Category: Engineering

How long have lungfish been around? The Dipnoi first appeared in the Early Devonian Epoch (about 419.2 million to 393.3 million years ago), and the extant species occur in rivers and lakes in Africa, South America, and Australia. How old is the lungfish? Life history cycle The species can live to at least 20-25 years […]

What do stink bugs symbolize spiritually? “The Stink Bug can show the connections between seemingly separate unrelated events with heightened intuition. Stink Bug aids with clarifying dreams, visions and insights. She can show the connections between seemingly separate unrelated events with heightened intuition. Is seeing a stink bug good luck? According to some old folk […]

Are garnets worth anything? Prices range from $500 a carat for good colors with some inclusions, to $2,000 to $7,000 for clean larger stones with top color. Demantoid garnet is the rarest and most valuable of the garnets and is one of the rarest of all colored gemstones. How do I value a garnet? How […]

What do you do with a dead possum in your backyard? Place the dead possum in a plastic garbage bag and tie the bag tightly. Place the plastic bag in a garbage can with a lid. Alternatively, place it in a cardboard box and tape the box shut. Keeping the carcass in a closed container […]

What causes the oceans water levels to rise and fall? Global sea level is rising from two primary causes: the expansion of ocean water as it warms; and increased melting of land-based ice, like glaciers and ice sheets in Greenland and Antarctica and other “upland” areas. As the ocean and the atmosphere continue to warm, […]

What should I bring to the Gobi Desert? In addition to the pile jacket or sweater and windproof jacket recommended for all Gobi trips, pack a set of long (top and bottom) underwear, a warm hat and a pair of gloves. You may want to pack some extra warm clothing if you get cold easily; […]

Do you have to tell insurance about past accidents? Answer: Yes, if you’ve been in an accident and had a claim paid out for your car, then you’ll need to inform any new car insurance company of this incident — even if you were on someone else’s auto insurance policy at the time. What happens […]

Is marginal revenue equal to average revenue? A competitive firm’s marginal revenue always equals its average revenue and price. In a monopoly, because the price changes as the quantity sold changes, marginal revenue diminishes with each additional unit and will always be equal to or less than average revenue. When marginal revenue equal marginal cost […]

What is a complex potential? [′käm‚pleks pə′ten·chəl] (fluid mechanics) An analytic function in ideal aerodynamics whose real part is the velocity potential and whose imaginary part is the stream function. What is complex potential function in fluid mechanics? so that the derivative of the complex potential W in the complex z plane gives the complex […]

When do male kittens get balls? The testes develop near the kidneys within the abdomen and normally descend into the scrotum by two months of age. This may occur later in some cats, but rarely after six months of age. Cryptorchidism may be presumed to be present if the testicles cannot be felt in the […]