Atree has a height of 3.40 cm and is placed in front of a concave mirror. the image of the tree is inverted, 1.60 cm tall, and located 14.0 cm in front of the mirror. find the focal length of the mirror.

Choose a synonym for the underlined homonym (a word with two or more meanings). i did not expect the boat to rock so much. a. boulder c. astound b. sway d. shock

Afisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. it takes a time of 2.20 s for the boat to travel from its highest point to its lowest, a total distance of 0.670 m . the fisherman sees that the wave crests are spaced a horizontal distance of 5.80 m apart. (a) how much is the wavelength? (b) find the period of the wave. (c) how fast are the waves traveling? (d) what is the amplitude a of each wave?

How to tell if a molecule is polar or nonpolar with electronegativity