What is one way to increase the amplitude if a wave in a medium? a. by applying a vibration at the natural frequency of the mediumb. by increasing the velocity of the wave sourcec. by moving the source of the wave away from the receptor or observerd. by increasing the frequency of the wave source

Consider a file currently consisting of 200 blocks. assume that the file control block (and the index block in the case of indexed allocation) is already in memory. calculate how many disk i/o operations are required for contiguous, linked, and indexed (single-level) allocation strategies, for each of the conditions listed below. in the contiguous-allocation case, assume that there is not room to grow at the beginning but there is room to grow at the end. also assume that the block information to be added is stored in memory.

Suppose astronomers built a 140-meter telescope. how much greater would its light-collecting area be than that of the 10-meter keck telescope? express your answer using two sign

What energy transformations occur each time the skateboarder rolls up the ramp?