What is the relationship, if any, between changes in the rate of criminal offending and changes in the rate of imprisonment in America during the last decade? What is the reason for that relationship?

Part of Virchow's Triad are 1. Changes in the vessel 2. Changes in the pattern of blood flow 3. Changes in blood constituents. Please give a concrete example for each of the parts of Virchow's Triad. Be detailed please!

Temperature and Phase Changes In this exercise, you will make observations of the phase changes of water (H 2 O). You will measure temperature and create a heating curve to determine the melting point and boiling point of water. 1. Gather the 250-mL beaker, approximately 150 mL of crushed ice, a watch or timer, the thermometer, burner stand, burner fuel, and matches. Note: Large ice cubes may be crushed by placing them in a large plastic bag, placing the bag on a durable surface, and breaking the pieces apart with a hammer or other heavy object. 2. Fill the beaker to about the 150-mL line with crushed ice. 3. Place the thermometer in the center of the ice. Do not allow the thermometer to touch the sides or bottom of the beaker. 4. After holding the thermometer in the ice for about a minute, note the time and record temperature at 0 minutes in Data Table 2 of your Lab Report Assistant . Additionally, record your observations about the state of matter (solid, liquid, or gas) of the water in Data Table 2 . 5. Uncap the burner fuel, light the wick with a match or lighter, and place the fuel under the stand on a pie pan. Burner setup. Note that the flame is blue which is sometimes difficult to see. 6. Place the beaker on the burner stand. Keep holding the thermometer in the middle of the ice. 7. Start the timer and begin taking temperature and observation readings every minute, recording your findings in Data Table 2 . Note: It is important that you record both the temperature AND the state or states of matter present every minute throughout the experiment. 8. Gently stir the ice with the thermometer as it heats. www.HOLscience.com 13 ©Hands-On Labs, Inc. Experiment Liquids and Solids 9. Continue to stir the ice or water and record temperature and observations every minute until the water has boiled for 5 minutes . Do not allow the thermometer to rest on the glass of the beaker. 10. Extinguish the burner fuel by lightly placing its cap over the flame; do not tighten cap until the burner fuel container has fully cooled. 11. Thoroughly wash and rinse the equipment for future use. Questions: A. Using the temperature data recorded in Data Table 2 , create a heating curve. ● Plot time (minutes) on the x-axis (horizontal axis) and temperature (°C) on the y-axis (vertical axis). Connect the plotted points with a line. ● Label the heating curve to show each phase of matter (solid, solid + liquid, liquid, liquid + gas). ● Label the melting point and boiling point on the heating curve. Note: An example heating curve is given in Figure 6 of the Background B. Are there parts of the curve with positive slopes and parts that are flat (slope of zero)? What states of matter are present when the slope of the heating curve is positive and what states of matter are present when the slope is zero or close to zero? C. Describe the key characteristics for the three states of matter. D. Define the melting point. What was the observed melting point of water?

E. Define boiling point. What was the observed boiling point of water?

F. What happens to heat energy when it is not increasing the temperature of the substance in the beaker? Use your heating curve to explain your answer. G. Was temperature perfectly constant during your test while the water was melting and while it was boiling? Explain why or why not.

H. The published melting point of H 2 O is 0°C, and the published boiling point is 100°C. Why may you have found different values?

I. Use the following information to determine if the intermolecular forces of isopropyl alcohol are greater or weaker than the intermolecular forces of water. Explain your answer. The melting point of isopropyl alcohol (rubbing alcohol, C 3 H 8 O) is about -90 °C and the boiling point is about 82 °C

By considering the genotypes in a single generation (NOT changes in frequencies over time or changes from one generation to the next), how would you show that natural selection is occurring in the Near-Lethal Homozygote (near-lethal recessive) simulation (Hint: think about Hardy-Weinberg Equilibrium).

Consider a fluid flowing perpendicular and over a long cylindrical body and the free stream velocity described by equation U(x) = 2 U_inf sin (x/R) where R=D/2 is the radius of the cylinder.

For a laminar flow in the boundary layer, calculate the local friction factor and heat transfer coefficient as a function of x using momentum and energy integral equations, beginning at x=0 until separation occurs.

Determine the Nusselt number N_UD = hD/k, as a function of phi=x/R, for the Reynolds numbers of R_eD = 40,000 , 70,000, 10,000 and 140,000.

1. Solve the following below

A) Use the second derivative test to find all the local maxima, local minima and saddle points of f(x,y)=x^2 +xy+y^2 +y

B) Find the absolute minimum and maximum values of f (x, y) = x^2 + y^2 − 2x on the closed triangular region with vertices (2, 0), (0, 2) and (0, −2). [First find interior critical points, then critical points on the boundary, i.e. on each edge of the triangle. Finally, include the vertices of the triangle in the list of candidates.

Thermodynamics

The centrifugal compressor in a refrigeration system operating at steady state conditions, compresses adiabatically 0.1 lbm/s of saturated R-134a vapor at 0°F to 200 psia. Answer the following.

a. Create a schematic representation of your system and draw the boundary you would use to solve the questions in this problem.

b. Represent the process on a T-s diagram.

c. Calculate the minimum work required by this compressor, in hp. Note: the solution to this problem requires interpolations; use your textbook tables. You answer will also be evaluated on its accuracy.

Reacting chemicals are stored in a spherical stainless steel container of outer radius ro = 6 cm and of inner radius is 5 cm. The chemicals generate a uniform heat at a constant rate of ???? ̇ = 8 × 107 W m3 ⁄ . The outer surface of the container is maintained at a uniform temperature of 100 °C. Consider a steady one-dimensional heat transfer and

a. Write an appropriate form of heat conduction equation for the sphere.

b. Express the boundary conditions.

c. Obtain a relation for the variation of temperature by solving the differential equation.

d. Calculate the temperature at the center of the sphere.

A central receiver in a solar power plant absorbs a concentrated solar flux from heliostats. However, losses from free convection and radiation lowers the collection efficiency. Consider a receiver with a diameter of 7 m and a height of 12 m that has an emissivity of 0.25 and a surface temperature of 800 K. If the solar flux is 100,000 W/m2, find the collection efficiency. The ambient air and surroundings are at a temperature of 300 K. Assume the curvature of cylinder has a negligible effect on boundary layer development and use the Churchill and Chu correlation to determine the Nusselt number.