Apower plant burns 900kg of coal per hour and produces 480kw of power. if each kg of coal releases 5,9mj, determine the efficiency of the plant
b)air enters the nozzles at 3,0 bar, 1270c and 30m/s. during its passages a heat loss of 4,40kj/kg and the fluid leaves at 2,0 bar and 270m/s. the heat loss to environment ioccurs at 270c. calculate the final temperature, the entropy change of air and the total entropy change of the overall process, is the process reversible, irrevessible or impossible?

speed

ratio of distance traveled to time interval

net force

vector sum of forces on object

object

source of diverging light rays either luminous or illuminated

don't remove my answer im trying my best to answer them

explanation:

an energy transformation flow diagram is shown

where is it ?

multiply 2kg by latent heat of vap

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.