1 / 9

Today’s Puzzler:

Today’s Puzzler: A pot of water is brought to a steady boil on a stove. A thin plastic cup of cool water is placed in the boiling water, but no part of the cup touches the pot. Will the water in the cup start to boil if you wait long enough ? 1) Yes 2) No

lauren
Download Presentation

Today’s Puzzler:

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Today’s Puzzler: A pot of water is brought to a steady boil on a stove. Athin plastic cup of cool water is placed in the boiling water, but no part of the cup touches the pot. Will the water in the cup start to boil if you wait long enough? 1) Yes 2) No (This can be tested at home…)

  2. 1 of 3 • Cart C is connected to hanging masses A and B by means of ropes and pulleys as shown. A and B are equal mass bodies. After being given the initial velocity shown, cart C will • speed up. • stay at the same speed. • slow down and stop. • slow down, stop, and reverse its direction v C A B 2

  3. 2 of 3 • Cart C is connected to hanging masses A and B by means of ropes and pulleys as shown. A is heavier than B. After being released into motion from rest, the tension in A’s rope will • Remain greater than that in B’s rope. • Become equal to that in B’s rope. • Become less than that in B’s rope. C A B 3

  4. 3 of 3 • A skydiver is falling with the parachute open. The rate of descent is a steady 8 m/s. We can conclude that the net force acting upon the skydiver is • upward. • zero. • downward. v 4

  5. 1 of 3 • Cart C is connected to hanging masses A and B by means of ropes and pulleys as shown. A and B are equal mass bodies. After being given the initial velocity shown, cart C will • speed up. • stay at the same speed. • slow down and stop. • slow down, stop, and reverse its direction v C A B 6

  6. 2 of 3 • Cart C is connected to hanging masses A and B by means of ropes and pulleys as shown. A is heavier than B. After being released into motion from rest, the tension in A’s rope will • Remain greater than that in B’s rope. • Become equal to that in B’s rope. • Become less than that in B’s rope. C A B 7

  7. 3 of 3 • A skydiver is falling with the parachute open. The rate of descent is a steady 8 m/s. We can conclude that the net force acting upon the skydiver is • upward. • zero. • downward. v 8

  8. 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 ACTIVITIES SHEETS 9

More Related