A square footing is supporting a single interior column with a dimension of 12 in × 12 in. The column carries axial loads as follows: 100 kip dead load and 80 kip live load. Use normal-weight concrete with ?? ′ = 3 ksi, ?? = 60 ksi, and ?? = 5 ksf. The distance from the bottom of the footing to final grade is 5 ft. The height of the footing is 36 in and the concrete cover is 3.5 in. Unit weight of the soil is 100 pcf and unit weight of concrete is 150 pcf.

a) Determine the dimension of the footing (in 1.0-ft increment) and check if the depth is adequate.

b) Design the flexural reinforcement of the footing.

c) Design the dowel reinforcement.

Insoluble PbBr2(s) precipitates when solutions of Pb(NO3)2(aq) and NaBr(aq) are mixed.

Pb(NO3)2(aq) + 2 NaBr(aq) → PbBr2(s) + 2 NaNO3(aq) ΔrH° = ?

To measure the enthalpy change, 200. mL of 0.75 M Pb(NO3)2(aq) and 200. mL of 1.5 M NaBr(aq) are mixed in a coffee-cup calorimeter. The temperature of the mixture rises by 2.44 °C. Calculate the enthalpy change for the precipitation of PbBr2(s), in kJ/mol. (Assume the density of the solution is 1.0 g/mL, and its specific heat capacity is 4.2 J/g ∙ K.)

(See Fluids in the News article titled “Modeling parachutes in a water tunnel”.) Flow characteristics for a 35-ft-diameter prototype parachute are to be determined by tests of a 1.0-ft-diameter model parachute in a water tunnel. Some data collected with the model parachute indicate a drag Fm = 22 lb when the water velocity is 4 ft/s.
(a) Find the predictor equation. Assume the drag to be a function of the velocity, V, the fluid density, ρ, and the parachute diameter, D. Note that model variables have subscripts m.

(b) Use the model data to predict the drag on the prototype parachute falling through air at 10 ft/s.

The single most important use of the element gold is for wires that join integrated circuits to the conducting pads that then connect microelectronic chips with external circuitry. A typical application uses gold wires 1.0 milmil (0.001 inch) in diameter and 60 milmil long. Although the current under normal conditions is much less, such a wire will fuse (that is, melt and interrupt the current) when the current exceeds some 550 mAmA.

Find the current density in the wire when this maximum current is flowing.

Find the electric field in the wire when this maximum current is flowing.

Find the voltage between the ends of the wire when this maximum current is flowing.

Suppose the income elasticity of demand for food is 0.5 and the price elasticity of demand is -1.0. Suppose a hypothetical group of people spend $10,000 a year on food, the price of food is $2, and that their total income is $25,000.

a. If a sales tax on food caused the price of food to increase to $2.50, what would happen to their consumption of food?

b. Suppose they will get a tax rebate of $2500 to ease the effect of the sales tax. What would the consumption of food be now?

c. Are they better or worse off when given a rebate equal to the sales tax payments? Explain.

Each part should be answered in 4 sentences thank you!

A pension fund manager is considering three mutual funds. The first is a stock fund, the second is a long-term government and corporate bond fund, and the third is a T-bill money market fund that yields a sure rate of 1.0%. The probability distributions of the risky funds are:

The correlation between the fund returns is 0.46.

What is the expected return and standard deviation for the minimum-variance portfolio of the two risky funds? (Do not round intermediate calculations. Round your answers to 2 decimal places.)

We live in a fast-changing world. We often hear that innovation is what’s needed to address the global challenges and local issues that we’re facing, to seize new and unexpected opportunities as they arise and to make our world a better place. Therefore, new invention derived from research developments, technical knowledge and tools independent of product and service initiatives. a. Compare disruptive and sustaining technologies. Support your answer with relevant examples. b. Explain how the Internet and WWW caused business disruption. c. Describe Web 1.0 along with ebusiness and its associated advantages. please type it do not handwritten . and not copy from chegg

(10 pts) The city of New York is considering two separate cell tower providers. The city expects a benefit-cost ratio of 1.0 or better, and their cost of capital is 10% per year. Assume repeatability. Verizon AT&T Initial investment (first cost) $90,000 $170,000 Useful life in years 6 12 Market value at end of useful life $25,000 $40,500 Annual benefits from operation $30,000 $40,000 Annual operating expenses $9,800 $11,300 a. Conduct benefit-cost ratio on the Verizon and AT&T projects and indicate which project is the preferred project. b. Conduct an incremental difference to validate decision.

In the transmission of infectious diseases, aerosolised droplets (from coughing and sneezing) are an important potential mode of transmission.

The size of droplets is critical, as the size dictates the rate at which droplets settle to surfaces under the action of gravity. You have been tasked with determining the settling rate (terminal velocity) of aerosolized droplets. The droplets may be assumed to be spherical, and have the properties of water (ρ=1000 kg/m3, μ=0.001 Pas). The droplets can be assumed to be settling in a quiescent atmosphere at standard temperature and pressure.

Determine the length of time droplets of the following sizes (at their terminal velocity) take to fall a distance of 1.0 m:

• 1μm

• 200μm

Company A is considering going public and is trying to determine its value based on its future dividend payments. Their current EPS is $5.00, and over the next 5 years they anticipate a payout ratio of 20% and ROE of 15%. During this high-growth period, their beta is estimated at 1.20, with a risk-free rate of 1.0% and a market risk premium of 5%. At the end of the 5-year high growth period, they estimate their stable beta will be 1.05, with ROE of 12% and growth of 2.0%. (Risk-free rate and market risk premium will remain the same.) Using this information, determine the per-share value for the company and show the calculation in details.