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- 4. Newton showed that the rate of change of temperature is proportional to the temperature difference between the system and the surroundings: dT = -a(T – Tsurr) dt %3D Where a is a constant. a) Assume T = T; at t = 0 and find the integrated expression for T at time t. b) Since we know %3D S(T) = S(T;) + C ln Where C is the heat capacity deduce an expression for S(T) at time t.5. The number densityN/Vof gas molecules at a certain location in the space above our planetis about 1.00×1011m−3, and the pressure at the same location is 2.75×10−10N/m2. Whatis the temperature there?2. For nitrogen gas at a temperature of 50 0C calculate the following given that the molecular mass of nitrogen is 28 g. (change temperature to Kelvin and mass to kg)a) vrms b) vp and c) vavg
- 1. Would air at the same temperature feel the same? Why or why not? 2. Would your perceptions have changed if the cold water was 0° C and the warm water was 80°C? 3. . Why would it be important to be able to perceive the difference between 45°C and 80°C?2.) This slope will give you the change in weight (Newtons) per second. Knowing the latent heat of vaporization for liquid nitrogen, determine dQ/dt. Use the value LV=2.00×105 J/kg. Show your calculations here.4. Wind chill describes the additional cooling that occurs when skin is exposed to wind. The equation is W(v)=-0.17v³+18.4v²-584v-239 for 0 ≤ v ≤ 45, where v is the wind speed in metres per second. The units for W are megajoules per square metres per hour. Determine the speed of the wind that gives a minimum wind-chill factor.
- Question 1 During a 30-minute period under clear skies, 2.0 x 10 J of total solar energy were incident upon Bunche Hall. Use this information on energy and time to complete the following tasks. Calculate the mean incident radiant flux over that 30-minute period. What are the units for the previous answer for Radiant Flux Kelvin Meters Microns J/s^2 J/s Watts W/m^2 Nanometers W/m Joules Fahrenheit Celsius1. Thermal equilibration in a two-level atomic system: purely radiative case. Suppose a collection of two-level atoms has a specified radiative decay rate Yrad, = and no nonradiative decay, Ynr 0. The atoms are pre-cooled to absolute zero for long enough to come into equilibrium with №₂ 0, and then are suddenly moved at t = 0 into an enclosure with walls held at a finite temperature Trad. Find formulas for the populations N₁(t) and N₂(t), and for the temperature Ta(t) of the collection of atoms for t > 0. =Must give answer then also give answer in significant fig format 11. The coolest part of the sun is the region called the chromosphere, which is the region above the sun's apparent surface, or photosphere. At 1,100 km above the photosphere, the temperature of the chromosphere is about 3,500,K. What is this temperature in degrees Fahrenheit and degrees Celsius?.od
- I need help with this questionQ4: When you are sick your body temperature may be 39.0oC, compared to normal body temperaturegiven by 36.8oC. It was observed that body increased 0.525 MJ of heat energy. Calculate your mass? Takespecific heat of human body as Chaman=3470 J/kgoC. Human body cannot survive without sufficient watercontent in body. Justify your opinion based on scientific knowledge. If you replace water content of bodywith some other liquid, what changes you can observe?