Search: Science (Energy)

Number of results: 60,378

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
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
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
Kinetic energy is the energy of motion and K.E. = 1/2 mv^2. Potential energy is the energy a system has as a result of its position (for example, a rock at the top of a ledge).
Monday, October 8, 2007 at 2:52pm by DrBob222

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
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
It has kinetic energy when the CD is turning. Its potential energy depends upon its elevation. Asking "where" the energy is doesn't make a lot of sense. The kinetic energy is in any part that moves, and the potential energy is in all parts of the player.
Monday, May 11, 2009 at 12:13am by drwls

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

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

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
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
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
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
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

Science
If I not incorrect... Kinetic energy is motion Potential Energy is stored energy
Monday, October 8, 2007 at 2:26pm by Sonic

science
radiant energy is from electromagnetic waves Solar energy comes from the Sun and Thermal energy is formed by heat
Thursday, February 19, 2009 at 9:07pm by Chopsticks

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 ...
Monday, November 26, 2012 at 8:39pm by Laruen

science
Assuming the car has no kinetic energy at the top... energy at the bottom = energy at the top energy at the bottom = kinetic energy kinetic energy = (1/2) * m * (v^2) So, (1/2)*m*(v^2)=20,000J Solve for v
Tuesday, October 9, 2007 at 11:51pm by Quidditch

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 (big idea of energy)
Was there stored energy in the chemical bonds of the Magnesium metal? Was it released when a reaction occured? Was the change in stored energy equal to the energy released?
Monday, October 1, 2007 at 11:36am by bobpursley

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

physical science
mechanical energy is the sum of kinetic and potential energy. there fore the one who says that there is mechanical energy is correct. Because there is potential energy present
Thursday, November 3, 2011 at 7:39am by Kelsey

science
IT started at the top with Potential energy, and zero Kinetic energy. As it falls, PE is transfered to more KE, but the total energy is always constant
Monday, March 31, 2008 at 8:36pm by bobpursley

Science
Assuming energy is conserved, gravitational potential energy and kinetic energy 'swap' during a fall, and the numeric values transfer. I would say the answer is 180 - 135 = 45J Kinetic energy = 45J
Thursday, January 19, 2012 at 9:07pm by James

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
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

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

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
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

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

physical Science
That depends upon where you define the level of zero potential energy to be. If it is the bottom of the well, the object has 50 J of potential energy when lifted 5 meters from the bottom. While it falls, it retains that total energy. Half of it will be kinetic energy halfway ...
Thursday, December 15, 2011 at 7:51pm by drwls

Science
The peanut butter, jelly, and bread are consumed and the body breaks the food down by chemical means to produce energy for the system. I would answer chemical energy (which is stored as potential energy, then converted to kinetic energy as the body needs it).
Wednesday, October 22, 2008 at 10:25pm by DrBob222

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
Since you have to ADD energy to the reactants in an endothermic reaction, the energy is on the left side: something + energy = something
Thursday, February 28, 2008 at 7:24pm by DanH

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
Light changes to potential energy through photosynthesis in plants. Humans and animals eat plants and the energy is changed into kinetic energy.
Tuesday, April 27, 2010 at 5:48pm by DrBob222

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
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
Matter and energy are equivalents. Mass is energy, and energy is mass, given the right conversion conditions.
Wednesday, September 5, 2007 at 11:05pm by bobpursley

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
Use the formulas: (Potential energy) = M g H = (Mass)*(g)*(height) Weight = M*g Kinetic energy of a rolling solid ball = (7/10) M V^2 (This includes the energy associated with rotation) Show your work if you need further assistance.
Saturday, October 22, 2011 at 11:36pm by drwls

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 PHYSICS
Ok thanks, so the transfer of energy is work done by the body? to clarify ... As the diver walks up the steps chemical energy is transferd through work and converts into GPE and kinetic energy. what is the energy transfer to begin the dive? chemical? once the dive has begun ...
Tuesday, April 27, 2010 at 10:35am by Alice

science
I am wondering what the big idea of energy is. The big idea of energy this century is mass and energy are equivalent, that is, mass is energy, and energy is mass, E=mc^2
Sunday, October 16, 2011 at 11:29am by bobpursley

physical science
Most folks use thermal energy a lot, and electrical energy second. In the conversion of mass to energy, energy= mass*speedofLight^2 GPE= mass*g*height so increased height means more GPE
Thursday, May 15, 2008 at 7:31pm by bobpursley

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

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
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

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 ...
Monday, April 20, 2009 at 7:03pm by mysterychicken

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
Sunlight is electrmagnetic waves; a. photosynthesis converts it into food which is the source of energy and pewer for plants and animals b. it can be converted to chemical energy in solar cell which can be used a source for energy and power later on
Friday, March 25, 2011 at 7:19pm by Anonymous

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

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. ...
Monday, February 19, 2007 at 2:03am by tasha

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
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

the big idea of energy
we are doing food webs and my teacher said it is energy passed through one body to another by eating the first thing. i do not get it.i think it is like a rabbit gets energy from grass then the cat gets energy from the rabbit and grass then the fox gets energy from the cat, ...
Tuesday, December 5, 2006 at 2:18pm by Emily

science
the law of ? of energy states that energy can never be destroyed or created Law of conservatin of energy. Hi! Very nice site! Thanks you very much! iR3JxnfCFejE
Monday, October 30, 2006 at 8:17pm by Hunter

science biology
photoautotrophs They use energy from sunlight and water and minerals from the soil and produce glucose that is a source of energy.All green plants such as bryophytes and tracheophytes are photoautotrophs.Moreover algae also get energy through photosynthesis.
Tuesday, August 3, 2010 at 10:40pm by Christopher

Science PHYSICS
I am trying to gain a understanding of the transfers and conversions of energy whilst the subject (being a diver) goes through its motions. Maybe i should be clearer .... SO as the diver makes his way to the top of the steps chemical energy is transferred from the body to the...
Tuesday, April 27, 2010 at 10:35am by Alice

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 ...
Saturday, June 18, 2011 at 10:43pm by Rose

8th grade science
Light consists of particles on energy (quanta), the higher the frequency, the higher the energy. This is called Plancks Equation, after Max Planck. Energy=aConstant* frequency
Wednesday, January 21, 2009 at 9:45am by bobpursley

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

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
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

physics science
energy which means frequency due to the energy of a photon = h f
Thursday, July 14, 2011 at 6:57am by Damon

science
big idea oof energy is shoowing the changes of how energy is transferred
Friday, October 20, 2006 at 2:34pm by an

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

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

envirnomental science
Give a detailed description of the energy Energy problem
Sunday, June 29, 2008 at 9:44pm by Anonymous

Science
kinetic is energy of motion, potential is energy due to position.
Tuesday, October 7, 2008 at 7:34pm by bobpursley

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

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

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

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

science
Kinetic energy is converted to gravitational potential energy.
Wednesday, December 10, 2008 at 10:34am by drwls

science
energy=voltage*current*timeinseconds where energy is in Joules.
Saturday, October 20, 2007 at 5:45pm by bobpursley

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

Science
Gravitational energy is a type of potential energy that is released when mass (such as water) falls to a lower elevation. One place where that type of energy conversion takes place is in a hydroelctric power facility (dam)
Sunday, October 10, 2010 at 7:40pm by drwls

physics
Friction converts kinetic energy to a. mechanical energy b. potential energy c. nonmechanical energy d. total energy i don't think its B,..
Saturday, February 21, 2009 at 3:16pm by Bella

5TH GRADE SCIENCE
Is all light energy solar energy?Explain
Thursday, October 16, 2008 at 8:43pm by jazlyn

science (energy) really needs help!!!
It is the energy which CAN be released in a given reaction. As in a battery.
Sunday, March 28, 2010 at 5:14pm by bobpursley

Science
Oh ok I get it now fireflies light energy don't come from solar energy so it's no right
Thursday, October 16, 2008 at 7:34pm by Cindy

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

Physics
in a compressed spring, energy is in the form of (a) kinetic energy (b) potential energy (c) chemical energy (d) sound energy
Wednesday, August 18, 2010 at 6:48am by Anonymous

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 PLZZ HELP
the only ones i'm certain about are solar energy and nuclear energy.
Monday, November 14, 2011 at 6:00pm by lidia

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

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