You are studying a plant that requires a period of cold treatment before it will flower. You subject a plant to cold treatment, return it to temperatures favorable for growth, and then compare the chromatin state of the DNA taken from:

(1) meristem cells from a shoot that originated before the cold treatment;

(2) meristem cells from a shoot that developed after the cold treatment;

(3) ovule egg cells from a flower on stem 1;

(4) seeds from a flower on stem 2.

You find that the chromatin states are the same within but differ between which two groups?

1. Two manned satellites approaching one another, at a relative speed of 0.250 m/s, intending to dock. The first has a mass of 4.0010³ kg , and the second a mass of 7.5010³ kg .

a) Consider the frame of reference in which the first satellite was originally at rest. Determine the momentum of the satellites before docking.

2. Determine the Kinetic energy of the satellites before docking.

3. Using conservation of momentum determine the velocity of the satellites after docking.

4. Determine the final Kinetic energy of the system.

5. What is the loss of kinetic energy in this inelastic collision (docking process)?

6. Repeat the calculation by using the frame of reference in which the second satellite was originally at rest. Explain why the change in velocity is different in the two frames, whereas the change in kinetic energy is the same in both.

Thorpe and Company is currently an​ all-equity firm. It has three million shares selling for ​$32 per share. Its beta is 0.8​, and the current​ risk-free rate is 2.1​%. The expected return on the market for the coming year is 9.1​%. Thorpe will sell corporate bonds for ​$32,000,000 and retire common stock with the proceeds. The bonds are​ twenty-year semiannual bonds with a 9.4​%coupon rate and ​$1,000 par value. The bonds are currently selling for ​$893.61 per bond. When the bonds are​ sold, the beta of the company will increase to 1.3 What was the WACC of Thorpe and Company before the bond​ sale? What is the adjusted WACC of Thorpe and Company after the bond sale if the corporate tax rate is 15%​? Hint​: The weight of equity before selling the bond is​ 100%.

Newton's Law of Cooling tells us that the rate of change of the temperature of an object is proportional to the temperature difference between the object and its surroundings. This can be modeled by the differential equation d T d t = k ( T − A ) , where T is the temperature of the object after t units of time have passed, A is the ambient temperature of the object's surroundings, and k is a constant of proportionality. Suppose that a cup of coffee begins at 188 degrees and, after sitting in room temperature of 65 degrees for 16 minutes, the coffee reaches 181 degrees. How long will it take before the coffee reaches 168 degrees? Include at least 2 decimal places in your answer.

A target in a shooting gallery consists of a vertical square wooden board, 0.230 mm on a side and with mass 0.740 kgkg , that pivots on a horizontal axis along its top edge. The board is struck face-on at its center by a bullet with mass 1.80 gg that is traveling at 330 m/sm/s and that remains embedded in the board.

A) What is the angular speed of the board just after the bullet's impact?

B)What maximum height above the equilibrium position does the center of the board reach before starting to swing down again?

C) What minimum bullet speed would be required for the board to swing all the way over after impact?

Tank Ltd is considering undertaking the purchase of a new piece of equipment that is expected to increase pre-tax income(EBITDA) by $7,000 each year for the next 5 years. It costs $25,000 to purchase today and for tax purposes must be depreciated down zero over its 8 year useful life using the straight-line method. If Tank is actually forecasting a salvage (for capital budgeting purposes) of $8,000 after 5 years, what is the machine's net cash flow (after tax) for year 5? Assume the tax rate is 30%. NB: EBITDA is "Earnings Before Interest, Taxes, Depreciation and Amortisation"

$25,000

$14,250

$11,438

$13,838

You are a consultant to a large manufacturing corporation considering a project with the following net after-tax cash flows (in millions of dollars):

The project's beta is 1.8. Assuming r_f = 4% and E(r_M) = 14%

a. What is the net present value of the project? (Do not round intermediate calculations. Enter your answer in millions rounded to 2 decimal places.)

b. What is the highest possible beta estimate for the project before its NPV becomes negative? (Do not round intermediate calculations. Round your answer to 2 decimal places.)

On June 30, Sharper Corporation’s stockholders' equity section of its balance sheet appears as follows before any stock dividend or split. Sharper declares and immediately distributes a 50% stock dividend.

Exercise 13-6 Large stock dividend LO P2

Required:
(1) Prepare the updated stockholders' equity section after the distribution is made.
(2) Compute the number of shares outstanding after the distribution is made.

A researcher would like to evaluate the effectiveness of a pain-relief patch designed for lower back pain. Prior to testing the patch, each of n = 4 patients rates the current level of back pain on a scale from 1 to 8. After wearing the patch for 90 minutes, a second pain rating is recorded. The data are as follows.

​

                                                Before        After

                                          __________________

                   G = 36                  6          2

                  G² = 784                6          2

                ΣX² = 192                4          4

                                                8          4

                                         ______________________

                                            T = 24   T = 12

                                          SS = 8    SS = 4

Perform a Repeated Measures ANOVA and then analyze the data with a repeated measures t-test. Use the .05 level of significance for both.