Category: Physics

Are models always right? All models are approximations. Assumptions, whether implied or clearly stated, are never exactly true. All models are wrong, but some models are useful. Why do we need to model a physical system? In order to develop new concepts into prototypes and ultimately into products, physical system modeling is virtually a necessity. […]

What does output mean in math? Mathematical equations called functions use input and output replace the variables in an equation. The input is the known variable, while the output is the solution. The solution, f(x) is also the y variable, or output. To solve the equation, simply choose a number for x, the input. What […]

How fast is 70 km in miles per hour? Convert 70 Kilometers per Hour to Miles per Hour km/h mph 70.00 43.496 70.01 43.502 70.02 43.508 70.03 43.515 Which is faster 5 meters per second? In other words, 5 meters per second is 0.485 times the speed of Usain Bolt, and the speed of Usain […]

Where does the other 90% of energy not stored in the bodies of organisms and passed on to the next trophic level go? Notice that at each level of the food chain, about 90% of the energy is lost in the form of heat. The total energy passed from one level to the next is […]

Which Colour has the most energy? violet What color is the happiest? Yellow Which Colour is lucky for home? What color is best for manifesting? Green is the color of the earth and represents growth. This growth can be manifested in combination with the heart healing but can also be manifested in the form of […]

What were the 3 major ideas of the Enlightenment? An eighteenth century intellectual movement whose three central concepts were the use of reason, the scientific method, and progress. Enlightenment thinkers believed they could help create better societies and better people. Which impact of the Enlightenment is most important? It focused on the reasoning power of […]

How long should I boil 4 eggs? Cover them with cool water by 1 inch. Cover the pan with a lid and bring water to a rolling boil over high heat; when the water has reached a boil, reduce heat to medium-high and set the timer for the desired time. Boil for 6 – 7 […]

Are zero group elements and 8th group elements are same? Yes, zero group elements and 8th group elements are the same. It is called a zero group since all the elements except Xenon are non-reactive and have zero valency or zero electrons possible for splitting. What do the elements in group 18 8a have in […]

Is AB positive a rare blood type? Just 2% of donors have AB positive blood making it one of the rarest blood types in the country. Is O Negative a good blood type? O negative is the universal blood type. O negative blood type can only receive O negative blood. O negative donors who are […]

Where can gamma rays be detected? Gamma-ray detectors can be placed in two broad classes. The first are what would typically be called spectrometers or photometers in optical astronomy. These are instruments which are “light buckets” and focus on a region of the sky containing the object of interest collecting as many photons as possible. […]