Ahorn on a boat sounds a warning, and the sound penetrates the water. how does the frequency of the sound in the air compare to its frequency in the water? how does the wavelength in the air compare to the wavelength in the water?

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?

What describes the particles in a liquid

Aparticle is moving around in a circle and its position is given in polar coordinates as x = rcosθ, and y = rsinθ, where r is the radius of the circle, and θ is in radians. from these equations derive the equation for centripetal acceleration.