How many watts does a power washer use?

Where do b-cells come from? How does a supernova or a black hole get created? Seasonal winds that bring either moist or dry air? When and earthquake occurs Energy radiates in all directions of its source what is that source called? How is paper transported to the location were it is sold at? Why does Norfolk have flat land? When does the earth rotates through 360 degrees of longitude? How do you turn around without falling? Give facts about the asthenosphere? How are the actinide series elements created? How do scientist investigate natural phenomena? The iron is rusted is difficult to back its state again? A wave is defined as a rhythmic disturbance caused by blank moving from one place to another? Why is invertebrate zoology is not a special field of zoology? Why should the general public care about how memory works? Is braising done at the same temperature as soldering? How do you say carbon dioxide in french? What do chunks of continental glaciers produce when they break of from the edges of ice sheets? Is rust forming on an iron nail a chemical change? What color makes grass green?