A tube of air contains a feather and a quarter in it. both object are dropped at the same time. The quarter falls faster than the feather. However, when the air is removed from the tube to create a vacuum, both the feather and the quarter fall at the same rate. Explain why this happens.

You are about to open a container of soy milk but notice that there are instructions to “shake well before serving.” the soy milk is most likely a

The temperature at a point (x, y) is t(x, y), measured in degrees celsius. a bug crawls so that its position after t seconds is given by x = 6 + t , y = 8 + 1 3 t, where x and y are measured in centimeters. the temperature function satisfies tx(3, 9) = 5 and ty(3, 9) = 4. how fast is the temperature rising on the bug's path after 3 seconds? (round your answer to two decimal places.)

Is the vertical component of velocity ever zero?