Pregnancy lasts approximately 9 weeks (63 days) in the cat. However, it is not possible to detect pregnancy during the first 3 weeks. An experienced veterinarian may be able to palpate or feel the fetuses in the uterus of a relaxed cat, as the optimal time for pregnancy palpation is about 28-32 days of pregnancy.
Answers. Relevance. Rating Newest Oldest. The speed of electromagnetic waves in vacuum is the speed of light in vacuum because light is an electromagnetic wave: c = 299,792,458 meters per second, exactly (0.670617 billion mph).
As the speed per second of radio waves in a vacuum is about 300,000 km (about 3Ã10 [m/sec]), at 433 MHz the wave length Î» is. < Click to move to the calculation window >. There is a close relationship between the wave length of the radio wave and the characteristics of the antenna.