A 40 kg man stands atop a 10 m ladder with a mass of 15 kg leaning
against the wall. If the ladder is in static equilibrium, what must be the
normal force from the ground, assuming the wall is frictionless?

Agas initially at p1 = 1 bar and occupying a volume of 0.5 liter is compressed within a piston–cylinder assembly to a final pressure p2 = 4 bar. (a) if the relationship between pressure and volume during the compression is pv = constant, determine the volume, in liters, at a pressure of 3 bar. (b) repeat for a linear pressure–volume relationship between the same end states. reference

Aphysical change is a change in the size, shape,, or stafe of matter true or false

What is the scientific definition of energy that relates to work