A 1.4 kg book is lying on a 0.78 m -high table. You pick it up and place it on a bookshelf 2.1 m above the floor. Part A During this process, how much work does gravity do on the book? Express your answer with the appropriate units. Wg = Submit Part B Wh = H Submit Value Request Answer During this process, how much work does your hand do on the book? Express your answer with the appropriate units. Value J Request Answer B J ? ?