Answer and Explanation:
In thermodynamics, the overall heat transfer coefficient also referred as film effectiveness is a constant of proportionality between force drive for the heat flow and the heat flux.
It gives the measure of the heat transfer as a result of convection or conduction. The coefficient of overall heat transfer depends on surface area, resistance of the material, temperature difference, thickness, etc.
It is given by:
Q = UA
where
U = overall heat transfer coefficient
Its SI units is 
.
Answer:
the branch of science and technology concerned with the design, building, and use of engines, machines, and structures. Anything that involves engines, wires, etc. basically
Answer:
b. Gain management responsibilities
Explanation:
When you receive a vertical promotion, you are more likely to Gain management responsibilities than when you receive a horizontal promotion.
Answer:
Roughly, an electric toaster oven on for 30 minutes uses: d) 2 million Joules of energy
Explanation:
An average toaster oven uses around 1.2 kW (or 1200 W) of power.
If it is on for 30 minutes, we can calculate how much energy it will use, knowing that energy equals power times time (that the machine is using power), taking into account units (kWh=kW*h and J=W*s):
As we assumed the power of the toaster, it is enough to say that an electric toaster oven uses roughly 2 million Joules, as there is only an 8% (
) difference between our calculated value and the rough estimation.
