Category: Physics

What is an everyday example of chemical energy? Everyday Chemistry The very wood we burn and the airbags we face every time we enter a vehicle are examples of chemical energy. What is the best definition for chemical energy? The definition of chemical energy is energy released in a chemical reaction or absorbed in the […]

Can COVID-19 affect a newborn baby? COVID-19 is uncommon in newborns born to mothers who had COVID-19 during pregnancy. Some newborns have tested positive for COVID-19 shortly after birth. It is unknown if these newborns got the virus before, during, or after birth. Most newborns who tested positive for COVID-19 had mild or no symptoms […]

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 the difference between stored energy and usable energy? The stored energy is termed as potential energy while the working energy is termed as kinetic energy. The electricity used in our homes is also a form of energy because it is a form of usable power. The places from which the different energies are […]

How much force does a falling person have? OSHA limits the amount of force that a person should experience during a fall to 1,800 pounds. Forces greater than this can result in internal bleeding, damage, or death. When a personal fall arrest system is used, a shock-absorbing lanyard or fall limiter is the only way […]

What are the dangers of DNA testing? People may feel angry, depressed, anxious, or guilty about their results. In some cases, genetic testing creates tension within a family because the results can reveal information about other family members in addition to the person who is tested. Is DNA testing worth it? DNA tests can give […]

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 […]

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 […]

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 […]

Is burning of candle a reversible change? When a candle is burned, chemical reactions take place between the wax and oxygen. These chemical reactions release energy in the form of heat and light. These chemical reactions can’t be reversed back. What ways to change the materials? What are some ways of changing solid materials? Physical […]