Explain the answers. you
1. a rifle is fired horizontally over a large flat plane. at the instant the rifle is fired, a student drops a second identical bullet from the same height as the rifle. which bullet hits the ground first?
2. a monkey is hanging from a tree branch. a scientist wants to shoot the monkey with a tranquilizer dart so she can study the monkey. she knows the monkey will be startled by the sound of the tranquilizer gun and will let go of the branch at the instant the gun is fired. where should the scientist aim to hit the monkey? (above it, below it or directly at it? )
3. a golfer hits a golf ball an initial velocity of 54m/s [42 degrees above the horizontal]. the ball lands on an elevated green that is 14m higher that the level from which the golfer hit the ball.
a) how far away horizontally from the golfer does the ball land?
b) what is the velocity of the ball when it lands?
show all the steps

The inside surface of a cylindrical-shaped cave of inner diameter 1.0 m is continuously covered with a very thin layer of water. the cave is very long and it is open on both ends. the water on the cave surface is at a constant temperature of 15.5 °c. the cave is constantly exposed to wind such that 15.5 °c air flows through the cave at 4.5 m/s. the kinematic viscosity of the air is 14.66 x 10-6 m2/s and the molecular diffusion coefficient of water vapor in the air is 0.239 x 10-4 m2/s. because the cave diameter is so large, the flow of wind down the length of the cave, in the x direction, can be treated like it is external flow and the cave surface can be approximated as flat where appropriate. calculate the x value, in a) the transition to turbulent flow occurs at rex meters, where the air flow transitions from laminar to turbulent along the inside surface of the cave b) calculate the x value, in meters, where the bulk steady state concentration of water vapor in the air flowing in the cave is 10% of the saturation concentration. assume the air at the surface of the water layer is 100% saturated with water vapor. assume the wind entering the cave contained no moisture before it entered the cave. take into account the transition from laminar to turbulent flow when solving part b