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Physics, 21.06.2019 20:30
What property is a characteristic of a substance that can be observed and does not change the identity of the substance
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Physics, 22.06.2019 08:00
If a balloon is taken outside on a very cold day, what will occur?
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Physics, 22.06.2019 12:00
Infrared radiation has wavelengths that are shorter than visible light is part of the visible light spectrum has wavelengths that are longer than visible light has the same wavelengths as ultraviolet radiation
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Physics, 22.06.2019 12:30
Consider a 1000 w iron whose base plate is made of 0.5 cm thick aluminum alloy 2024-t6 (ρ = 2770 kg/m3 and cp = 875 j/kg°c). the base plate has a surface area of 0.03 m2. initially, the iron is in thermal equilibrium with the ambient air at 22°c. assuming 90% of the heat generated in the resistance wires is transferred to the plate, determine the minimum time needed for the plate temperature to reach 200°c.
Answers: 1
A 0.017 g coin sliding to the right at 0.255 m/s makes an elastic head-on collision with a 0.040 g c...
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