Urgent: when traveling from an air to a solid, what would you expect a sound wave to do?

a. speed up

b. fluctuate speed

c. stay the same speed

d. slow down.

Write the equation for momentum, first using symbols for the variables, then using words for the variables.

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?

Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.6 m below the tank bottom which is a = 6.7 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute). report your answer in meters to two decimal places.