03 Question (1 point) question? It is worth 1 point/ You have unlimited attempts/There is no Calculate the value of K at 25°C for the reaction: 5Fe2+(aq) + MnO4(aq) + 8H+ (aq) 5Fe3+ (aq) + Mn2+(aq) + 4H₂O(1) Use the standard reduction potentials below to complete the calculation: MnO4(aq) +8H+ (aq) +5e¯ →→→ Mn²+ (aq) +4H₂O(1) E° = 1.507 V Fe2+ (aq) E° = 0.770 V Fe3+ (aq) +le 1st attempt K= See Period

MATCH THE ANSWER WITH THE QUESTION First law of thermodynamics Choose. Choose.. Second law of thermodynamics Introduces the concept of internal energy Introduces the concept of entropy Zeroth Law of Thermodynamics Give us the concept of temperature Inexact Differential Equation In a complete cycle of changes Change in internal energy is zero

Question 10 4 Points As shown in the figure. A plot of potential energy U versus position x of a 2 kg particle that can move along x-axis. The graph has these values U_A=9 J, U_C=20J and U_D=24 J. The particle is released at position x=5 m with kinetic energy 4 J where the potential energy is U_B=12J. What is the kinetic energy of the particle at x =3.5 m. Upt- ... Uc UAF 6 7 1 3 4 5 x (m) 8. 9. A 8J B) none of them c 7J D) 7.5)

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Each time your heart beats, your blood pres- sure first increases and then decreases as the heart rests between beats. The maximum and minimum blood pressures are called the systolic and diastolic pressures, respectively. Your blood pressure reading is written as systolic/diastolic. A reading of 120/80 is considered normal. A certain person's blood pressure is modeled by the function p(1) = 115 + 25 sin(16071) where p(t) is the pressure in mmHg (millimeters of mer- cury), at time t measured in minutes. Find the blood pressure reading. How does this compare to normal blood pressure?

The left side of this equation tells how much energy Q the cylinder gives to the water while it cools. The right side of this equation tells how much energy Q the water and aluminum cup absorb from the cylinder to warm up. Because it is the same energy, they are equal. What is known in this equation? Mcyl 411.7 g, malum 46.5 g, malum+water = 175 g Can you find: mwater =? g Twater = Talum = 20°C (water and cup of room temperature) 90°C, T; = 35°C (hot cylinder and cool "cylinder+cup+water" temperatures) Tcyl kCal Calum = 0.22, Cwater 1 (specific heat of water and aluminum, measured in units kg-°C What are we looking for is Ccul - How we find it? Plug all the numbers into the equation (1), Ccul will be one unknown which you can calculate from the equation. Important, convert all the masses from grams to kilograms! After you find Ccyl, compare it to known value for the copper 0.093(our cylinder is made out of copper). |Ceyl -0.093| % : · 100% 0.093

!! X Quiz No.1 x Quiz No.1 docs.google.com/forms/d/e/1FAlpQLSe-TSkiDw1mbMifeQk9X100r-vpYjBy Q5- B) for the figure below If X1-20, X2-D30, X3-22.5, X4=10, X5-D0, X6%-D15, X7-20 and Y1= 80, Y2=65, Y3%3D60, Y4=15, Y5-D10, Y6-Y7%3D0 all in cm. Find: 0knee, 0Ankle and OMT-PH * 43 es OAOUO

Q3: Consider evaluation of different temperatures of solar photovoltaic/thermal system (PVT) as shown in Figure 1(a). The following set of differential equations represent energy balance equations to be solve using matrices and eigenvalues using MATLAB: dTglass = -0.75Tgtass + 0.75TpvT (1) dt - 1.187glass – 22Tpyr + 23Twax (2) dt dTwax 12Tglass + 18TpyT – 19 Twax (3) dt Where, Tgtass , TPVT, and Twax, are temperatures illustrated in Figure 1(b). At time t-0 the initial conditions are Tglass = 35 , Tpyr = 33, and Twax = 31 °C. Cold suppty In frem water Tank Glass PVT Espann Nane-PCMPVT Collector Wax Tubes Sterg Tank Nanofluid Heat Exchanger Contalner Tepe Teek oe Pump for drain

= Knowledge Check: String in a Circle Please answer the following question(s): 1. Object of mass m tied at the end of a string of length R whirled around a circle. The tension in the string is T. How much work does T do on the object? V % Work done by T on m is Centripetal force Search 5 16 4- ^ 6 & ♫+ 7 R because, T acts along the radius and is to the velocity (instantaneous displacement) which is along the tangent. do work on the object during circular motion. 0 A 8 fg ।বব O f10 DII fm DDI f12 {1} T back

Q8): To find how much heat is required to bring a kettle of water to its boiling point, you are asked to calculate the specific heat of water at 61°C. The specific heat of water is given as a function of time in Table below. Temperature, T Specific heat, C₂ (°C) J kg-°C 22 42 52 82 100 4181 4179 4186 4199 4217 Determine the value of the specific heat at 7=61°C using the direct T method of interpolation and a third order polynomial. Find the absolute relative approximate error for the third order polynomial approximation (Lagrange Method).