A skier of mass 60 kg starts at the top of a steep slope with an incline of 40 degrees . The slope has a slight coefficient of kinetic friction of 0.05 . The slope is L = 100 meters long. At the bottom of the slope, there is an ice ramp (frictionless) that is 10 meters long and angled up at 30 degrees.

a) Draw a diagram of the problem.

b) How much potential energy does the skier start with?

c) How much total energy does the skier start with?

d) How much energy is lost to friction on the slope?

e) How fast is the skier traveling when she flies off the ramp?

f) If there is a large trampoline positioned to catch the skier at the same altitude (y-position) as the beginning of the ramp, where should it be positioned?

g) The trampoline behaves like a spring. If the first bounce on the trampoline depresses the trampoline surface by delta y=1m, Without worrying about energy losses, what is the characteristic spring constant of the trampoline?

h) Due to losses in the system, the trampoline losses about 2000 Joules every bounce. How many times does the skier bounce? Where does the 1000 Joules on each bounce go? Speculate.

If banks must hold $4 in reserves for each $10 in deposits, and the public decides to hold $2 in currency for each $10 in deposits, then how much money can be created by each $1 of the monetary base? Please type your short answer below. (Formatting will not be preserved.)

In national accounting terms, what is the meaning of value added? Please type your short answer below

Improved technology and worker training, leading to higher productivity, will shift the short-run aggregate supply curve to the right but will have no effect on the long-run aggregate supply curve. Do you agree or disagree? Explain your answer.

Please type your short answer below. (Formatting will not be preserved.)

An increase in real income causes the money demand curve to shift to the right. Do you agree or disagree? Explain your answer.

A variable, like the Fed’s discount rate, is an example of which of the following?

Real GDP is _________ GDP adjusted for changes in _________.

A 244 g mass is hung on a spring. As a result the spring stretches 20.5 cm. If the object is then pulled an additional 3.0 cm downward and released, what is the period of the resulting oscillation?

Please show work :)

F=kx found k, then use 2pi(sqrtm/k)? convert centimeters to meters and grams to kg? I resulted T= 0.972 confirm please.

I'm trying to Generate number every 3 seconds and update the currenet number.I'm able to generate number every 3 seconds; However, the current number isn't update. I apperciate any help.

public static void main(String[] args) {
    
    Runnable helloRunnable = new Runnable() {
        public void run() {
      
            CurrentNum=task2();
        
            System.out.println("Result    ====    "+CurrentNum);

        }
    };

    ScheduledExecutorService executor = Executors.newScheduledThreadPool(1);
    executor.scheduleAtFixedRate(helloRunnable, 0, 3, TimeUnit.SECONDS);
    
     System.out.println("CurrentNum    ====    "+CurrentNum);
     
    
}
public static int task2() {
    // create instance of Random class 
    Random rand = new Random(); 

    // Generate random integers in range 0 to 999 
    int rand_int1 = rand.nextInt(1000); 
    
    return rand_int1;
}

outPut:

    CurrentNum    ====    0
    Result    ====    631
    Result    ====    789
    Result    ====    958

I want the output tobe:

    Result    ====    631
    CurrentNum ====    631
    Result    ====    789
    CurrentNum====    789

a sulfide of iron, containing 36.5% S by mass, is heated in O2(g), and the products are sulfur dioxide and an ioxide of iron containing 27.6% 0, by mass.

Write a balanced chemical question for this reaction.

A professional couple wishes to purchase a new home costing $750,000, make a 20 percent down payment, and finance the remaining $600,000. The rate quoted for a conventional 30-year loan is 6.5084 percent interest with 1.875 points and no other closing costs. If, immediately after the one hundred twentieth payment (10 years), the professional couple decides to sell the house, what will be the unpaid balance on the loan with the points added to it?

Padre holds 100 percent of the outstanding shares of Sonora. On January 1, 2016, Padre transferred equipment to Sonora for $84,000. The equipment had cost $133,000 originally but had a $43,000 book value and five-year remaining life at the date of transfer. Depreciation expense is computed according to the straight-line method with no salvage value. Consolidated financial statements for 2018 currently are being prepared. What worksheet entries are needed in connection with the consolidation of this asset? Assume that the parent applies the partial equity method. (If no entry is required for a transaction/event, select "No journal entry required" in the first account field.)

Question: Use backtracking algorithm design to write Java code to solve the subset problem: given a set of distinct integers, return all possible subsets. for example, input: new int[] {1,2,3}

output: [], [3], [2], [2,3], [1], [1,3], [1,2], [1,2,3]

Patsy Ltd. produces ice-cream and would like to accurately forecast sales so that it can meet the demands of customers. In order to plan properly, the Operations Manager would like to forecast sales for the next 4 months and would need your assistance. Identify the quantitative techniques covered in this course. Choose any two techniques, describe them and use them to demonstrate how you will forecast sales for the next 4 months. [15 marks] Show how you will measure the accuracy of the quantitative forecast

Power Music owns five music stores, where it sells music, instruments, and supplies. In addition, it rents instruments. At the end of last year, the new accounts showed that although the business as a whole was profitable, the Fifth Avenue store had shown a substantial loss. The income statement for the Fifth Avenue store for last month follows:

Additional computations:

^a These costs would be saved if the store were closed.

^b The rent would be saved if the store were closed.

^c Assessed annually on the basis of average inventory on hand each month.

^d 8.5% of cost of departmental equipment. The equipment has no salvage value, and Power Music would incur no costs in scrapping it.

^eAllocated on the basis of store sales as a fraction of total company sales. Management estimates that 5% of these costs allocated to the Fifth Avenue store could be saved if the store were closed.

^f Based on average inventory quantity multiplied by the company's borrowing rate for three-month loans.

Analysis of these results has led management to consider closing the Fifth Avenue store. Members of the management team agree that keeping the Fifth Avenue store open is not essential to maintaining good customer relations and supporting the rest of the company's business. In other words, eliminating the Fifth Avenue store is not expected to affect the amount of business done by the other stores.

Required:

a. Calculate the cost savings in closing the Fifth Avenue store.

4) A client wants to finance the purchase of a house costing $50,000 over a period of 10 years. The annual interest rate is 10%. There are two repayment term options. Option 1 allows for annual repayments and option 1 allows for monthly repayments. Please determine what the annual payment would be and what would be the monthly payment would be. Hint, the monthly payment with NOT be 1/12th of the annual payment.

[The following information applies to the questions displayed below.] In 2018, Sheryl is claimed as a dependent on her parents' tax return. Sheryl did not provide more than half her own support. What is Sheryl's tax liability for the year in each of the following alternative circumstances?  Use Tax Rate Schedule, Dividends and Capital Gains Tax Rates, Estates and Trusts for reference. (Leave no answer blank. Enter zero if applicable.)

a. She received $5,400 from a part-time job. This was her only source of income. She is 16 years old at year-end.

b. She received $5,400 of interest income from corporate bonds she received several years ago. This is her only source of income. She is 16 years old at year-end.

c. She received $5,400 of interest income from corporate bonds she received several years ago. This is her only source of income. She is 20 years old at year-end and is a full-time student.

d. She received $5,400 of qualified dividend income. This is her only source of income. She is 16 years old at year-end.

2018 Tax Rate Schedules

Individuals

Schedule X-Single

Schedule Y-1-Married Filing Jointly or Qualifying Widow(er)

Schedule Z-Head of Household

Schedule Y-2-Married Filing Separately

Tax Rates for Net Capital Gains and Qualified Dividends

*This rate applies to the net capital gains and qualified dividends that fall within the range of taxable income specified in the table (net capital gains and qualified dividends are included in taxable income last for this purpose).

Estates and Trusts

Show that the acceleration of any object down a frictionless incline that makes an angle theta with the horizontal is a= g sin theta (note that the acceleration is independent of mass.

Do Cell Phones Cause Cancer?

In 5-6 sentences in length using information from the article or outside sources to support your response.

In 2011, the International Agency for Research on Cancer listed radiofrequency electromagnetic fields (EMF) as a “possible human carcinogen.” Because cell phones emit radiofrequency EMF and there are 5.5 billion cell phone subscribers worldwide, the question of whether radiofrequency fields cause cancer is a pressing one.

The electromagnetic spectrum ranges from low-energy static electric and magnetic fields to high-energy ultraviolet radiation, X-rays, and gamma rays. At the high end of the spectrum, the radiation has enough energy to displace electrons from atoms—creating free radicals, or “ionized particles,” that can disrupt DNA and cell function. Lower frequencies of radiation (“non-ionizing” radiation) carry less energy. Visible light, infrared radiation, radiofrequency radiation, and microwaves are all types of non-ionizing radiation.

The safety of cell phones is first a question of whether non-ionizing radiation can have harmful effects on humans. You do not need to look to research to prove to yourself that non-ionizing radiation can have an effect on the human body. Simply turn on your microwave for two minutes to heat your dinner and you prove that focused, high-level exposure to microwave radiation causes a lot of heat. Cell phones’ radiofrequency radiation has slightly less energy and substantially less intensity than microwaves, and the further the phone is from your body, the lower the exposure.

So the next question is whether long-term exposure to radiation at the radiofrequency level—such as that emitted from cell phones—can cause problems. This is where the data get tricky. Many studies have investigated whether there is a link between cell phones and human health. None have shown conclusive evidence of a strong link, and most have not even been able to show a connection. Animal studies and laboratory studies have not been able to confirm a carcinogenic effect. However, a few studies have shown a possible association between some brain tumors and high cell phone use and between childhood leukemia and radiofrequency-radiation exposure in the home. Current conclusions are that radiofrequency-radiation exposure is clearly not a strong carcinogen because, if it were, at least some of the studies would have found that. However, because of the inconsistencies, it remains possible that radiofrequency radiation may be a weak carcinogen. More data are needed before we can be absolutely certain that it is not and that long-term exposure is not harmful.

From computers to cell phones to remote controls, all populations are now exposed to increasing amounts of non-ionizing radiation, and the levels will continue to increase as technology advances. In addition, the length of time people are exposed is increasing as children are starting to use cell phones at younger and younger ages.

1:Do you talk for long hours on your cell phone or keep it in your pocket throughout the day? Can this increase your risk of cancer?

2:Given that exposure decreases the further you are from your cell phone, would you change how often or how you use your phone based on the available data? Why or Why not

3:Would you allow your children (or future children) to use cell phones? At what age?

4: After reading this article and consulting other sources, do you believe there is a link between cell phone use and cancer? Why or why not? (Be sure to provide support for your opinion)