What are examples of economic development? During the development, there is a population shift from agriculture to industry, and then to services. A longer average life expectancy, for example, is one of the results of economic development. Improved productivity, higher literacy rates, and better public education, are also consequences. What are the main indicators of […]
Are wild horses protected?
Are wild horses protected? The Wild Free-Roaming Horses and Burros Act was passed, unanimously, through Congress and signed by former President Nixon on December 15, 1971. It became Public Law 92-195, which protects wild horses and burros within designated territories on both Forest Service and Bureau of Land Management lands. Is it illegal to kill […]
Do spiders glow under UV light?
Do spiders glow under UV light? Many arthropods (insects, spiders, and relatives) have a secret: They glow under ultraviolet light. Lightning bugs and other bioluminescent animals produce their glow from a chemical reaction. UV expands this spectrum and in a way, exposes unique visuals and beauty normally not visible to the naked eye. What household […]
How do you preserve cut potatoes for french fries?
What is moving source and observer?
What is moving source and observer? If the observer moves toward the source at a speed vo, more waves are intercepted per second and the frequency received by the observer goes up. Effectively, the observer’s motion shifts the speed at which the waves are received; it’s basically a relative velocity problem. What are the four […]
Is the crate accelerating?
Is the crate accelerating? The crate has a horizontal acceleration equal to the tension T divided by m, the mass of the crate. What about the forces in the vertical direction? The upward normal force exerted by the floor on the crate, in this situation, is equal to the weight, the downward force of gravity. […]
How do you know if an equation has more than one solution?
How do you know if an equation has more than one solution? The equation simplifies to the point that it no longer contains a variable, but expresses a true equation, e.g. 0=0 . For example: 2x+2=2(x+1) simplifies in this way. The equation has an identifiable solution and is periodic in nature. For example: tan2x+tanx−5=0 has […]
Who performed at 2012 Grammys?
Who performed at 2012 Grammys? Paul McCartney received the MusiCares Person of the Year award on February 10, 2012, at the Los Angeles Convention Center, two nights prior to the Grammy telecast….Performers. Artist(s) Song(s) Bruno Mars “Runaway Baby” Alicia Keys Bonnie Raitt Tribute to Etta James “A Sunday Kind of Love” Who won the Grammy […]
How would you prove experimentally the law of conservation of mass?
How would you prove experimentally the law of conservation of mass? Hello, The law of conservation of mass states that during in a physical or chemical change, the mass of products remains equal to the total of reactants. Thus, we obtain Mass of product = Mass of reactants. This verifies the law of conservation of […]