Researchers condition a flatworm to contract when exposed to light by repeatedly pairing the light with electric shock. The electric shock is a(n) a. primary conditioner. b. conditioned stimulus. c. secondary conditioner. d. unconditioned stimulus.

Africtionless piston-cylinder contains 50 l of saturated liquid r-134a. the piston has a mass and an area resulting in an applied pressure of 500 kpa on the refrigerant. the refrigerant is now heated until its temperature rises to 70∘c. calculate the work (in kj) done during this process.

Which of the following is an example of motion in two dimensions?

In the first law of thermodynamics, triangle e=q-w, what does q stand for