Category: Physics

What was the main purpose of this World War II poster? These posters were intended to rouse the nation’s spirit and convey a sense of common purpose. They promoted patriotism, productivity, and sacrifice. They helped convince Americans during World War II to put up with shortages, obey rationing rules, and maintain wartime secrecy. How is […]

Is it better to connect Christmas lights in series or parallel? Series Lights. When lights are attached in series, the electricity passes from the power source to the first light, and then from light to light until it returns to the power source. When lights are attached in parallel, each light is on its own […]

Can zinc be used to protect iron from rusting? Galvanising is a method of rust prevention. The iron or steel object is coated in a thin layer of zinc. This stops oxygen and water reaching the metal underneath – but the zinc also acts as a sacrificial metal . Zinc is more reactive than iron, […]

What is the resolving power of an electron microscope? Since the wavelength o f electrons are 100,000 times shorter than visible light the electron microscopes have greater resolving power. They can achieve a resolution of 0.2nm and magnifications upto 2,000,000 x. Light microscopes show limited resolution than electron microscopes. Which lens has the greatest resolving […]

What does phenomena mean in English? 1 plural phenomena : an observable fact or event. 2 plural phenomena. a : an object or aspect known through the senses rather than by thought or intuition. b : a temporal or spatiotemporal object of sensory experience as distinguished from a noumenon. How do you say natural phenomenon? […]

How do I know if I have a central bright fringe? In a YDSE, the central bright fringe can be identified : A. as it has greater intensity than the other bright fringes. B. as it is wider than the other bright fringes. C. as it is narrower than the other bright fringes. D. by […]

Are emotions metaphysical? Emotions are, on one level, chemical reactions – just as on another level, our emotional reactions are very much influenced by our mental attitudes. But emotions are also energy that exists in a very real way on the etheric plane in the emotional body. How do you know if your spiritually connected […]

Does G Sync reduce input lag? GSYNC itself does have a constant increase in input lag, but it is very very minor, and the frame consistency it offers makes it an incredible option. To see the effects of GSYNC Off at 144Hz vs GSYNC On at 138Hz, for example, run a game like Star Wars […]

How deep can a pond be? The deep water of a pond also allows water to remain cooler throughout the summer months. Having most of a ponds depth between 10-12 feet is ideal. The ideal average water depth is 8 feet. Some people love beach areas. How big is a pond before it becomes a […]

What are the properties of tensile strength? Properties that are directly measured via a tensile test are ultimate tensile strength, breaking strength, maximum elongation and reduction in area. From these measurements the following properties can also be determined: Young’s modulus, Poisson’s ratio, yield strength, and strain-hardening characteristics. What is meant by impact strength? Impact strength […]