As a physical science demonstration, jack and jill ran up the hill at the football stadium. jack is twice as massive as jill, but jill runs the same distance in half the time. compare the work done and power of jack and jill. a) jack did more work than jill but jill has more power. b) jill did more work than jack but jack had more power. c) jack did more work than jill but jill has as much power as jack. d) jack and jill did the same amount of work but jack had more power.

Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.

Which of these activities increases the amount of carbon in the atmosphere?

Ideal meters problem. what internal resistance is ideal for a voltmeter? what internal resistance is ideal for an ammeter?