When does a title wave happen?

How is the centripetal force affected by the mass and the radius? Who are the proponents of the two theories of nature of light? How many pounds does 32oz of water weigh? What type of energy is used in washing machine? Why do we need to understand the relationship between conductors semiconductors and insulators? When a metal and a plastic ball are dropped on the same height in the end they both have the same change in potential energy or momentum? How many kilograms are in 345lbs? What is 14000 pounds in kg? How energy losses due to energy transformation in the home and work place can be minimised to reduce the impact on the environment? From this graph when you predict the next reversal occur and why? What are examples of physical properties in a solid? How many tons in a cubic meter of tar? What is the pulley system for a mousetrap car? How do you know if an object has move? Nuclear power without Uranium? Which force actually moves the car? Do pupils refract light? What is called irregular brain wave tracings? What energy is in a wall plug? Which more pressure formula of a lake 7 meters deep or the bottom of the river 2 meters shallower than the lake but hold greater volume of water?

When does a title wave happen?