1. A proton, a neutron and an electron walk into a bar. The bar cleverly contains a uniform magnetic field that sorts the particles into appropriate sections according to their charge. Sketch three arrows, one for each particle, to demonstrate at which table in the bar they are going to end up in. (/3) B SALOON . . ...... ..... . . . . . ... . . . 2. A proton travels at 38.5 relative to an external magnetic field of magnitude 0.0844 T and experiences a force of 5.50 x 1017 N in magnitude. Calculate the speed of the proton. (/4) 3. A calcium ion is travelling to the west when it enters an external magnetic field and is deflected to the north. In what direction is the magnetic field pointing? (/1) 4. A 1.50 m long copper wire carries an electric current of 6.10 A east through a magnetic field of 5.20 x 102 T directed vertically downward. What is the magnitude and direction of the magnetic force acting on the wire? (/4) 5. An ion source contains two isotopes of sodium (Na - 22, Na - 23) and both isotopes are singly charged. These ions travel undeflected through the velocity selector of a mass spectrometer with the settings: B = 0.650 T E = 4.20 x 105 V/m a) Calculate the mass of each isotope using the masses of the subatomic particles on the data sheet (ignore electrons as insignificant mass). Do not round the masses for your final answer. (/2) b) Calculate the speed of the particles as they leave the velocity selector. (/3) c) Determine the radius of the deflection of each as observed in the ion detector. The strength of the magnetic field in the ion deflector is 0.350 T. (/6) d) Label the diagram below (see the lines on the detector!) as to what isotope is deflected along which of the paths. (/2) Spectrometer lon Accelerator (Magnetic Field) Source Velocity Selector B =0.350 T