A turbine blade made of Udimet 700 must be able to operate at a temperature of 1000°C (1832°F) for a time of 10,000 h between inspections. What is the maximum tensile stress for this blade based upon high-temperature creep rupture?
What will be an ideal response?
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Which of the following is true of spring tides?
A) They occur at noon and midnight every day. B) They occur at first- and third-quarter moons. C) They occur at dawn and dusk every day. D) They occur at new moon and full moon.
How much heat is required to raise the temperature of a 225-g lead ball from 15.0°C to 25.0°C? The specific heat of lead is 128 J/kg ? K
A) 725 J B) 576 J C) 145 J D) 217 J E) 288 J
The figure shows a distance vs. time graph of an object with three distinct regions, I, II, and III
?
The object’s acceleration is negative in region(s)
a.
I.
b.
II.
c.
III.
d.
no regions
An aircraft approaches a runway that runs directly east as a strong wind blows out of the south. The direction that the aircraft should points in order to land on the runway is __________
Fill in the blank(s) with correct word