Category: Physics

Are bright stars very common? Bright stars are exceedingly rare; the faintest stars are by far the most common. Stars, as we classify them, come in seven different types: O, B, A, F, G, K, and M, arranged from bluest-and-hottest to reddest-and-coolest. Why do stars look so close to Earth? Stars make their own light, […]

What are the evidences of physical and chemical changes? Common physical changes include melting, change of size, volume, color, density, and crystal form. The classic baking soda and vinegar reaction provides evidence of a chemical change due to the formation of a gas and a temperature change. Is a change in texture physical or chemical? […]

How many miles a day can you kayak? On average, a reasonably experienced kayaker paddling a mid-sized solo boat can be expected to comfortably paddle between 10-20 miles a day. How hard is it to kayak 10 miles? A 10 mile kayak adventure will require about 5 hours to complete. But that’s not the entire […]

¿Por qué se me bloquea el móvil? El móvil se nos puede quedar bloqueado por diferentes motivos, pero que suelen tener algún factor en común, y ese factor puede ser la aplicaciones. A ésto se le llaman procesos en cache y si nuestro móvil está escaso de memoria RAM o de procesador, puede que le […]

Which quantity has same unit? Answer: Momentum and impulse both has same unit Kg ms-1. What are the 3 units of work? The SI unit of work is joule (J). Joule is defined as the work done by a force of one newton causing a displacement of one meter. Sometimes, newton-metre (N-m) is also used […]

What is load force? Force is a measure of the interaction between bodies. Force is known as a vector quantity, as it has both direction and magnitude. Load. Load is a term frequently used in engineering to mean the force exerted on a surface or body. What is the formula of load? Multiply the mass […]

What are antacids state their role in the treatment of indigestion? Antacids are medicines that neutralise the acid in your stomach to relieve indigestion and heartburn. What is antacids & example? Antacids are medicines that neutralize stomach acid to reduce heartburn. Examples of antacids include: Aluminium hydroxide gel (Alternagel, Amphojel) Calcium carbonate (Alka-Seltzer, Tums) How […]

How many skin cells do you lose a day? Bye-Bye Skin Cells Though you can’t see it happening, every minute of the day we lose about 30,000 to 40,000 dead skin cells off the surface of our skin. So just in the time it took you to read this far, you’ve probably lost about 40,000 […]

What goes against the laws of physics? 9 Objects Invented to Defy Physics. Perpetual Motion See-Saw – a concept of continuous motion. Gömböc – the object that corrects itself. The Uphill Water Fountain – a fountain that flows upwards. One-sided bulletproof glass – protect and shoot at the same time. Starlite – The miracle material […]

What do spores release? Spores are usually haploid and unicellular and are produced by meiosis in the sporangium of a diploid sporophyte. Under favourable conditions the spore can develop into a new organism using mitotic division, producing a multicellular gametophyte, which eventually goes on to produce gametes. Where can fungi spores be found? Fungal spores […]