Fill in the blanks with the word that best completes each statement Scientists develop knowledge by making
about the natural world that may lead to a scientifi
question.
A scientific question may lead to a(n)
which can be tested.
The results of
can lead to changes in scientific knowledge.

The chemical effect of the endocrine system is longer lasting than the chemical effect of the nervous system. select the best answer from the choices provided t f

This problem has been solved! see the answera non-uniform fire escape ladder is 6.0m long whenextended to the icy alley below. it is held at the top by africtionless pivot, and there is neglibible frictional force fromthe icy surface at the bottom. the ladder weighs 250n, and it'scenter of gravity is 2.0m along the ladder from the bottom. amother and child of total weight 750n are on the ladder 1.5m fromthe pivot. the ladder makes an angle θ with the horizontal.find the magnitude and direction ofa) the force exerted by the icy alley on the ladderb) the force exerted by the ladder on the pivotc) do your answers in part a and b depend on the angle?

Need asap ‼️ 20 pts which gravitational force field diagram is drawn correctly? (answers in pictures below)