At the top of a building 125 meters high, a dense ball is shot horizontally such that its initial velocity is 20 m/s. How long does it take to strike the ground?
15
20 m/s
16
40 seconds
17
50 seconds

25 seconds
18
12 seconds

What happens to light waves from a star as the star moves away from earth?

The pressure, volume, and temperature of a mole of an ideal gas are related by the equation pv = 8.31t, where p is measured in kilopascals, v in liters, and t in kelvins. use differentials to find the approximate change in the pressure if the volume increases from 14 l to 14.6 l and the temperature decreases from 375 k to 370 k. (round the answer to two decimal places.)

True or false graphs must include scales that increase by the same amount