An experiment to measure the value of g is constructed using a tall tower outfitted with two sensing devices, one a distance H above the other. A small ball is fired straight up in the tower so that it rises to near the top and then falls back down; each sensing device reads out the time that elapses between the ball going up past the sensor and back down past the sensor.

(a) It takes a time 2t₁ for the ball to rise past and then come back down past the lower sensor, and a time 2t₂ for the ball to rise past and then come back down past the upper sensor. Find an expression for g using these times and the height H. (Use the following as necessary: t₁, t₂, and H.)

(b) Determine the value of g if H equals 21 m, t₁ equals 4 s, and t₂ equals 3.42 s.

Thank you for the help- I can't figure out how to set up the first part and get an equation that will actually allow me to solve the second part. Let me know what steps you used. Thanks!

Discuss the two estimation methods of classification-type data mining models while considering ANN as a classifier.

For the equilibrium: CO2(g) + H2(g) ⇌ CO(g) + H2O(g), Kp = 10-5 at 25°C and ΔS = -41.8 J/K. One mole of CO, 2 moles of H2 and 3 moles of CO2 are introduced into a 5 L flask at 25 °C. Calculate the following:

a) ΔrGo at 25°C;
b) the total pressure of the mixture at equilibrium;
c) the number of moles of each species present at equilibrium;
d) Kp at 100°C.

Sanyu Sony started a new business and completed these transactions during December. Dec. 1 Sanyu Sony transferred $68,100 cash from a personal savings account to a checking account in the name of Sony Electric in exchange for its common stock. 2 The company rented office space and paid $2,000 cash for the December rent. 3 The company purchased $13,300 of electrical equipment by paying $5,100 cash and agreeing to pay the $8,200 balance in 30 days. 5 The company purchased office supplies by paying $900 cash. 6 The company completed electrical work and immediately collected $2,000 cash for these services. 8 The company purchased $2,880 of office equipment on credit. 15 The company completed electrical work on credit in the amount of $4,000. 18 The company purchased $500 of office supplies on credit. 20 The company paid $2,880 cash for the office equipment purchased on December 8. 24 The company billed a client $800 for electrical work completed; the balance is due in 30 days. 28 The company received $4,000 cash for the work completed on December 15. 29 The company paid the assistant’s salary of $2,000 cash for this month. 30 The company paid $540 cash for this month’s utility bill. 31 The company paid $930 cash in dividends to the owner (sole shareholder). 2.1. Prepare the income statement for the current month. 2.2. Prepare the statement of retained earnings for the current month. 2.3. Prepare the balance sheet as of the end of the month. 3. Prepare the statement of cash flows for the current month. (Cash outflows should be indicated with a minus sign.).

A crate rests on a frictionless incline, and is attached to a bucket of nails through a frictionless and weightless pulley as is shown.
Crate = 12.0 Kg Bucket = 25.0 Kg Angle = 20 degrees





a) You may assume that the crate accelerates up the incline. Calculate the magnitude of the acceleration of the crate. (8 points)










a = ________

b) If the acceleration of the crate was calculated to be a negative value, what could be said about the assumption in part a) that the crate moved up the incline? (2 points)






c) What is the magnitude of the Normal force of the incline pushing up on the crate (find N the Normal Force) ? (6 points)







N = _________

d) It turns out that there really is friction between the crate and the incline. The value of the friction coefficients is Us = 0.25, and Uk = 0.15. What will the acceleration be of the crate up the incline if you take in account friction? (8 points)











a = _________

e) A workman who was watching the crate accelerate up the incline decides he wants to adjust the system so that the crate maintains a steady speed while traveling up the incline. He removes nails from the bucket to achieve this goal. Taking into account the friction from part d), what should the new mass of the bucket of nails be to make this happen? (8 points)






m = ___________

e) LIST the three effects that account for the downward slope of the AD curve.

Complete a 1- to 2-page table using the template provided comparing your opinion of the rights listed below to a corresponding ethical theory: The right to a higher education The right to private phone conversations The right to health care The right of a presidential/government candidate to receive time on television List one ethical challenge that could impact a U.S. company that wants to acquire a Non-U.S.-based company.

It’s April 2020. You are an oil distributor, planning to buy 500,000 barrels of crude oil from British Petroleum (BP) in April 2021 in exchange for a spot price prevailing at that time. Because April 2021 spot price is unknown today, yourobjective is to hedge this risk. Suppose that the only available contract is for May 2021 delivery. Today the futures priceof crude oil for May 2021 delivery is $105.37. Contract size for crude oil is 1000 barrels. Assume that there is noexcessive volatility during delivery month.

1. If you were to hedge using futures market, would you enter short or long futures position in April 2020?Explain. (5 pts)

2. What contracts and how many contracts do you need? (5 pts)

Suppose that in April 2021 the futures contract’s price turns out to be $95.00 a barrel and spot price turns out to be$90.00 a barrel

3. Calculate total profit or loss on your futures position (6 pts)

4. What is the overall price per barrel paid by the oil distributor in April 2021 after taking into account profits orlosses on the futures position? Show your calculations. (6 pts)

Now suppose that in April 2021 the futures contract’s price turns out to be $115.00 a barrel and spot price turns out tobe $125.00 a barrel

5. What is the overall price per barrel paid by the oil distributor in April 2021 after taking into account profits orlosses on the futures position? Show your calculations. (6 pts)

A garden hose with a small puncture is stretched horizontally along the ground. The hose is attached to an open water faucet at one end and a closed nozzle at the other end. As you might suspect, water pressure builds up and water squirts vertically out of the puncture to a height of 0.73 m. Determine the pressure inside the hose. (Enter your answer to the nearest 1000 Pa.)

_____________Pa

calculate the pH of the solution resulting from the addition of 50 ml of .10 M NaOH to 50 ml of .10M HCN (k_a=4.9*10^-10) solution. The answer is 11.0 please show work and how to get to it

A particle carrying a charge of 5.0 μC is located at the origin of a rectangular coordinate system, and a particle carrying a charge of 3.0 μC is located at (0, 5.0 m).

A.

What are the x and ycomponents of the magnitude of the electric field at the position (5.0 m, 0)?

Enter your answers numerically separated by a comma.

B.

What are the x and ycomponents of the magnitude of the electric field at the position (-5.0 m, 0)?

Enter your answers numerically separated by a comma.

From the book of the odyssey

Memory plays a significant role in the Odyssey especially in its relationship/connection to ideals/expectations/generations. Briefly discuss this statement in its relationship to a specific character within the poem.

8% coupon bond with $1,000 face value, maturing in 20 years. Payments are paid annually.

A. If the market rate is 9%, what is the value of this bond?   
B. If the market rate is 7%, what is the value of this bond?

with explanation please

Raas Hardware is adding a new product line that will require an investment of $1,512,000. Managers estimate that this investment will have a 10-year life and generate net cash inflows of $320,000 the first year, $280,000 the second year, and $240,000 each year thereafter for eight years. Compute the payback period. Round to one decimal place.