When radiation from an object passes through the interstellar medium:
a. the object appears dimmer;
b. the object appears bluer;
c. the object appears bluer and dimmer;
d. the object appears redder and dimmer.
Answer: d. the object appears redder and dimmer.
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A transformer has 200 turns on its primary and 12 turns on its secondary. If the input voltage is 2000 V, what is the output voltage?
A. 
B. 240 V
C. 170 V
D. 120 V
E. 100 V
How much kinetic energy must a deuterium ion (charge = 1.6 × 10^–19 C) have to approach within 1.7 × 10^?14 m of another deuterium ion? (ke = 8.99 × 10^9 N·m2/C2 and 1 keV = 1.6 × 10^–16 J)
a. 50 keV b. 110 keV c. 10 keV d. 80 keV e. 140 keV
Objects which have contracted, but are of too little mass to establish thermonuclear reactions in their cores, are ________, which slowly continue to cool
Fill in the blank(s) with correct word
Aluminum alloys are readily deformed into shape because they have the _________-centered-cubic crystal structure.
Fill in the blank(s) with the appropriate word(s).