How does the rate at which steam enters the cylinders determine how fast the locomotive will move down the tracks?

fire + water = steam.  for most locomotives) entering a cylinder-piston assembly and pushing ... The gases move from the firebox forward through an array of pipes ... of drinking straws in a glass (only the glass would be resting on its side, ... gear used to control the speed power at cetera of the locomotive?

wood carving remains today the primary sculptural art form of the sub saharan continent. african art history shows the earliest wooden sculptures from the 17th c are attributed to the kuba, central zaire but the earliest surviving sub-saharan sculpture is a zoomorphic head found in 1928 in central angola.

i hope this .

it's lower nubia : ) good luck