Consider the circuit below. Switch S is closed at t = 0
What is the voltage across the capacitor C just after the switch is closed?
1.0
2.1 V
3.2 V
4.3 V
5.4 V
6.5 V
7.6 V
8.9 V
9.None of the above
10.Impossible to determine
1
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Henri Becquerel
A) discovered radium and polonium. B) discovered radioactivity. C) observed back-scattering from nuclei. D) invented the particle detector tube. E) proposed the tiny central nucleus idea.
Which of the following demonstrates the indeterminacy inherent in the microscopic [or atomic-level] world?
A) double slit experiment with electrons B) radioactive decay C) Both of the above. D) spontaneous creation of a positron-electron pair from a photon E) All of the above.
Water comes down the spillway of a dam from an initial vertical height of 170 m. What is the highest possible speed of the water at the end of the spillway?
a. 5.89 m/s b. 18.4 m/s c. 57.7 m/s d. 1 670 m/s e. 3 330 m/s
An electron in an infinite potential well (a box) makes a transition from the n = 3 level to the ground state and in so doing emits a photon of wavelength 20.9 nm
. (c = 3.00 × 108 m/s, h = 6.626 × 10-34J ? s, mel = 9.11 × 10-31 kg) (a) What is the width of this well? (b) What wavelength photon would be required to excite the electron from its original level to the next higher one?