Questions
Physical training can lead to changes in muscle composition and properties of local motor neurons, both...

Physical training can lead to changes in muscle composition and properties of local motor neurons, both of which will alter our capabilities to carry out movements. Are the following statements about that type of plasticity of our motor system TRUE or FALSE?

While riding a bike, maintaining posture to keep sitting on the saddle is carried out by slow motor units, while the legs use fast fatigable motor units, while working really hard to get up a short steep incline very fast.

Imagine you previously trained for lifting heavy weights and now train for running marathons, This leads to an increase in the excitability of the motor neurons, so that neurons start to become active with weaker stimulation.

Due to the decreased excitability of motor neurons after training for heavy lifting, the muscle fibers they activate become active already when the task is to lift very light objects.  

Unless your little pinky finger is trained to do heavy lifting, we can safely assume that the motor neurons that activate its muscles contact only very few muscle fibers.

A motor neuron that has a relatively short duration of hyperpolarization (overshoot) after an action potential is expected to be able to produce higher action potential firing frequencies and thus stronger contractions of muscle fibers.

A fast, large, strong, fast fatigable (FF) motor unit motor neuron that was trained to do heavy lifting has a very small axon diameter.

In: Anatomy and Physiology

Question 1: How sensitive to changes in water temperature are coral reefs? To find out, scientists...

Question 1:

How sensitive to changes in water temperature are coral reefs? To find out, scientists examined data on sea surface temperatures and coral growth per year at locations in the Red Sea. Here are the data: Sea surface temperature 29.69 29.86 29.95 30.3 30.51 30.68 30.87

Growth 2.63 2.57 2.62 2.47 2.27 2.37 2.27

Use your calculator to find: The mean (± 0.0001) and standard deviation (± 0.0001) for sea surface temperature: x¯¯¯= sx=

The mean (±0.0001) and standard deviation (± 0.0001) for coral growth: y¯¯¯= sy=

The correlation (± 0.0001) r = . The slope (± 0.01) of the equation of the least-squares regression line is b =

and the intercept is (± 0.01) a =

In: Statistics and Probability

Using the model of loanable funds explain how the following changes affect the real interest rate,...

Using the model of loanable funds explain how the following changes affect the real interest rate, investment, consumption, and government expenditure. Include the appropriate diagram as part of your answer. Initially assume that consumption depends only on disposable income.

A)Expectations about the future profitability of investment improve. (Hint: For a given real interest rate, r, firms will invest a greater amount after expectations improve).

B) How does your answer to (A) change if consumption also depends on the real interest rate (i.e. is decreasing with r)?

In: Economics

Taxes are costs, and, therefore, changes in tax rates can affect consumer prices, project lives, and...

Taxes are costs, and, therefore, changes in tax rates can affect consumer prices, project lives, and the value of existing firms. Evaluate the change in taxation on the valuation of the following project:

0 1 2 3
1.Initial Investment 100
2. Revenues 100 100 100
3. Cash operating costs 50 50 50
4. Tax depreciation 33.33 33.33 33.33
5. Income pretax 16.67 16.67 16.67
6. Tax at 40% 6.67 6.67 6.67
7. Net income 10 10 10
8. After-tax salvage 15
9. Cash flow (7+8+4-1) -100 43.33 43.33 58.33
NPV at 20%=0

Assumptions: Tax depreciation is straight-line over three years. Pre-tax salvage value is 25 in year 3 and 50 if the asset is scrapped in year 2. Tax on salvage value is 40% of the difference between salvage value and book value of the investment. The cost of capital is 20%.

  1. Please verify that the information given above yields NPV = 0.
  2. If you decide to terminate the project in year two (2) what would be the NPV of the project?
  3. Suppose that the government now changes tax depreciation to allow a 100% write-off in year one (1). How does this affect your answers to parts a and b above?
  4. Would it now make sense to terminate the project after two rather than three years?
  5. How would your answers change if the corporate income tax were abolished entirely?

In: Finance

Analyzing Operational Changes Operating results for department B of Delta Company during 2016 are as follows:...

Analyzing Operational Changes
Operating results for department B of Delta Company during 2016 are as follows:

Sales $550,000
Cost of goods sold 378,000
Gross profit 172,000
Direct expenses 120,000
Common expenses 66,000
Total expenses 186,000
Net loss $(14,000)

If department B could maintain the same physical volume of product sold while raising selling prices an average of 15% and making an additional advertising expenditure of $60,000, what would be the effect on the department's net income or net loss? (Ignore income tax in your calculations.)

Use a negative sign with your answer to indicate if the effect increases the company's net loss.

If Department B increased its selling price by 15%, the effect on net income (loss) would be $Answer

.

In: Accounting

1) A family’s ability to continue to function along established patterns of behavior despite stressful changes...

1)

A family’s ability to continue to function along established patterns of behavior despite stressful changes is

(1pts)

A. Resiliency

B. Elasticity

C. Buoyancy

D. Adaptability

2)

The ABC-X model of family stress focuses on the cause, the perception of the change, and

(1pts)

A. The nature of the family members involved

B. The severity of the stress

C. The family’s coping mechanisms

D. The number of family members involved

3)

At what age are women at the greatest risk for being victims of domestic violence?

(1pts)

A. 15-19

B. 20-24

C. 40-45

D. 70-74

4)

Social cognition theory of the effects of family violence on children holds that

(1pts)

A. Violent and abusive behavior is learned. Abusive children learn abusive behaviors from the abuser

B. A child’s interpretation of a certain situation may not be as hostile as he or she may perceive. Changing the children’s impressions may help children overcome the abusive situation

C. Different traits and coping mechanisms are passed from generation to generation within a family

D. How a negative event is handed depends on the extent of the trauma that a victim experiences.

5)

According to research, which of the following makes child-to-parent abuse more likely?

(1pts)

A. Parental leniency

B. Parental neglect

C. Exposure to violent video games

D. Parental demandingness

In: Psychology

Taxes are costs, and, therefore, changes in tax rates can affect consumer prices, project lives, and...

Taxes are costs, and, therefore, changes in tax rates can affect consumer prices, project lives, and the value of existing firms. Evaluate the change in taxation on the valuation of the following project:

0

1

2

3

1.Initial investment

100

2.revenues

100

100

100

3.cash operating costs

50

50

50

4.tax depreciation

33.33

33.33

33.33

5.income pretax

16.67

16.67

16.67

6.tax at 40%

6.67

6.67

6.67

7.net income

10

10

10

8. after -tax salvage

15

9. cash flow (7+8+4-1)

-100

43.33

43.33

58.33

NPV at 20%=0

Assumptions: Tax depreciation is straight-line over three years. Pre-tax salvage value is 25 in year 3 and 50 if the asset is scrapped in year 2. Tax on salvage value is 40% of the difference between salvage value and book value of the investment. The cost of capital is 20%.

  1. Please verify that the information given above yields NPV = 0.
  2. If you decide to terminate the project in year two (2) what would be the NPV of the project?
  3. Suppose that the government now changes tax depreciation to allow a 100% write-off in year one (1). How does this affect your answers to parts a and b above?
  4. Would it now make sense to terminate the project after two rather than three years?
  5. How would your answers change if the corporate income tax were abolished entirely

Please show the detailed process

In: Finance

This question asks questions about the movie called the BIG SHORT Discussion- Changes in company values...

This question asks questions about the movie called the BIG SHORT

Discussion- Changes in company values from market conditions

Questions--Talk about what happened in the marketplace, and what impact the market had on the values of the securities in question. Where did the value go from Bear Stearns and Lehman Brothers?

In: Finance

How would the following changes in price affect total revenue? That is, would total revenue increase,...

How would the following changes in price affect total revenue? That is, would total revenue increase, decline, or remain unchanged?

  1. Price falls and demand is inelastic.

  2. Price rises and demand is elastic.

  3. Price rises and supply is elastic.

  4. Price rises and supply is inelastic.

  5. Price rises and demand is inelastic.

  6. Price falls and demand is elastic.

  7. Price falls and demand is of unit elasticity

In: Economics

The new economy after the American Civil presented immense changes to industry, technology, occupations, and life...

The new economy after the American Civil presented immense changes to industry, technology, occupations, and life in general. As you know from your reading, these changes included the proliferation of factories and large corporations, as well as rising economic inequalities.

With these new challenges, we also begin to see new visions for how society can best address societal problems. This week's primary source readings (Voices of Freedom, Foner) present you with various thinkers and their views on the Gilded Age.

--

Discussion

Select two of the primary sources from this week's Voices of Freedom and answer the following questions:

Source #1:

1) According to this author, what are the main challenges of the Gilded Age Economy, who are being impacted, and what solutions does the author offer?

2) How does this author understand freedom in the Gilded Age?

Source #2:

3) According to this author, what are the main challenges of the Gilded Age Economy, who are being impacted, and what solutions does the author offer?

4) How does this author understand freedom in the Gilded Age?

In: Economics