Category: Physics

Where does the energy go when a ball bounces? When a bouncing ball falls, it initially gains speed or kinetic energy—the energy of motion. When it reaches Earth, it collides head-on with an incredibly massive object that is, from your perspective, at rest. The ball slows down, deforms temporarily and shoots back up. At what […]

What is Vitruvius theory? According to Vitruvius, architecture is an imitation of nature. As birds and bees built their nests, so humans constructed housing from natural materials, that gave them shelter against the elements. When perfecting this art of building, the Greeks invented the architectural orders: Doric, Ionic and Corinthian. Is Vitruvius theory correct? While […]

How do you know if you have vas deferens? Structure. There are two vasa deferentia, connecting the left and right epididymis with the seminal vesicles to form the ejaculatory duct in order to move sperm. In humans, each tube is about 30 centimeters (1 ft) long, 3 to 5 mm (0.118 to 0.197 inches) in […]

Why weight is measured in kg not in Newton? Yes. When we use kilograms to measure weight, we are actually referring to kgf or kilogram-force. From Wikipedia: One kilogram-force is equal to the magnitude of the force exerted by one kilogram of mass in a 9.80665 m/s2 gravitational field. In other words, the weight(force) of […]

Which branch of science is the most important? I used to think that chemistry was most important, because all matter is made up of atoms and this determines the properties of every material, and the chemical reactions that are responsible for all of life. (And if you forced me to give a simple answer, I’d […]

Why does a white shirt look blue? Often when working in the shade, or anywhere we need Cloudy or Shade white balance, we’ll often see a blue tint in the white clothing. I suspect this might be due to detergents being used which give a blue-ish tint to white clothing to make them appear cleaner. […]

What does the 2 mean in 3s2? tells us the electrons are in the n=2 energy level. But what do the superscripts 2 after the “s” and 6 after the “p” refer to? These refer to the number of electrons in that particular orbital/shell. So, for neon, there are 2 electrons in the 1s shell, […]

What are the benefits of taking the MIQ? The MIQ permits the comparison of the vocational needs of individuals with estimates of reinforcers present in 185 occupations representative of the major fields and levels of the world of work. The correspondence of occupational reinforcers to an individual’s needs permits the prediction of job satisfaction. What […]

Why Nitrogen is not a greenhouse gas? Oxygen and nitrogen are not greenhouse gases, because they are transparent to infrared light. These molecules are invisible because when you stretch one, it doesn’t change the electric field. In general, symmetrical molecules with only two atoms are not greenhouse gases. Why is sulfur dioxide not a greenhouse […]

What is the most densest element? element osmium What is the lightest natural metal? magnesium What are the 3 lightest metals? The first seven metals in the periodic table are lithium, beryllium, sodium, magnesium, aluminium, potassium and calcium, known collectively as the “lightest metals”. What is the lightest thing in the world? Graphene Aerogel What […]