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Review Part A Before the advent of solid-state electronics, vacuum tubes were widely used in radios and other devices. A simple type of vacuum tube known as a diode consists essentially of two electrodes within a highly evacuated enclosure. One electrode, the cathode, is maintained at a high temperature and emits electrons from its surface. A potential difference of a few hundred volts is maintained between the cathode and the other electrode, known as the anode, with the anode at the higher potential. (Figure 1) Suppose a diode consists of a cylindrical cathode with a radius of 6.200x10-2 cm, mounted coaxially within a cylindrical anode with a radius of 0.5580 cm. The potential difference between the anode and cathode is 365 V An electron leaves the surface of the cathode with zero initial speed (Vinitial = 0). Find its speed Ufinal when it strikes the anode. Express your answer numerically in meters per second. ► View Available Hint's 5 AED o N O P ? Ufinal = Submit Previous Answers Request Answer Figure < 1 of 1 > X Incorrect; Try Again; 5 attempts remaining Provide Feedback Next > E - - - - - - - - - - - - - + - - -