An electromagnetic flowmeter is to be used to measure blood speed. A magnetic field of 0.145 T is applied across an artery of inner 1 5 diameter 3.80 mm. The Hall voltage is measured to be 92.2 \"V. What is the average speed of the blood flowing in the artery? :cm/s 17 A sample containing semicircle before striking a photographic plate. The 12c, 16O, and an unknown isotope is analyzed in a mass spectrometer. As in the figure, the ions move around a 12CJr and 160+ ions are separated by 3.070 cm on the plate, and the unknown isotope strikes the plate 2.370 cm from the 1ZCJ' ions. What is the mass of the unknown element? Accelcmjng potential Uniform 3 between poles of magnet 9 9 9 18 A sodium ion (Na+) moves along with the blood in an artery of diameter 1.00 cm. The ion has mass 22.99 u and charge +e. The maximum blood speed in the artery is 6.05 m/s. Earth's magnetic field in the location of the patient has magnitude 38.2 pT. What is the greatest possible magnetic force on the sodium ion due to Earth's field? N 19 Wire with current I > .. V Electron x A long straight wire carries a current of 57.1 A. An electron, traveling at 1.00 X107 m/s, is 5.40 cm from the wire. What force acts on the electron if the electron's velocity is directed toward the wire? If the direction of force is perpendicular to the current, enter a negative value