Category: Physics

What is the saddest instrument? Participants judged the human voice as the most frequently used sad instrument, with the ‘cello, viola, violin and piano completing the top five. The triangle was judged the instrument least used for sadness, along with the cymbal, tambourine, wood block, and glockenspiel. Which instrument has the most beautiful sound? Theremin […]

What are the 5 defense mechanisms? Both Freuds studied defence mechanisms, but Anna spent more of her time and research on five main mechanisms: repression, regression, projection, reaction formation, and sublimation. All defence mechanisms are responses to anxiety and how the consciousness and unconscious manage the stress of a social situation. How do you break […]

How long do electric pencil sharpeners last? How long can a sharpener last? Most electric pencil sharpeners could last as long as 3000 times before the battery gets low. If you are lucky enough to have an electric sharpener that uses AC too, it might last longer than that. Which electric pencil sharpener is best? […]

How long does it take for a big rig to stop? about 6 seconds How long does it take an 80000 pound truck to stop? Trucks need more time to stop In comparison, a fully loaded tractor-trailer weighing 80,000 pounds traveling under ideal conditions at a speed of 65 miles per hour will take 525 […]

What grows exponentially in real life? One of the best examples of exponential growth is observed in bacteria. It takes bacteria roughly an hour to reproduce through prokaryotic fission. If we placed 100 bacteria in an environment and recorded the population size each hour, we would observe exponential growth. How do I calculate exponential growth? […]

What is the correct flow of energy? The flow of energy is always unidirectional. The energy passes from primary producers to primary consumers. From the primary consumers, the energy is passed to secondary consumers and then to tertiary consumers. How does the energy cycle work? The energy is used to continue life’s processes (i.e. reproduction, […]

What happens if you shine red light on a blue object? So what happens if you shine only red light onto a blue object? All of that red light gets absorbed and the blue object will seem to be dark, almost black. If you now shine a blue light onto that blue object all the […]

Can you buy a baby giraffe? There are only a few individuals who own giraffes, and these raise them so that eventually they can be purchased by a zoo. Simply put, giraffes are not only wild animals, but they can grow to more than 16-20 feet tall and weigh an average of 2,628 lbs. How […]

Can eye muscles get sore? When your eyes are not properly aligned, you may experience double vision, which the brain rejects. To compensate for the misalignment and keep your eyes moving in sync, the extraocular muscles have to work overtime. Eventually, these tiny muscles become strained and fatigued, leading to a range of painful symptoms. […]

What is the value of k in electrostatics? The symbol k is a proportionality constant known as the Coulomb’s law constant. The value of this constant is dependent upon the medium that the charged objects are immersed in. In the case of air, the value is approximately 9.0 x 109 N • m2 / C2. […]