1. A long straight wire with density of 50 g/m is suspended by threads, as shown in the diagram below. A 10 A current in the wire experiences a horizontal magnetic force that deflects it to an equilibrium position angle of 20 ". I 20 - - F F a. What is the tension per unit length in the threads? b. What is the magnitude of the magnetic force F per unit length? c. What are the strength and direction of the magnetic field? (8 points)2. An electron in a CRT is accelerated through a potential difference of 10k V, and then passes through 2.0 cm wide region of uniform magnetic field into the page. a. What is the speed of the electron as it enters the magnetic field region? b. What magnetic field strength will deflect the electron by 10" c. If the same magnetic field found in part (b) is used and a proton instead is traveling in the magnetic field region. Will the angle of deflection be: 2.0 cm - Greater Smaller OV 10k V The same. Please check one and justify your answer. (8 points) Note in Part c, the proton will deflect upward rather than downward as in the case of the electron