At First, there is chemical Energy( in your muscels) which is Used to Push down the spring. This Energy becomes the Energy of the spring, which increases until you stop pushing. If you Put your hand away, the Energy of the spring will become kinetic energ. This Energy is at the highest Level the Moment the book ist Leaving the spring. Afterwards, the kinetic Energy decreases while the Gravitational Potential Energy increases.
The radio and the microwaves form a kind of destructive interference in the electromagnetic waves. This destructive interference leads to poor sound reception and uneven cooking. In order to avoid this radios, TVs should not be kept near the microwave ovens. This will avoid the occurrence of interference.
