1. The average yield on marketable securities is 9 percent/year; the fixed cost of transaction is $50 per transaction. The past cash balance study indicates that the firm's standard deviation of daily cash balance changes is equal to $800. The firm sees no reason why this variability should change in the future. The firm does maintain $1,000 in its demand deposits account at all times.

1. What is the optimal cash return point?
2. What is the upper cash balance?
3. Explain how the model will work?

A parallel plate capacitor filled with air is connected to a battery. A dielectric material of dielectrical constant is K=4 is added between the two plates while the capacitor remains connected to the battery. Determine how the following five quantities are affected by the insertion of the dielectric

a) capacitance

b) voltage across the capacitor's plates

c) charge on the plates of the capacitor

d) energy stored in the capacitor.

If a quantity changes specifiy whether it increases or decreases and bby what factor. Justify and show all work. Thank you.

1. What sort of health issues would you expect are common among care managers?
2. What immediate measures might be taken to relieve the stress and health issues from which the care managers suffer?
3. Management is considering fundamental changes to the role of the care managers, their goals, compensation, and their work environment? Should the care managers be involved in such discussions? What suggestions would you make?
4. Can you identify other jobs that have similar working conditions and issues?

1. What is microevolution?

2. Explain through the process of microevolution how natural selection produces adaptations while other evolutionary forces (specifically genetic drift, migration/gene flow, and non-random mating) may produce random evolutionary changes within populations.

3. Explain why evolution is a population-level phenomenon. Why does population size affect some evolutionary mechanisms, but not other(s)?

Will give a thumbs up for a good answer. Please help me!

a. Two point charges each of magnitude +5.010-9 C are placed 8.0 cm apart in air. Calculate, i. the electric potential, and ii. the electric field strength at a point, P which is 5.0 cm away from each charge. b. An electron of charge 1.610-19 C moves from a point midway between the charges and on the line joining them, to point P. i. Calculate the work done. ii. Discuss the energy changes in the process

In a closed-market economy with unionized labor, suppose unions suddenly get a significant negotiation power on labor contracts at time t∗ and thereby enforced a real wage rate that is 10 percent higher than the market-clearing real wage rate. What would be the effect of this on unemployment, rental rate of capital, real interest rate in long run and very-long run? What would be the effect of using expansionary fiscal policy against this? Explain in detail by showing the changes in the relevant markets.

Define the profit function of the private insurer in the line of health insurance. That is, what are the revenues and costs of the insurance firm? Based on your definition, analyze the effects of the following exogenous changes on the insurer's profit: a.) an increase in insurance rate; b.) an increase in the insurer's share price in the stock market; c.) a general increase in health care expenditures; d.) an increase in population size; e.) an increase in the country's unemployment rate; f.) a shift of the payment system from fee-for-service to capitation.

SL is faced with a decline in demand due to the downsizing of its major customer. LR, the company's controller, is considering a number of changes which may affect the company's profitability.

Explain how SL's break-even point would change if:
-The selling price per unit decrease.
-Fixed costs increased throughout the entire range of activity.
-Sales people were now compensated on 75% commission and 25% salary and opposed to 75% salary and 25% commission as they were prior.

1) Annie says "you can't run a linear system on a finite planet indefinitely." Another way to say this is you can't have unlimited economic growth with limited resources. What does this mean and what does it mean for the future?

2) What changes are needed to ensure that our way of life supports rather than undermines the planet's biological systems on which we depend? (Use in your response 2 of the following terms, externalizing costs, dioxins, perceived, or planned obsolescence.)