Numerade

Questions asked

BEST MATCH

Would the following pairs of liquids be miscible or immiscible? a. carbon tetrachloride, NH3 and CCl4 [ Select ] ["miscible", "immiscible"] b. carbon tetrafluoride, CS2, and C7H16 [ Select ] ["miscible", "immiscible"] c. Hexane and methanol, CH3OH. [ Select ] ["miscible", "immiscible"]

View Answer

BEST MATCH

Question 8 (1 point) Saved When entrepreneurs start a business, they risk losing: Question 8 options: a) Time, but little money b) Time and money c) Borrowed money d) Money, but little time

View Answer

BEST MATCH

contain just two columns, one fori=/+ 1/ 2 and one for j= 1-

View Answer

BEST MATCH

5. Please label the direction of the drift and diffusion (electrical) currents for both electrons and holes, given their carrier concentration distribution profiles and the applied electric field marked in the figure. (10%) n(x)-(c Electron Concentration np(x) Hole Concentration Electric Field 6. Consider the following equilibrium band diagram with the Fermi level for a semiconductor sample, sketch the electron and hole concentration profiles and the direction of the built-in electric field (20%) EF Ec Ev 7. A Si sample doped with donor N=10^{14}cm?³. Please find equilibrium carrier concentration $n_0$ and $p_0$, and draw the energy band diagram with the Fermi level calculated and labeled. At a non-equilibrium steady-state condition, a light source generates 10^{19} EHP/cm³ per second, and the electron and hole carrier lifetimes both being 2µs. Please find the steady state excess carrier concentration $\delta n$, the total electron concentration $n$, the total hole concentration $p$, and calculate the electron and hole quasi-Fermi levels and label them in the energy band diagram. (30%)

View Answer

BEST MATCH

Find the exact value of each of the following under the given conditions below. $\tan \alpha = -\frac{4}{3}, \frac{\pi}{2} < \alpha < \pi; \cos \beta = \frac{1}{2}, 0 < \beta < \frac{\pi}{2}$ (a) $\sin (\alpha + \beta)$ (b) $\cos (\alpha + \beta)$ (c) $\sin (\alpha - \beta)$ (d) $\tan (\alpha - \beta)$ (a) $\sin (\alpha + \beta) = $ (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)

View Answer

BEST MATCH

Apply DFS to find the shortest path from S to one of the goals (G1 or G2) * S 8 4 5 C 4 D 5 A 12 1 10 B 4 G? 2 2 6 7 P 10 E 9 F 2 4 Goal State Start State 2 Heuristic estimate Step cost 16 8 0 4 2 H J G2 SADHJG2 SABCDHG1 none of above

View Answer

BEST MATCH

A 6-meter-long, 4.25-meter-high tank contains 3-meter-deep water when not in motion and is open to the atmosphere through a vent in the middle. The tank is now accelerated to the right on a level surface at 2 m/s^2. Determine the maximum pressure in the tank relative to the atmospheric pressure. Take the density of water to be 1000 kg/m^3. Vent 1.25 meters Water tank 2 m/s^2 3 meters 6 meters

View Answer

BEST MATCH

1. [-/4 Points] DETAILS WANEFM7 5.2.006. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Solve the LP problem. If no optimal solution exists, indicate whether the feasible region is empty or the objective function is unbounded. HINT [See Example 1.] (Enter EMPTY if the region is empty. Enter UNBOUNDED if the function is unbounded.) Maximize $p = x - 2y$ subject to $x + 2y \le 5$ $x - 3y \le 0$ $8x - 4y \ge 0$ x \ge 0, y \ge 0$ $(x, y) = Need Help?

View Answer

BEST MATCH

Question 2: Calls to a technical support center arrive according to a Poisson process with rate 30 per hour. The time for a support person to serve one customer is exponentially distributed with a mean of 5 minutes. The support center has 3 technical staff to assist callers. What is the probability that a customer is able to immediately access a support staff, without being delayed on hold? (Assume that customers do not abandon their calls.)

View Answer

BEST MATCH

6. Write Python code to achieve the following tasks: a. calculate and print the number of minutes in a year. b. takes the radius of a sphere (a floating-point number) as input and then outputs the sphere's diameter, circumference, surface area, and volume. c. calculate the total amount of a meal purchased at a restaurant. The program should ask the user to enter the charge for the food, then calculate the amounts of an 18 percent tip and 7 percent sales tax. Display each of these amounts and the total.

View Answer

elizabeth t.