Superman attempts to drink water through a very long vertical straw of length l. with his great strength, he achieves maximum possible suction. the walls of the straw don't collapse. a. find the maximum height through which he can lift the water. b. still thirsty, the man of steel repeats his attempt on the moon, which has no atmosphere. find the difference between the water levels inside and outside the straw.

How does convection affect our atmosphere? our layers of earth? our oceans?

Aplane takes off from an airport and flies to town a, located d1 = 215 km from the airport in the direction 20.0° north of east. the plane then flies to town b, located d2 = 230 km at 30.0° west of north from town a. use graphical methods to determine the distance and direction from town b to the airport. (enter the distance in km and the direction in degrees south of west.)

Which statement correctly describes the current in a circuit that is made up of any two resistors connected in parallel with a battery? a. the current in the battery and in each resistor is the same b. the current the battery equals to the sum of the currents in the resistors c. the current in the battery is less than the current in either resistor d. the current in the battery equals to the product of the currents in the resistors