Which of the following is not a suitable application for a noble metal?
(a) Large parts in sea water, such as a ship hull
(b) Catalytic converters
(c) Human body implants
(d) Satellite parts
(a) Large parts in sea water, such as a ship hull
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A small dam, which may be idealized by a large slab 1.2 m thick, is to be completely poured in a short period of time. The hydration of the concrete results in the equivalent of a distributed source of constant strength of 100 W/m3 . If both dam surfaces are at 16°C, determine the maximum temperature to which the concrete will be subjected, assuming steady-state conditions. The thermal conductivity of the wet concrete may be taken as 0.84 W/(m K).
GIVEN
FIND
The maximum temperature (Tmax)
ASSUMPTIONS
Steady state conditions prevail
SKETCH
A wind of velocity 10 m/s is blowing through a wind generator with blade radius 5.00 meters. What is the maximum power output if 30.0% of the wind's energy can be extracted? ?air = 1.25 kg/m3
a. 7.20 kW b. 14.7 kW c. 21.3 kW d. 29.4 kW e. 39.6 kW
Answer the following statement(s) true (T) or false (F)
1. In example C4.2, if we had modeled the atoms as solid spheres instead of modeling the nuclei as point-like particles, we would have gotten the same result for the system’s center of mass
Optically mapping the Milky Way is made very difficult because of ________ in the disk
Fill in the blank(s) with correct word