(fluid mechanics)
the only thing i'm confused about is what formula i should use:

gasoline is siphoned from a large tank open to the atmosphere. the height difference from the top of the gasoline in the tank to the open end of the siphon is 1.0 m. what is the velocity of the gasoline as it comes out of the siphon?

The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.

Choose the most likely outcome of this scenario: jen decided to go bike riding without a helmet. while no one is around during her ride, she is thrown from her bike when her wheel goes into a pothole. she is not injured, but she is terrified to get back on her bike. what happens next? a. her physical health is affected even though she wasn't hurt. b. her mental and emotional health are affected because she is afraid to get back on her bike. c. her social health is affected because she is worried her friends saw the fall. d. her overall health is not affected at all by her fall.

Ahypothetical metal has an orthorhombic unit cell for which the a, b, and c lattice parameters are 0.413 nm, 0.665 nm, and 0.876 nm, respectively. (a) if there are 8 atoms per unit cell and the atomic packing factor is 0.536, determine the atomic radius (in nm). (b) if the density is 3.99 g/cm3, calculate the metal's atomic weight (in g/mol).