PLEASE HELP! Need this ASAP (in 10 minutes) What happens to the speed (velocity) of a sound wave if the frequency decreases? (Assume the wavelength is constant.)
A. The speed is unchanged.
B. The speed quickly increases and then stops.
C. The speed increases.
D. The speed decreases.

It is reasonable to assume that the bulk modulus of blood is about the same as that of water (2.2 gpa). as one goes deeper and deeper in the ocean, the pressure increases by 10000 pa for every meter below the surface. if a diver goes down 80.0 m in the ocean, by how much does each cubic centimeter of her blood change in volume? give the answer in cubic centimeters (actually one cubic centimeter equals one milliliter).

During a car accident, a 125kg driver is moving at 31m/s and in 1.5s is brought to rest by an inflating air bag. what is the magnitude of the change in momentum to the driver

Which of these activities increases the amount of carbon in the atmosphere?