7.   New Heights Aviation purchased on January 1, 2020 a plane for $ 500,000. The plane is expected to  

      have a 20 year life after which it can be sold for $ 100,000.

Required:

1. Compute depreciation expense for first three years using straight line.
2. Compute depreciation expense for the first three years using double-diminishing balance method.
3. At the end of three years the plane is sold for $400,000. Prepare journal entry to record the sale assuming depreciation was recorded using straight line.

6. Two skaters at rest, one of 120 kg and the second of 60 kg, push off against another. Which will gain the largest magnitude of momentum? A. Both skaters will gain momentum of the same magnitude B. Neither skaters will gain any momentum C. the 120-kg skater D. the 60-kg skater E. the momentum of each skater is conserved

7. Momentum changes for each of these scenarios except for A. a neutron in a nuclear reactor that changes the direction but not the magnitude of its velocity when it scatters off another neutron B. a falling rock from an instant after initial drop from a high tower until an instant before impact C. a block sliding at constant speed (with friction) down an inclined plane D. a movie stunt performer flying on a parabolic path before the performer stops on the ground E. a rocket sled on a horizontal track from an instant after the drag parachute opens until an instant before the sled comes to rest

a. Write the balanced equation in ACID solution for the reaction below:

Fe2++MnO-4→Fe3++Mn2+

b. To standardize a potassium permanganate solution (purple in appearance), a 0.250 g sample of FAS (iron II ammonium sulfate hexahydrate; molar mass = 342 g/mol) is dissolved in 25.00 mL distilled water, then acidified with sulfuric acid. The solution is then titrated with 35.00 mL potassium permanganate solution from a buret until a pale persistent purple color is attained. Calculate the molarity of the potassium permanganate solution.

c. What would be the effect, if any, on the value of the reported standard molarity of the potassium permanganate if the following errors were made? Explain each of your 3 answers.

1.Some drops of water remained in the buret after cleaning but before the permanganate solution was added to the buret.

2.The student neglected to run some permanganate solution through the tip of the buret before taking the initial reading.

3.The student’s lab partner spilled some FAS after weighing it but before titration.

The U.S. government has decided to decrease the corporate tax rate from 35% to 20% (for the record, I originally wrote this problem long before this actually happened). You have been tasked with re-estimating the remaining PV of a project’s cash flows. The project will operate for the next 4 years before shutting down. It will produce yearly revenue of $40k with yearly operating costs of $20k. The project utilizes some heavy machinery which has a current book value of $80k and is being depreciated on a straight-line basis by $15k per year for the remainder of the project. (IMPORTANT: This does not mean that you purchase the machine today for $80k. You bought the machine in the past when you started the project). The machinery will have a resell value of $30k at the completion of the project. The firm’s discount rate is 10%.

1. Show how much each of the project’s OCFs will change on a timeline once the tax rate is decreased.
2. Compute the after-tax salvage both before and after the tax change.

A political candidate wishes to determine if endorsing increased social spending is likely to decrease her popularity (α = .05). She has access to data on the popularity of several other candidates who have endorsed increased spending. The data were available both before and after the candidates announced their positions on the issue. The data are as follows:

Will we need a one- or two-tailed hypothesis test?

State your null hypothesis

State your alternative hypothesis

Provide the SPSS output for your test and identify (circle or highlight) the t-obtained and the p-value

Did you reject or fail to reject the null hypothesis?

What can you conclude?

Calculate the 95 confidence interval for the “Before” mean

Calculate Cohens D

E6.14 (LO 5) (Computation of Pension Liability) Nerwin, Inc. is a furniture manufacturing company with 50 employees. Recently, after a long negotiation with the local labor union, the company decided to initiate a pension plan as a part of its compensation plan. The plan will start on January 1, 2020. Each employee covered by the plan is entitled to a pension payment each year after retirement. As required by accounting standards, the controller of the company needs to report the pension obligation (liability). On the basis of a discussion with the supervisor of the Personnel Department and an actuary from an insurance company, the controller develops the following information related to the pension plan.

The interest rate to be used is 8%.

Instructions

On the basis of the information above, determine the present value of the pension obligation (liability).

Determine the pH change when 0.089 mol KOH is added to 1.00 L of a buffer solution that is 0.343 M in HCN and 0.386 M in CN-. pH after addition − pH before addition = pH change =

If your organization is going to apply for a grant, when do you think, if ever, it would be appropriate to make the application public? What would be the benefits and drawbacks of doing it before the application is submitted? What about after?

A. 100ml of 0.5M acetic avid is titration with 20ml of 0.5M KOH. What is the pH of the acid before titration? (ka acetic acid is 1.8 x 10^-5)

B. What is the pH of the solution after titration?

A trainer suggests the following nutrition for their athlete surrounding their training:

In the hour before training: water

During training: electrolyte drink with carbohydrate

After training: Carbohydrate and protein drink

Explain why the trainer would recommend this.