Humid air containing a water mass fraction of 0.0090 enters an industrial air conditioner where 30% of the water condenses. the flow rate of conditioned air from the air conditioner is 10,000 kg/hr. note: for this problem assume that air is a single component. [15 pts) practice drawing the process flow diagram. [the actual flow diagram can be found in the supplemental document. a. how many independent stream variables are there? b. how many known, given pieces of information de it is not an equation) are provided? c. how many independent material balances can you perform? d. are there any additional relationships (process specifications) provided? e. what are the degrees of freedom? f. what are the mass flow rates for the inlet humid air stream, the mass flow rate for the condensed water stream, and the mass fraction of water in the conditioned air stream?

the density of gold = 19.3 g/cm3

the relation between density and mass and volume is

density = mass / volume

given :

mass of gold = 13 g

density = 13g / volume = 19.3

volume = 13 /19.3 = 0.67 cm^3

thus volume of gold nugget = 0.67 cm^3

(newtons first law)

conservation of momentum law states :

momentum before collision = momentum after collision

momentum p (kg-m/s)= mass * velocity

say moving car=1 000 kg, velocity = 10 m/s then p = 1 000*10= 10 000 kg-m/s

say still car = 2 000 kg, velocity = 0 m/s then p = 2 000* 0 = 0 kg-m/s

total momentum prior to collision = 10 000 + 0 = 10 000 kg-m/s

momentum after collision = 10 000 kg-m/s

mass now = 1 000 kg+2 000 kg = 3 000 kg

10 000 = 3 000 kg* velocity m/s

10 000/3 000 = velocity

3.33 m/s = velocity after collision

an impulse is a force applied over time , momentum is exclusive of external forces and a perfect collision is implied

explanation:

a