2. Name parts 1 through 5: E = E₁ [e-(t/t)² e-(T/ro)² cos(w₂t - kz) பபட 1 2 3 4 5
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- 2/3 2/3 1/2 1/2 1/2 According to the plots choose the appropriate indices from below: A. [120] B. [001] C. [10] D. [112] E. [301] F. (111] G. H. [012 1. (230) J. (233) K. (131) L (135) M. (300) N. (100) O. (111) P. (010) What is the Direction of OA?49Do u know what is kg atom-1 in the equation? how did they convert kg mol-1 to kg atom-1?
- +92 9 メ で a 9ェ 5,2 Cm 9=1,8MC ?っこ,84C 44= 11,84 C CACULAT F iN q, THAT PRODUCE 9. 9. AND 4 AND Fy 2 of of4:54 Question 8 of 14 Which of the following indicates a spontaneous reaction under standard conditions? A) K = 8.6 x 10-² B) K = 7.9 x 10-8 C) K = 2.2 x 10² D) K = 9.2 x 10-45 E) K = 0.14 ..5GW Tap here or pull up for additional resources Submit (7. A body of unknown temperature is placed in a refrigerator at a constant temperature of 0 °F. If after 20 minutes the temperature of the body is 40 °F and after 40 minutes the temperature of the body is 20 ° F, find the initial temperature of the body. (use Newton's Law of Cooling/Warming) 8. A radioactive substance is known to decay at a rate proportional to the amount present. If initially there is 50 milligrams of the substance present and after two hours it is observed that the substance has lost 10% of its original mass, Find the time at which the material has decayed to one half of its initial mass.
- The normal boiling point of radon is -95.8 F.What is this temperature in kelvins?5. Calculate the mean, RMS, and most probable speeds for: 1) hydrogen molecule at temperatures of 100 K, 1000 K and 10,000 K and 2) xenon atom at temperatures of l100 K, 1000 K and 10,000 K. Assume the velocity distribution is a Maxwell-Boltzmann distribution for both.4. Show that the internal energy, U, of an Einstein crystal is given by: 3Nhv 3Nhvexp(-ßhv) 2 1-exp(-Bhv) + U = Hint: The following identity will avoid you having to use the chain rule: d In(1− ef(x)) = −(ƒ'(x)) e²“ dx 1-e
- F= k 1, n Y(m) electan 8.98 x10? %3D 1.6 X1U c) ro [S-21x16-" X(m) proten' = + 1.6 x15c to the magnitude g He forcel Calculete1. A star such as our Sun will eventually evolve to a “red giant” star and then to a “white dwarf” star. A typical white dwarf is approximately the size of Earth, and its surfacetemperature is about 2.5×10 3K. A typical red giant has a surface temperature of 3.0×104 K and a radius ~100,000 times larger than that of a white dwarf.a) What is the average radiated power per unit area by each of these types of stars?b) What is the ratio of total power radiated from the white dwarf over the power of the red giantDisintegration. NUCLEAR PHYSICS. Explain what it's being used. It has been found that a sample of uranium oxide (U308), freshly prepared from an ore of uranium, emits 20.5 a particles per mg per second. If we have A238 = 4.8 × 10¬185-1, is it possible to have a 1mg sample?