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Monday, 12 December 2011

check out what's new with Posterous Spaces!

More great tech tools from Posterous!

Posterous Spaces

An easier way to manage your posts
Our new Posterous Bar makes it even easier to post, follow and manage Spaces while on any Posterous site.
Learn more

Tell a story with embeddable Tweets Keep the conversation going past 140 characters by embedding tweets directly into your posts. Embedded tweets contain photos, videos, and conversations with all the links, @mentions and #hashtags remaining interactive to engage with your audience.
Learn more

Even better Popular content to check out
We've retooled how our Popular feed works. Once your posts hit a threshold of comments, views, or likes your post will automatically appear in our Popular feed.
Check it out now

An iPad app partner and a blogging assistant
We've recently introduced support for Zemanta, a content recommendation plug-in and Blogsy, a full-featured iPad blogging app.
Learn more about these new tools.

Did you know?
Our How Do I ... Space houses some quick tutorials that help you customize and make the most out of your Space. Need some inspiration on what to post next? Mosey on over to our Posterous Inspiration Center which features some of our best users and their Spaces.

What's to come in the New Year
Our team is working non-stop in making sure we provide the best public and private sharing experience possible . We can’t wait until 2012 – thanks as always for your support!


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Thursday, 10 November 2011

Teaching and learning in our Physics lessons

Thank you to some of the students in 11.1X who stayed behind after their lesson yesterday to chat to me about teaching and learning in your Physics lessons this year.  I always welcome the opportunity to improve the way that we do things in our lessons and direct feedback from all of you is invaluable for this process.

I’d like to open up the discussion to all of you and therefore I’ve written down the main points that we covered yesterday below.  During our next Physics lessons I’ll give you the opportunity to comment anonymously on teaching and learning in their Physics using the same method that we used last year.

You send us too many e-mails

·         Fair comment! 

·         In future I will try to “bundle” work by syllabus objective in much the same way as I sent out the e-learning when the school was closed.  Hopefully this will make it easier for you all to process the e-mails.

Posterous sends me too many e-mails

·         You can turn these off.  Watch “Step 14: Turn off those damn irritating e-mail notifications” on http://maddogscience.posterous.com/18-steps-to-blogging-bliss

I would like a copy of the complete Physics Specification

·         No problem – attached!

When I open my Posterous blog some of the flash files open and start playing music which I can’t turn off

·         Sorry!  That flash file was…

Wind Energy Story.swf

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I had no idea it would be so irritating!  Go to Objective 4.16 on your blog and delete it!

It’s really hard to edit the posts in Posterous and make them look nice – the online editor is difficult to use

·         I agree that sometimes the posts come out looking very strange

·         My own personal dislike is that sometimes Posterous removes the subscripts and superscripts that are essential for Physics (as in Fc and m3)

·         My suggested solution to your formatting woes is to copy the resources into a new Word document for each objective and do your work there

·         It’s super easy to send your work to Posterous from Word: make sure you’ve got the “e-mail as attachment” button turned on in the Quick Access tool bar

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and then it’s just one click!

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This will open up a new e-mail in Outlook with the Word doc as an attachment.

·         Posterous will embed your Word doc into a Scribbid Reader which I can then view on fullscreen when I’m marking your work.

I want to have an offline copy of the work that we do – I find it difficult to revise from my online work

·         Working in Word can help out with this one too: if you’ve been working in Word then you’ll automatically have an offline copy of all of your work.  You could even print this out to use for revision notes if you wanted too. 

·         However, because you’ve also sent the Word docs to Posterous I can still provide immediate feedback on your work – clearly this online system has been invaluable during the recent enforced school closure.

I want to do more questions on paper - we have to write on paper in our exams so I’d like to practice it in our lessons too

·         Good point which I do appreciate

·         I always give out a paper copy of the past paper questions at the end of the topic which you can write on but maybe I need to give them out earlier in the topic or supplement these with other paper based questions

·         I’ll try to do this in future; you can help remind me!

I want to take down notes that you write on the board as this helps me to learn the work.  If you just e-mail me the notes then I don’t learn them

·         We have a limited amount of time in lessons and I want to use the most effective techniques in our lessons to help you learn.  All of the research done into this area indicates that active learning activities such as group discussions, problem solving activities, self-assessment, etc coupled with receiving quality feedback on your work will improve your learning; passively copying does not improve your learning so we won’t do it in our Physics lessons.

·         Sorry if you don’t agree with this but don’t just take my word for it, have a look at some of the evidence: one of the best speakers I’ve seen recently who makes this point very strongly is Dr Eric Mazur, the Dean of Applied Physics at Harvard University in “Confessions of a Converted Lecturer” .  It’s quite long but it is funny!  My favourite quote is at 26m28s.  Watch it!

·         My own personal action point after watching Dr Mazur’s video again is that I must spend less of our lesson time speaking!  Again, I’ll try to do this in future; you can help remind me!

Thanks again to the students from 11.1X for initiating this important dialogue.

Saturday, 15 October 2011

How to bulk upload subscriptions to Google Reader - resources from TechEx 2011 Session by Lee Chern

It was my pleasure to attend a superb session at TechEx 2011 run by Lee Chern.  He’s been kind enough to allow me to share the resources that he has developed to upload a complete list of all of the blogs you wish to follow to Google Reader in one go, rather than going through the mindless tedium of adding them one at a time (which is what I foolishly did!)

Download the Excel spread sheet and then follow the instruction on Powerpoint slides 5 and 6 carefully.  It looks a bit daunting to begin with (tampering with the code in the Matrix!) but Lee’s instructions are clear and easy to follow.  Definitely better than spending mindless hours copy and pasting your subscriptions over one by one!

Many thanks to Lee for his presentation and for sharing these resources.

OPML Generator.xlsx Download this file

TechEx2011 - bulk upload to Google Reader.pptx Download this file

Thursday, 13 October 2011

Untitled

Loggerpro dragable line of best fit

Great TechEx presentation by Andy this morning.  An aid memoir for me about the best thing I learnt this morning!

Quick overview of Google Reader

Wednesday, 12 October 2011

How to bulk upload subscriptions to Google Reader - resources from TechEx 2011 Session by Lee Chern

It was my pleasure to attend a superb session at TechEx this morning run by Lee Chern.  He’s been kind enough to allow me to share the resources that he has developed to upload a complete list of all of the blogs you wish to follow to Google Reader in one go, rather than going through the mindless tedium of adding them one at a time (which is what I foolishly did!)

Download the Excel spread sheet and then follow the instruction on Powerpoint slides 5 and 6 carefully.  It looks a bit daunting to begin with (tampering with the code in the Matrix!) but Lee’s instructions are clear and easy to follow.  Definitely better than spending mindless hours copy and pasting your subscriptions over one by one!

Many thanks to Lee for this morning’s presentation and for sharing these resources.

OPML Generator.xlsx Download this file

TechEx2011.pptx Download this file

How to bulk upload subscriptions to Google Reader - resources from TechEx 2011 Session by Lee Chern

It was my pleasure to attend a superb session at TechEx this morning run by Lee Chern.  He’s been kind enough to allow me to share the resources that he has developed to upload a complete list of all of the blogs you wish to follow to Google Reader in one go, rather than going through the mindless tedium of adding them one at a time (which is what I foolishly did!).

Download the Excel spread sheet and then follow the instruction on Powerpoint slides 5 and 6 carefully.  It looks a bit daunting to begin with (tampering with the code in the Matrix!) but Lee’s instructions are clear and easy to follow.  Definitely better than spending mindless hours copy and pasting your subscriptions over one by one!

Many thanks to Lee for this morning’s presentation and for sharing these resources.

OPML Generator.xlsx Download this file

TechEx2011.pptx Download this file

How to bulk upload subscriptions to Google Reader - resources from TechEx 2011 Session by Lee Chern

It was my pleasure to attend a superb session at TechEx this morning run by Lee Chern.  He’s been kind enough to allow me to share the resources that he has developed to upload a complete list of all of the blogs you wish to follow to Google Reader in one go, rather than going through the mindless tedium of adding them one at a time (which is what I foolishly did!).

Download the Excel spread sheet and then follow the instruction on Powerpoint slides 5 and 6 carefully.  It looks a bit daunting to begin with (tampering with the code in the Matrix!) but Lee’s instructions are clear and easy to follow.  Definitely better than spending mindless hours copy and pasting your subscriptions over one by one!

Many thanks to Lee for this morning’s presentation and for sharing these resources.

 

OPML Generator.xlsx Download this file

TechEx2011.pptx Download this file

Saturday, 8 October 2011

18 Steps to Blogging Bliss!

Getting started

Step 1: Create a Posterous account

Step 2: Create a new Public Space

Step 3: Confim your e-mail address

Step 4: Create your first post

Step 5: Bookmark your blog and remember your e-mail address

Pleasurable Posting

Step 6: Posting pictures, flash files and powerpoints

Step 7: Posting videos

Step 8: Posting pictures and text

Step 9: Editing and Deleting Posts

Step 10: Editing and Deleting Posts pt2

Sorting out your settings

Step 11: Turn off Geotagging

(More info about the dangers of Geotagging)

Step 12: Edit your profile

Step 13: Control comments on your blog

Step 14: Turn of those damn irritating e-mail notifications

Putting on some polish

Step 15: Theme your blog

Step 16: Searching by keyword and tagging posts

Step 17: Posting multiple images - inline or gallery

Step 18: Embedding webpages within posts

Follow either link below to get to the iFrame Generator featured in the video

http://maddogscience.posterous.com/embedding-webpages-within-posts-more-advanced-62224

http://bpsciencedepartment.posterous.com/embed-an-website-within-a-blog-post

Embedding webpages within posts (More advanced)

http://7thspace.com/webmaster_tools/iframe_generator.html  Follow this hyperlink to open the webpage in a new window or type directly into the embedded page below! 

http://7thspace.com/webmaster_tools/iframe_generator.html

Embedding webpages within posts (More advanced)

http://7thspace.com/webmaster_tools/iframe_generator.html  Follow this hyperlink to open the webpage in a new window or type directly into the embedded page below! 

http://7thspace.com/webmaster_tools/iframe_generator.html

HTML generator for embedding webpages within posts (Advanced)

Follow the hyperlink to open the webpage in a new window or type directly into the embedded page!

http://7thspace.com/webmaster_tools/iframe_generator.html

http://7thspace.com/webmaster_tools/iframe_generator.html

HTML generator for embedding webpages within posts (Advanced)

Test page for Posterous INSET

 

 

Test page for Posterous INSET

08 October 2011

16:54

 

 

<<IGCSE Physics Student Objectives for Unit 5 - New Specification.doc>>

<<Particle model - conduction.swf>>

<<Density starter - Moon Rock.ppt>>

<<Drag'n'Drop Density (in kg per m3).swf>>

<<N2 LAW KS4 PHYS practical skills rubric-BW.xlsx>>

Density of gases - Mythbusters breath it in!

Image001

Particle model - conduction.swf Download this file

N2 LAW KS4 PHYS practical skills rubric-BW.xlsx Download this file

IGCSE Physics Student Objectives for Unit 5 - New Specification.doc Download this file

Drag'n'Drop Density (in kg per m3).swf Download this file

Density starter - Moon Rock.ppt Download this file

Answers

Image001

Harder Pressure Calculations – Model Answers

4. Ordinary Shoe heel

        A = l x w

        A = 5cm x 5cm = 0.05m x 0.05m

        A = 0.0025m2

            W = mg

        W = 40 x 10

        W = 400N

        p = F / A

        p = 400 / 0.0025

        p = 160,000Pa or 160kPa

Uploading videos

Video - expansion of metal ball.flv Watch on Posterous

P4

Cooking using Conduction, Convection and Radiation.swf Download this file

Heatrans

Plenary Questions.ppt Download this file

P4

Cooking using Conduction, Convection and Radiation Download this file

Heatrans

Plenary Questions.ppt Download this file

test Post

Let’s see if this works?!

Test post

Let’s see if it works!

Thursday, 1 September 2011

Linking your posterous blog to your blogger account

Click Manage

Image001

 

Click Autopost

Image002

 

Click Add a Service and the Blogger icon

Image003

 

You will then be prompted to log in to Google and select your blogger account.

 

Once you're done then every time you e-mail a new post to Posterous it will automatically post it to Blogger too.

 

Blogging Bliss!

Tagging posts in Posterous

 

 

Tagging posts in Posterous

02 September 2011

09:21

Posterous basic setup for students

 

 

Posterous basic setup for students

16 August 2011

13:08

Tuesday, 21 June 2011

P4 Keywords - just mixed definitions

 

 

 

 

P4 Keywords - just mixed definitions

 

<<Y11 unit 4 matching1.htm>>

<<Y11 unit 4 matching2.htm>>

<<Y11 unit 4 crosswords.htm>>

 

 

24 February 2011

14:43

 

Step 1 = Unscramble the Keywords and Mixed Definitions sheet:

o   Kinaesthetic Learners = Cut and Stick

o   Visual Learners = type out and blog

 

Step 2 =   Check your keywords by using one of the following online games.  Mark each keyword with a red pen.  Correct any mistakes.

·         http://www.patana.ac.th/LearningObjects/%7B6B1B5FCC-5C7F-4006-879F-8AB0242337C1%7D_Y11%20unit%204%20matching1.htm

·         http://www.patana.ac.th/LearningObjects/%7B13E1C74F-83AE-48D4-85EF-A14ADC441FED%7D_Y11%20unit%204%20matching2.htm

·         http://www.patana.ac.th/LearningObjects/%7B77B26252-136C-4160-9BAD-A34666E3DD88%7D_Y11%20unit%204%20crosswords.htm

<<Unit 4 Keywords and Definitions.doc>>

Image001

 

Created with Microsoft OneNote 2010 by MABA
One place for all your notes and information


'; document.getElementById('FeedbackContent').innerHTML = Output; var FDiv = document.getElementById('FeedbackDiv'); topZ++; FDiv.style.zIndex = topZ; FDiv.style.top = TopSettingWithScrollOffset(30) + 'px'; FDiv.style.display = 'block'; ShowElements(false, 'input'); ShowElements(false, 'select'); ShowElements(false, 'object'); ShowElements(true, 'object', 'FeedbackContent'); //Focus the OK button setTimeout("document.getElementById('FeedbackOKButton').focus()", 50); // } function ShowElements(Show, TagName, ContainerToReverse){ // added third argument to allow objects in the feedback box to appear //IE bug -- hide all the form elements that will show through the popup //FF on Mac bug : doesn't redisplay objects whose visibility is set to visible //unless the object's display property is changed //get container object (by Id passed in, or use document otherwise) TopNode = document.getElementById(ContainerToReverse); var Els; if (TopNode != null) { Els = TopNode.getElementsByTagName(TagName); } else { Els = document.getElementsByTagName(TagName); } for (var i=0; i ReduceToSize){ ItemToDump = Math.floor(InArray.length*Math.random()); InArray.splice(ItemToDump, 1); } } function Shuffle(InArray){ var Num; var Temp = new Array(); var Len = InArray.length; var j = Len; for (var i=0; i< (j-1); k++) { Temp[k] = Temp[k+1]; } j--; } return InArray; } function WriteToInstructions(Feedback) { document.getElementById('InstructionsDiv').innerHTML = Feedback; } function EscapeDoubleQuotes(InString){ return InString.replace(/"/g, '"') } function TrimString(InString){ var x = 0; if (InString.length != 0) { while ((InString.charAt(InString.length - 1) == '\u0020') || (InString.charAt(InString.length - 1) == '\u000A') || (InString.charAt(InString.length - 1) == '\u000D')){ InString = InString.substring(0, InString.length - 1) } while ((InString.charAt(0) == '\u0020') || (InString.charAt(0) == '\u000A') || (InString.charAt(0) == '\u000D')){ InString = InString.substring(1, InString.length) } while (InString.indexOf(' ') != -1) { x = InString.indexOf(' ') InString = InString.substring(0, x) + InString.substring(x+1, InString.length) } return InString; } else { return ''; } } function FindLongest(InArray){ if (InArray.length < 1){return -1;} var Longest = 0; for (var i=1; i InArray[Longest].length){ Longest = i; } } return Longest; } //UNICODE CHARACTER FUNCTIONS function IsCombiningDiacritic(CharNum){ var Result = (((CharNum >= 0x0300)&&(CharNum = 0x20d0)&&(CharNum = 0x3099)&&(CharNum = 0xfe20)&&(CharNum = 0x3000)&&(CharNum -1)||(NList[i].id.indexOf('Gap') > -1)){ NList[i].value = ''; } if (NList[i].id.indexOf('Chk') > -1){ NList[i].checked = ''; } } } //EXTENSION TO ARRAY OBJECT function Array_IndexOf(Input){ var Result = -1; for (var i=0; i=this.GetL()){if(X=this.GetT()){if(YOtherCard.GetL())? this.GetL(): OtherCard.GetL(); var HDim=smR-lgL; if (HDimOtherCard.GetT())? this.GetT(): OtherCard.GetT(); var VDim=smB-lgT; if (VDim 0){ for (var i=0; i -1){ //If so, send home any card that is currently docked there for (var i=0; i OverlapArea){ OverlapArea = Temp; Result = i; } } return Result; } function StartUp(){ //Calculate page dimensions and positions pg = new PageDim(); DivWidth = Math.floor((pg.W*4)/5); DragWidth = Math.floor((DivWidth*3)/10); LeftColPos = Math.floor(pg.W/15); RightColPos = pg.W - (DragWidth + LeftColPos); DragTop = parseInt(document.getElementById('CheckButtonDiv').offsetHeight) + parseInt(document.getElementById('CheckButtonDiv').offsetTop) + 10; if (C.ie){ DragTop += 15; } //Reduce array if required if (QsToShow Widest){ Widest = FC[i].GetW(); } } if (Widest > DragWidth){Widest = DragWidth;} CurrTop = DragTop; DragWidth = Math.floor((DivWidth-Widest)/2) - 24; RightColPos = DivWidth + LeftColPos - (DragWidth + 14); var Highest = 0; var WidestRight = 0; for (i=0; i DragWidth){DC[i].SetW(DragWidth);} DC[i].css.cursor = 'move'; DC[i].css.backgroundColor = '#FFFFFF'; DC[i].css.color = '#000000'; TempInt = DC[i].GetH(); if (TempInt > Highest){Highest = TempInt;} TempInt = DC[i].GetW(); if (TempInt > WidestRight){WidestRight = TempInt;} } //Fix for 6.2: the reduction by 12 seems to be required -- no idea why! var HeightToSet = Highest-12; var WidthToSet = WidestRight-12; for (i=0; i< Highest){ FC[i].SetH(HeightToSet); } FC[i].SetT(CurrTop); FC[i].SetL(LeftColPos); FC[i].SetHome(); TempInt = FC[i].GetH(); CurrTop = CurrTop + TempInt + 5; } } F = new Array(); F[0] = new Array(); F[0][0]='Substances that conduct heat (allow heat to pass through them) very well '; F[0][1] = 1; F[1] = new Array(); F[1][0]='Ratio of the useful work done by a machine to the total energy input, often written as a percentage.'; F[1][1] = 2; F[2] = new Array(); F[2][0]='A push or a pull, measured in Newtons (N)'; F[2][1] = 3; F[3] = new Array(); F[3][0]='The force that resists when you try to move something. The direction of the friction force is always in the opposite direction to the motion.'; F[3][1] = 4; F[4] = new Array(); F[4][0]='The force of gravity on a mass of one kilogram. The unit is Newtons per kilogram. The value of g on Earth is 10N/kg

'; F[4][1] = 5; F[5] = new Array(); F[5][0]='Objects have more gravitational potential energy when they are higher up in the Earth\'s gravitational field. GPE = mgh

'; F[5][1] = 6; F[6] = new Array(); F[6][0]='Substances that do not conduct heat very well'; F[6][1] = 7; F[7] = new Array(); F[7][0]='The unit of energy. One joule is the energy transferred if we push an object with a 1 Newton force for 1 metre. 1 J = 1 Nm.

'; F[7][1] = 8; F[8] = new Array(); F[8][0]='Moving objects have kinetic energy. Fast, massive objects have more kinetic energy than slow, light objects KE = ½ m v2'; F[8][1] = 9; F[9] = new Array(); F[9][0]='Energy cannot be created or destroyed. Also known as “The Principle of Conservation of Energy”

'; F[9][1] = 10; F[10] = new Array(); F[10][0]='Some energy always becomes unusable whenever energy is transferred. Shown by the fact that some energy is always wasted as heat during an energy transfer.'; F[10][1] = 11; F[11] = new Array(); F[11][0]='Amount of energy transferred every second. The energy can be transferred from somewhere (e.g. a power station) or to somewhere (e.g. an electric kettle). Power = energy transferred / time taken. P = E / t.'; F[11][1] = 12; F[12] = new Array(); F[12][0]='Unit of power. One watt is one joule transferred every second. 1 W = 1 J/s.


'; F[12][1] = 13; F[13] = new Array(); F[13][0]='Force of gravity on a mass. W = m x g. The unit of weight is the Newton.'; F[13][1] = 14; F[14] = new Array(); F[14][0]='Energy transferred when a job is done. Work = force x distance moved in direction of force. Wd = F x d.

'; F[14][1] = 15; D = new Array(); D[0] = new Array(); D[0][0]='conductors of heat'; D[0][1] = 1; D[0][2] = 0; D[1] = new Array(); D[1][0]='efficiency'; D[1][1] = 2; D[1][2] = 0; D[2] = new Array(); D[2][0]='force (F)'; D[2][1] = 3; D[2][2] = 0; D[3] = new Array(); D[3][0]='Friction'; D[3][1] = 4; D[3][2] = 0; D[4] = new Array(); D[4][0]='gravitational field strength (g)'; D[4][1] = 5; D[4][2] = 0; D[5] = new Array(); D[5][0]='gravitational potential energy (GPE)'; D[5][1] = 6; D[5][2] = 0; D[6] = new Array(); D[6][0]='insulators of heat'; D[6][1] = 7; D[6][2] = 0; D[7] = new Array(); D[7][0]='Joule (J)'; D[7][1] = 8; D[7][2] = 0; D[8] = new Array(); D[8][0]='kinetic energy (KE)'; D[8][1] = 9; D[8][2] = 0; D[9] = new Array(); D[9][0]='law of energy, first'; D[9][1] = 10; D[9][2] = 0; D[10] = new Array(); D[10][0]='law of energy, second'; D[10][1] = 11; D[10][2] = 0; D[11] = new Array(); D[11][0]='Power (P)'; D[11][1] = 12; D[11][2] = 0; D[12] = new Array(); D[12][0]='Watt (W)'; D[12][1] = 13; D[12][2] = 0; D[13] = new Array(); D[13][0]='Weight (W)'; D[13][1] = 14; D[13][2] = 0; D[14] = new Array(); D[14][0]='Work (Wd or E)'; D[14][1] = 15; D[14][2] = 0; function ReduceItems2(){ var ItemToDump=0; var j=0; while (F.length > QsToShow){ ItemToDump = Math.floor(F.length*Math.random()); for (j=ItemToDump; j 0){AnswersTried += ' | ';} var i, j; for (i=0; i0){AnswersTried += ',';} AnswersTried += D[i][1] + '.' + D[i][2] + ''; if ((D[i][2] == D[i][1])&&(D[i][2] > 0)){ TotalCorrect++; } else{ //Change made for version 6.0.3.41: don't send wrong items home, //show them in a more conspicuous way. // DC[i].GoHome(); DC[i].SetL(DC[i].GetL() + 10); DC[i].Highlight(); } } Score = Math.floor((100*(TotalCorrect-Penalties))/F.length); var AllDone = false; if (TotalCorrect == F.length) { AllDone = true; } if (AllDone == true){ Feedback = YourScoreIs + ' ' + Score + '%.'; ShowMessage(Feedback + '
' + CorrectResponse); } else { Feedback = YourScoreIs + ' ' + Score + '%.' + '
' + IncorrectResponse; ShowMessage(Feedback); Penalties++; // Penalty for inaccurate check } //If the exercise is over, deal with that if ((AllDone == true)||(TimeOver == true)){ TimeOver = true; Locked = true; Finished = true; setTimeout('Finish()', SubmissionTimeout); WriteToInstructions(Feedback); } } //--> //]]>

Matching exercise

Match the items on the right to the items on the left.
 Check 
'); } //--> //]]>

4.2

9 Types of energy - answers.ppt Download this file

·         4.2 describe energy transfers involving the following forms of energy:

thermal (heat), light, electrical, sound, kinetic, chemical, nuclear and potential (elastic and gravitational)

Extension:  What does "potential" mean?

Answer = “stored”

Sunday, 19 June 2011

Plenary Questions 4.2 to 4.5

 

 

 

Created with Microsoft OneNote 2010 by MABA
One place for all your notes and information

Plenary Questions.ppt Download this file

Plenary Questions 42 to 45.one Download this file

Objective 4.5

 Kettle

10 squares = 2000J/s therefore 1 square = 200J/s

Wasted Heat = 2 squares = 400J/s

Useful Heat = 5 squares = 1000J/s

Wasted sound = 3 squares = 600J/s

 

Efficiency = Useful Eout / Total Ein x 100

Efficiency = 1000 / 2000 x 100

Efficiency = 50%

 

Computer

Conservation of energy so…

Total Ein = Total Eout

150J = 20 + 10 + Useful Eout

Useful Eout = 120J

 

Efficiency = Useful Eout / Total Ein x 100

Efficiency = 120 / 150 x 100

Efficiency = 80%

4.5

10 June 2011

11:42

·         4.5 describe a variety of everyday and scientific devices and situations, explaining the fate of the input energy in terms of the above relationship (see 4.4), including their representation by Sankey diagrams

 

 

Image001

 

<<Sankey Diagrams.ppt>>

Sankey Diagrams.ppt Download this file

4.5

 

 

4.5

10 June 2011

11:42

·         4.5 describe a variety of everyday and scientific devices and situations, explaining the fate of the input energy in terms of the above relationship (see 4.4), including their representation by Sankey diagrams

 

 

Image001

 

<<Sankey Diagrams.ppt>>

 

 

Created with Microsoft OneNote 2010 by MABA
One place for all your notes and information

Sankey Diagrams.ppt Download this file