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- 2023 Leadership & Career Certific x W Cal 3 - Chapter 13 Homework - MX Sy integral from 0 to 2 of x+1/6 x^3 × ✰ usb06ca.theexpertta.com/Common/TakeTutorialAssignment.aspx 9°C Partly sunny EXPERT ta Assignment Status Click here for detailed view Problem Status 1 Partial 2 Partial 3 4 Completed 5 Completed 6 Completed Class Management | Help HW-3_ Centripetal Motion & Newton's Laws of Motion Begin Date: 2/14/2023 12:01:00 AM -- Due Date: 2/26/2023 11:59:00 PM End Date: 2/28/2023 11:59:00 PM ✓ 25% Part (a) What is the x component of the acceleration in m/s²? a=-14.4 ax. = -14.40 ✓ Correct! ta The Expert TA | Human-like Gradi x y (17%) Problem 2: The diagram shows the all of the forces acting on a body of mass 2.8 kg. The three forces have magnitudes F₁ = 57.7 N, F₂ = 22.5 N, and F3 = 68.3 N, with directions as indicted in the diagram, where 0 = 50.8 degrees and p = 22.2 degrees. The dashed lines are parallel to the x and y axes. At t = 0, the body is moving at a speed of 5.77 m/s in the…1. An object can acquire an electrical charge by *a) radiation, convection, or friction.b) induction, convection, or radiation.c) contact, induction, or convection.d) friction, contact, or induction.e) contact, friction, or convection. 2. Liquids ____ their volume with higher temperature due to____. *a) increase; decreased crystal structureb) increase; less molecular motionc) decrease; greater molecular motiond) decrease; less molecular motione) increase; greater molecular motionPlease answer and explain to these in not less than 3 sentences. Thank you! 1. How can a sheet of copper be made to emit electrons thermionically? 2. Why do electrons cross the gap in a vacuum tube? 3. Besides tungsten, what other materials are used for cathodes in vacuum tubes? 4. What is the advantage of directly heated cathodes?
- 1. What is the volume of a tank that can hold 18 754 Kg of methanol whose density is 0.788g/cm³? Answer in kg/cm³ Answer in g/cm³ What is the correct significant figures i. ii. iii. 2. Choose if it's carbon, nitrogen or silicon. i. iii. iv. V. Which is the largest ionization energy? Carbon, nitrogen or Silicon? Which is the largest atomic size? Carbon, nitrogen or Silicon? Which is the least electron affinity? Carbon, nitrogen or Silicon? Which is the smallest electronegativity? Carbon, nitrogen or Silicon? Which is the most non-metallic element? Carbon, nitrogen or Silicon?1. How much energy is required to heat 7.5 kg of ice from -30 oC to steam at 200 oC? Full and detailed solution. 2. A simple pendulum has a period of 1.0 s here on earth. What will be its period when taken to the moon, where the acceleration due to gravity is 1/6 that of earth?What is critical temperature Tc ? Do all materials have a critical temperature? Explain why or why not.
- 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.13. In differential form, we have Êu -h' a kx? Calculate [p,H] any way that is easiest for you! + 2m дх? 22. A sample of rubidium gas of volume 1 × 10-8 cm³ is cooled until it forms a Bose-Einstein condensate. At a temperature of 250 nK, half of the rubidium atoms are in the condensate. (a) Calculate the number of rubidium atoms in the sample. (b) Describe the apparatus that can be used to create this Bose-Einstein condensate.
- 3. Kittel, Ch4-7. Free energy of photon gas. (a) Show that the partition function of a photon gas is given by z = II n II [1-exp(-ħw/T)]¯'. where the product is over the modes n. (b) The Helmholtz free energy is found directly from (53) as F = T log[1-exp(-ħw, /T)]. F = 71 Transform of the sum to an integral; integrate by parts to find T² VT 3 3 45ħ³c³ (53) (54) (55)Q3. What is the distinction between electronic and ionic conduction?Q5 // Answer three branches: A-Draw [313] and (101) B- Calculate the number of atoms / unit area for (111), (110), (100) for the BCC crystal. Derive in terms of a C- Explain that sulfur has covalent bonds? With drawing? D-vanadium V has an atomic radius of 0.132nm and a density of 6.1g / cm. Does it have a FC C crystal structure or BC C? 50Cteatmat A