Answers
a)
energy stored in sprinter E1 = (1/2)*k*x1^2
k = spring constant = 33 N/mm = 33*10^3 N/m
x1 = stretch in sprinter = 44 mm = 0.044 m
E1 = (1/2)*3*10^3*0.044^2 = 2.904 J
energy stored by rest E2 = (1/2)*k*x2^2
k = spring constant = 33 N/mm = 33*10^3 N/m
x2 = stretch in sprinter = 32 mm = 0.032 m
E2 = (1/2)*3*10^3*0.032^2 = 1.536 J
excess energy store by sprinter = E1 - E2 = 1.368 J
==========================
b)
kinetic energy recovered = 97% of E1
KE = (97/100)*2.904 = 2.82 J
=====================
c)
the missing energy goes in the form of internal energy
.Similar Solved Questions
1 answer
For the payroll period ended on June 25, 2016, gross pay was $15,550, net pay was...
For the payroll period ended on June 25, 2016, gross pay was $15,550, net pay was $10,400, FICA tax withholdings were $1,900, income tax withholdings were $2,600, and medical insurance contributions were $650. Required: Use the horizontal model to show the effects of the payroll accrual on June 25, ...
1 answer
Weston 12 Question 6 4 points Save Answ Dubai government has decided to fund a program...
Weston 12 Question 6 4 points Save Answ Dubai government has decided to fund a program for improving reading Determine the equivalent annual costat an interest rate of 10% per year. is in elementary school students. The first con is $300.000 now, and an update amount of $100.000 every 5 years foreve...
1 answer
Example: Suppose the 8% coupon (semiannual), 30-year maturity bond sells for $1 ,150 and is callable...
Example: Suppose the 8% coupon (semiannual), 30-year maturity bond sells for $1 ,150 and is callable in 10 years at a call price of $1,100. What is its yield to maturit y and yield to call? • Yield to maturity? • Yield to call?...
1 answer
Please answer all parts. Serum cholesterol is an important risk factor for coronary disease. Suppose that...
please answer all parts. Serum cholesterol is an important risk factor for coronary disease. Suppose that serum cholesterol is approximately normally distributed with mean 210 mg/dL and standard deviation 52.15 mg/dL a Cholesterol levels in the top 17% are classified as high enough to warrant risk f...
1 answer
I need help on number 80 M ILW Iwo ships, A and B, leave port at...
I need help on number 80 M ILW Iwo ships, A and B, leave port at the same time. Ship A travels northwest at 24 knots, and ship B travels at 28 knots in a direction 40° west of south. (1 knot 1 nautical mile per hour see Appendix D.) What are the (a) magnitude and (b) direction of the velocit...
1 answer
Override toString() for the class HighScores. It should return a String that contains all of the...
Override toString() for the class HighScores. It should return a String that contains all of the high scores in entries, formatted nicely. Note that toString is already implemented for the Score class. Then, write a driver program (in a file named Main.java) that thoroughly tests HighScores (i.e. ad...
1 answer
RC-1A charge +Q is evenly distributed around a semicircle of radius R in the x-y plane...
RC-1A charge +Q is evenly distributed around a semicircle of radius R in the x-y plane as shown to the right. a) Use dq charge elements to explain why the net field at the center of the semicircle (the origin) has no y component. Use a drawing like the one shown in your explanation. b) Apply Coulomb...
1 answer
Suppose you want to have $500,000 by the end of 7 years. You decide to deposit...
Suppose you want to have $500,000 by the end of 7 years. You decide to deposit an equal amount of money each month (starting next month) into a bank account that advertises a nominal rate of 4% compounded monthly. How much should you deposit each month?...
1 answer
Loan Repayment
A house is purchased for $200,000 and a 20% down payment is made. The balance is financed by a 30 year adjustable rate mortgage with monthly payments. The initial interest rate is 12% per annum, compounded monthly. Just after the 240th payment, the interest rate is increased to 14% compounded monthl...
1 answer
Use the following information to compute the cost of direct materials used for the current year....
Use the following information to compute the cost of direct materials used for the current year. Assume the raw materials inventory account is used only for direct materials. (Assume no indirect materials.) January 1 December 31 $ $ 6, 300 14, 800 10, 800 8,500 9,600 6, 800 Inventories Raw materials...
1 answer
The Fed can close a recessionary gap by _____ Group of answer choices selling U.S. government...
The Fed can close a recessionary gap by _____ Group of answer choices selling U.S. government bonds. increasing fiscal expenditure. lowering the interest rate. increasing taxes. decreasing taxes....
1 answer
Least one pathway by genotypically male (XY) could be phenotypically female. 3. If a person is...
least one pathway by genotypically male (XY) could be phenotypically female. 3. If a person is missing all or part of an X chromosome, which syndrome do they have? 4. When does differentiation of the gonads occur embryologically? When does differentiation of the brain occur embryologically? 5. What ...
1 answer
Material engineering 1. Metal 'P' exhibits a FCC structure. Determine its atomic radius, in nm. (30p)...
material engineering 1. Metal 'P' exhibits a FCC structure. Determine its atomic radius, in nm. (30p) Atomic weight (g/mol) 90.0 Metal Density (g/cm2) 11.75 P R (nm)= CC unit cell), 20p...
1 answer
An elastic cord is 61 cm long when a weight of 75 N hangs from it...
An elastic cord is 61 cm long when a weight of 75 N hangs from it but is 85 cm long when a weight of 210 N hangs from it. What is the “spring” constant k of this elastic cord? also, find the frequency of the motion with the 210N object hanging on it (Physics 'Algebra base')...
1 answer
Graphically illustrate the short-run effects of an increase in financial frictions.
Graphically illustrate the short-run effects of an increase in financial frictions....
1 answer
Problem 6 늪). Suppose X ~ Uniform(0, 1), and given X = x, Y ~ Exponential(λ = 하 a. Find the lin...
Problem 6 늪). Suppose X ~ Uniform(0, 1), and given X = x, Y ~ Exponential(λ = 하 a. Find the linear MMSE estimate of X given Y b. Find the MSE of this estimator. C. Check that E [XY] = 0 Problem 6 늪). Suppose X ~ Uniform(0, 1), and given X = x, Y ~ Exponential(λ = ...
1 answer
Question 12 (computerized accounting) Most accounting systems consist of which of the following components: A. Input...
Question 12 (computerized accounting) Most accounting systems consist of which of the following components: A. Input B. Processing C. Output D. All of the above...