ...
Friday, February 19, 2010 at 3:54pm by Damon

please
The electrical potential energy loss, q*V = 5*10^-9 J , would equal the kinetic energy gain when it hits the opposite plate, (1/2) M V^2 V = sqrt(2 q V/M) = 100 m/s
Saturday, January 15, 2011 at 11:17pm by drwls

Chemistry
Hoffmans apparatus find out the energy available per mole of water if it is split into h2 and o2 Data 1 mol of gas at NTP is 24.5l 31.2ml of _______ 62.4ml of _______ it looks like this question comes from a lab experiment. You have not provided all the details needed. Were ...
Wednesday, March 7, 2007 at 2:53am by San

Stout
Try some of the following links: http://search.yahoo.com/search?fr=mcafee&p=how+many+kilowatt-hours+of+energy+in+200+kcal Sra
Sunday, November 14, 2010 at 10:46pm by SraJMcGin

physics
The primary difference between a motor and a generator is that one converts electrical energy into mechanical energy (that's the motor) and the other converts mechanical energy into electrical energy (that's the generator).
Wednesday, May 16, 2012 at 11:24am by Elena

Science
What does a source of electrical energy do in an electrical circuit?
Thursday, December 14, 2006 at 6:33pm by Icy Rose

GCSE Physics
The energy value of gas used in a home is measured in KWH. The home owner has a prepayment meter and pays £30 into his account. With a prepayment meter, gas cost 15p per KWH. Use the below equation to calculate the total number of hours that the gas boiler would operate for £...
Saturday, July 20, 2013 at 11:08pm by abu hamza

Math
The materials for each feeder cost $6, and they sell an average of 20 per week at a price of $10 each. They conduct a survey and find that for every dollar increase they lose 2 sales per week. Find a function that models weekly profit in terms of price per feeder
Thursday, October 7, 2010 at 3:09am by Alex

Science
where does this energy conversion occur? gravitional energy to kietic energy to electrical currernt. what i don't understand is what is gravitational energy?
Sunday, October 10, 2010 at 7:40pm by Izzy

algebra
A consumer electronics company sells 6.7 million MP3 players per month at a price of $100 apiece; when the price is lowered to $80, the company sells 10.2 million players per month. How many MP3 players can the company expect to sell per month at a price of $75? (100, 6.7) and...
Saturday, February 26, 2011 at 9:03pm by bianca

Science please
google it Thermal, or heat energy Chemical Energy Electrical Energy w w w . nmsea . o r g /Curriculum/ Primer/ forms _ of _ energy . htm
Tuesday, November 19, 2013 at 7:47pm by Sam

Math
FeatureShop sells 80 stereos per month at a cost of $600 each. The manager knows that for every $10 price increase there will be one less stereo sold per month. What price will produce the greatest revenue?
Thursday, January 22, 2009 at 6:07pm by gagan

Physics
You either copied something wrong, omitted an "h" when typing, or your teacher needs a science refresher course. ENERGY is measured in kilowatt-hours (kwh) not kilowatts (kw). POWER is measured in kilowatts. What you pay for is energy, per kwh. Energy is power times time. ...
Wednesday, October 17, 2007 at 4:54pm by drwls

calculus
Throughout the 20th century, the yearly consumption of electricity in the US increased exponentially at a continuous rate of 7% per year. Assume this trend continues and that the electrical energy consumed in 1900 was 1.4 million megawatt-hours. Find the average yearly ...
Thursday, January 19, 2012 at 3:08pm by Cookie

Math
Yes, the price of a piece of cloth of a given width is determined by the price (P)) per yard (metre) and the length (L) of the cloth. Since the price per unit length (P) is usually a constant, so we can express the price of cloth as Price of cloth = f(L) = P*L which is a ...
Monday, January 31, 2011 at 8:34pm by MathMate

physics
PLEASE EXPLAIN A charge moves a distance of 1.7 cm in the direction of a uniform electric field having a magnitude of 200 N/C. The electrical potential energy of the charge decreases by 9.69095 × 10−19 J as it moves. Find the magnitude of the charge on the moving ...
Tuesday, February 16, 2010 at 6:16pm by Jonathan

physics
A charge moves a distance of 1.4 cm in the direction of a uniform electric field having a magnitude of 244 N/C. The electrical potential energy of the charge decreases by 108.3 × 10−19 J as it moves. Find the magnitude of the charge on the moving particle. The electrical...
Friday, February 8, 2013 at 10:30am by EMily

physics
please check these for me: When a positive charge moves in the direction of the electric field, what happens to the electrical potential energy associated with the charge? a. it increases b. it decreases c. it remains the same d. it sharply increases, and then decreases C A ...
Thursday, March 12, 2009 at 7:09pm by physics

Chemistry
Assume electricity cost 15 cents kw per hour....using the energy requirements.what is the per gram cost of energy to produce Na + AL? Useful info: 2NaCL --> 2Na + CL2 around 600 degree C; 14 KJ per g Na. Al- 2Al2O3-->4Al+3O2 1000 degrees C; 30 KJ per g Al in cryalite (...
Tuesday, November 14, 2006 at 9:24pm by Liliana

Math 11u
A Computer company has been selling 1200 computer games per week at $18 each. Data indicates that for each $1 price increases, there will be a loss of 40 sales per week. It costs $10 to produce each game. Let x represent the number of $1 price increases. a)state the revenue ...
Saturday, July 17, 2010 at 8:20pm by Kerry

math
What text? Unit price usually refers to the price per pound or ounce (in the USA). The unit price usually, but no always, decreases when you buy larger sizes. Most supermarkets are required to post the actual price (per item) in large type and the unit price in small type on ...
Wednesday, June 30, 2010 at 12:59pm by drwls

Math
Could someone answer this question so I understand it. Thanks The marginal price dp/dx at x units of demand per week is proportional to the price p. There is no weekly demand at a price of $100 per unit [p(0)=100], and there is a weekly demand of 8 units at the price of $60.83...
Thursday, April 28, 2011 at 2:10pm by Anonymous

Math
Could someone work this question out so I understand it. Thanks The marginal price dp/dx at x units of demand per week is proportional to the price p. There is no weekly demand at a price of $100 per unit [p(0)=100], and there is a weekly demand of 8 units at the price of $60....
Friday, April 29, 2011 at 4:05pm by Jules

calc
I have everything right but the last question asking how many cases per week The consumer demand equation for tissues is given by q = (97 − p)2, where p is the price per case of tissues and q is the demand in weekly sales. (a) Determine the price elasticity of demand E ...
Monday, October 28, 2013 at 11:22pm by Kyle

Economics
Sandra purchases 5 pounds of coffee and 10 gallons of milk per month when the price of coffee is $10 per pound. She purchases 6 pounds of coffee and 12 gallons of milk per month when the price of coffee is $8 per pound. Sandra’s cross-price elasticity of demand for coffee ...
Tuesday, November 29, 2011 at 12:03pm by Will

brief calculus
I have everything right but the last question asking how many cases per week The consumer demand equation for tissues is given by q = (97 − p)^2, where p is the price per case of tissues and q is the demand in weekly sales. (a) Determine the price elasticity of demand E ...
Tuesday, October 29, 2013 at 1:13am by Kyle

physics
an electrical baseboard heater drawws a current of 6.0A and has a potential difference of 240V. For how long must it remain on to use 220 000 J of electrical energy.
Sunday, December 13, 2009 at 5:34pm by Lexipoo

Math
Could someone work this question out so I understand it. Thanks The marginal price dp/dx at x units of demand per week is proportional to the price p. There is no weekly demand at a price of $100 per unit [p(0)=100], and there is a weekly demand of 8 units at the price of $60....
Friday, April 29, 2011 at 8:03pm by Jules

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