9. What was the average acceleration of the car from 40 seconds to 46 seconds? Include the
correct units. Remember that A means final value minus initial value. What does the
negative number of your answer tell you about the acceleration of the car?
I

Suppose a diode consists of a cylindrical cathode with a radius of 6.200×10^−2 cm , mounted coaxially within a cylindrical anode with a radius of 0.5580 cm . the potential difference between the anode and cathode is 260 v . an electron leaves the surface of the cathode with zero initial speed (v initial=0). find its speed vfinal when it strikes the anode.