The diagram above represents energy levels in a hydrogen atom. Each level is labeled with its energy (above the ground state of Level 1) in units of electron/volts (eV). The labeled transitions represent an electron moving between energy levels. Which transition represents the electron that emits a photon with the highest energy?
A) A
B) B
C) C
D) D
E) E
A) A
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Thermal Expansion: The coefficient of linear expansion of copper is 17 × 10-6 K-1 and that of steel is 12 × 10-6 K-1. At 12°C a steel rod has a diameter of 2.540 cm and a copper pipe has a diameter of 2.536 cm. Which one of the following quantities is closest to the temperature to which the copper pipe must be heated in order for the unheated steel rod to fit snugly in the copper pipe?
A. 53°C B. 81°C C. 93°C D. 105°C E. 143°C
Purchasing a products, following the company's social media accounts, sharing and article, or signing up for an account are examples of a(n) ______.
A. RWD B. SEO C. ROI D. CTA
The wavelength of light visible to the human eye is on the order of 5 × 10?7 m. If the speed of light in air is 3 × 108 m/s, find the frequency of the lightwave.
A. 3 × 107 Hz B. 4 × 109 Hz C. 5 × 1011 Hz D. 6 × 1014 Hz E. 4 × 1015 Hz
Radioactivity Basics: What are the mass number A and the charge (in units of e) for each of the following particles or rays?(a) beta-plus(b) beta-minus(c) gamma ray
What will be an ideal response?