Pixel Joint Forum: Helping Souly with Science homework.

Message

   Science is my worst subject...
I do science at home, so I have no teachers to help me.

I'm having problem with 5 questions in this whole booklet of 50 questions.
1. Jacki's friend claims that future improvements in engine design will allow vehicles to travel any distance engineers want on just 1L of gasoline.
Is Jacki's friend correct? Why or Why not?
2. For an electric toothbrush, is input energy equal to useful output energy? 
Explain your answer.
3. Which of the following would not produce more electricty when a magnet is moved back and forth through a coil of wire.
A - Adding more coils
B - Using a strong magnet
C - Moving the magnet faster
D - Using a longer wire
4. Moving a magnet through a coil of wires converts ___________ energy into ___________ energy.
5a. Complete the following.
___________ -> Generator -> ___________
b. Name the converter in the above system.

Author	Message
Souly Commander Joined: 13 December 2020 Online Status: Offline Posts: 2451	Topic: Helping Souly with Science homework. Posted: 23 May 2006 at 9:07am
	Science is my worst subject... I do science at home, so I have no teachers to help me. I'm having problem with 5 questions in this whole booklet of 50 questions. 1. Jacki's friend claims that future improvements in engine design will allow vehicles to travel any distance engineers want on just 1L of gasoline. Is Jacki's friend correct? Why or Why not? 2. For an electric toothbrush, is input energy equal to useful output energy? Explain your answer. 3. Which of the following would not produce more electricty when a magnet is moved back and forth through a coil of wire. A - Adding more coils B - Using a strong magnet C - Moving the magnet faster D - Using a longer wire 4. Moving a magnet through a coil of wires converts ___________ energy into ___________ energy. 5a. Complete the following. ___________ -> Generator -> ___________ b. Name the converter in the above system.
	I am the jesus of PJ.
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Pixel_Outlaw Commander Joined: 01 September 2005 Online Status: Offline Posts: 3829	Posted: 23 May 2006 at 9:25am
	1. No, there is a physical limit to fuel consumption effeciency 2. no imput(batteries) is always > output the batteries, you can't have a 100% efficenctcy on any known system 3.D 4 m,echanical , electric // just a guess on 5 power, generator,work Edited by Pixel_Outlaw

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Souly Commander Joined: 13 December 2020 Online Status: Offline Posts: 2451	Posted: 23 May 2006 at 9:29am
	*Originally posted by Pixel_Outlaw* 1. No, there is a physical limit to fuel consumption effeciency 2. no imput(batteries) is always > output 1 and 2 require explinations. D: They expect me to fill up the blank space they give me. 1. Jacki's friend claims that future improvements in engine design will allow vehicles to travel any distance engineers want on just 1L of gasoline. Is Jacki's friend correct? Why or Why not? ________________________________________________ ________________________________________________ ________________________________________________
	I am the jesus of PJ.
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Souly Commander Joined: 13 December 2020 Online Status: Offline Posts: 2451	Posted: 23 May 2006 at 9:29am
	Oh, and thank you for the other answers. <3
	I am the jesus of PJ.
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Pixel_Outlaw Commander Joined: 01 September 2005 Online Status: Offline Posts: 3829	Posted: 23 May 2006 at 9:30am
	I revised and thatnk you for the chance to get more post counts!

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Shark Commander a.k.a. Feron Joined: 02 July 2005 Online Status: Offline Posts: 2136	Posted: 23 May 2006 at 9:55am
	2: some energy will be lost as heat and sound therefore will not be totally efficient.
	Snark, we love yuu.
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PixelSnader Commander Not a troll! Joined: 05 June 2014 Online Status: Offline Posts: 3194	Posted: 23 May 2006 at 10:33am
	i thought energy -> generator -> electrical energy like how a windmill converts wind to electricity, and how waterdam-things work
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