Answer the following statement(s) true (T) or false (F)
1. Suppose we have a vial of quantum systems that could either be boxes or harmonic oscillators. When we excite these systems and look at their emission spectra, we see two visible lines, whose wavelengths we measure. From this data, we can determine which kind of system we have.
2. Suppose we measure the wavelengths of the absorption lines of a vibrating diatomic molecule involving atoms whose masses we know. From this data, we can deduce the effective spring constant ks of the bond holding these atoms together.
1. FALSE
2. TRUE
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The conversion of mass to energy of other forms via nuclear fission is
A) less than 1%. B) about 10%. C) about 20%. D) about 30%. E) more than 30%.
A spaceship is headed toward Alpha Centauri at 0.999c. According to us, the distance to Alpha Centauri is about 4 light-years. How far away is Alpha Centauri according to the travelers in the ship?
A) also about 4 light-years B) very slightly more than 4 light-years C) very slightly less than 4 light-years D) quite a bit less than 4 light-years E) quite a bit more than 4 light-years
The number of impact craters on the slopes of Tharsis volcanoes suggests that they have been inactive
A) since Mars formed 4.6 billion years ago B) for at least a billion years C) for at least tens of millions of years D) only for the last few hundred years
Find the tension in an elevator cable if the 1 500-kg elevator is descending with an acceleration of 2.8 m/s2, downward
a. 1.9E+4 N b. 1.1E+4 N c. 4.2E+3 N d. 2.7E+1 N e. 2.1E+2 N