The bob (weight) at the end of a pendulum has a mass of 0.3 kilograms. The bob is pulled to position B and allowed to swing. It goes all the way to position C and swings back. The potential energy of the bob at position B is ____ joules. If the maximum height of the bob is 0.45 meters when it swings back, _____ joules of energy was transformed to thermal energy. Use g= 9.8 m/s- and PE = m x g x h.