Category: Physics

Why is Common Core bad? By focusing on grade-level skills that are highly academic in nature, the Common Core puts pressure on teachers at the early childhood and primary levels to teach using paper-and-pencil methods rather than using the rich exploratory experiential learning approaches that are developmentally appropriate for children from … What is the […]

How do you explain use? The is used to refer to specific or particular nouns; a/an is used to modify non-specific or non-particular nouns. We call the the definite article and a/an the indefinite article. For example, if I say, “Let’s read the book,” I mean a specific book. What layman means? 1 : a […]

How long is a freight train allowed to be? According to data that two Class I railroads provided to us, their average train length increased over the 10-year period of 2008 through 2017 by about 1,500 feet for one railroad (from about 6,000 to 7,500 feet, or up to about 1.4 miles) and about 1,200 […]

What proofreads the DNA for mistakes? Most of the mistakes during DNA replication are promptly corrected by DNA polymerase which proofreads the base that has just been added. The polymerase checks whether the newly-added base has paired correctly with the base in the template strand. If it is the correct base, the next nucleotide is […]

Is AlCl3 a Lewis acid or base? Aluminum chloride (AlCl3) is a Lewis acid because the aluminum atom has an open valence shell. When aluminum chloride is under discussion it is called a Lewis acid or an electrophile. Is Oh Lewis acid or base? A Lewis base is any substance, such as the OH- ion, […]

How do I hide formatting in Word? Show or hide tab marks in Word Go to File > Options > Display. Under Always show these formatting marks on the screen, select the check box for each formatting mark that you always want to display regardless if the Show/Hide. button is turned on or off. Clear […]

What is the 2 fastest thing in the world? List of animals by speed Rank Animal Maximum speed 1 Peregrine falcon 389 km/h (242 mph) 108 m/s (354 ft/s) 2 Golden eagle 240–320 km/h (150–200 mph) 67–89 m/s (220–293 ft/s) 3 White-throated needletail swift 169 km/h (105 mph) 4 Eurasian hobby 160 km/h (100 mph) […]

Why contactor is used in motor? A contactor is a large relay, usually used to switch current to an electric motor or another high-power load. Large electric motors can be protected from overcurrent damage through the use of overload heaters and overload contacts. What is difference between circuit breaker and contactor? A contactor is an […]

Does the brain sit in fluid? Being surrounded by CSF helps the brain float inside the skull, like a buoy in water. Because the brain is surrounded by fluid, it floats like it weighs only 2% of what it really does. If the brain did not have CSF to float in, it would sit on […]

What are the different levels of a food pyramid called? There are six categories in the Food Pyramid: the bread, cereal, rice, and pasta group (grains), the fruit group, the vegetable group, the meat, poultry, fish, dry beans, eggs, and nuts group (protein), the milk, yogurt, and cheese group (dairy), and the fats, oils, and […]