What is the importance of metastable state? In a three-level laser, the material is first excited to a short-lived high-energy state that spontaneously drops to a somewhat lower-energy state with an unusually long lifetime, called a metastable state. The metastable state is important because it traps and holds the excitation energy, building up a… What […]
Which is the best example of heat being transferred mainly by radiation?
Which is the best example of heat being transferred mainly by radiation? Heat transfer by radiation occurs when microwaves, infrared radiation, visible light, or another form of electromagnetic radiation is emitted or absorbed. An obvious example is the warming of the Earth by the Sun. A less obvious example is thermal radiation from the human […]
Can I sleep after I hit my head?
What tools do you need to find the density of an object?
What type of reaction is carbon dioxide and water?
What type of reaction is carbon dioxide and water? combustion reaction Where is dissolved carbon dioxide found? Water Can people smell carbon dioxide? It has no smell, no taste, and no sound. Neither people nor animals can tell when they are breathing it, but it can be fatal. Carbon monoxide (CO) is a by-product of […]
What factor influences a volcanoes eruptive behavior?
What factor influences a volcanoes eruptive behavior? Although there are several factors triggering a volcanic eruption, three predominate: the buoyancy of the magma, the pressure from the exsolved gases in the magma and the injection of a new batch of magma into an already filled magma chamber. What follows is a brief description of these […]
Is there a monster in the Mariana Trench?
Is there a monster in the Mariana Trench? Despite its immense distance from everywhere else, life seems to be abundant in the Trench. Recent expeditions have found myriad creatures living out their lives at the bottom of the sea-floor. Xenophyophores, amphipods, and holothurians (not the names of alien species, I promise) all call the trench […]
What branch is considered the first branch of government?
What branch is considered the first branch of government? Executive branch What order do the three branches of government gov in? Legislative—Makes laws (Congress, comprised of the House of Representatives and Senate) Executive—Carries out laws (president, vice president, Cabinet, most federal agencies) Judicial—Evaluates laws (Supreme Court and other courts) Why is the judicial branch the […]
How do you find the fundamental frequency on a calculator?
How do you find the fundamental frequency on a calculator? Fundamental frequency is calculated using the formula f = v/2*L where v is the speed of the sound wave, and L is the length of a tube or device the wave is traveling through. How do you find the fundamental frequency with length? Wave Velocity […]
Are glasses concave?
Are glasses concave? Concave lenses are used in eyeglasses that correct nearsightedness. Convex lenses are used in eyeglasses for correcting farsightedness, where the distance between the eye’s lens and retina is too short, as a result of which the focal point lies behind the retina. Is a Halfspace convex? It also says a halfspace is […]