Is upward positive or negative? We consider the direction of gravity as positive and the upward direction as negative. Displacement is positive below the starting point and negative above. Velocity is positive in a downward direction and negative when going upward. For horizontal motion, right is positive and left is negative. Is lift an upward […]
What affects the jet stream?
What affects the jet stream? The factors that influence the flow of the jet stream are the landmasses and the Coriolis effect. Landmasses interrupt the flow of the jet stream through friction and temperature differences, whilst the spinning nature of the earth accentuates these changes. What happens if the AMOC stops? An AMOC shutdown may […]
Can oil in water be separated by decanting?
Can oil in water be separated by decanting? Decantation can be used to separate immiscible liquids that have different densities. For example, when a mixture of water and oil is present in a beaker, a distinct layer between the two consistency is formed, with the oil layer floating on top of the water layer. How […]
Why is carbon a non metal Class 10?
Why is carbon a non metal Class 10? (i) Carbon is brittle. (ii) Carbon forms covalent compounds and carbide ions (negatively charged). (iii) Carbon forms an acidic oxide (CO2) like other non metal forms. What is the slowest Pokemon? On the other end of the spectrum, the world’s slowest Pokémon are Shuckles, Munchlax and Pyukumuku, […]
What are 2 main types of scientific inquiry?
What are 2 main types of scientific inquiry? The word Science is derived from Latin and means “to know” Inquiry is the search for information and explanation. There are two main types of scientific inquiry: discovery science and hypothesis-based science. What is the scientific method of discovery? The process in the scientific method involves making […]
Is beating of drum periodic motion?
Is beating of drum periodic motion? The beating of the drum occurs at defined period. So, it is a periodic motion. Which is periodic wind? Periodic winds blow at regular intervals or in regular cycles. They are winds that result from localised differences in pressure and temperature. For example, land and sea breezes and the […]
What is PHI in RLC circuit?
What is PHI in RLC circuit? Conventionally, the phase angle between the voltage and current is symbolized by the Greek letter phi. The tangent of this angle is given by: tan (phi) = (XL-Xc)/R. The power dissipated in an RLC circuit is given by P = VI cos (phi). What is Susceptance formula? What is […]
What is the relationship between buoyancy and volume?
What is the relationship between buoyancy and volume? Compressible objects As a floating object rises or falls, the forces external to it change and, as all objects are compressible to some extent or another, so does the object’s volume. Buoyancy depends on volume and so an object’s buoyancy reduces if it is compressed and increases […]
When would you use cumulative frequency?
When would you use cumulative frequency? Cumulative frequency is used to determine the number of observations that lie above (or below) a particular value in a data set. The last value will always be equal to the total for all observations, since all frequencies will already have been added to the previous total. What is […]
What are the 5 functions of leaves?
What are the 5 functions of leaves? As one of the most important constituents of plants, leaves have several essential functions: Photosynthesis. Transpiration. Guttation. Storage. Defense. Conifer Leaf. Microphyll Leaf. Megaphyll Leaf. What are two function of leaves? Its main functions are photosynthesis and gas exchange. A leaf is often flat, so it absorbs the […]