Three identical springs are arranged as shown below

7

Physics & Space Science

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A photon is emitted from a hydrogen atom that undergoes a transition from n = 3 to n = 2 . Calculate the energy and wavelength of the photon. (The ionization energy of hydrogen is 13.6 eV, and h = 6.63 × 10^?34 J/s, c = 3.00 × 10^8 m/s, 1 eV = 1.60 × 10^?19 J, and 1 nm = 10?9 m)

a. 1.9 eV, 660 nm b. 1.9 eV, 1050 nm c. 2.3 eV, 550 nm d. 2.3 eV, 660 nm e. 2.3 eV, 1050 nm

Physics & Space Science

The main way astronomers determine the physical and chemical properties of an object in the distant universe is through

A) photography B) spectroscopy C) astrometry D) direct measurement

Physics & Space Science

An ornament of mass 40.0 g is attached to a vertical ideal spring with a force constant (spring constant) of 20.0 N/m. The ornament is then lowered very slowly until the spring stops stretching. How much does the spring stretch?

A) 0.00200 m B) 0.0196 m C) 0.0816 m D) 0.800 m E) 0.200 m

Physics & Space Science

Compounds that occur in gaseous form at room temperature are ______________ compounds

Fill in the blank(s) with correct word

Physics & Space Science