If frequency goes down, what happens to wavelength? does it get shorter or longer?

The intensity, or loudness, of a sound can be measured in decibels (db), according to the equation , where i is the intensity of a given sound and is the threshold of hearing intensity. what is the intensity, in decibels, [i(db)], when ? use a calculator. round to the nearest whole number. 8 9 19 80

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain

Properties seen when one one substance changes to another are known as properties