Several species of tuna migrate into the waters off of San Diego every spring. The water temperatures offshore get colder as you move north, and warmer as you move south. The water offshore in the spring is usually about 65 degrees near San Diego. Albacore tuna prefer colder water (60-68 degrees), bluefin tuna prefer warmer (64-70 degrees), and yellowfin tuna prefer even warmer water (66-80 degrees).
5. In the last 10 years, albacore have moved north to Oregon, bluefin are now here year-round, and yellowfin arrive earlier in the year. What would you infer has happened to water temperatures off of California? What do you think will happen in the future if this trend continues?

Athin plate moves between two parallel, horizontal, stationary flat surfaces at a constant velocity of v = 7.5 m/s. the two stationary surfaces are spaced 4 cm apart, and the medium between them is filled with oil whose viscosity is 0.9 n·s/m2. the part of the plate immersed in oil at any given time is 2 m long and 0.5 m wide. if the plate moves through the mid-plane between the surfaces, determine the force required to maintain this motion. what would your response be if the plate was 1 cm from the bottom surface (h2) and 3 cm from the top surface (h1)? if the plate moves through the mid-plane between the surfaces, the force required to maintain the motion will be n. if the plate was 1 cm from the bottom surface (h2) and 3 cm from the top (h1) surface, the force required to maintain the motion would be n.

If a tank filled with water contains a block and the height of the water above point a within the block is 0.8 meter, what is the pressure at point a?

(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present