In a movie, the heroine saves the day by cutting a wire before the time runs out on a timer. how did she change the circuit? she changed a short circuit to an open circuit. she changed an open circuit to a closed circuit. she changed a closed circuit to an open circuit. she changed a closed circuit to a short circuit.

In a simplified model of the human eye, the aqueous and vitreous humors and the lens all have a refractive index of 1.40, and all the refraction occurs at the cornea, whose vertex is 2.60 cm from the retina. what should be the radius of curvature of the cornea such that the image of an object 40.0 cm from the cornea’s vertex is focused on the retina?

Arowboat passenger uses an oar to push the boat off the dock by exerting a force of 40n for 3.0s. what impulse acts on the boat.

Give an example in which the electrical energy changes to light energy