Tuesday
March 28, 2017

Number of results: 932

math
In a normal month you use 1200 kWh of electricity. Your electricity provider has decided to increase the rate it charges for electricity by \$0.05 per kWh. If you continue to use electricity at the same rate, how much more will it cost for one year? explain plz!!!
October 29, 2013 by anonymous0.1

science
Which of the following statement best describes the two different types of electrical energy involved in the situation above? 1.Both the lightning and the electricity used to light the floor lamp are forms of static electricity. 2. Both the lightning and the electricity used ...
May 28, 2016 by miss

essay: inventions
I have to write an essay for my english class. The "subject" is inventions. I came up with the phone, the car, electricity, and peanut butter. Peanut butter was more of a joke. I think that I should do electricity. If I did electricity, I could put different things that we ...
January 22, 2012 by 12-year-old-poet

statistics
The quarterly seasonal indexes for a firm’s electricity consumption are 115, 92, 81, and 112 for quarters I-IV. It has been forecast that electricity consumption will be 850,000 kilowatt-hours during 2008. Forecast electricity consumption for each quarter of 2008
August 16, 2009 by Yadira M

chemistry
22. Choose the best description for a solid held together by London forces. A. This substance melts at -30 °C to give a liquid that does not conduct electricity. B. This substance melts at 650 °C and both the solid and liquid phases conduct electricity. C. This substance ...
February 13, 2011 by Kathy R

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?
December 7, 2010 by Mike

physics
if a electricity genreter move with the speed of 60km/h how much electricity they generate in 1 minute in volt
September 8, 2014 by rahul

Science
Why do we have an electricity crisis? What will happen if we don't save electricity?
April 15, 2009 by Rochelle

Science
I need help with static electricity and generating current electricity.
November 13, 2012 by Aamira

The monthly cost of electricity in Smithville is determined by the function C(e) = \$0.16e + \$24.54, where e is the amount of electricity used in kilowatt-hours (kWh) and C(e) is the total cost. If the Fox family used 872 kWh of electricity last month, how much was their bill? ...

physics
explain the close relationship between magnetism and electricity? and How can electricity produce magnetism, and magnetism produce electricity.
July 3, 2009 by Leslie

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 understanding on ...
December 21, 2016 by karem

chemistry
Suppose a fuel-cell generator was used to produce electricity for a house. If each H2 molecule produces 2e- , how many kilograms of hydrogen would be required to generate the electricity needed for a typical house? Assume the home uses about 850 kWh of electricity per month, ...
July 11, 2010 by seth

chem
Suppose a hydrogen-oxygen fuel-cell generator was used to produce electricity for a house. Use the balanced redox reactions and the standard cell potential to predict the volume of hydrogen gas (at STP) required each month to generate the electricity needed for a typical house...
August 9, 2010 by Anonymous

Chemistry
Suppose a fuel-cell generator was used to produce electricity for a house. If each H2 molecule produces 2e- how many kilograms of hydrogen would be required to generate the electricity needed for a typical house? Assume the home uses about 850 kWh of electricity per month, ...
April 13, 2012 by Anonymous

Chemistry
Suppose a fuel-cell generator was used to produce electricity for a house. If each H2 molecule produces 2e-, how many kilograms of hydrogen would be required to generate the electricity needed for a typical house? Assume the home uses about 850 kWh of electricity per month, ...
July 30, 2011 by norma

physics
Your electricity usage for a one month period is 500 kilowatt-hours. Assuming one month is equal to 30 days and that the electricity usage is uniform across the whole month, what would be the velocity of a 1 kg mass if it was given the kinetic energy equivalent to one day's ...
November 3, 2011 by pakilina

Chemistry
Suppose a hydrogen-oxygen fuel-cell generator was used to produce electricity for a house. Use the balanced redox reactions and the standard cell potential to predict the volume of hydrogen gas (at STP) required each month to generate the electricity needed for a typical house...
April 13, 2010 by Katelynn

Physics
Hi. This question is from my own point of view based on electricity. Is it possible in theory to have electricity passed through wireless rather than using wires????
June 17, 2013 by anonymous

PHysics
describe briefly how a generator works. Well, I'm in the electricity unit of my course, so would this mean I have to describe how electricity's generated?
December 28, 2008 by Jane

Science
Solid table salt does not conduct electricity. How does dissolving salt in water allow electricity to flow?
December 1, 2009 by Easton

Chemistry
A household receives a \$155 electricity bill. The cost of electricity is \$0.129/kWh.How much energy, in joules, did the household use?
September 7, 2014 by Anonymous

science
Why are plasmas able to conduct electricity? Plasmas are electricity: all ions, free to move.
January 23, 2007 by Ryan

science
A certain quantity of electricity deposits 0.54grams of silver nitrate solution. What volume of H2 will be liberated by the same quantity of electricity at 27 ° C and 750 mm of Hg pressure
August 26, 2015 by Navneeta

Science 2 questions
how and where is electricity generated in British Columbia, Canada? describe how most of the electricity is generated in England or another country. But it must be different than what occurs in B.C. Please help, thanks:)
April 9, 2013 by Olly

physics
Can water,air and earth conduct electricity? If yes, then explain how they conduct electricity.
February 3, 2012 by mikylexes

physics
a family goes on vacation for a week and leaves on a fan that consumes electricity at the rate of 200 watts. If the electricity is \$0.14/kWh, how much does it cost to run the fan during this time?
August 9, 2014 by kristen

math
The daily electricity bill of a car manufacturing company can be modeled by the function C(x) = 800 – 10x + 0.25x^2, where C is the daily electricity bill, and x is the number of cars made each day. How many cars should the company make to pay the lowest amount for ...
December 7, 2016 by Jalen

English
1. We can save environment when we don't make junk any more. 2. If you run every day, you will get health. 3. We can save the electricity when we turn off the computer. ==================== Q1: Are they all grammatical? Q2: Do we have to use 'the' before electricity or not?
April 29, 2015 by rfvv

Science
When people want to use water to create electricity they generally build a dam to hold the water back, creating a large lake behind the dam. Why is it necessary to hold the water back with a dam in order to produce electricity? A)It increases the amount of water available. B)...
April 4, 2012 by Mia pleaseee helppp

Science
List ways simple plants affect your life each day. (HINT: Where do electricity and heat for homes come from?) food, heat and electricity(from fossils and coal and oil), cars (gasoline from oil), etc.
February 7, 2007 by Jessica

maths
The monthly standing charge for a electrical company is €12.50 plus a cost of €0.16 per unit of electricity used. A customers monthly bill was €156.18. Determine how many units of electricity the customer used in that month.
May 3, 2013 by james

Chem
The best solar panels currently available are about 13% efficient in converting sunlight to electricity. A typical home will use about 40. kWh of electricity a day. Assuming 8 hours of useful sunlight per day, calculate the minimum solar panel surface area necessary to provide...
October 20, 2006 by Joe

Physics
How can you explain work, in regards to electricity? I understand it as the product of energy used, usually displacement. I cant understand or explain it as far as electricity is concerned. I'm not sure if I understand it at all.
June 19, 2016 by Steve

Chemistry
Regarding conductivity: 1. If a solution has a high conductivity, it indicates that there are a lot of __________________ in solution. [Answer: ions] 2. Pure acetic acid does not conduct electricity, nor does pure water, but a mixture of the two does conduct. This is explained...
November 24, 2009 by .

Math
The amount of a monthly electric bill (B, measured in \$) depends on the amount of electricity used that month (E, measured in kWh). A typical public utility charges \$0.12 per kWh for the first 300 kWh used, \$0.17 per kWh for the next 600 kWh used, and \$0.29 per kWh for any ...
December 4, 2012 by alice

English
Look at this electricity bill, Andy. - Wow! That's a lot. ==================== In this short dialogue, what is the part of speech of 'a lot'? 1. The electricity bill is a lot. (Is this sentence grammatical? What other expressions can we use instead of 'a lot'?)
April 16, 2015 by rfvv

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 ...
June 23, 2013 by david

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.
October 5, 2010 by Amber

SCIENCE
Most electricity is produced using fossil fuels. Some people think electricity should be produced using resources such as wind,water,and solar energy. Why might people have this opinion?
November 3, 2011 by Ally

chemistry
1) why do copper 2 sulfate chrystals not conduct electricty? 2)why is copper 2 sulfate solution a good conductor of electricity? 3)why is water a poor conductor of electricity ,
November 22, 2010 by olivia

Electricity
Refrigerators requires a lot of electricity and uses the most electrical energy in most households. Why do refrigerators require so much energy to be operated?
April 8, 2014 by Sasha

Chemistry
Which of these is more efficient on a large/small scale (power generation) and why? burning hydrogen to generate heat to drive turbines to produce electricity or directly producing electricity in a fuel cell reaction Can hydrogen be piped into homes, offices the way natural ...
May 8, 2011 by Alicia

English
To protect the environment, what do you have to do? 1. I'd better use less water. 2. I'd better take the stairs instead of the elevator. 3. I'd better ride my bike to school. 4. I'd better use less electricity. 5. I'd better not use paper cups or plates. 6. I'd better not use ...
April 8, 2014 by rfvv

math
Collect the water and electricity bill for your flat in the month of June, July and August- 2014. Construct a double bar graph for it. a) In which month is the consumption of water more? b) In which month is the consumption of electricity less?
August 27, 2014 by sandra

English
1. What do you think of a solar house? - I think the solar house makes money for us. - I think the solar house makes energy from the sun. - I think the solar house uses the sun to make energy. - I think the solar house uses the sun to make electricity. - I think the solar ...
November 18, 2009 by rfvv

English
1. However hot it is, he never turns on air conditioner to save electricity. 2. However hot it is, he never turns on the air conditioner to save electricity. 3. However hot it is, he never turns on an air conditioner to save electricity. 4. However hot it may be, he never ...
November 25, 2014 by rfvv

i need help with science pls
PLEASE HELP ME! Uranium can supply energy for the world's electricity without emitting harmful greenhouse gases. Which of these statements best describes an outcome of uranium mining? a. The people living near the mines may suffer from diseases due to radiation b. The rivers ...
April 14, 2016 by Oscar

Pie Charts
On the pie chart it reads: 1999 U.S. Electricity Generation by Fuel Type (Billion Kilowat hours) Coal: 1882, 51% Natural Gas:565 15.3% Petroleum: 119, 3.2% Nuclear: 728, 19.7% Hydroelectric: 307, 8.3% Other Renewables: 89, 2.5% What was the total amount of electricity ...
December 13, 2012 by Jake

Chemistry
HCl is a gas at room temperature and does not conduct electricity. Yet when dissolved in water, the solution becomes an excellent conductor. Classify HCl as metallic, ionic, molecular or covalent network, and explain why HCl would conduct electricity in an aqueous solution.
February 25, 2015 by Morgan

English
Sunlight hits the solar cells on the backpack. The solar cells change sunlight into electricity. The electricity is stored in the battery. A cell phone or an MP3 player can be plugged into it. (In this passage, what does 'it' refer to in the last sentence?)
December 7, 2010 by rfvv

science
why is copper used for electrical wiring? The have writen 'Copper is a good conductor of electricity.' Is this correct? Yes, copper is a good conductor of electricity. It also is ductile (easily drawn into wires) (extruded), copper ore is realitively plentiful, etc.
April 1, 2007 by sean

Science
I want to make a small model of how electricity is created by burning coal. I want to show a model that works and be able to light up and very small light bulb(the ones found in an average school microscope). How would I do this. You will find this difficult. I would suggest ...
December 18, 2006 by Gina

Science -Electricity
A complete circuit requires an _____ ____ for electricity to flow from the ______to the _______ in the circuit and ______to the battery. I'm trying to fill in the blanks. I think the first two are electric current think the second two are positive and negative but unsure of ...

science
2) Which is not an example of matter? A. water B. air(i think it this one) C. gold D. sound 3) The amount of space an object occupies is called its ..... A. volume(i think it this one) B. mass C. electricity D. gravity 4) Atoms in a molecule are joined together by.. A. ...
December 12, 2014 by eduarda

Civics
When Hurricane Andrew struck Florida in 1992, many people were responsible for the safety of its citizens. Which was a primary responsibility of the federal government? Researching technology to detect future hurricanes Restoring water and electricity Repairing road signs and ...
January 21, 2015 by Ruby :)

Electricity
How long will it take to? 500 kms of wire, 1 curcuit breaker at one end and light at the other end. How long will it take, once the breaker is on for the electricity to travel 500kms to turn the light on.
August 6, 2010 by Kevin

electricity 188
hi my name is christina and i have an electrical question i need help with. i am taking power engineering electrical 188. the question is: how much will ity cost to use 6 lamps of 100 W each if they burn for 5 hours each evening in a month (30 days). the cost of electricity is...
February 24, 2008 by christina

English
A: What do you think of a solar house. 1. I think the solar house makes money for us. 2. I think we can save energy thanks to the solar house. 3. I think we don't need to spend money on electricity. 4. I think we don't need to pay the electricity fee. 5. I think it is a good ...
November 18, 2010 by rfvv

Environmental Science
True or False: 28. Hydroelectric energy is produced by flowing water turning a turbine which generates electricity. TRUE 32. Geothermal energy is generated when heated water or steam is pumped up from inside the Earth to power a turbine that generates electricity. TRUE Am I ...
March 1, 2010 by y912f

writing
What else can they do when repaired walls separate from beams or restoring sockets carry no electricity What correction should be made to this sentence? 1) Insert a comma after walls 2) change the spelling of separate to seperate 3) Change restoring to restored 4) change the ...
March 3, 2017 by Sandra

Math 2
The instruction booklet for a DVD player says that the player uses about 0.4 kilowatt of electricity per hour. If electricity costs \$0.20 per kilowatt per hour. How much does it cost to run the player for an hour?
May 2, 2014 by Jenny 2

demand for sulfur dioxide by coal-fired electricity electricity producers is: P= 1,000 - 16Q where Q is quantity of sulfur dioxide measured in thousands of tons, and P is price per ton of sulfur dioxide. a)With no policies or restrictions on sulfur emisssions, how much sulfur ...
November 14, 2011 by Sushmitha

Physics
In a hydroelectric dam, water falls 26.0 m and then spins a turbine to generate electricity. What is ∆U of 1.0 kg of water? Suppose the dam is 80% efficient at converting the water's potential energy to electrical energy. How many kilograms of water must pass through the...
November 30, 2009 by Zach

statistics
Ok, so I'm trying to do this for my exam review. I get some of it, but not all: An electric utility is examining the relationship between temperature and electricity use in its service region on warm days. The utility has bivariate data detailing the maximum temperature (...
May 15, 2010 by peter

chemistry
Acids that form ionic solutions will conduct electricity. Acids that form covalent solutions will not conduct electricity. but acids have HYDROGEN in them and hydrogen is a gas is that why the results of the conduction test need to be changed because hydrogen is a non metal ...
November 1, 2008 by lila

science
solar,wind,nuclear,and hydroelectric energy sources are similar in which of the following ways? A. they are all nonrenewable energy sources B. they all require an indirect use of sunlight in order to make electricity C. they are all considered alternative energy sources D. ...
April 29, 2014 by help plzz

Science Help!!!!
Solar,wind,nuclear,and hydorelectric energy sources are similar in which of the following ways? A. They are all nonrenewable energy sources. B. They all require an indirect use of sunlight in order to make electricity. C. They are all considered alternative energy sources. D. ...
December 14, 2014 by callie

English
1. The solar cell could change sunlight directly into electricity. 2. The solar cell could directly change sunlight into electricity. (Are both acceptable? What is the suitable position of 'directly'? Which one is right?)
June 15, 2011 by rfvv

English
1. The solar cell could change sunlight directly into electricity. 2. The solar cell could directly change sunlight into electricity. (Are both the same? Check the position of 'directly' in each xentence, please.)
June 18, 2011 by rfvv

Electricity
Very very urgent please help me... A small ball with mass =0,4g charged with electricity= 3x10^(-10) coulomb is united with the edge of a silk rope with length=8cm. The other edge of the rope is on a big insulating material with concentration of the electric energy: 25x10^(-6...
November 2, 2008 by Ryan

Physics
1.) A lawnmower engine claims to provide 18 hp of power and 6.25 ft lb of torque. If this is true, what must be the rotational speed in RPM? 2.) The conversion of the shaft power of a wind turbine to electricity is the function of the generator. Assume it has an efficiency of ...
November 22, 2010 by Carl

Physics
1.) A lawnmower engine claims to provide 18 hp of power and 6.25 ft lb of torque. If this is true, what must be the rotational speed in RPM? 2.) The conversion of the shaft power of a wind turbine to electricity is the function of the generator. Assume it has an efficiency of ...
November 22, 2010 by Pleseansermi

algebra
Finances. During one month, a homeowner used 500 units of electricity and 100 units of gas for a total cost of \$352. The next month, 400 units of electricity and 150 units of gas were used for a total cost of \$304. Find the cost per unit of gas. Please show the work. Thanks
March 29, 2012 by PLEASE NEED HELP

Accounting
The Fairport Machine Shop wants to develop a cost estimating equation for its monthly cost of electricity. It has the following data: Cost of Electricity (Y) \$13,000 \$15,000 \$17,000 \$14,500 Direct Labor-Hours (X) 1,500 1,700 2,000 1,600 What would be the best equation using ...
November 19, 2014 by Serenity

Physics
An Electricity account shows that a household has used 1400 units of electrical energy during a three month period. Calculate : a)the number of joules of energy used in this time. b)the average number of joulesof energy used perday . c)the average power consumption in watts. d...
June 1, 2011 by Nelly

Physics
An Electricity account shows that a household has used 1400 units of electrical energy during a three month period. Calculate : a)the number of joules of energy used in this time. b)the average number of joulesof energy used perday . c)the average power consumption in watts. d...
June 2, 2011 by Nelly

science
A group of wind turbines operates in an open field. Which statement about the wind turbines is true? Answer A. The wind turbines produce movement of air that does work. B. The wind turbines do work by using electricity to produce power. C. The wind turbines cannot do work ...
April 30, 2013 by Anonymous

demand for sulfur dioxide by coal-fired electricity electricity producers is: P= 1,000 - 16Q where Q is quantity of sulfur dioxide measured in thousands of tons, and P is price per ton of sulfur dioxide. Supposed EPA restricted the number of one-ton sulfur dioxide permits to ...
November 15, 2011 by Sushmitha

math
The electricity that powers our appliances is converted from many sources of energy. About 5/10 is made from coal, about 2/10 from natural gas, and about 2/10 from nuclear power.About how much of our electricity comes from sources other than coal, natural gas, or nuclear power?
January 13, 2015 by Samuel Reingold

electricity
the magnitude of the voltage induced in a conductor moving through a stationary magnetic field depends on the ------- and the------- of the conductor. A)lenght, speed. B)distance, circumference. C)resistance, current. D)color, capacitance. length and speed...you are cutting ...
August 23, 2005 by angela

Chem
Sodium cyanide NaCN is a solid which melts at 564C to give a liquid that conducts electricity, It also dissolves in water to give a conduction solution. Deduce the type of bonding that holds the compound together and why? Write a balanced chemical equation for the reaction ...
March 12, 2007 by Anthony

science
A substance in a solid at room temperature. It is unable to conduct electricity as a solid but can conduct electricity as a liquid. This compound melts at 755 degrees celsius. Would you expect this compound to have ionic bonds, metallic bonds, or covalent bonds? A) metallic ...
February 28, 2008 by JAKE

Science
13. If we used wave energy to produce electricity, which of the following would be a positive environmental benefit? A) We would have power to run lights on navigation buoys B) We would reduce the amount of fossil fuels used to produce electricity and reduce pollution. C) The ...
November 11, 2013 by Cassie

ECON
demand for sulfur dioxide by coal-fired electricity electricity producers is: P= 1,000 - 16Q where Q is quantity of sulfur dioxide measured in thousands of tons, and P is price per ton of sulfur dioxide. a)With no policies or restrictions on sulfur emisssions, how much sulfur ...
November 14, 2011 by Sushmitha

phyical science
A microwave oven has a power requirement of 1235 W. A frozen dinner requires 6.0 min to heat on full power. (a) How much electrical energy (in kWh) is used? 1 kWh (b) If the cost of electricity is 12 cents per kWh, how much does it cost to heat the dinner? 2¢ what is kwh if ...
September 4, 2010 by ashley

college Physics
You are in closed room somehwere on Earth. You have no compas, gyroscope or GPS. No TV, phone, FAX, emil, computer, internet, or cell. No cable no external connections with outside networks. However you have electricity the regular network and a lab with all sort of electric ...
April 12, 2010 by DL

Science
I'm torn between A. and C. Constructing an artificial wetland is not RESTORING an environment unless there was a wetland there in the past. I live in a neighborhood in which the environmentally conscious developers increased the amount of wetland from the existing streams, ...
January 24, 2007 by Ms. Sue

social studies
What was British Columbai's electricity production? British Columbia Hydro and Power Authority (BC Hydro) produces power for that province. It is the third largest electric utility in Canada, serving 1.4 million customers in an area containing over 92 percent of British ...
September 19, 2006 by Unknown

Electronic Basics
Two electronics students are discussing static electricity and electric current. Student A says that a basic property of static electricity is the fact that it can’t be detected. Student B says that an electric current results when electrons move in a conductor. Which of the...
December 28, 2012 by Anonymous

science
What is static electricity?
October 21, 2008 by Any

Scince
What is static electricity?
January 9, 2013 by Solo

Science
I need a disgram on how electricty works. I need the whole process on how its created and how its genertaed ect. Suppose I know nothing on electricity. But I don't want a dry cell electricty, I want a diagram on hydor, of coal, or something like that. Catch my drift. And I ...
January 10, 2007 by Gina

economic
ASSIGNMENT 5: DUE 4.00PM, 4/09/08 1. A competitive firm uses coal to generate electricity. Its supply curve is Q = 300P - 1000, where Q is quantity produced (units of electricity per year), and P is market price of electricity per unit. The production of each unit of ...
September 2, 2008 by qweiop90

physics
why woods do not radiate electricity?
January 9, 2009 by Alveera

physics
5 usage for electricity.(in points)
October 10, 2012 by sumi

Algebra
W=√1/LC, for L, electricity formula.
May 8, 2014 by Boo

comma splice
Dr. frankenstein flung a power switch, ble streamers of static electricity crackled about the table, the creature gave a grunt and opened smoldering eyes. Is there a comma splice in this sentence and how do I rewrite it without one Dr. frankenstein flung a power switch, ble ...
November 21, 2006 by patti

demand for sulfur dioxide by coal-fired electricity electricity producers is: Firm A's demand: P= 1,000 - 80 Q Firm b's demand: P= 1,000 - 20 Q where Q is quantity of sulfur dioxide measured in thousands of tons, and P is price per ton of sulfur dioxide. a)With the market cap ...
November 14, 2011 by Sushmitha

demand for sulfur dioxide by coal-fired electricity electricity producers is: Firm A's demand: P= 1,000 - 80 Q Firm b's demand: P= 1,000 - 20 Q where Q is quantity of sulfur dioxide measured in thousands of tons, and P is price per ton of sulfur dioxide. a)With the market cap ...
November 15, 2011 by Sushmitha

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