Category: Physics

What is the full form of use? USE Log file Computing » File Extensions USE United States of Europe Governmental — and more… USE Unified Search Environment Computing » General Computing USE Usefulness, Satisfaction, and Ease Business » General Business — and more… USE Use, Standards, and Evaluation Business » General Business What is Army […]

What is the energy of a blue photon that has a wavelength of 450 nm in eV? 2.76 eV What is the energy of 1 photon of blue light? Energy of a blue photon: E=6.62×10-34x750x1012 = 6.62×10-22 joule. What is the frequency of blue light with a wavelength of 450 nm? The frequency of blue […]

Which forms of media are most powerful? Our world is more and more a single “information society”, and television, as the world’s most powerful medium of communication, is a key part of that society. Television can be a tremendous force for good. Why is social media so powerful? Yet, perhaps the biggest reason we see […]

How do you tell if your sister loves you? 15 Signs You Have the Sweetest Sister in the World You had someone who helped you build your character. You shared a lot of toys and gadgets with her. You gave each other real talk. You had someone to cover your back. You had someone to […]

How do you politely say Forgot? We forget things in different ways, and in English there are different phrases you can use to communicate that you forget something. “I lost my train of thought.” “It slipped my mind.” “It’s on the tip of my tongue!” “It doesn’t ring a bell.” “It went in one ear […]

Can loud sound kill you? The general consensus is that a loud enough sound could cause an air embolism in your lungs, which then travels to your heart and kills you. Alternatively, your lungs might simply burst from the increased air pressure. High-intensity ultrasonic sound (generally anything above 20KHz) can cause physical damage. Can you […]

Why for every 100 ml of oxygenated blood only 5 ml of oxygen is delivered to tissues? A normal person has about 15 grams of haemoglobin per 100 ml of blood. 1 gram of haemoglobin binds about 1.34 ml of O2. Thus on an average 100 ml of blood carries about 20 ml (19.4 ml […]

Is Fe3O4 acidic or basic? The microwave hydrothermally treated Fe3O4 particles were basic at pH <7.7 and acidic at pH >7.7, while the nontreated and base-treated particles did not show clear acidic or basic nature. Is PbO a base? Lead oxide is a metallic oxide which reacts with hydrochloric acid to produce lead chloride and […]

What is the focal length of a convex mirror whose radius of curvature is 32 cm? 16 cm What is the focal length of a convex mirror whose radius of curvature is 30 cm? Answer. Hence, the focal length of the given convex mirror is 16 cm. What is the focal length of a concave […]

How do you fix a landfill problem? 15 Easy Ways To Reduce Landfill Waste Donate Clothes. Believe it or not, the throwing away of clothing is one of the biggest contributions we make to landfills today. Reduce Food Waste. Eat Healthy. Save Leftovers for Next Day. Buy Things With Less Packaging. Boycott Plastic Water Bottles. […]