Neutral hydrogen clouds appear ________ when viewed visually

Fill in the blank(s) with correct word


transparent or clear

Physics & Space Science

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The law of conservation of angular momentum states that when an object of a fixed mass changes its radius R, its rotation velocity V will change so that

A. R/V = constant. B. V2R = constant. C. V/R = constant. D. VR = constant. E. R2V = constant.

Physics & Space Science

The shape and size of a nucleus can best be described as

a. A perfect sphere of diameter 0.4 nm. b. A perfect sphere of diameter 4 x 10-18 m. c. A roughly spherical shape of diameter 4 x 10-18 m. d. A roughly spherical shape of diameter 4 fm.

Physics & Space Science

The circuit below contains three 100-W light bulbs and a capacitor. The emf ? = 110V. At the instant the switch S is closed, which light bulb is brightest?



a.
A

b.
B

c.
C

d.
A and B

e.
All three are equally bright.

Physics & Space Science

In the diagram, which of the transitions would absorb a photon with the smallest energy (longest wavelength)?

image
a. Transition 1
b. Transition 2
c. Transition 3
d. Transition 4
e. Transition 5

Physics & Space Science