A hard disk: . spins at 10000 RPM has 1200 tracks has 100 sectors / track has 1000 bytes per sector has 10 records per sector an average random seek time of 10 ms (1000 ms = 1 second) an adjacent track seek time of 1 ms How many milliseconds would it take to read 100,000 records sequentially (assuming track skewing to minimize rotational delays)