Describe the difference between physical and chemical changes in terms of what happens to the molecules

Like a key in a lock, the shape of the. must bind with the. of the recieving neuron

Use the profile illustrated for problem (1). assume that the layer of silty sand fill (sm) is placed over the entire site. estimate the thickness of the fill (h - in feet) that will cause the effective vertical stress at the center of the clay layer to increase by 517.5 pounds per square foot.

As the distance from a magnet increases, what happens to the magnet force?