What are the different characteristics of waves? Waves are disturbances that travel through a fluid medium. Several common wave characteristics include frequency, period, wavelength, and amplitude. There are two main type of waves, transverse waves and longitudinal waves. Let’s talk about wave characteristics. How much time do you have to escape a tsunami? A tsunami […]
Why do plates move apart?
Why do plates move apart? The plates can be thought of like pieces of a cracked shell that rest on the hot, molten rock of Earth’s mantle and fit snugly against one another. The heat from radioactive processes within the planet’s interior causes the plates to move, sometimes toward and sometimes away from each other. […]
What happens when you mix sulfur and vinegar?
What happens when you mix sulfur and vinegar? hydrogen sulphide, formula H2S. This compund forms by a chemical reaction between the vinegar (an acid) and small amounts of metal sulphides (= compounds of a metal and sulphur). It has the well-known rotten-egg odour. These metal sulphides may be present in the ashes or may be […]
When can the water displacement method not be used?
When can the water displacement method not be used? Water displacement method to determine volume of a solid can’t be used for all solids. The reason for this is some solids will float on the water. Therefore the object’s density is less dense than the water. 3. Why is the displacement method used? The displacement […]
Does a step up transformer have more windings?
Does a step up transformer have more windings? A transformer that increases the voltage from primary to secondary (more secondary winding turns than primary winding turns) is called a step-up transformer. Conversely, a transformer designed to do just the opposite is called a step-down transformer. What is the turns ratio of a transformer What can […]
How long does it take to develop a new product?
How long does it take to develop a new product? If you have an experienced product developer on your founder team, and you have a product of moderate complexity, then you should be able to get your first prototype within about 3 months, and a final works-like-looks-like prototype within about 6-9 months. Which of the […]
What are the 4 cell theory?
What are the 4 cell theory? All living cells arise from pre-existing cells by division. The cell is the fundamental unit of structure and function in all living organisms. The activity of an organism depends on the total activity of independent cells. Energy flow (metabolism and biochemistry) occurs within cells. What is the cell theory […]
Can cause a change in motion?
Can cause a change in motion? A force is a push or pull that can cause an object to move, stop, or change speed or direction. 3. The greater the force, the greater the change in motion. Gravity (the earth’s pulling force) and friction (the force between two surfaces) are common forces that work against […]
Why are lays so empty?
Why are lays so empty? The cushion actually is nitrogen gas. Chip manufacturers fill bags with this preservative gas to help keep chips fresh. If it were filled with regular air, the chips would likely turn soggy and spoil. Why are crisp bags so empty? Manufacturers claim the space left in crisp packets is needed […]