Archimedes' principle can be used to calculate the density of a fluid as well as that of a solid. Suppose a chunk of brass with a mass of 490.0 g in air is found to have an apparent mass of 416.8 g when completely submerged in an unknown liquid. Required:
a. What mass of fluid does the iron displace?
b. What is the volume of iron?

Copper has free electrons per cubic meter. a 71.0-cm length of 12-gauge copper wire that is 2.05 mm in diameter carries 4.85 a of current. (a) how much time does it take for an electron to travel the length of the wire? (b) repeat part (a) for 6-gauge copper wire (diameter 4.12 mm) of the same length that carries the same current. (c) generally speaking, how does changing the diameter of a wire that carries a given amount of current affect the drift velocity of the electrons in the wire?

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.

What is the rate of 12 liters of water moving through a water hose in 4.0 minutes?