Category: Physics

What color dissipates heat the fastest? black What material stays cool in the heat? Since then, they and other researchers have made a host of materials, including films, spray paints and treated wood, that stay cool in the heat. These materials all rely on enhancing a natural heat-shedding effect known as passive radiative cooling. What […]

How is angular frequency related to time? It is the reciprocal of the period and can be calculated with the equation f=1/T. Some motion is best characterized by the angular frequency (ω). The angular frequency refers to the angular displacement per unit time and is calculated from the frequency with the equation ω=2πf. What does […]

What is the importance of market equilibrium? Equilibrium occurs when the price is such that the quantity that consumers wish to buy is exactly balanced by the quantity that firms wish to supply, again there is no tendency for price to change. So, it is price that brings a market into equilibrium. What are examples […]

Is monoculture good or bad? Higher Revenues. By growing monoculture plants, farmers usually benefit from higher profits. For example, cultivating a single kind of crop that is best suited to development in specific climate conditions, allows the farmer to get better yields and, therefore, get higher income. Is monoculture farming sustainable? And the approach to […]

What is the relation between the force and acceleration? Newton’s second law of motion describes the relationship between force and acceleration. They are directly proportional. If you increase the force applied to an object, the acceleration of that object increases by the same factor. In short, force equals mass times acceleration. Can car move in […]

Does a chemical reaction occur when boiling water? Answer and Explanation: No, boiling water is NOT a chemical reaction, but it is a physical change. When water, H2 O, is in liquid form, it can be heated to a boil. Is Steam a chemical reaction? A physical reaction causes the matter to shift shape or […]

What happens to capacitance if distance is increased? Capacitance is directly proportional to the electrostatic force field between the plates. This field is stronger when the plates are closer together. Therefore, as the distance between the plates decreases, capacitance increases. Therefore, as the dielectric constant increases, capacitance increases. Is capacitance proportional to distance? Capacitance (C) […]

What makes a gun so powerful? The momentum imparted to the bullet by the gun is what makes a gun able to do so much damage. The momentum of an object equals its mass times its velocity. The momentum of an object, and therefore its ability to cause destruction, can be increased by making the […]

How is nanotechnology removed from the body? Even insoluble nanoparticles which reach the finely branched alveoli in the lungs can be removed by macrophage cells engulfing them and carrying them out to the mucus, but only 20 to 30 per cent of them are cleared in this way. Nanoparticles in the blood can also be […]

How are fossils older than 60000 years dated quizlet? Scientists measure the radiocarbon in the fossil to determine its age. Can only date specimens up to about 60,000 years old. Scientists measure the amount of argon in the rock to determine its age. Are all rocks radioactive? Almost all rocks and minerals exhibit a low […]