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April 24, 2014

Search: Science (Energy)

Number of results: 32,298

Science
Which 6 are energy from sunlight?? nuclear energy,geothermal energy,tidal energy,fusion energy,wind,hydroelectric energy,solar energy,biomass,fossil fuels,ocean thermal,energy conversion
Monday, November 14, 2011 at 5:18pm by Jason

SCIENCE PLZZ HELP
Which 6 are energy from sunlight?? nuclear energy,geothermal energy,tidal energy,fusion energy,wind,hydroelectric energy,solar energy,biomass,fossil fuels,ocean thermal,energy conversion
Monday, November 14, 2011 at 6:00pm by Jason

Science
During the process of photosynthesis, solar energy is converted into: a. chemical energy. b. heat energy. c. thermal energy. d. mechanical energy. e. nuclear energy. a
Monday, February 26, 2007 at 8:11pm by Dave

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

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

science
a fan uses 150j of mechanical energy, 20j of heat and 75j of sound energy a) what is the total input energy b) what is the total useful output energy c)what is the total wasted energy d) what is the energy efficiency e) what percent of the energy was wasted
Sunday, December 5, 2010 at 3:57pm by Anonymous

science-physics
Q1)which of these energy resources does not originate from the suns energy?:natural gas,oil,geothermal energy,coal Q2)the burning of fossil fuels does not release? potential energy,light energy,sound energy , heat energy?? Q3)at the moment renewable energy sources generate? ...
Monday, November 5, 2007 at 4:44pm by elliot

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

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 8th grade
1. The thermal energy of an object is _____. (1 point) its potential energy its average kinetic energy its potential energy minus its kinetic energy its kinetic energy plus its potential energy Thanks, jessica :)
Tuesday, April 9, 2013 at 8:05pm by jessie

Science
When energy changes forms, the total amount of energy is conserved. However, the amount of useful energy is almost always less than the total amount of energy. Explain the energy conversions and unwanted energy that might be produced by the hinges of a squeaky door.
Wednesday, January 5, 2011 at 6:57pm by Elijah

science
Suppose you put your lunch up on a shelf. Name two kinds of energy it has, and explain why. I think it would have potential energy because it has stored energy being off the ground, but what other energy?
Sunday, January 13, 2013 at 12:39pm by maya

science
1.what similarities do nuclear energy and chemical energy share?pick all that apply A.both are types of kinetic energy. B.both are types of potential energy C.both involve magnetic energy D.both involve stored energy (I PICK B AND D) 3.the energy an object has due to its ...
Wednesday, January 22, 2014 at 8:46pm by Matt

science(answer please)
please answer these 1.what similarities do nuclear energy and chemical energy share?pick all that apply A.both are types of kinetic energy. B.both are types of potential energy C.both involve magnetic energy D.both involve stored energy 3.the energy an object has due to its ...
Wednesday, January 22, 2014 at 8:27pm by Matt

Science
I really need help in Science. Right now in science we are doing renewable energy. For the assignment we have two choices, a house or car of the future, I decided to do a house. The question is, "How could renewable energy sources be used in a house?" For the house you, ...
Wednesday, January 15, 2014 at 4:29pm by SandpitTurtle

Science
Bobbie is playing with his radio-controlled car by using a handheld remote box. What type of energy is being used to power Bobbie's car? a)chemical energy b)electrical energy c)heat energy d)mechanical energy THANKS!!!!!
Thursday, April 12, 2012 at 8:40pm by Sally urgenttt

Science
Bobbie is playing with his radio-controlled car by using a handheld remote box. What type of energy is being used to power Bobbie's car? a)chemical energy b)electrical energy c)heat energy d)mechanical energy THANKS!!!!!
Thursday, April 12, 2012 at 8:58pm by Sally urgenttt

Env Science
Distinguish between high-quality energy and low-quality energy, and give an example of each. Relate these terms to energy efficiency High-quality energy is energy that can be converted to work, with a high conversion efficiency. Two examples are electrical energy and ...
Monday, July 9, 2007 at 11:01am by Kim

Science
A spherical rock rests at the top of a steep hill. the rock has A)Potential Energy B) Chemical energy C)Kinetic energy or D) no energy i think it's A or B but I'm not sure. thanks
Friday, October 14, 2011 at 12:54pm by Jon

Science please
Kinetic energy and Potential energy are often considered to be forms of mechanical energy. List three other forms of energy and state a source for each.
Tuesday, November 19, 2013 at 7:47pm by anon

Science
The Lactic Acid System a. supplies energy needed to walk or cycle continuously b. provides energy to pitch a baseball c. creates energy needed to pass another 5k participant with a burst on energy. d. none of these
Thursday, April 2, 2009 at 8:35pm by Betty

Science
Wil kinetic energy increase or decrease based on the amount of potential energy it starts with?? If potential energy is lost, KEnergy increases. Potential Energy + kinetic energy= constant.
Monday, February 5, 2007 at 7:52pm by Linda

Science
During the process of photosynthesis, plants convert carbon dioxide and water into glucose. Covalent bonds hold the glucose molecules together. The breaking of the covalent bonds during digestion releases energy. the type of energy released is A.nuclear energy B.kinetic energy...
Monday, February 3, 2014 at 4:04pm by hafsah

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
If an object's mechanical energy is equal to its potential energy, how much kinetic energy does it have? how do you know?
Wednesday, October 22, 2008 at 10:23pm by Nell

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

Science
Using water to generate energy,show the steps in this process to describe what kind of energy are represented or energy conversions are taking place.
Wednesday, January 5, 2011 at 7:44pm by Da'shawh Sinkler

Science 8R - help (please read!!!)
Homework - Pick 4 out of the 6 forms (types) of energy and gives an example of each from your house. Types/Forms of Energy 1. Mechanical Energy 2. Electrical Energy 3. Electromagnetic Energy 4. Heat Energy 5. Chemical Energy 6. Nuclear Energy I'm picking heat and mechanical, ...
Monday, November 26, 2012 at 8:39pm by Laruen

science(check answers)
2.how would the kinetic energy of a 12,000-kg train compare with the kinectic energy of a 900-kg compact car if both were traveling at the same speed? A.the trains kinectic energy would be equal to the cars kinectic energy. B.the trains kinectic energy would be greater than ...
Wednesday, January 29, 2014 at 12:37pm by annabelle

science
In the fissioning of uranium, a chain reaction is caused by? ejected neutrons. the enormous energy release. the kinetic energy of the decay products. the conversion of mass to energy.
Monday, March 5, 2012 at 4:00pm by Frank

Earth Science
1. Is it true that since energy cannot be created nor destroyed, the total energy of the river system remains constant? 2. What is the source of energy that powers the water cycle? a. sunlight insolation b. kinetic energy c. radioactive decay d. gravitational potential energy ...
Monday, November 24, 2008 at 1:08pm by John

Science
A ball has a potential energy of 180 J and a kinetic energy of 0 J. After falling 2m, it has a potential energy of 135J. What is its kinetic energy at this point? PLEASE ANSWER THIS I'M STUCK!
Thursday, January 19, 2012 at 9:07pm by Micheal

Science
True/False - A generator that doubles the electrical energy from a wall outlet without any additional input of energy will work. - The total amount of energy in the universe is constant. thank you
Friday, November 21, 2008 at 12:08pm by Jake

physical science
If gravity is the only force present, what is the total mechanical energy of a box falling of a truck at a time when it's potential energy is 100J and it's kinetic energy is 150J?
Saturday, June 18, 2011 at 6:14pm by carson

Science
The law of conservation of energy states that energy can neither be created nor destroyed. In many instances it may look as though energy is gained or lost, but it is really only changed in form. How is the law of conservation of energy represented when an archer shoots an ...
Wednesday, January 5, 2011 at 6:55pm by Steven

Science
Identify the sources of energy used to power a cell phone and other energies that it can transform into. I put Electrical Energy and it can be transformed to heat,sound,light,and mechanical energy.
Monday, April 2, 2012 at 5:40pm by Rezu

Science
Please help me on my science homework....Motor A uses 1000 joules of energy to move 200 newtons of force a distance of 3 meters. Motor B uses 1200 joules of energy to do the same job. What is the difference in percent efficiency between Motor A and Motor B? Percent efficiency...
Tuesday, November 7, 2006 at 4:10pm by Jenny

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

science
please help me im stuck on this last one !! .A car driver accelerates to a speed of 35 mph and then takes her foot of the gas pedal.Even though she does not press the brake pedal at any time,she eventually rolls to a stop.which of the following most likely causes the car to ...
Tuesday, February 4, 2014 at 3:29pm by taylor

Science
A ball has a potential energy of 180 J and a kinetic energy of 0 J. After falling 2m, it has a potential energy of 135J. What is its kinetic energy at this point?
Thursday, January 19, 2012 at 3:37pm by Micheal

Science
Give one example of a series of energy transformations. For example solar energy from a plant changes to kinetic energy in an animal's body and so on.
Saturday, December 29, 2007 at 8:56pm by Zarin

Science again...
What other form is released by a radio. A. Heat Energy B. Mechanical Energy C. Ultraviolet Radiation UV? Can you get a tan from your radio? What is that sound...is it mechanical energy? IS the radio warm? Heat energy because c is something to do with the sun b is mechanical ...
Tuesday, April 17, 2007 at 5:26pm by Missy

Science
A golf ball and a ping-pong ball are dropped in a vacuum chamber. When they have fallen halfway down, they have the same... A.speed B.potential energy C.kinetic energy D.Rest Energy my thought is that its c, kinetic energy...but i'm not 100% sure
Tuesday, January 23, 2007 at 6:32pm by Tammy

science
what is the big idea of energy? The big idea for me is that mass and energy is one in the same, that each can be converted to the other. For some others, the big idea is that Entropy is created from useful energy, and in natural processes, that energy cannot be reclaimed.
Friday, May 25, 2007 at 5:27am by chloe

science(check answers)
can someone check my answer thanks ! 2.The ability to do work or cause change is called A.velocity. B.energy.(I PICK B.) C.transfer. D.friction. 3.Which type of energy is demonstrated by a person jogging? A.electrical energy B.nuclear energy C.electromagnetic energy D.kinetic ...
Wednesday, March 5, 2014 at 1:13pm by matt

science
Identify the fruit or vegetable you selected and relate the second law of thermodynamics to the changes in energy observed in Appendix C. How did the amount of energy gained compare to the amount of energy lost as heat at the second through fourth trophic levels? o Answer the...
Tuesday, August 24, 2010 at 4:51am by stephanie

Science
Compare how much kinetic energy and potential energy the ball has at each point and describe why the ball has that energy
Thursday, January 17, 2013 at 8:14pm by Brandon

science (check new answer)
please check my answser .A car driver accelerates to a speed of 35 mph and then takes her foot of the gas pedal.Even though she does not press the brake pedal at any time,she eventually rolls to a stop.which of the following most likely causes the car to come to a stop? A....
Tuesday, February 4, 2014 at 4:31pm by taylor

Science Question
How can you post this under Science? The question is better asked in a grouping of adherents to magic, and fancy. Explain the nature and use of Vril energy. What are some of the potential dangers and drawbacks of the use of Vril energy in modern technology? Thank you for using...
Tuesday, May 15, 2007 at 1:59pm by bobpursley

science
the law of ? of energy states that energy can never be destroyed or created Law of conservation of energy.
Monday, October 30, 2006 at 8:17pm by Hunter

Science
i have to make an energy converter for a science project. it should include at least four energy conversions and the energies should include a renewable energy...i did a research and found a website that shows how to make a hydroelectric generator>;i made the hydroelectric ...
Saturday, June 18, 2011 at 10:43pm by Rose

Science
I need help writhing an Essay about Energy! I have to includ at least 9 of these words listed below ; - heat energy - energy transfer -molecules -motion -traveled -data -centimeters -minutes -observations -colder -warmer -conduction PLLLLLLEEEEEEAAAAAAAASSSSSSEEE HELP!!! (:
Wednesday, February 8, 2012 at 6:38pm by Ariel

Science
Electrical energy can come rom 3 types of energy: __________, __________, and __________. heat, nuclear, solar energy (sunlight)_ Thankz! :)
Tuesday, December 12, 2006 at 6:56pm by Caley

Science
The potential energy of a golf ball in a hole is negative with respect to the ground. Under what circumtansces (if any) is the ball's kinetic energy? Its rest energy? The KE cannot be negative, nor can the rest energy be negative.
Tuesday, January 9, 2007 at 5:03pm by Lacy

Physical Science
Can someone please check these answers for me? Write T for True or F for False for each statement: 1.Kinetic energy is the energy of motion - T 2.Kinetic energy doesn't depend on an object's direction. - T 3.When an object stops moving, its kinetic energy is zero. - T 4.As the...
Monday, April 20, 2009 at 7:03pm by mysterychicken

physical science
A boy with a mass of 30 kg stands motionless at the end of a diving board 3 m above the floor. The boy has: Answer no energy. kinetic energy only. potential energy only. both kinetic and potential energy.
Saturday, September 10, 2011 at 12:05am by Allison

Physical Science
If no friction acts on a diver during a dive, then which of the following statements is true? A. The total mechanical energy of the system increases. B. Potential energy can be converted into kinetic energy but not vice versa. C. (KE+ PE)beginning = (KE + PE)end D. all of the ...
Tuesday, September 3, 2013 at 3:28pm by Danny

Science! Biology 1
Question: Which of following best describes the free-energy requirements of an organism? Answer Choices: During times of hibernation large amounts of free energy are required. Free-energy demand is consistent for all heterotrophs. The organism requires free energy in all ...
Thursday, November 14, 2013 at 10:36pm by Carmen

Science
Explain, with the help of an appropriate labelled sketch diagram, how a hydrogen atom, which has only one electron, has so many spectral lines. The diagram of the energy levels follows...
Tuesday, March 6, 2007 at 11:09am by Adam

Science
5 examples of (A)Source of kinetic energy (B)Source of potential energy (C)Chemical energy
Thursday, August 30, 2007 at 5:45pm by Jas

science
the potential energy of a golf ball in a hole is negative with respect to the ground. Under what circumstances(if any) is the ball's kinetic energy negative? Its rest energy? The kinetic energy of the ball is zero when it isnt moving, whether it is ion the hole or not. Kinetic...
Monday, February 19, 2007 at 2:03am by tasha

physical science
what form of energy do people use? & also doesnt E=mc squared mean energy=mass times ? squared.... & how does increasing height affect gravitational potential energy? ~i have a HUGE semester final~ 100+ questions...~
Thursday, May 15, 2008 at 7:31pm by leann

Science
Hey everyone I need some omework jelp as you can see.I'm not that well in Science so could you give me some tips? And i would like somr homework help for the following passge and answers. DIRECTIONS Read the paragraph and answer the questions. You can find examples of the ...
Thursday, October 16, 2008 at 7:34pm by Cindy

Science
Which statement is true regarding nuclear energy? (Points : 1) Since 2005, global private investments in nuclear energy totaled $100 million dollars. Nuclear plants cost 2-3 times as much as new windpower to build. Nuclear energy currently produces 50% of the U.S.s energy ...
Monday, November 11, 2013 at 5:39pm by Anonymous

science
How do i calculate how much time it takes to heat water? All I know is the power supplied and the energy required. Thanks power= energy/time Power*time= energy you know the energy, you know the power, solve for time. time(in seconds)= energyinjoules/powerinwatts. so if the ...
Tuesday, January 16, 2007 at 7:18pm by barbara

science
when on a roller coster at which point is the kinetic energy and potential energy located????
Tuesday, December 4, 2007 at 5:48pm by taylor

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

Science
In the Krebs Cycle, does the ATP store energy or release energy?
Sunday, July 27, 2008 at 10:03pm by Heidi

science
Is the conversion of light energy to electrical energy endothermic or exothermic?
Monday, December 15, 2008 at 5:33pm by Brianne

science (energy) really needs help!!!
What is chemical potential energy?? :) please help!!!!!!!!!!!!!!!!!!!!!!!!
Sunday, March 28, 2010 at 5:14pm by PoppY!!!!!!!!!!!!!!!!!!!!

science
Why do organisms need a constant supply of energy and what are 3 biological activities that require energy?
Sunday, October 26, 2008 at 6:04pm by Damian

science
What become of the electric energy provided in electrolysis? In what device is this energy transformation reversed?
Wednesday, October 26, 2011 at 7:30pm by Sheryl

science
(c) The kinetic energy of the emitted electrons is measured to be 15.2 eV. What is the first ionization energy of Hg in kJ/mol?
Sunday, December 16, 2012 at 3:32pm by Samantha

science
is batteries powering a flashlight an example of chemical potential energy to electrical energy?
Monday, May 20, 2013 at 10:54pm by Anonymous

Science
Ms. Lewis is a chemist mixing two solutions together. A chemical reaction takes place, and the solution becomes warm. Which statement best describes what has happened? A. Energy has been created in the form of thermal energy B. Energy has been transformed from one form to ...
Saturday, February 2, 2013 at 6:18pm by Anne

Physical Science
What becomes of the electric energy provided in electrolysis? In what device is this energy transformation reversed?
Wednesday, October 26, 2011 at 10:44pm by chris

science
How do you know a television change electricity into light energy? What other form energy is produced?
Wednesday, October 24, 2012 at 5:30pm by Jeremy

physical science
In terms of energy, the general chemical equation AB+CD+energy = AD+CB represents a (an)_________ reaction.
Tuesday, January 29, 2013 at 11:19pm by Jason

Science
List the types of energy according to the: (a)content/particle arrangement (b)energy changes involved
Saturday, February 16, 2013 at 1:20am by Shane

Physical Science
What form of energy provides power for a gas stove? That's Chemical Energy, right?
Monday, February 17, 2014 at 12:34pm by dark1

Physical Science
22. Why does a heat pump need an external source of energy (such as electrical energy)?
Saturday, March 8, 2014 at 2:37pm by Alex

science
is all light energy solar energy? explain
Thursday, January 22, 2009 at 10:00pm by ahsly

science
what is the difference between radiant energy and thermal energy?
Wednesday, September 30, 2009 at 9:05pm by warren

Science
What shows how energy is passed each time energy is transferred?
Monday, March 7, 2011 at 4:20pm by Shaquille

Science
1. How much heat energy is lost by 3 kg of water when it cools from 80 degrees C to 10 degrees C? 2. A 300 g piece of aluminum is heated from 30 degrees C to 150 degrees C. What amount of heat energy is absorbed? 3. Determine the temperature change in each of the following. (a...
Sunday, October 23, 2011 at 12:56am by Debra

Physical Science
Can someone give me two examples of mechanical energy and one example nuclear energy - thanks.
Monday, December 7, 2009 at 7:24pm by Carol

Science, plz,plz help
Which of the following illustrates the energy changes taking place during photosynthesis? light energy from sun chemical energy in bonds of glucose chemical energy in bonds of glucose light energy from sun light energy from sun chemical energy in bonds of carbon ...
Monday, February 10, 2014 at 11:46am by Anonymous

slappy science
Heat energy does not always cause a change in temperature of a substance. Heat energy can be stored. Stored energy is called ______. Food contains stored enregy
Tuesday, April 22, 2008 at 1:27am by sam

Environmental Science
In a short answer, Explain why an energy pyramid is used to represent the amount of energy at each trophic level.
Friday, December 22, 2006 at 11:04pm by Qiayamah

science
how can the chemical energy of your lunch today become the energy you need to deliver the newspapers after school tomorrow?
Tuesday, January 6, 2009 at 3:59pm by jayme

6th grade science
how much thermal energy produced by burning gasoline is converted into kinetic energy?
Wednesday, January 14, 2009 at 7:53pm by desteny

physical science
when a photon of energy hf elects an electro violently from an atom. How is this energy distribute in the process me electing electron?
Tuesday, March 13, 2012 at 4:09pm by euvin

science
describe the efficiency of energy tranfer and how the amount of energy available at each trophic level affects the structure of the ecosystem>
Thursday, July 12, 2012 at 12:37am by tracey

science
a propane gas reacts with oxygen to produce carbon dioaxide and water is this heat energy or nucler energy
Wednesday, May 1, 2013 at 12:21am by aa

science
a propane gas reacts with oxygen to produce carbon dioaxide and water is this heat energy or nucler energy
Wednesday, May 1, 2013 at 12:21am by aa

science
potential energy is energy of _______ or chemistry?
Thursday, November 6, 2008 at 8:15pm by Colin

science
what is gravitational potential energy and what is kinetic energy?
Sunday, October 25, 2009 at 4:36pm by selena

science
where can i get pictures of muscular energy and wind energy?
Thursday, March 15, 2012 at 2:02am by joken

5TH GRADE SCIENCE
Hey everyone I need some omework jelp as you can see.I'm not that well in Science so could you give me some tips? And i would like somr homework help for the following passge and answers. DIRECTIONS Read the paragraph and answer the questions. You can find examples of the ...
Thursday, October 16, 2008 at 8:43pm by Cindy

Physical Science
Hello! I need help with this science questions. Thank You! 2. One of the reasons E=mc^2 is important to us is because it explains how our sun produces huge amounts of energy through nuclear fusion of hydrogen atoms. Use this example to describe the relationship between the ...
Wednesday, March 25, 2009 at 5:52pm by Amy

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