Category: Physics

What is negative resonance? Negative Resonance Effect- Negative resonance effect occurs when the groups withdraw the electrons from other molecules by the process of delocalization. The groups are usually denoted by -R or -M. In this process, the molecular electron density is said to decrease. For example- -NO2, C=O, -COOH, -C≡N. What is difference between […]

What are the four basic earth systems? Everything in Earth’s system can be placed into one of four major subsystems: land, water, living things, or air. These four subsystems are called “spheres.” Specifically, they are the “lithosphere” (land), “hydrosphere” (water), “biosphere” (living things), and “atmosphere” (air). Which is the largest system on earth? geosphere How […]

What is H in Maxwell equations? The four Maxwell equations, corresponding to the four statements above, are: (1) div D = ρ, (2) div B = 0, (3) curl E = -dB/dt, and (4) curl H = dD/dt + J. Read More on This Topic. light: Maxwell’s equations. In the early 1860s, Maxwell completed a […]

What is the most popular personal retirement plan? IRAs. The IRA is one of the most common retirement plans. An individual can set up an IRA at a financial institution, such as a bank or brokerage firm, to hold investments — stocks, mutual funds, bonds and cash — earmarked for retirement. What happens to your […]

Can alkanes form hydrogen bonds? 1 Answer. The simple answer is none, as alkanes do not engage in hydrogen bonding. What is a 5 carbon chain called? List of straight-chain alkanes Number of C atoms Number of isomers Name of straight chain 3 1 propane 4 2 n-butane 5 3 n-pentane 6 5 n-hexane What […]

What does it mean if a girl says Nevermind? “Never mind.” means “I don’t really know how to explain this in a way you’ll understand.” “Nothing.” means “Something, but I’m going to test you to see how you react.” “So, who is she?” means “Okay, I’m trying really hard to not sound jealous, but I’m […]

Is 19 km/h wind strong? 10 to 19 km/h Weather wanes will move, leaves will rustle, and you’ll feel a breeze on your face. Situation normal. 20 to 29 km/h Strong enough to straighten flying flags and shake small tree branches. How much is 70 km in miles per hour? Convert 70 Kilometers per Hour […]

Why elastic force is called conservative force explain? A conservative force is a force done in moving a particle from one point to another, such that the force is independent of the path taken by the particle. It depends only on the initial and final position of the particle. Gravitational force and elastic spring forces […]

How fast is biodiversity being lost? These experts calculate that between 0.01 and 0.1% of all species will become extinct each year. If the low estimate of the number of species out there is true – i.e. that there are around 2 million different species on our planet** – then that means between 200 and […]

Do hens feel pain when laying eggs? Chickens have pain receptors that give them the ability to feel pain and distress. Put yourself in the shoes (or the feathers) of a battery hen—or 452 million of them, which is how many are used for their eggs each year. Why do hens cluck after laying an […]