Questions asked
A table wine has a pH of 3.40. What is the hydronium ion concentration of the wine? $[H_3O^+]$ = M
obtain the equation of a sphere which passes through three points (1,0,0),(0,1,0)and (0,0,1) and has its radius as small as possible
What is the angular speed of the minute hand of a smoothly running analog watch? 1.23 \times 10^-2 rad/s 3.14 \times 10^-3 rad/sO 2.26 x101-3 rad/s 1.75 x10^-3 rad/s
If the equilibrium constant $K_c$ for the reaction below is 1.71 × 10$^{-1}$, what will be the equilibrium pressure of NO if the initial partial pressures of the three gases are all 1.86 × 10$^{-3}$ atm? $N_2(g) + O_2(g) \rightleftharpoons 2NO(g)$
6. Define the function $h_X(x)$ to be the hazard function of the continuous random variable X. Recall our notation for the probability distribution function and cumulative distribution function of X is $f(x)$ and $F(x)$, respectively. Given our recollection, the hazard function may be expressed in terms of both $f$ and $F$ in the formula $h_X(x) = \frac{f(x)}{1 - F(x)}$ 1. Verify by computation or citing the relevant rule in calculus that $h_X(x) = -\frac{d}{dx} \log(1 - F(x))$ 2. Suppose that $X \sim Weibull(\alpha, \beta)$, compute $h_X(x)$.
For a large sporting event, the broadcasters sold 56 ad slots for a total revenue of $132 million. What was the mean price per ad slot?
A healthcare provider's prescription reads morphine sulfate, 6 mg stat. What is the correct dose of medication ampule?
The beam cross section is subjected to an unsymmetric bending moment. Given $\sigma_{allow}$ determine the magnitude of the maximum bending moment. Find the orientation of the neutral axis. Draw a cross section showing the location of the neutral axis. Identify the portion of the cross section that is in tension and the portion of the cross section that is in compression. $\sigma_{allow} = 150 \text{ MPa}$ $\theta = 50^\circ$ $d = 85 \text{ mm}$ Ans: $M_{max} = 9.04 \text{ kN-m}$ $\alpha = -50^\circ$
Determine the voltage $v_o(t)$ for the circuit shown below: 12 cos 2t V $4i_x$ 10 ? +- 40 ? +- 2 V 10 ? $i_x$ 5 ? $v_o(t)$
The following model predicts the bulk specific weight in lbs/ft^3 of deposited sediment after t years of time have passed: Yb = Yb1 + B log(t), where Yb1 is the bulk specific weight 1 year after initial deposition. If a reservoir the size of Lake Miltona (capacity of 280,224 ac-ft) needs to be dredged after 10% of its volume is taken up by silt being deposited at a rate of 2.70*10^8 lbs/yr, how many years will pass before dredging must take place? Assume a specific gravity of the silt as 2.68, B = 5.7 lbs/ft^3, and the density of water as 62.4 lbs/ft^3.