It has a variable composition. B) Its color is different than pure gold. C) The gold atoms are not arranged in a repeating pattern. D) It can be melted and transformed into a different substance.
Ionic solids are therefore insulators, which is the right response. Choice "B."
<h3>Explain what an insulator is.</h3>
An insulator is any substance that prevents the energy—such as electricity, heat, or cold—from the moving through it easily. Good insulators include glass, plastic, rubber, and the wood.
<h3>Which insulator is the used most frequently?</h3>
The most popular and generally accessible type of insulation, blanket, comes in the form of rolls or batts. Flexible fibres, most frequently fibreglass, make up this substance. Additionally, natural fibres like cotton and sheep's wool are available in batts and rolls, along with artificial fibers and mineral wool.
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<span>The gases in air can be separated from one another through a process known as the fractional distillation of liquid air. This is a process that converts air into a liquid form and then allows it to be portioned out into layers and separated from one another. Because pure oxygen and nitrogen have a number of applications, this is a useful technique. </span>
Answer:
A beam of light (implicitly a plane wave) in vacuum or in an isotropic medium propagates in the particular fixed direction specified by its Poynting vector until it encounters the interface with a different medium. The light causes the charges (electrons,
atoms, or molecules) in the medium to oscillate and thus emit additional light waves that can travel in any direction (over the sphere of 4π steradians of solid angle). The oscillating particles vibrate at the frequency of the incident light and re-emit energy as light of that frequency (this is the mechanism of light “scattering”). If the emitited light is “out of phase” with the incident light (phase difference ∼= ±π radians), then the two waves interfere destructively and the original beam is attenuated. If the attenuation is nearly complete, the incident light is said to be “absorbed.” Scattered light may interfere constructively with the incident light in certain directions, forming beams that have been reflected and/or transmitted. The constructive interference of the transmitted beam occurs at the angle that satisfies Snell’s law; while that after reflection occurs for θreflected = θincident. The mathematics are based on Maxwell’s equations for the three waves and the continuity conditions that must be satisfied at the boundary. The equations for these three electromagnetic waves are not difficult to derive, though the process is somewhat tedious. The equations determine the properties of light on either side of the interface and lead to the phenomena of:
1. Equal angles of incidence and reflection;
2. Snell’s Law that relates the incident and refracted wave;
3. Relative intensities of the three waves;
4. Relative phases of the three light waves; and
5. States of polarization of the three waves.
Explanation:
<span>Contrails are clouds formed when water vapor condenses and freezes around small particles (aerosols) that exist in aircraft exhaust. Some of that water vapor comes from the air around the plane; and, some is added by the exhaust of the aircraft.</span>Aug 5, 2016