in a second trial, the timer started his watch a bit late. Using the data from the second trial: a. plot the position vs. time graph for the skater. b. How far from the origin was she at t=5 second? How do you know? c. was her speed constant? If so, what was it? d. In the first trial, the skater was further along at 2 seconds than she was in the second trail. Does this mean that he was going faster? Explain your answer.

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?

Air conditioners not only cool air, but dry it as well. suppose that a room in a home measures 5.0m×9.0m×2.4m . if the outdoor temperature is 30 ∘c and the vapor pressure of water in the air is 85 % of the vapor pressure of water at this temperature, what mass of water must be removed from the air each time the volume of air in the room is cycled through the air conditioner? the vapor pressure for water at 30 ∘c is 31.8 torr.

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.