Water flows through the pipe. Determine the net tension in the bolts if minor losses are neglected and the wheels on which the pipe rests are frictionless. [Hint: Consider to use the linear momentum equation in a control volume.]

11m per

Thick and thin filaments

Ican’t exactly answer this, but i can try to give a bit more info here.
astronomers are able to calculate a star’s life expectancy depending on its mass. (a larger star burns more gas, therefore having a shorter life span).
so astronomers can definitely predict the death of stars and the times they will die.
i hope this was in some way : )