Talk:Electrical Engineering Orientation/Physics Science Laws

Question 5

The problem doesn't say the train suddenly stops, it says it suddenly brakes. The train and the rider will continue to move due to the sum of their inertias.

Question 6

I dis agree with you Molniya on your edit on Question 6.

Betty and Cindy each weigh 100kg and 110kg respectively on earth. They both fly to the moon on board NASA space shuttle. On the moon their weight are measured again. Which of the following readings are the most probable results?

• (C) Betty: 16.7kg ; Cindy: 18.3kg

could you Explain how you arrived at the above answer? Because I don't think that it is correct, they are weight less and if they do manage to stand on the scales, there must be an external force, pushing them on to the scale, this would not be gravity and thus would not be reflecting their weights.

Please feel free to comment on above, in the mean-time i will revert the answer to Weightless. -Thuvack 06:48, 18 April 2008 (UTC)

Hi I think I made a mistake, you are quite right with the above.I intended to ask their weight on board the Shuttle at zero gravity. Maybe we can make this an extension question. :-0 Thuvack 06:57, 18 April 2008 (UTC)

Looks good as you have it now. --Molniya 05:00, 19 April 2008 (UTC)

Actually, I feel this is a trick question. For one thing, "Weight" is the force of gravity on an object. However, weight is not measured in kilograms. Kilograms, as is well known, are a measure of the mass of an object, which never changes, regardless of gravity. Thus, in both questions 6 and 7, I believe the answers should both be "100kg and 110kg." 96.8.218.203 20:43, 13 August 2009 (UTC)

You could make an answer in Newtons and another in kilograms, as a trick question. --00iCon 01:19, 9 December 2009 (UTC)

Question 4

What is it asking? The answer appears very incorrect. --00iCon 01:17, 9 December 2009 (UTC)