If we doubled the magnifying power of the most powerful optical microscope in the world, we would
A) be able to see individual atoms.
B) be able to photograph individual atoms, even though we couldn't see them.
C) still not be able to see or photograph an atom.
Answer: C
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A nonrelativistic electron is accelerated from rest through a potential difference. After acceleration the electron has a de Broglie wavelength of 880 nm
What is the potential difference though which this electron was accelerated? (h = 6.626 × 10-34 J ? s, e = -1.60 × 10-19 C, mel = 9.11 × 10-31 kg) A) 1.9 µV B) 1.7 µV C) 2.2 µV D) 2.5 µV
What is the spectral type of the Sun?
A) K9 B) G2 C) F7 D) A2
A blue camera filter appears blue because it transmits blue light, absorbing all other colors
Indicate whether the statement is true or false
As the ball rolls from A to B its velocity increases and its acceleration
1) increases; 2) decreases; 3) remains constant; and when it rolls from B to C its acceleration along the path 4) increases. 5) decreases. 6) remains constant.