Numerade

Questions asked

BEST MATCH

\frac{5 + 7i}{-1 + 5i}

BEST MATCH

In 2011 the U.S. population was 307 million with a growth rate of 0.7%.a. Write a model for population growth of the U.S. since 2011 (use zero for year 2011).b. According to the model, what will the population be in 2049?

View Answer

BEST MATCH

Questions 6 and 7: Let $\vec{u} = (2, -3, 4)$, $\vec{v} = (0, 6, 5)$, and $\vec{w} = (2, 1, -1)$. Write your answers in component form (i.e. like $(a, b, c)$) as appropriate. 6. Find a unit vector orthogonal to both $\vec{u}$ and $\vec{v}$. 7. Calculate $\vec{u} \cdot (\vec{v} \times \vec{w})$.

View Answer

BEST MATCH

lim x→∞ ln(3x + 5) /(ln(7x + 3) + 1)

View Answer

BEST MATCH

Please explain the theory behind and provide step-by-step work to achieve the final answer, thank you. The Carnot cycle operates cyclically, just like any heat engine. The Carnot cycle includes four reversible steps: two isothermal processes and two adiabatic ones. If the Carnot cycle is reversed, a Carnot refrigerator is created. This theoretical device has the highest coefficient of performance among all refrigerators operating between given inside and outside temperatures. Throughout this problem, we will use the following symbols: Q, the positive amount of heat delivered to the outside during one cycle or during some time specified in the problem; Q, the positive amount of heat absorbed from the inside during one cycle or during some time specified in the problem; W, the amount of work input during one cycle or during some time specified in the problem; T, the absolute temperature of the outside; and T, the absolute temperature of the inside. Part A What is the coefficient of performance, COP, of the Carnot refrigerator? View Available Hint(s) COP = Q / W COP = T / (T - T) Part B Imagine an ideal Carnot refrigerator that keeps helium in its liquid state, at a temperature of about 4.00 K. The refrigerator, with the helium container inside, is in a laboratory where the temperature is about 294 K. Because of the imperfection of the insulation, 2.00 J of heat is absorbed by the refrigerator to maintain a temperature of 4.00 K inside for one hour? Magnificent figures View Available Hint(s) - 1.98 Incorrect; Try Again; 6 attempts remaining

View Answer

BEST MATCH

1. Recognize a Note: Build a small game where the user must press a push button at the right moment to get the most points. The "right moment" is defined as when a certain note (you choose it) is played in a melody. You can reuse the code you used for a previous lab to play the melody. After the button has been pressed, you should display how accurately the user was (close to the right time) using a set of 5 LEDs. If the button was pressed between plus or minus 0.1 seconds of the correct time, 5 LEDs are lit, if the button was pressed between 0.1 and 0.2 seconds (plus or minus) of the correct time, 4 LEDs are lit, etc., until no LEDs are lit if the error is too large. After displaying the accuracy, the program should wait 5 seconds and restart itself. 2. Fast Button Press - Build a program that counts how many times a button is pressed in 5 seconds. The program should initially wait 3 seconds, turn on an LED to indicate the beginning of a 5 second period, count how many times a button is pressed during 5 seconds (no need to debounce, bounces can actually increase the number of presses), turn off the LED, then display the count on the serial monitor. The program should store the last 5 results and display the last 5 results on the serial monitor when a second button is pressed. The result of the most current trial should always be displayed in chronological order with the most current trial being displayed first.

View Answer

BEST MATCH

The Helicity operator is given by $h = \frac{\vec{S} \cdot \vec{P}}{p}$. Show that Helicity is conserved in the Dirac equation.

View Answer

BEST MATCH

The Finishing Department of Cortez Company has the following production and cost data for July: \begin{itemize} \item Transferred out, 8,000 units. \item Ending work in process, 2,000 units that are 40\% completed at July 31. \item Materials added, \$15,000; conversion costs incurred, \$26,400. \end{itemize} Materials are entered at the beginning of the process. Conversion costs are incurred uniformly during the process. Compute for the following: 1. Equivalent units of production for materials for the month of July 2. Equivalent units of production for conversion costs for the month of July 3. Unit cost for materials in the finishing department 4. Unit cost for conversion costs in the finishing department 5. Total unit cost in the finishing department 6. Total cost of units transferred out 7. Total cost of units in work in process ending inventory (3pts.) 8. Total cost as accounted for (5pts.)

View Answer

BEST MATCH

3. Corporate and Personal Taxes (20 points) a) An investor considers whether to invest in debt or equity of Kyle Corporation. Since he already has to pay a high personal tax rate, he does not want to pay more taxes than necessary. Therefore, he weights the pros and cons of investing in bonds or equities in the local financial markets. The personal tax rate on interest income is 50%, the corporate tax rate is 30% and the tax rate on dividends is 20%. Which strategy do you recommend the investor based on your calculations? (10 points) b) Kyle Corporation wants to assess the value of interest savings due to the tax deductibility of interest on debt. The corporate tax rate is given above. The total debt stands at $ 6 million and the return on debt is 6%. Assuming that the current level of debt is permanent, calculate the annual interest payment due before/after tax and the present value of the perpetual tax shield. Explain in what situations a tax shield might be less relevant and/or even misleading. (10 points)

View Answer

BEST MATCH

Two particles of masses $m_1$ and $m_2$ separated by a horizontal distance D are let go from the same height h at different times. Particle 1 starts at $t = 0$, and particle 2 is let go at $t = T$. Find the vertical position of the center of mass at a time before the first particle strikes the ground. Assume no air resistance. (Enter your answer as a function of time. Assume the $+y$-axis points straight up with $y = 0$ at the ground. Use any variable or symbol stated above along with the following as necessary: $g$.)

View Answer

lisa b.