Physics, 28.07.2019 05:40 polyanskiymichael
Listed below are sets of elements. which group contains elements that have the following characteristics: 1) at least one is a metalloid. 2) at least one forms an ion with a charge of -2. 3) at least one is a gas. 4) at least one is a halogen. a) oxygen, fluorine, and aluminum b) chlorine, sulfur, and silicon c) arsenic, oxygen, neon, hydrogen d) silicon, magnesium, neon, iodine
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Identify the theory that can be used to explain each phenomenon. answers diffraction: wave theory interference: wave theory reflection: both particle and wave theories refraction: both particle and wave theories
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Acommercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -35°c by rejecting waste heat to cooling water that enters the condenser at 18°c at a rate of 0.25 kg/s and leaves at 26°c. the refrigerant enters the condenser at 1.2 mpa and 50°c. if the compressor consumes 3.3 kw of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load, (c) the cop, and (d) the minimum power input to the compressor for the same refrigeration load.
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Listed below are sets of elements. which group contains elements that have the following characteris...
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