Category: Physics

Who is eligible to catch a forward pass in a game of flag football? 15. Legal Forward Pass: All players are eligible to touch or catch a pass. During a down and before a change of possession a forward pass may be thrown provided the passer’s feet are behind the offensive line of scrimmage when […]

What is the risk of heart attack? About half of all Americans (47%) have at least 1 of 3 key risk factors for heart disease: high blood pressure, high cholesterol, and smoking. Some risk factors for heart disease cannot be controlled, such as your age or family history. But you can take steps to lower […]

Why should you never heat a closed system? If you heat an organic compound in a closed-system distillation apparatus that is not properly vented, it can build pressure and potentially burst. The resulting explosion can cause dangerous flying glass, hot, corrosive chemicals to spatter and potentially hazardous fumes to be released. What is the most […]

What is tabulation and classification? Classification. Tabulation. Meaning. Classification is the process of grouping data into different categories, on the basis of nature, behavior, or common characteristics. Tabulation is a process of summarizing data and presenting it in a compact form, by putting data into statistical table. What things will you keep in mind while […]

Why does a characteristic of an animal help them to live longer the tend to become more common in the population as a result of evolution by natural selection? In summary, a heritable characteristic that helps an animal or plant to have more offspring which survive to reproduce will tend to become more common in […]

Do Mules eat less than horses? Mules eat less than horses do. When mules are working, their grain ration is usually about 1/3 less than that of a horse of the same size. Of course, a mule must be fed enough for its size, its metabolism, and the work it is doing. Is a mule […]

What is the point of a 5-string violin? A 5-string enables one to play violin, viola, and even cello parts (an octave higher than written). If you like to improvise in any musical style, whether it’s bluegrass, jazz, hip-hop or rock, and wish you had a little bit more range to do so. What is […]

What are the primary traveling aids for a blind person? The primary traveling aids for a person who is blind are often a white cane or a trained guide dog. Independent travel involves some risk that can be greatly reduced when you, the driver, are aware of the use and meaning of a white cane […]

Are billiard balls the same mass? If you play pool, you may have noticed that when the cue ball strikes a target ball off-center, that they will separate at a 90-degree angle after the collision. This is because the collision is very elastic, and the balls are the same mass. How often should you replace […]

What does 1 2X4 weigh? The weight of pressure-treated lumber varies depending on the size of the boards. A 2-by-4-inch lumber board that is 8 feet long has a weight of 17 pounds. A 4-by-12-inch board that is 16 feet long weighs 224 pounds. Pressure treatment is a way of preserving wood to extend its […]