30 POINTS A cannonball is shot from a cannon at a launch angle of 63o and an initial velocity of 147 m/s. The gravitational acceleration is −9.8 m/s2. Assuming NO air resistance, how long will it take the cannonball to reach the peak of its trajectory?

Question 5 options:

9.8 s

13.4 s

40.2 s

26.7 s

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt

Arigid tank is divided into two equal parts by a partition. one part of the tank contains 3 kg of compressed liquid water at 400 kpa and 60°c while the other part is evacuated. the partition is now removed, and the water expands to fill the entire tank. determine the entropy change of water during this process, if the final pressure in the tank is 40 kpa. use steam tables.

Mixing salt in water is an example of physical change