Which one of the following words is the most appropriate option for fill in the blank: compound, component, mixed?
A machine that combines two or more simple machines is
called a(n)
machine.

Does work output exceed work input when a machine is used? a) yes, it does, as machines create energy. b) it depends on the type of machine used. c) no, it doesn’t, as machines are inefficient. d) no, it doesn’t, as machines cannot create energy.

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?

Light traveling in water, nwater = 1.33, strikes a plastic block at an angle of incidence of 51.4°; part of the beam is reflected and part is refracted. if the index of refraction of the plastic is 2.0, what is the angle made by the reflected and refracted beams?