There are many types of drinks that have a neutral ph. which of the following is neutral? a. milk b. pure water c. coffiee d. orange juice

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?

What are the similarities & differences between a thermistor and a light dependent resistor in physics?

Adolphin emits ultrasound at 100khz and uses the timing of reflections to determine the position of objects in the water. part a what is the wavelength of this ultrasound? assume that temperature of water is 20 degrees c. answer in cm