Ahorn on a boat sounds a warning, and the sound penetrates the water. how does the frequency of the sound in the air compare to its frequency in the water? how does the wavelength in the air compare to the wavelength in the water?

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19