A sound wave has twice the intensity of another sound wave of same frequency. Calculate the ratio of amplitudes of the waves.

Aphysical change is a change in the size, shape,, or stafe of matter true or false

Which types of electromagnetic waves have higher frequencies than the waves that make up ultraviolet light? check all that apply. radio waves infrared light microwaves gamma rays visible light x-rays

An object weigh 40n in air ,weigh 20n when submerged in water,and 30n when submerged in a liquid of unknown liquid density.what is the density of unknown of liquid?