Alessandro Volta's theory of contact tension considered that the emf, which drives the electric current through a circuit containing a voltaic cell, occurs at the contact between the two metals. Volta did not consider the electrolyte, which was typically brine in his experiments, to be significant.
9) Ponte Colossus, Italy â 500 ft (152 m) You will find this 350 m long bridge awe-inspiring and an inspiring spot for an energetic sport like bungee jumping. It will take you an average of almost 4.5 seconds for the first fall. You need a lot of nerve power to sustain the 100 km/hr vertical velocity of the free fall.
If you bungee jump from 100 ft, how fast (in mph) will you be going when you have fallen 75 ft? If you (unfortunately) hit the ground, at what speed will you splat?2. An object is dropped and it takes 2.45 seconds to hit the ground. Estimate theoriginal height of the object and the impact speed.3.