Bryce is trying to conduct a chemistry experiment. he needs his water to be exactly  65 ℃. right now in his beaker he has  187.5 g  of water at  15.5 ℃. bryce also has a pot of boiling water which is at  96 ℃.

how many grams of water should he pour from his pot of  boiling water  to get his water to exactly  65 ℃.

Aball is thrown from the top of a building with an initial velocity of 21.9 m/s straight upward, at an initial height of 51.6 m above the ground. the ball just misses the edge of the roof on its way down, as shown in the figure. (a) determine the time needed for the ball to reach its maximum height. (b) determine the maximum height. (c) determine the time needed for the ball to return to the height from which it was thrown, and the velocity of the ball at that instant. (d) determine the time needed for the ball to reach the ground. (e) determine the velocity and position of the ball at t = 5.35 s.