Two incoherent sources of sound are at a distance of 20 m from each other. One emits sound at a power of 1 W while the other emits sound at a power of 2 W. If you are at a point on the line between the two sources, how far from the 1 W source must you be in order to hear both sources at the same loudness?

An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg.how much energy e must be supplied to the device? express your answer in joules.

What is the single most important equation in all of physics?

Debris produced by mining is called