Write out the electron configuration for the ground state of the phosphorus atom, which has 15 electrons
What will be an ideal response?
1s2 2s2 2p6 3s2 3p3
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Wien's Law: What is the frequency of the most intense radiation from an object with temperature 100°C? The constant in Wien's law is 0.0029 m ? K. (c = 3.0 × 108 m/s)
A. 2.9 × 10-5 Hz B. 3.9 × 1013 Hz C. 1.0 × 1013 Hz D. 1.0 × 1011 Hz
Color TV is produced by
A) cyan, magenta, and yellow beams of electrons merging at the screen. B) red, green, and blue beams of electrons merging at the screen. C) A single beam of electrons striking a triad of phosphors of red, green, and blue. D) A single beam of electrons striking a triad of phosphors of cyan, magenta, and yellow.
The drive chain in a bicycle is exerting a torque of 0.850 N ? m to the wheel of the bicycle. You can treat the wheel as a thin uniform hoop (or ring) with a mass of 0.750 kg and a radius of 33.0 cm. What is the angular acceleration of the wheel?
A) 10.4 rad/s2 B) 20.8 rad/s2 C) 5.20 rad/s2 D) 3.43 rad/s2 E) 1.06 rad/s2
A cube at 100°C radiates heat at a rate of 80.0 J/s. If its surface temperature is increased to 200°C, the rate at which it will now radiate is closest to
A) 160 J/s. B) 207 J/s. C) 320 J/s. D) 640 J/s. E) 1280 J/s.