What is the most frequently cited cause of multiple vehicle crashes? In fact, the National Highway Transportation Safety Administration (NHTSA) reports more than one out of four of all traffic fatalities and almost 17 percent of all fatal crashes in 2017 resulted from speeding. When a traffic collision does not lead to death, the most […]
What is good miles per gallon?
What is good miles per gallon? Don’t expect to attain higher than 20 mpg overall with a non-hybrid, and most offer less than 30 mpg on the highway. The best fuel-efficient non-electric vehicles get the following EPA-estimated combined numbers: Small Pickup: Chevrolet Colorado 2WD Diesel and GMC Canyon 2WD Diesel get 23 mpg. How much […]
Is RNA the same as DNA?
Is RNA the same as DNA? There are two differences that distinguish DNA from RNA: (a) RNA contains the sugar ribose, while DNA contains the slightly different sugar deoxyribose (a type of ribose that lacks one oxygen atom), and (b) RNA has the nucleobase uracil while DNA contains thymine. What is RNA and function? The […]
How fast do hockey players skate mph?
What is the density triangle?
What is the density triangle? The triangle is divided into three parts, with density occupying the top portion and mass and volume occupying the bottom two portions. The positions of each element of the triangle show us how they relate to one another through the formula above (Density = Mass / Volume, or ρ = […]
What are the factors affecting thrust?
What are the factors affecting thrust? FACTORS AFFECTING THRUST The factors that affect the thrust of a gas turbine engine include air density, airspeed/ram effect and engine RPM. Why does thrust decrease as airspeed increases? The faster the aircraft speed, the less acceleration is being created on the intake air. Therefore thrust decreases with increasing […]
What is the Mid Atlantic Ridge and why is it important?
What is the Mid Atlantic Ridge and why is it important? Mid-ocean ridges are geologically important because they occur along the kind of plate boundary where new ocean floor is created as the plates spread apart. Thus the mid-ocean ridge is also known as a “spreading center” or a “divergent plate boundary.” The plates spread […]
What is the function of hammer anvil stirrup?
What is the function of hammer anvil stirrup? Vibrations of the eardrum are in turn translated into oscillations of tiny bones (ossicles) found within the middle ear. The Hammer, Anvil, and Stirrup magnify the oscillations and relay this information to the chamber of the inner ear. What is a hammer in a ear? In ear […]
When discussing engines What is the ratio of output?
When discussing engines What is the ratio of output? When discussing engines, the ratio of output work to input work expressed as a percentage is called . Efficiency η is the ratio of input work over the output work. It is defined as: η=work done/heat absorbed=(Q₂-Q₁)/Q₁where Q₁ is the heat absorbed and Q₂-Q₁ is the […]
How many molecules are in a mole?
How many molecules are in a mole? The mole is represented by Avogadro’s number, which is 6.022×1023 atoms or molecules per mol. What is silica composed of? Silica (quartz): Silica, SiO2, is a chemical compound that is composed of one silicon atom and two oxygen atoms. It appears naturally in several crystalline forms, one of […]