CREATE TABLE table_28330 ("Frequency  ( Hz ) " TEXT, "R  ( \\u03a9/km ) " TEXT, "L  ( mH/km ) " TEXT, "G  ( \\u03bcS/km ) " TEXT, "C  ( nF/km ) " TEXT)

What is the r ( /km) when the frequency is 10k?
SELECT "R (\u03a9/km)" FROM table_28330 WHERE "Frequency (Hz)" = '10k'
SELECT "R (\u03a9/km)" FROM "table_28330" WHERE "Frequency (Hz)" = '10k'