Mr. payne (80 kg) rides a motorcycle around a vertical loop 32 meters in diameter. at the top, his tires just touch the track. what velocity does he have to ride maintain minimal contact with the loop?

An air-filled capacitor is formed from two long conducting cylindrical shells that are coaxial and have radii of 26 mm and 103 mm. the electric potential of the inner conductor with respect to the outer conductor is - 700 v (k = 1/4πε 0 = 8.99 × 109 n · m2/c2) the energy stored in a 1.0-m length of this capacitor is closest to