Does a closed system obey the law of conservation of matter ? Explain why
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- 4.The rms speed of the molecules in 1.2 g of hydrogen gas is 1800 m/s. What is the total translational kinetic energy of the gas molecules? Express your answer with the appropriate units. Etotal = Submit Part B Value Request Answer Units What is the thermal energy of the gas? Express your answer with the appropriate units. ?Time of Death Newton's Law of Cooling is used in homicide investigations to determine the time of death. The normal body temperature is 98.6°F. Immediately following death, the body begins to cool. It has been determined experimentally that the constant in Newton's Law of Cooling is approxi- mately k = 0.1947, assuming that time is measured in hours. Suppose that the temperature of the surroundings is 60°F. (a) Find a function T(t) that models the temperature i hours after death. (b) If the temperature of the body is now 72°F, how long ag0 was the time of death?
- Do u know what is kg atom-1 in the equation? how did they convert kg mol-1 to kg atom-1?1. The maximum radiance of a blackbody is at wavelength λ = 1.2 µm. a) At what temperature does this occur? b) Estimate the brightness temperature for a grey body at this wavelength if the emissivity coefficient is 0.9. (Use the full formula.) ( hc1. Sketch a particle diagram that shows the motion of gas particles in a small container. 2. Sketch a particle diagram that shows the motion of gas particles in a large container. Your sketch should have the same number of particles as the previous diagram.