Numerade

Questions asked

BEST MATCH

Trauma is being viewed as contributing to many (if not all) major mental health struggles. Use course materials to define what trauma is here. Then explain why or why not genetic (or biological) predisposition are important to treating and understand trauma-based disorders.

View Answer

BEST MATCH

3.) In a railroad "classification yard", rail cars are sent down "humps", and a "retarder" slows the cars down to the proper speed for it to connect with other cars. The rail car has a mass of m and an initial speed of $v_o$ at the top of the hump. The height of the hump is h and the retarder has a length of L. $v_o$ h retarder L $v_f$ a.) Retarders are known for being extremely loud, requiring sound protection for anyone nearby. The lost mechanical energy is all converted to sound energy and heat. How much energy became sound energy and heat? Use the given variables in your answer (m, $v_o$, $v_f$, h, g, L). b.) The desired final speed of the car is $v_f$ In terms of the given quantities (m, $v_o$, $v_f$, h, g, L), what is the average force F that the retarder must exert on the car's wheels.

View Answer

BEST MATCH

ODIRECTIONS: IN THIS MIND MAP ACTIVITY, YOU NEED TO BRANCH THE BENEFITS OF ICT IN DIFFERENT SECTORS OF THE GOVERNMENT. YOU MAY ADD MORE BRANCHES FOR THE SUB-TOPIC IF REQUIRED. WRITE A SHORT DESCRIPTION OF THE IMPACT AT THE END OF ITS STEM.

View Answer

BEST MATCH

I need help trying to solve this problem. Thank you! 1. Consider the estimator for that we derived in class: E xiyi-yZxi 61 Ex2-xExi (1) Show that the above is equivalent to Eq.(2) below E(yi -y)(xi -x) = E(xi-x)2 (2) In order to do this, expand out Eq.(2) and show that you can obtain an expression equivalent to Eq.(1) therefrom.

View Answer

BEST MATCH

Test the hypothesis using the P-value approach. Be sure to verify the requirements of the test. Ho: p=0.77 versus H?: p?0.77 n=500, x=380, ? = 0.01 Is npo (1-Po) ?10? Select the correct choice below and fill in the answer box to complete your choice. (Type an integer or a decimal. Do not round.) A. No, because npo (1-Po) = B. Yes, because npo (1-Po) = 88.55. Now find p. p= (Type an integer or a decimal. Do not round.) Find the test statistic zo. Zo= (Round to two decimal places as needed.) Find the P-value. P-value = (Round to three decimal places as needed.) State the conclusion of the hypothesis test. because the P-value is than ?

View Answer

BEST MATCH

The synthesis below is the best method and only approved method (for this class) to synthesize methylbenzene from benzene. There are 2 synthesis steps, which must be done in the order, i.e. Step #1, then Step #2, to obtain the desired product. Match the synthesis steps with the corresponding reagent(s) in each step to show the correct order of the reactions. Step #1 Step #2 Problem viewing the image, Click Preview Here Step #1 Step #2 Question 10 [Choose] [Choose] [Choose] CH3CI/AICl3 Zn(Hg), HCl, H2O NaBH4 CO/HCl, AlCl3 CH3

View Answer

BEST MATCH

A country's Central Bank engages in tight or contractionary monetary policy as a means to: a) Fight inflation. b) Alleviate the economy of a recession. c) Check and balance fiscal policy. d) Enhance foreign trade. e) Control the stock market.

View Answer

BEST MATCH

A binary system of chemical A (1) and chemical B (2) consists of vapor and liquid phases in equilibrium at 343.15 K. The saturated vapor pressure of chemical A and Chemical B are 79.8 kPa and 40.50 kPa respectively. The following equations provide a reasonable correlation for the activity coefficients: $\ln y_1 = Ax_2^2$; $\ln y_2 = Ax_1^2$ where; A = 0.95 Assuming the validity of modified Raoult's Law, (i) Construct a P-$x_1$-$y_1$ curves at a pressure of 343.15K. (ii) From Q1(i) above, Find BUBL P, if the liquid phase mole fraction for chemical B is 0.25 and T = 343.15 K. (iii) From Q1(i) above, Find DEW P if the vapor phase mole fraction for chemical B is 0.65 and T = 343.15K. (iii) Prove that, at T = 343.15K, azeotrope exist in the system.

View Answer

BEST MATCH

Q. Fuel cell uses a overall reaction of H2+0.5O2$\rightarrow$H2O(g). (g:gas) (1) What is the Gibbs free energy difference at the temperature 500K. (3-1) (2) Calculate the cell potential (V). (3-2) Q. Single fuel cell, whose size is 20cm x 20cm x 3mm, show the Voltage-current density relation show in the figure. Conditions 0.6V and 2000mA/cm² are used. (1) Single fuel cell output is (3-3) kW. (1) whole fuel cell that power is 84 kW needs many single fuel cells. Volume of the whole fuel cell is (3-4) liter.

View Answer

BEST MATCH

1. Wave equation and Galilean transformation (1pt) In vacuum, the wave equation for a wave that propagates along the $x$ direction is given by $ \left( \frac{1}{c^2} \frac{\partial^2}{\partial t^2} - \frac{\partial^2}{\partial x^2} \right) \vec{E}(x, t) = 0 $ (1) By considering the Galilean transformation of $\frac{\partial^2}{\partial t^2}$ and $\frac{\partial^2}{\partial x^2}$, show that the wave equation is neither covariant nor invariant under the Galilean transformation.

View Answer

brianna e.