What is the 90 90 rule?

What is the 90 90 rule? Knowledge at a glance: The 90-90 rule points out experiences in effort estimation, according to which 90% of work performed and an estimated 10% of remaining effort in practice become 180% (90%+90%). … What is a good rule of thumb for when to abstract code out into a separate […]

Are brake rotors balanced?

Are brake rotors balanced? Some may notice little notches on the side of their new brake rotors. Those milled areas are a result of the process used to balance rotors, called “mill balancing”. A mill balanced brake rotor reduces vibration and is meaningful to the whole brake system. Brake rotors are made from castings. What […]

Why does temperature increase when CO2 increases?

Why does temperature increase when CO2 increases? When there’s more CO2 in the atmosphere, it makes the atmosphere warmer by trapping heat. Since humans are adding more CO2 to the atmosphere, that helps explain why temperatures are increasing around the world. What happens to temperature when carbon dioxide increases? Scientists say that doubling pre-industrial carbon […]

What brand of light bulbs last the longest?

What brand of light bulbs last the longest? LED Bulbs. LEDs usually have the longest lifespan, often lasting over a decade. Mostly, they are several times better than incandescent bulbs and most fluorescent bulbs. What does A15 mean on a light bulb? Another common A-series light bulb type is the A15 bulb which is commonly […]

How does a four bar linkage work?

How does a four bar linkage work? A four-bar linkage, also called a four-bar, is the simplest movable closed-chain linkage. It consists of four bodies, called bars or links, connected in a loop by four joints. Generally, the joints are configured so the links move in parallel planes, and the assembly is called a planar […]

What is the #1 fastest car in the world?

What is the #1 fastest car in the world? #1 SSC Tuatara Using a closed highway near Pahrump, Nevada, the SSC Tuatara managed a one-way run of 330 mph, despite tricky cross-winds. Combined with a previous run of 301 mph, the Tuatara’s two-way average, as certified by Guinness, is 316 mph, making it the fastest […]

How does laminar flow change to turbulent flow?

How does laminar flow change to turbulent flow? When the velocity was low, the dyed layer remained distinct through the entire length of the large tube. When the velocity was increased, the layer broke up at a given point and diffused throughout the fluid’s cross-section. The point at which this happened was the transition point […]

How do I calculate my graduation year?

How do I calculate my graduation year? To determine graduation year by your child’s age, establish her age as of May in the current year. Then subtract this age from 18 and add the result of that subtraction to the current year. If your daughter is 9 years old in May of 2015, for example, […]

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