An object is 21.0 cm to the left of a lens that has a focal length of +8.50 cm. A second lens, which has a focal length of -31.0 cm, is 5.40 cm to the right of the first lens. a. Find the distance between the object and the final image formed by the second lens.
b. What is the overall magnification?
c. Is the final image real or virtual?
d. Is the final image upright or inverted?
e. Draw a figure that is compatible with the problem.

The ozone hole appears in antarctica during

Explain what it means to view something from a frame of reference. provide an example that illustrates your explanation. (4 points)

Isobars are lines of constant or equal pressure on a weather map. they can be used to find areas of low or high pressure over a broad area, and they can tell us how intense the system may be. on weather maps, you may have noticed areas that have a large l or h over a region with lines circling around them. the l stands for low pressure and h stands for high pressure. the lines circling them are isobars. check out the pressure system and isobars over georgia and florida. what is the present weather in this area ? a) clear and sunny b) cold and cloudy c) changing weather d) lots of precipitation