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Today’s Physics Puzzler:

Today’s Physics Puzzler: You are just served a hot cup of coffee and want it to be as hot as possible later. If you like milk in your coffee, should you add it: when you get the cup, OR just before you drink it?

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Today’s Physics Puzzler:

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  1. Today’s Physics Puzzler: You are just served a hot cup of coffee and want it to be as hot as possible later. If you like milk in your coffee, should you add it: when you get the cup, OR just before you drink it? credit: Prof. Henry Greenside, Duke University, http://www.phy.duke.edu/~hsg/

  2. ANNOUNCEMENTS

  3. 1 of 3 y Vector A is as shown. Its magnitude is A. The x component of A, referred to as Ax, is Ax = A sinq Ax = A cosq Ax = A tanq Ax = A / cosq A q x 3

  4. 2 of 3 Vector A and vector B are shown. The resultant vector R = A + B would be best represented by: 1 2 R A R 3 4 B R R 4

  5. 3 of 3 Vector A and vector B are shown. The resultant vector R = A – B would be best represented by: 1 2 R A R 3 4 B R R 5

  6. ANNOUNCEMENTS

  7. Etc.

  8. Etc.

  9. 1 of 3 y Vector A is as shown. Its magnitude is A. The x component of A, referred to as Ax, is Ax = A sinq Ax = A cosq Ax = A tanq Ax = A / cosq A q x 11

  10. 2 of 3 Vector A and vector B are shown. The resultant vector R = A + B would be best represented by: 1 2 R A R 3 4 B R R 12

  11. 3 of 3 Vector A and vector B are shown. The resultant vector R = A – B would be best represented by: 1 2 R A R 3 4 B R R 13

  12. PROJECTION SCREEN 1 4 1 4 1 4 1 4 2 5 2 5 2 5 2 5 3 6 3 6 3 6 3 6 HAND IN TODAY’S ACTIVITY SHEETS 14

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