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Which of the following are true concerning the medication diazepam (choose all answers that apply) Schedule V Used to treat muscle spasms Used to treat somnolence Used to treat anxiety Used to treat neurosis

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1. A voltage regulator using a zener diode $D_z$ is shown in Figure 1. $D_z$ is specified to have a 15.3V drop at a test current of 30mA with an incremental resistance $r_z$=15Ω and knee current $I_{zk}$=1mA. (i) Draw the i-v curve for $D_z$. Label axes and all relevant points. Rs For no load and nominal supply: (ii) Find the value of the voltage $V_{OUT}$. [11] [13] (iii)Mark this operating point on the i-v curve of (i). A load resistance of $R_L$ of 5ΚΩ is added to the output. (iv) What will be the percentage change in $V_{OUT}$? [13] (v) Mark this operating point on the i-v curve in (i) A load resistance of $R_L$ of 1ΚΩ is added to the output. (vi) What will be the $V_{OUT}$ for this load? [13] (vii) Mark this operating point on the i-v curve in (i) V supply = 20 V Figure 1 500Ω $D_z$ $V_{OUT}$

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Some amount of ideal gas with internal energy U and initial temperature 1000C undergoes the isobaric expansion, so that its volume doubles.

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If the false acceptance rate is 2 then what is the size of the average attack space? 100 25 1 50

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Find the derivative of the function.\\ $\frac{5}{4}$ \\ s(t) = 49 (9t$^3$ - 8)$^{\frac{5}{4}}$ \\ s'(t) =

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1) A particular first-order reaction has a rate constant of 1.35\times 10^2 /s at 25.0$^\circ$C. What is the magnitude of $k$ at 75.0$^\circ$C if $E_a$ = 85.6 kJ/mol? 2) The decomposition of ozone, O$_3$, is believed to occur by a two-step mechanism: $\bullet$Write the equation for the overall reaction. $\bullet$Write the rate law for the overall reaction. step 1: O$_3 \rightarrow$ O$_2$ + O step 2: O$_3$ + O $\rightarrow$ 2O$_2$ Slow Fast 3) Write the equilibrium constant expression in terms of concentrations SO$_2$Cl$_2$(s) $\rightleftharpoons$ SO$_2$(g) + Cl$_2$(g)

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1) [10] Compute the value of the following limits using L'Hôpital's Rule: a) $\lim_{x \to 0} \frac{e^{4x} - 1 - 4x}{cos(2x) - 1} =$ b) $\lim_{x \to \infty} \frac{x^2}{e^{2x}} = $

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009 10.0 points You are given two waves, a transverse wave that moves to the right $f_1(x)$ and a transverse wave that moves to the left $f_2(x)$, on a string. As the problem begins, the wave $f_1(x)$ is mov- ing to the right at $v_1 = +1$ m/s and the wave $f_2(x)$ is moving to the left at $v_2 = -1$ m/s. Amplitude (centimeter) 3210123 -3 0 1 2 3 4 5 6 7 8 9 10 Distance (meter) What is the shape of the wave on the string after 3 s?

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Parallel plates Two large parallel plates are separated by $d = 5.0 mm$ as shown in the figure. The surface charge density on the oppositely charged plates are $\pm 2nC/m^2$.

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Q #4. The gas-phase reaction between butadiene and ethylene to form cyclohexene can be written as follows: C$_4$H$_6$ + C$_2$H$_4$ $\rightarrow$ C$_6$H$_{10}$ (A) (B) (C) Feed consisting of equimolar amounts of each reactant enters a tubular flow reactor at 1 atm and at 450°C. Determine the space time needed to convert 10% of the feed for (i) isothermal, and (ii) adiabatic operation. Write equations describing exact solution for each case. Use estimates where appropriate. Data: k = 10$^{7.5}$ exp (-27,500/RT) lit/mol-sec $\Delta$H$_r$ = -30,000 cal/mol C$_{p_A}$ = 36.8 cal/mol-C C$_{p_B}$ = 20.2 cal/mol-C C$_{p_C}$ = 59.5 cal/mol-C

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ryan c.