Which of the following statements is false? Dissolving salt into water is an example of a mixture.

The mass of one piece of paper is the same even after it is ripped in half and the 2 pieces are measured again.

Increasing the temperature of water to a boil is a physical change.

The formation of a precipitate is the only way to see if a chemical change has occurred.

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

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

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 = 2.1 m below the tank bottom which is a = 7.4 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)