What was there just after the Big Bang?
A) nothing
B) the primeval fireball
C) a singularity
D) a black hole
E) everything was inside Earth
B
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You are asked to design a metal alloy for a high temperature application. What type of metal alloy phase diagrams should you consider first for this application?
(a) Continuous solid solution (b) Eutectic (c) Compound formation (d) Peritectic
Magnetic fields are produced by
A) a tiny fraction of moving electrical charges. B) most moving electrical charges. C) all moving electrical charges.
What did the COBE satellite find regarding the smoothness of the cosmic background radiation?
What will be an ideal response?
An 18 mm wide diffraction grating has rulings of 710 lines per mm. Light is incident normally on the grating. Monochromatic light of 506 nm wavelength is used. The largest angle from the normal at which an intensity maximum is formed is closest to:
A) 46° B) 44° C) 42° D) 40° E) 38°