Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_261642_3 (r__ω_km_ VARCHAR, frequency__hz_ VARCHAR)
### Question:
What is the r (ω/km) when the frequency is 10k?
### Answer:
SELECT r__ω_km_ FROM table_261642_3 WHERE frequency__hz_ = "10k"