What is the base metal for superalloys that are used for the highest temperature applications?
(a) Nickel
(b) Iron
(c) Aluminum
(d) Titanium
(a) Nickel
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Two wheels have the same total mass M and radius R. One wheel is a uniform disk. The other is like a bicycle wheel, with lightweight spokes connecting the rim to a small hub. Which likely has the larger moment of inertia?
A. The solid disk. B. The wheel with spokes. C. The moment of inertia will be nearly the same for both. D. We need more information to answer.
When an air mass passes from a maritime source region to a warmer continental region, heating from the warmer land causes
A) frontal lifting. B) orographic lifting. C) convectional lifting. D) adiabatic lifting.
As plant engineer, Donna purchases an electrical motor which has an output of 1500. hp. If it requires 1.20 Megawatts of electricity, what is the efficiency of the motor?
What will be an ideal response?
Nuclear Fission and Fusion: The main fuel for producing energy in the center of the sun is
A. helium. B. hydrogen. C. uranium. D. any radioactive material. E. oxygen.