What is low refrigerant charge? Low refrigerant means low pressure and low pressure means low temperatures that will eventually freeze something called an evaporator coil. When the evaporator coil freezes, cold liquid refrigerant flows through the refrigerant line, causing the surrounding moisture in the air to freeze. Why is my air conditioner low on Freon? […]
Does entropy disprove evolution?
Does entropy disprove evolution? Since life has had 4 billion years to evolve on Earth, the theory of evolution does not appear to be threatened by the second law of thermodynamics. Far from threatening evolution, as we will see, entropy actually functions as a thermodynamic driving force behind natural selection. Does entropy mean decay? As […]
What is linear and angular momentum?
What is linear and angular momentum? In physics, angular momentum (rarely, moment of momentum or rotational momentum) is the rotational equivalent of linear momentum. It is an important quantity in physics because it is a conserved quantity—the total angular momentum of a closed system remains constant. What is momentum flow? momentum flow = (mass flow) […]
Does lung volume increase with exercise?
Does lung volume increase with exercise? When you exercise and your muscles work harder, your body uses more oxygen and produces more carbon dioxide. To cope with this extra demand, your breathing has to increase from about 15 times a minute (12 litres of air) when you are resting, up to about 40–60 times a […]
How do you account for the BOD of seeded dilution water?
Why is the vector insert ratio important during ligation?
What is the efficiency of a coal fired power plant?
What is the efficiency of a coal fired power plant? Typical thermal efficiency for utility-scale electrical generators is around 37% for coal and oil-fired plants, and 56 – 60% (LEV) for combined-cycle gas-fired plants. Plants designed to achieve peak efficiency while operating at capacity will be less efficient when operating off-design (i.e. temperatures too low.) […]
What role does forecasting play in the supply chain of a build to order?
What role does forecasting play in the supply chain of a build to order? From cutting costs to keeping consumers happy, forecasting is a vital component of supply chain management, helping companies fill orders on time, avoid unnecessary inventory expenses and plan for price fluctuations. What role does Forecast play in the supply chain of […]
What did Melissa virus do?
What did Melissa virus do? The Melissa virus, reportedly named by Smith for a stripper in Florida, started by taking over victims’ Microsoft Word program. It then used a macro to hijack their Microsoft Outlook email system and send messages to the first 50 addresses in their mailing lists. Who created Melissa virus? David L. […]
Which bearing are used for crankshaft of IC engines?
Which bearing are used for crankshaft of IC engines? The sliding bearings used in internal combustion engines: Main crankshaft bearings support crankshaft providing its rotation under inertia forces generated by the parts of the shaft and oscillating forces transmitted by the connecting rods. Main bearings are mounted in the crankcase. What is the main function […]