Two cups of coffee, one that is at 10°C and one that is at 20°C, are mixed. Which statement about the temperature of the mixture is correct? There is no kinetic energy transfer so the temperature of the coffee in the warmer cup is the final temperature.
The kinetic theory dictates that the temperature of the coffee in the cooler cup is the final temperature.
Energy is transferred from faster moving molecules to slower moving molecules, and the result is the average of 15°C.
Energy transfer occurs as the molecules collide, and the result is additive; the final temperature is 30°C.

Martha has a deck of cards. she has lost some of the cards, and now the deck only contains nine spades, eleven diamonds, eight clubs, and twelve hearts. martha predicts that whenever she draws a card from the deck without looking, she will draw a club one-fifth of the time. which activity would best allow martha to test her prediction? a. randomly draw a card from the box and see if it is a club. b. randomly draw a card. then, continue to draw another card until all eight clubs are drawn. c. randomly draw and replace a card 120 times. then, observe how close to 30 times a club is drawn. d. randomly draw and replace a card 100 times. then, observe how close to 20 times a club is drawn.