Sort the statements based on whether they are correct or incorrect.
1. All waves have the same wavelength
2. Radio telescopes give us information about the birthplace of a star
3. If the wavelength of a wave increases, its frequency also increases
4. Visible light is a kind of electromagnetic wave
5. All objects emit electromagnetic waves

If you put a helium-filled balloon in the refrigerator, what will happen?

Which statement best describes the direction of the buoyant force on any object? a. opposite the force of gravity b. in the same direction as the weight c. in the direction of motion of the object d. opposite the direction of motion of the object

The path of a satellite orbiting the earth causes it to pass directly over two tracking stations a and b, which are 51 miles apart. when the satellite is on one side of the two stations, the angles of elevation at a and b are measured to be 87 degrees and 84 degrees, respectively. (a) how far is the satellite from station a? (b) how high is the satellite above the ground?