Imagine that you volunteered to spin on the stool for the classroom demo on the conservation of angular momentum. Initially you spin at 3.74 radians/s by your arms outstretched and a moment of inertia of 5.34 kg m2.While spinning, you abruptly draw your arms in, reducing your moment of inertia to 1.60 kg m2. What is your angular speed as a result? Give your answer in radian/s
1. A sodium atom (Z = 11) contains 11 protons in its nucleus. Strictly speaking, the Bohr model does not apply, as the neutral atom contains 11 electrons instead of a single electron. but, we can apply the model to the outermost electron as an approximation, provided that we utilize an effective value Zeffective rather than 11 for the number of protons in the nucleus. (a) The ionization energy for the outermost electron in a sodium atom is 5.1 eV. Utilize the Bohr model with Z =Zeffective to compute a value for Zeffective. (b) Using Z = 11, decide the corresponding value for the radius r of the outermost Bohr orbit.(c) Using the value computed for Zeffective in part (a),decide the corresponding radius r of the outermost Bohr orbit.