A white dwarf is composed of

a. hydrogen nuclei and degenerate electrons.
b. helium nuclei and normal electrons.
c. carbon and oxygen nuclei and degenerate electrons.
d. degenerate iron nuclei.
e. a helium burning core and a hydrogen burning shell.


C

Physics & Space Science

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Two pipe columns are required to have the same Euler buckling load Pcr. Column 1 has flexural rigidity EI1 and height L; column 2 has flexural rigidity (2/3) EI2 and height L. The ratio (I2/I1) at which both columns will buckle under the same load is approximately:

(A) 0.8
(B) 1.0
(C) 2.2
(D) 3.1

Physics & Space Science

At what rate is thermal energy generated in the 5-? resistor when ? = 24 V?



a.
13 W

b.
3.2 W

c.
23 W

d.
39 W

e.
51 W

Physics & Space Science

Inductive Reactance is actually a consequence of

A) Gauss's Law. B) Coulomb's Law. C) Faraday's Law. D) Newton's Law.

Physics & Space Science

If a red filter were placed in front of blue dungarees, you would see

A) white. B) green. C) blue. D) red. E) black.

Physics & Space Science