Q1. A 245 ball is tied to a string. It is pulled to an angle of 5.20 and released to swing as a pendulum. A student with a stopwatch finds that 10 oscillations take 10.5.
Q2. A juggler throws a bowling pin straight up with an initial speed of 7.00 .How much time elapses until bowling pin returns to the juggler's hand?
Q3. An explosion in the atmosphere (Patm = 101 kPa, Tatm = 20 degrees) instantaneously raises the static pressure at the explosion point to 1.42 MPa.
a) Is the wave(s) generated a finite compression shock wave or a series of expansion waves?
b) Assuming the waves(s) is locally planar; i.e. flow is normal to the waves(s), estimate the waves(s) velocity and static temperature, air velocity, stagnation pressure, and stagnation temperature behind the wave relative to the ground.