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- In an experiment done by scattering 5.5-MeV a particles from a thin gold foil, students find that 10,000 a particles are scattered at an angle greater than 50⁰. (a) How many of these particles will be scattered greater than 110°? particles (b) How many will be scattered between 58° and 76°? particlesThe blackbody radiation emitted from a furnace peaks at a wavelength of 2.5 10-6 m (0.0000025 m). What is the temperature inside the furnace? answer ... KV(), 100- Exer.: Repeat the above example for saw tooth waveform shown Sol: V(t)=25t Vav.=50V -100 4Sec Vrms(Tme=57.75V Vrmsatesusd)=55.5V F.Fame=1.154 Error=0.0389%
- Galaxies tend to be strong emitters of Lyman a photons (from the n = 2 to n = 1 transition in atomic hydrogen). But the intergalactic medium—the very thin gas between the galaxies—tends to absorb Lyman a photons. What can you infer from these observations about the temperature in these two environments? Explain.Figure 1 of 1 > Energy (J) 4. 3. 2- 1- 1,2-1 +. -1 -21 K, + U, +Wt= K, + U, + AE %3D ext |||F(V)dV = dN N MV². -)dv 2RT M -3/2v² exp(- 2 TRT' = 4T(- Find the Vm value by considering the following curve 25 x 10- 20 x 10-4 298 K 15 x 10-4 10 x 10-4t 1500 K 5 x 10-+ Vm Vm u, m s-1 0osz 0007 0OSI np N NP
- What fraction of 5-MeV - particles will be scattered through angles greater than 8° from a gold foil (Z = 79, density=19.3 g/cm3) of thickness 10-8 m?In an experiment done by scattering 5.5-MeV ∝ particles from a thin gold foil, students fi nd that 10,000∝ particles are scattered at an angle greater than 50°. (a) How many of these particles will be scattered greater than 90°? (b) How many will be scattered between 70° and 80°?A beam of 8.0-MeV - particles scatters from a thin gold foil. What is the ratio of the number of ∝ particles scattered to angles greater than 1° to the number scattered to angles greater than 2°?