If the moon disappeared, what effect would this have on the earth’s tides?
a) there would no longer be any tides.
b) the tides would be much more dramatic.
c) tides would not be as noticeable as they are now.
d) tides would happen only once each year.

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.

it should have an internal chamber and two thermometers sticking out of the top. the internal chamber will also be closed off from the outside.