Which of the following would change a boat's center of gravity?

a. change the material it is made from

b. put a small cabin directly over the current center of gravity

c. add two small anchors on the outside middle of the boat, one on starboard (right), one on port (left)

d. lengthen the mast (the large pole that holds the sail), which is located on the back of the boat

An important dimensionless parameter concerned with very high-speed flow is the mach number, defined as v/c, where v is the speed of the object such as an airplane or projectile, and c is the speed of sound in the fluid surrounding the object. for a projectile traveling at 1170 mph through air at 50 ˚f and standard atmospheric pressure, what is the value of the mach number?