Stirring dry yeast into a bowl of hydrogen peroxide causes bubbles to form. blowing air into a glass of milk with a straw also causes bubbles to form. one of these is a physical change, and the other is a chemical change. how could you determine which type of change is occurring in each situation?

The car hoist allows the car to be driven onto the platform, after which the rear wheels are raised. if the loading from both rear wheels is 1380 lb, determine the force in the hydraulic cylinder ab. neglect the weight of the platform itself. member bcd is a right-angle bell crank pinned to the ramp at c. the force is positive if in tension, negative if in compression.

According to the tide table below what time of day will the highest tide occur?

What is the rate of change in a objects position?