Does it take energy to freeze water? It takes 100 calories to heat 1 g. water from 0˚, the freezing point of water, to 100˚ C, the boiling point. However, 540 calories of energy are required to convert that 1 g of water at 100˚ C to 1 g of water vapor at 100˚ C. […]
Why are finches in the Galapagos Island A good example of speciation?
Why are finches in the Galapagos Island A good example of speciation? All the finches in the different islands share a common ancestor, which is a group of finches that initially migrated into the islands and conquered the different islands. Due to the different ecologies in the different islands, adaptive radiation of the finches occurred […]
How high can an airplane fly?
How high can an airplane fly? 31,000 to 42,000 feet How do planes avoid birds? Birds can detect airplane landing lights and weather radar and avoid the airplane. Airplane colors and jet engine spinner markings help to repel birds. Birds seek to avoid airplanes because of aerodynamic and engine noise. Do planes kill birds? Planes […]
How can a wheel and axle help us?
What food has a high pH level?
What food has a high pH level? Fruits and fruit juices high in acid lemon juice (pH: 2.00–2.60) limes (pH: 2.00–2.80) blue plums (pH: 2.80–3.40) grapes (pH: 2.90–3.82) pomegranates (pH: 2.93–3.20) grapefruits (pH: 3.00–3.75) blueberries (pH: 3.12–3.33) pineapples (pH: 3.20–4.00) What should I eat if I have too much stomach acid? Here are five foods […]
Does convex lens converge light rays?
Does convex lens converge light rays? Because a convex lens concentrates the light rays that are incident on it, it is called a converging lens. The bending of rays is maximal at the top and bottom of the lens. The distance from the optical center to the focal point is called the focal length of […]
Can you run 2 stroke gas in a 4 stroke?
Is longshore drift good or bad?
Is longshore drift good or bad? Longshore drift plays a large role in the evolution of a shoreline, as if there is a slight change of sediment supply, wind direction, or any other coastal influence longshore drift can change dramatically, affecting the formation and evolution of a beach system or profile. What’s the difference between […]
What are two factors that affect the force of gravity between two objects?
What are two factors that affect the force of gravity between two objects? When dealing with the force of gravity between two objects, there are only two things that are important – mass, and distance. The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the […]
What is the easiest kite to fly?
What is the easiest kite to fly? Parafoil Kites What is the best shape for a kite to fly? Box kites can be rectangular, hexagonal, tetrahedral or other shapes with frames that provide three-dimensional cells. These shape combinations give good lift and stability. What is the best kite in the world? Best Overall: Prism Synapse […]