Which converging lens has the greatest power? The convex lens of smaller focal length (= 20 cm) has greater power since focal length is reciprocal of power. Has more focal length then its power will be? Answer. Answer: Thick lens will have shorter and consequently thin lens will have greater focal length. Because, For a […]
How do maglev trains start moving?
How do maglev trains start moving? Maglev trains work on the principle of magnetic repulsion between the cars and the track. To begin motion, the train moves forward slowly on these wheels, allowing the magnets beneath the train to interact with those of the guideway. How does maglev trains run without wheels? This junkyard crane […]
What Crystal shape is best?
What Crystal shape is best? Learn what 7 common crystal shapes mean—and how to best use them. Cubes. If you need some grounding vibes in your life (don’t we all?), a cube-shaped crystal might be the perfect gemstone companion for you. Pyramids. Spheres. Tumbled stones. Crystal points. Hearts. Clusters. What are the basic types of […]
What is difference between series and parallel circuit?
What is difference between series and parallel circuit? In a series circuit, all components are connected end-to-end, forming a single path for current flow. In a parallel circuit, all components are connected across each other, forming exactly two sets of electrically common points. Which is an example of a parallel circuit? An example of a […]
How long does it take torn muscles to heal?
How long does it take torn muscles to heal? For a mild strain, you may be able to return to normal activities within three to six weeks with basic home care. For more severe strains, recovery can take several months. In severe cases, surgical repair and physical therapy may be necessary. With proper treatment, most […]
What do pilots say before landing?
What do pilots say before landing? Thank you.” To indicate the landing clearance or final approach, the Captain will either make the following announcement and/or blink the No Smoking sign. “Flight attendants, prepare for landing please.” “Cabin crew, please take your seats for landing.” Why do planes look slow when landing? Jeez, all these fancy […]
When 5800 joules of energy are applied to a 15.2 kg piece of lead metal How much does the temperature change by?
What is an example of a fusion reaction?
What is an example of a fusion reaction? Nuclear fusion is a process in which atomic nuclei are fused together to form heavier nuclei. Like fission, nuclear fusion can also transmute one element into another. For example, hydrogen nuclei fuse in stars to form the element helium. Is nucleosynthesis a fusion? Stars fuse light elements […]
How long should I wash my hands during the COVID-19 pandemic?
How long should I wash my hands during the COVID-19 pandemic? Thorough hand hygiene after any cough or sneeze is required. The WHO also recommends that individuals wash hands often with soap and water for at least 20 seconds, especially after going to the toilet or when hands are visibly dirty, before eating and after […]
Why do elements have different line spectra?
Why do elements have different line spectra? The energy levels that are allowed for each atom depend upon the number and arrangement of protons and electrons in the atom. As each element has different energy states available to it, each element releases photons of different color when its atoms return to their lower energy states. […]