A microscope that can view the surface of insulators with atomic resolution is

(a) A scanning electron microscope
(b) A scanning tunneling microscope
(c) A light optical microscope
(d) An atomic force microscope


(d) An atomic force microscope

Physics & Space Science

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The proper interpretation of the Hubble law (which relates the redshift of a galaxy to its distance) is that as time goes on, galaxies are____

a. staying relatively still in space while the space between the galaxies contracts b. moving away from a common center in space that is neither expanding nor contracting c. staying relatively still in space while the space between the galaxies expands d. moving away from a common center while the space between the galaxies expands e. moving toward a common center in space that is neither expanding nor contracting

Physics & Space Science

Like Titan, Triton has a nitrogen atmosphere

Indicate whether the statement is true or false

Physics & Space Science

Which of the following are examples of the effects of resonance? (Choose the best answer.)

1.the ringing sound that occurs when someone runs a wet finger around a wine glass 2.the shattering of a wine glass by the sound of a human voice at the proper pitch 3.the repeated pushing of a small child on a swing so as to get them to swing quite high 4.all of these

Physics & Space Science

At t = 0 the switch S is closed with the capacitor uncharged. If C = 30 ?F, ? = 50 V, and R = 10 k?, what is the potential difference across the capacitor when I = 2.0 mA?



a.
20 V

b.
15 V

c.
25 V

d.
30 V

e.
45 V

Physics & Space Science