An 8cm tall object is 15cm away from a lens and produces a real image that is twice the size of the object. A. Use the lens equation to calculate the focal length of the lens

B. If the same object were in the same position in front of a lens that had the same focal length as the one above, but was a diverging lens, how tall would the image be?

C. Now assume that the object is 6.0cm in front of the original converging lens. How tall will the resulting image be?

The force it would take to accelerate an 900-kg car at the rate of 6m/s2

Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 µc, what is the maximum magnitude? n/c

Which of the following statements correctly describes a transformer?