Aslide is held in front of a projector, at a distance d= 74.8 cm from the screen where one can see the slide image. the image is focused on the screen by a thin lens of focal length f = 18.7 cm. a) draw a diagram showing the lens, the optical axis, the two principal rays going through the first and second focal points, and the image. b) at what distance from the slide should the lens be placed? c) is the image erect or inverted? what is the lateral magnification in this case?

Arotating space station is said to create “artificial gravity”—a loosely-defined term used for an acceleration that would be crudely similar to gravity. the outer wall of the rotating space station would become a floor for the astronauts, and centripetal acceleration supplied by the floor would allow astronauts to exercise and maintain muscle and bone strength more naturally than in non-rotating space environments. if the space station is 200 m in diameter, what angular velocity would produce an “artificial gravity” of 9.80 m/s^{2} 2 at the rim?

Select the three ways that the parallel-plate capacitor differs from a car battery.

Decreased sensitivity to an unchanging stimulus is known as