What makes a roller coaster go faster? The kinetic energy that makes a rollercoaster car move at speed comes from the potential energy the car gained when it was hauled to the top of the very first hill on the ride. The further they go down the hill, the faster they go, and the more […]
What season is the longest?
What season is the longest? Summer What season is the shortest day? As difficult as it is to believe, astronomical winter is, indeed, the shortest of the four seasons. Or, more correctly, Northern Hemisphere winter, also known as Southern Hemisphere summer, is the shortest season. What can I touch in spring? There are many objects […]
How do you apologize for turning in something late?
How do you apologize for turning in something late? How to Write a Note of Apology for Being Late Apologize and lay out a specific account of the situation. Acknowledge the consequences. Accept responsibility. Explain what happened. Promise that it won’t happen again. Show that you regret the situation. Offer to help correct the situation. […]
How do you say pay attention to detail?
How do you say pay attention to detail? When you are trying to show you are detail-oriented on your resume, be specific about what you have done that proves you are detail-oriented. For example, instead of merely saying “detail-oriented,” try including a statement like “analyzed data to check for errors and inaccuracies.” What type of […]
How we can measure shear rigidity?
How we can measure shear rigidity? Modulus of rigidity or shear modulus is the rate of change of unit shear stress with respect to unit shear strain for the condition of pure shear within the proportional limit. Modulus of rigidity formula is G = E/(2(1+v)), and modulus of rigidity is G, elastic modulus is E […]
What is the relationship between heat work and internal energy?
What is the relationship between heat work and internal energy? The relationship between the internal energy of a system and its heat and work exchange with the surroundings is: E = q + w (The form of work will be restricted to gaseous, PV-type for this discussion.) Interestingly, both q and w are not state […]
Why are mental maps useful?
Why are mental maps useful? Mental maps provide people with essential means of making sense of the world and of storing and recalling information about the patterns of Earth’s physical and human features. Students must build their mental maps to develop detailed understandings of peoples, places, and environments. Who gave concept of mental map? The […]
Is Natural Rubber expensive?
Is Natural Rubber expensive? The average annual price of natural rubber at the Singapore Commodity Exchange (one of the key global commodity exchanges for rubber) reached a high of 4.82 U.S. dollars per kilogram in 2011. Since then, the price decreased to an annual average of 1.64 U.S. dollars per kilogram in 2019. Why did […]
What is an example of a line plot?
What is the correct formula for calculating COP of heat pump?
What is the correct formula for calculating COP of heat pump? Answer. Explanation: COPHP = (Desired Output)/(Required Input) = (Heating Effect)/(Work Input) = QH/Wnet,in = 1 + (QL/Wnet,in) Both the COP of a refrigerator and a heat pump can be greater than one. Can COPs be less than1? The coefficient of performance (COP) of refrigeration […]