The current of a beam of electrons, each with a speed of 908 m/s, is 7.15 mA. At one point along its path, the beam encounters a potential step of height -1.28 μV. What is the current on the other side of the step boundary?

The student academic group on a college campus claims that freshman students study at least 2.5 hours per day, on average. One Introduction to Statistics class was skeptical. The class took a random sample of 30 freshman students and found a mean study time of 137 minutes with a standard deviation of 45 minutes. At α = 0.01 level, is the student academic group’s claim correct? Calculate the p-value.

a. What is N-S equations for incompressible flows in cartesian coordinates in long form (in x,y,z coordinates)?

b. What is continuity equation and N-S equations for incompressible flows in polar coordinates in long form (in r,θ,z)

c. What is N-S equations in x direction for Planar Couette- Pouseille flow and derive an equation for velocity variation using boundary layer conditions

d. Assume an incompressible, steady, axissymmetric, fully developed Pouseille flow in a cylindrical pipe (infinitesimally long in z direction). The flow is in z direction, and radial and tangetial velocity is zero. Derive and simplify the N-S equation in z direction to find out the velocity in z direction. (need to use the boundary conditions to solve for integration constants)

X values and probabilities

1. Given μ_X = 750, σ_X = 100

        a) find the p(X < 970)

        b) find the p(X > 724)

        c) find the p(617 < X < 980)

        d) find X0 if p(X > X0) = .50

        e) find X0 if p(X < X0) = .0643

        f) find X0 if p(X > X0) = .4129

        g) find the 23^rd percentile of X

        h) find the two X values that are the boundary of the middle 86%, i.e. p(X0 < X < X1) = .86 and X0 and X1 are the same number of SD's away from the mean.

        i) find the two X values that are the boundary of the middle 36%, i.e. p(X0 < X < X1) = .36 and X0 and X1 are the same number of SD's away from the mean.

Consider a black body of surface area 20.0 cm^2 and temperature

5 000 K. (a) How much power does it radiate?

(b) At what wavelength does it radiate most intensely?

Find the spectral power per wavelength interval at

(c) this wavelength and at wavelengths of (d) 1.00 nm

(an x- or gamma ray), (e) 5.00 nm (ultraviolet light

or an x-ray), (f) 400 nm (at the boundary between

UV and visible light), (g) 700 nm (at the boundary

between visible and infrared light), (h) 1.00 mm

(infrared light or a microwave), and (i) 10.0 cm (a

microwave or radio wave). ( j) Approximately how much

power does the object radiate as visible light?

PLEASE answer all parts!

The flat iceberg drifts over the ocean, as it is driven by the wind that blow over the top. The iceberg may be modeled as a block of frozen fresh water at 0 oC. The temperature of surrounding sea water is 10 oC, and the relative velocity between it and iceberg is 10 cm/s. The length of iceberg in the direction of drift is L=100 m. The relative motion between the sea water and the flat bottom of the iceberg produce a boundary layer of length L. The 10 oC temperature difference across this boundary layer drives a certain heat flux into the bottom surface of the iceberg. This heating effect causes the steady erosion (thinning) of the flat piece of ice. If H(t) is the instantaneous high of the ice slab, calculate the ice melting rate dH/dt average over the swept length of the iceberg.

The field of nursing has changed over time. In a 750‐1,000 word paper, discuss nursing practice today by addressing the following:

1. Explain how nursing practice has changed over time and how this evolution has changed the scope of practice and the approach to treating the individual.
2. Compare and contrast the differentiated practice competencies between an associate and baccalaureate education in nursing. Explain how scope of practice changes between an associate and baccalaureate nurse.
3. Identify a patient care situation and describe how nursing care, or approaches to decision‐making, differ between the BSN‐prepared nurse and the ADN nurse.
4. Discuss the significance of applying evidence‐based practice to nursing care and explain how the academic preparation of the RN‐BSN nurse supports its application.
5. Discuss how nurses today communicate and collaborate with interdisciplinary teams and how this supports safer and more effective patient outcomes.

1. In May 2004, a Gallup Poll of adults’ attitudes toward Health Maintenance Organizations (HMOs) found that 40% of adults had little or no confidence in HMOs, 39% had some confidence, 18% had a great deal of confidence, and 3% had no opinion (USA Today, June 22, 2004). The letters L, S, G, and N will be used to denote these percentages. A recent random sample of 500 adults gave the following distribution of responses.

   L         S     G N

212 198   82 8 Total 500

Perform a Chi Square test using the .01 significance to test the hypothesis (Ho): The current distribution of adults’ attitudes toward HMOs is the same as that of 2004.

a. Find the Critical value (table Value) for Chi square

b. Calculate the Chi Square test statistic for the sample

c. Do you reject or not reject the Ho (Explain what your answer means)

The frequency distribution below shows the number of children in families at a church in Tucson.

The median number of children in a family is: ______________________

Discuss the disclosure issues addressed by Section 404 of the Sarbanes–Oxley Act of 2002. Please cite FASC ASC