# Questions Asked onJune 23, 2013

1. ## Physics

You are given vectors A = 5.0i - 6.5j & B = -3.5i + 7.0j. A third vector C lies on the xy-plane. Vector C is perpendicular to vector A, & the scalar product of C with B is 15.0. From this information, find the components of vector C.

2. ## statistics

the probability that a football game will go into overtime is 17%. In 240 randomly selected football games, what is the mean and the standard deviation of the number that went into overtime

3. ## math

6) The annual precipitation amounts in a certain mountain range are normally distributed with a mean of 88 inches, and a standard deviation of 10 inches. What is the likelihood that the mean annual precipitation during 25 randomly picked years will be less

4. ## math

Catherine borrowed \$19,000 on June 20, at 10% interest. If the loan was due on September 17, what was the amount of interest on the loan using the exact interest method?

5. ## Physics

While playing a game of billiards, your 0.50 kg cue ball, travelling at 1.9 m/s, glances off a stationary 0.30 kg billiard ball so that the billiard ball moves off at 1.3 m/s at an angle of 32º clockwise from the cue ball’s original path. What is the

6. ## physics

An eagle is flying horizontally at 6.8 m/s with a fish in its claws. It accidentally drops the fish. (a) How much time passes before the fish's speed doubles? (b) How much additional time would be required for the speed to double again?

7. ## Math

Find the amount of the principal on a loan at 6% interest for 274 days if the interest was \$68.50, using the ordinary interest method.

8. ## Physics

A hot-air balloon is accelerating upward under the influence of two forces, its weight and the buoyant force. For simplicity, consider the weight to be only that of the hot air within the balloon, thus ignoring the balloon fabric and the basket. The hot

9. ## Physics

If the total mass of the hydrogen in the hindenburg zeppelin was 18000kg, what volume did the hydrogen occupy?

10. ## Physics

A hot-air balloon is accelerating upward under the influence of two forces, its weight and the buoyant force. For simplicity, consider the weight to be only that of the hot air within the balloon, thus ignoring the balloon fabric and the basket. The hot

11. ## education

In a minimum of 300 words, discuss at least five selection criteria you would use to “weed” the sites, explaining why you chose the criteria you

12. ## physics

two stones are dropped simultaneously into a calm pool of water. The crests of the resulting waves form equally spaced concentric cicles, as shown in the figures. The waves interact with each other to create certain interference patterns. explain why the

If the interest rate is 3% and a total of \$4,370.91 will be paid to you at the end of 3 year, what is the present value of that sum.

14. ## physics

vicky walks 8km east, the 5km south and final 6km west. find her final displacement

15. ## statistics

The pucks used by the National Hockey League for ice hockey must weigh between 5.5 and 6.0 ounces. Suppose the weights of pucks produced at a factory are normally distributed with a mean of 5.75 ounces and a standard deviation of 0.11 ounce. What

16. ## Math 61

Find the arc length of the curve y^3=8x^2 fr0m x=1 to x=8.

17. ## statistics

2. Bender electronics buys keyboards for its computers from another company. The keyboards are received in shipments of 100 boxes, each box containing 20 keyboards. The quality control department at Bender Electronics first randomly selects one box from

18. ## conceptual science

In the absence of air resistance, a ballplayer tosses a ball straight up. (a) By how much does the speed of the ball decrease each second while it is ascending? (b) By how much does its speed increase each second while it is descending? (c) How does the

19. ## Math

Price of article = \$315.50 Down payment = \$31.55 Monthly payment amount = \$16.50 Duration of payments = 20 months True annual interest rate to the nearest tenth= %

20. ## Statistics

According to the American Automobile Association (AAA), the mean cost of a gallon of regular unleaded fuel in 2007 was \$2.835. AAA noted that the standard deviation of the fuel price was \$0.15. A random sample of n=100 gas stations is selected and the mean

21. ## statistics

Page 1 of 2 4. Despite all efforts by the quality control department, the fabric made at Benton Corporation always contains a few defects. A certain type of fabric made at this corporation contains an average of .5 defects per 500 yards. Using the Poisson

Kiddie Kites buys Japanese kite kits with a list price of \$6,500. If the supplier offers trade discounts of 30/15/15, find the trade discount amount to the nearest cent.

23. ## Physics

A block of mass m1 is on top of a block of mass m2. Block 2 is connected by an ideal rope passing through a pulley to a block of unknown mass m3 as shown. The pulley is massless and frictionless. There is friction between block 1 and 2 and between the

24. ## statistics

6. According to the records of Enersource, an electric company serving the Mississauga area, the mean electricity consumption for all households during winter is 1650 kilowatt-hours per month. Assume that the monthly electricity consumption during winter

25. ## maths

calculate the volume occupied by 5.25 gram of nitrogen at 26 degree Celsius and 74.2 cm of pressure

26. ## physics

A 73kg human sprinter can accelerate from rest to 12m/s in 2.7s . During the same interval, a 27kg greyhound can accelerate from rest to 19m/s .

27. ## physics

A volleyball is spiked so that it has an initial velocity of 12.0 m/s directed downward at an angle of 53.2 ° below the horizontal. What is the horizontal component of the ball's velocity when the opposing player fields the ball?

28. ## Physics

Air in a balloon does 50 J of work while absorbing 70 J of heat.What is its change in internal energy?

29. ## statistics check

Consider the following bivariate data. Point A B C D E F G H I J x 3 4 2 1 7 2 1 0 4 2 y 1 7 3 3 6 6 5 0 6 2 (b) Calculate the covariance. (Give your answer correct to two decimal places.) 5.35 was my answer . (c) Calculate sx and sy. (Give your answers

30. ## statistics

According to the Journal of the American Medical Association, the doctors found that in the week before and the week after Thanksgiving, there were 12,000 total deaths and 6062 of them occurred in the week before Thanksgiving. Construct a 95% confidence

31. ## principles of management

Which of the following is an example of an internal stakeholder of an organizations

32. ## matsh

The picture below shows a figure in the complex plane, consisting of two circles of radius 1, with centers (3,0) and (−3,0) and a lower half of the circle of radius 2 with the center (0,−23√). Find the number of positive integers n≤1000, such that

33. ## Physics (Stress & Strain)

A uniform bar 1.900m in length and having a cross sectional area of 10.500cm^2 is subject to a loading of 5550.000N. This load causes an extension of the bar length of 1.100mm. Calculate the stress and strain produced. Stress = Load/ Area Strain = Change

34. ## Physics

The builders of the Great Pyramids of Egypt are thought to have used ramps to move the large 20,000 kg (22 ton) stone blocks into place at the construction site. To reduce friction, the Egyptians are assumed to have used rollers between the ramp and each

35. ## physics

A puck is moving on an air hockey table. Relative to an x, y coordinate system at time t = 0 s, the x components of the puck's initial velocity and acceleration are v0x = +3.2 m/s and ax = +1.9 m/s2. The y components of the puck's initial velocity and

36. ## English

I got an A+, - Congratulations! I'm so happy for you. (What is the meaning of 'for' in the last sentence? What is the similar sentence, #1 or #2?) 1. I'm so happy thanks to you. 2. I'm so happy about you.

37. ## physics

A skateboarder, starting from rest, rolls down a 13.4-m ramp. When she arrives at the bottom of the ramp her speed is 6.14 m/s. (a) Determine the magnitude of her acceleration, assumed to be constant. (b) If the ramp is inclined at 32.6 ° with respect to

38. ## statistics

3. Magnetic resonance imaging (MRI) is a process that produces internal body images using a strong magnetic field. Some patients become claustrophobic and require sedation because they are required to lie within a small, enclosed space during the MRI test.

39. ## math/algebra

solve the equation log2(3x-2) - log2 (x-5)=4

40. ## physics

A basketball player is running at 5.10 m/s directly toward the basket when he jumps into the air to dunk the ball. He maintains his horizontal velocity. (a) What vertical velocity does he need to rise 0.800 meters above the floor

41. ## finance

Suppose Delta Company issued bonds with a 15-year maturity, a Rs. 1,000 par value, a 12 percent coupon rate, and semiannual interest payments. If actual price of the bond in the market is Rs 900, compute yield to maturity, current yield and capital gain

42. ## Physics

A 10 g bullet is fired into a 5 kg wooden block initially at rest on the floor. The bullet lodges in the block and the block slides 10 cm across the floor before coming to rest. If the coefficient of kinetic friction between the block and the floor is 0.5

43. ## statistics

The National Highway Traffic Safety Administration analyzes the crash test data for new cars. One variable measured is the severity of the injury due to a collision. The higher the severity, the higher the points assigned. Assume that the injury rating is

44. ## Chemistry

How do I solve this? How much heat (in Joules) is gained by the water when a chemical reaction takes place in 100.0 ml aqueous solution, has a temperature increase of 12.67°C and a specific heat capacity of 4.180 J/°Cg? [Hint: ignore any effects of the

45. ## chem

How many grams do 4.30 x 1021 molecules of UF6 weigh? Report the answer in correct number of significant figures and units.

46. ## physics

In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.0771 s, during which time it experiences an acceleration of 162 m/s2. The ball is launched at an angle of 53.3° above the ground. Determine the (a)

47. ## Algerbra

A bank teller has 54 5 dollar bills and 20 dollar bills in her cash drawer. The value of the bills is 780 dollars. How many 5 dollar bills are there?

48. ## math/ algebra

solve the equation log (4x)= log5 + log(x-4)

49. ## math

Your service contract for washer repair maintenance is offered at \$48 per year. If a customer wants to pay it off in equal monthly installments for one year and if the true annual interest charge is 18%, what should his monthly payment be?

50. ## physics

A major-league pitcher can throw a ball in excess of 37.8 m/s. If a ball is thrown horizontally at this speed, how much will it drop by the time it reaches a catcher who is 17.0 m away from the point of release?

51. ## science

an electric oven of 2kW power heating is operated in a domestic circuit that has a current rating 5A. If the supply voltage is 220V. What result do you expect? Explain

52. ## statistics

Consider the following bivariate data. Point A B C D E F G H I J x 3 4 2 1 7 2 1 0 4 2 y 1 7 3 3 6 6 5 0 6 2 (b) Calculate the covariance. (Give your answer correct to two decimal places.) (c) Calculate sx and sy. (Give your answers correct to three

53. ## math

A researchr assistant made 160mg of a radioactive, and found that there was only 20mg left after 45hours. a) What is the half-life of this substance? b) Write a function to represent the amount of substance left after x hours c) If the researcher kew he

54. ## physics

A fire hose ejects a stream of water at an angle of 32.2 ° above the horizontal. The water leaves the nozzle with a speed of 26.5 m/s. Assuming that the water behaves like a projectile, how far from a building should the fire hose be located to hit the

55. ## Math

There are 100 runners, each given a distinct bib labeled 1 to 100. What is the most number of runners that we could arrange in a circle, such that the product of the numbers on the bibs of any 2 neighboring runners, is less than 1000?

56. ## math

translate the phrase into a mathematical expression and then evaluate it. sixtten squared divided by four cubed. The given expression in symbols is? (do not simplify. type exponential notation with positive exponents.) Evaluated, the expression is equal

57. ## physics

A volleyball is spiked so that it has an initial velocity of 12.0 m/s directed downward at an angle of 53.2 ° below the horizontal. What is the horizontal component of the ball's velocity when the opposing player fields the ball?

58. ## math

A 10% acid solution is to be mixed with a 50% solution to get 200 liters of a 20% solution. How many liters of each solution should be used?

59. ## math

Suppose a student wants to be a millionaire in 40 years. If she has an account that pays 8% interest compounded monthly, how much must she deposit each month in order to achieve her goal of having \$1,000,000? What is the present value of this annuity?

60. ## Math

give the number whose hundred place is one-third of the greatest one-digit number, the tens place is twice the hundred place, the ones place is four times the digit in the hundreds place divided by 2, and the three digits in the thousands period is the

61. ## Algebra

Assume the car can be purchased for 0% down for 60 months (in lieu of rebate). A car with a sticker price of \$42,300 with factory and dealer rebates of \$5,100 (a) Find the monthly payment if financed for 60 months at 0% APR. (Round your answer to the

62. ## chemistry

A 46kg sample of water absorbs 4.00×102kJ of heat. If the water was initially at 29.7 ∘ C , what is its final temperature?

63. ## physics

prove that average velocity of particle over an interval of time is either smaller than or equal to average speed of particle over same interval?

64. ## Physics

A spring with a spring constant of 22N/m is initally compressed by 2.3cm. How much work is required to compress the spring an additional 1.7 cm? I can't find information in my book about compression; only work and exertion. Please help and provide all

65. ## Math, Physics

Two blocks with indicated masses are connected by a cable of negligible mass over a pulley with radius 45cm. The block on the incline is sliding without friction and experiences a constant acceleration of 2 m/sec^2. Determine the mass of the pulley

66. ## physics

A rocket is fired at a speed of 54.0 m/s from ground level, at an angle of 63.0 ° above the horizontal. The rocket is fired toward an 52.8-m high wall, which is located 37.0 m away. The rocket attains its launch speed in a negligibly short period of time,

67. ## MIT 2.01X

Posted by MAN on Tuesday, June 18, 2013 at 9:24pm. We will obtain bending moment diagrams for three beams and calculate stresses inside the beams. For each beam, take the x-axis along the neutral axis of the beam, oriented from left to right, with origin

68. ## Phil103 Informal Logic

1. Question : "~ P v Q" is best read as Student Answer: Not P and Q INCORRECT It is not the case that P and it is not the case that Q CORRECT It is not the case that P or Q It is not the case that P and Q Instructor Explanation: The answer can be found in

69. ## math

Suppose a student wants to be a millionaire in 40 years. If she has an account that pays 8% interest compounded monthly, how much must she deposit each month in order to achieve her goal of having \$1,000,000? What is the present value of this annuity?

70. ## math

Can someone please help me on these I have look at the examples and done just what they did, but I still get it wrong and I only have one more time to try. Use the following table to answer the questions. (Give your answers correct to two decimal places.)

71. ## math/algebra

find the domain of the function 1) f(x)= log2( 49-x^2) 2) f(x)=In [1/x+5]

72. ## statistics

Consider the following set of data. (18, 12), (29, 48), (65, 29), (82, 24), (115, 56), (124, 13) (a) Calculate the covariance of the set of data. (Give your answer correct to two decimal places.) . (b) Calculate the standard deviation of the six x-values

73. ## Precal

Solve the exponential equation algebraically 5^(-t/2) = 0.20

74. ## English

I urgently need someone from Jiskha to check if these questions are grammatically correct. Thank you very much in advance. 1) Can you briefly repeat the content of your history dissertation in English? 2) What is the first part of the poem "The Waste Land"

75. ## math

How many ways are there to write 2000 as the sum of powers of 2 with non-negative exponents, where each power is used at most twice?

76. ## physics

A projectile is fired through the air. It is launched from the ground, and travels without interference from wind or air resistance, landing on a raised platform above the field. Compare the following values: 1-Initial speed vs. final speed: 2-Initial

77. ## English

Thank you very much. I just have one more question. I've written a paragraph on Wordsworth's life using the past. At the end I included the following sentence: The power of his imagination enabled him to communicate his knowledge, so that he becomes (not

78. ## ALGEBRA

At a certain time of day, a 5 foot 10 inch woman cast a 3 foot 3 inch shadow. How tall is a nearby tree that casts a 13 foot 8 inch shadow at the same time of day

79. ## math

Can someone give me the formula to work this out, I am not sure. Find the value of t for the difference between two means based on an assumption of normality and this information about two samples. (Use sample 1 - sample 2. Give your answer correct to two

80. ## physics

A coin is at the bottom of a fountain 60 cm deep. The water in the fountain is frozen. What is the apparent depth of the coin? The index of refraction of ice is 1.31.

81. ## English

The address you are sending your business letter to is called: A. the external address. B. the inside address. C. the complimentary close. D. the salutation. im confused between A n D

82. ## maths

Find the sum of the squares of the three solutions of the equation x3+3x2−7x+1=0.

83. ## physics

A space vehicle is coasting at a constant velocity of 24.9 m/s in the +y direction relative to a space station. The pilot of the vehicle fires a RCS (reaction control system) thruster, which causes it to accelerate at 0.338 m/s2 in the +x direction. After

How much heat (in Joules) is gained by the water when a chemical reaction takes place in 100.0 ml aqueous solution, has a temperature increase of 12.67°C and a specific heat capacity of 4.180 J/°Cg? [Hint: ignore any effects of the calorimeter and solve

85. ## chem

If I initially have a gas at a pressure of 13.5 atm, a volume of 2300 mL, and a temperature of 200 K, and then I raise the pressure to 14 atm and increase the temperature to 300 K, what is the new volume of the gas? Report the answer in correct number of

86. ## Statistics

1. Let x be the number of heads obtained in two tosses of a coin. The following table lists the probability distribution of x. x 0 1 2 P(x) .25 .50 .25 Calculate the mean and standard deviation of x. Give a brief interpretation of the value of the mean.

87. ## homeland security

Weekly tasks or assignments (Individual or Group Projects) will be due by Monday and late submissions will be assigned a late penalty in accordance with the late penalty policy found in the syllabus. NOTE: All submission posting times are based on midnight

88. ## Chemistry

how can be a carbonyl compound separated from a non-carbonyl compound by: A. Filteration B. Crystallization C. Sublimation D. Solvent extraction

89. ## math

Consider the following ANOVA experiments. (Give your answers correct to two decimal places.) (a) Determine the critical region and critical value that are used in the classical approach for testing the null hypothesis Ho: ì1 = ì2 = ì3 = ì4, with n = 19

90. ## English

I left out a few more questions. Thank you very much in advance. 1) How is Mrs Dalloway described at the beginning of the novel? What is Mrs Dalloway fond of? 2) Who is Septimus Warren Smith? Describe Septimus and his wife Lucretia's reactions to the

91. ## English

These are the very last things. Thank you very, very much. 1) In Joyce’s story The Sisters Nannie brings a decanter of sherry and some wine-glasses and invites the protagonist to take a little glass of wine. 2) Briefly refer to the plot of Joyce's tale

92. ## summery

my teacher told me to find something funny about brooklyn. i spent 2 1/2 hours in looking for it but couldn't find anything. plssssssssssss u must help me im getting tierd of looking at the computer screen.

How much heat is absorbed by the calorimeter (qcal) if the temperature is increased 12.4 °C and the calorimeter constant (Ccal) is 3.30 J/°C?

94. ## statistics check

The computer-science aptitude score, x, and the achievement score, y (measured by a comprehensive final), were measured for 10 students in a beginning computer-science course. The results were as follows. (Give your answers correct to two decimal places.)

95. ## Physic (Stress & Strain)

1) Calculate the tension stress in a 21.00mm diameter rod subjected to a pull of 30.000kN. 21mm =0.021m 30.000kN = 30000N A = pi*d^2/4 = 3.1416 * (0.021)^2m^2/ 4 = 3.1416 * 0.000441/ 4 = 0.0013854456/ 4 = 0.0003463614 Stress = Load/ Area = 30000/

96. ## Math help

Find the 98% confidence interval for estimating ìd based on these paired data and assuming normality. (Give your answers correct to one decimal place.) Before 50 55 61 52 68 54 After 34 58 56 36 40 39 Lower Limit Incorrect: Your answer is incorrect. 64.0

97. ## pre algebra

a fieldstone patio is in the shape of a square that measures 9 ft on each side what is the area of the patio

98. ## Maths

Find the largest integer S which is a divisor of n^5−17n^3+16n for every integer n≥4. Tried it for a number of times. Please answer if you know how to solve it.

99. ## phy

In an urn, there are several colored balls, with equal numbers of each color. We add 14 balls which are all of the same new color, that is different from those in the urn. It is calculated that the probability of drawing, without replacement, two balls of

100. ## mats

Suppose f(x) is a polynomial with integer coefficients of degree 100. Find the biggest possible number of pairs of integers n

101. ## statistics

Consider the following ANOVA experiments. (Give your answers correct to two decimal places.) (a) Determine the critical region and critical value that are used in the classical approach for testing the null hypothesis Ho: ì1 = ì2 = ì3 = ì4, with n = 19

102. ## physics

In diving to a depth of 558 m, an elephant seal also moves 925 m due east of his starting point. What is the magnitude of the seal's displacement?

103. ## math

The difference between two numbers is 36. The sum of these two numbers is 62. Find the numbers.

104. ## Physics (Stress & Strain)

What is the factory of safety of a steel hanger having an ultimate strength of 630.000MPa and supporting a load of 61000.000N. The steel hanger in question has a cross sectional area of 6.500cm^2. ANS = (Round to 3 decimal places) 6.500cm = 0.065m Load =

105. ## circuit

Q1 In this problem, we look at the design of an inverter. For the entirety of this problem VS=7.0V, and all transistors are modeled with the SR model with RON=120Ω. We design the inverter shown in Figure 1.

106. ## accounting

Joe makes \$40,000 per year as an exempt employee. She worked 25 hours of overtime in the month of March. Payday for wages earned in the month of March is April 7. Ignoring Federal and State income tax withholdings, how much would he receive for September

107. ## math

For every prime p consider all polynomials f(x) with integer coefficients from 1 to p and degree at most p−1, such that for all integers x the number f(2x)−f(x) is divisible by p. Find the sum of all primes p

108. ## MATH

Give the number whose hundreds place is one-third of the greatest one-digit number, the tens place is twice the hundreds place divided by 2, and the three digits in the thousands period is the product of the digits in the units period.

109. ## maths

The real numbers x and y satisfy the nonlinear system of equations {2x2−6xy+2y2+43x+43yx2+y2+5x+5y==174,30. Find the largest possible value of |xy

110. ## chemistry

1)How can you determine average velocity from displacement time graph?

111. ## english

1)The team exclaimed with delight that they have won The match

112. ## Chemistry

How much heat is absorbed by the calorimeter (qcal) if the temperature is increased 12.4 °C and the calorimeter constant (Ccal) is 3.30 J/°C?

113. ## help maaaaath

Find the largest possible number of distinct integer values {x_1,x_2,…,x_n}, such that for a fixed reducible degree 4 polynomial with integer coefficients, |f(x_i)| is prime for all i?

114. ## maths

f is a function on the positive reals that satisfies f(x2+1)1x√=x6x, what is the value of f(82)?

115. ## physics

A golfer hits a shot to a green that is elevated 2.60 m above the point where the ball is struck. The ball leaves the club at a speed of 16.7 m/s at an angle of 33.0˚ above the horizontal. It rises to its maximum height and then falls down to the green.

116. ## English

Do not send out a resume until at least three individuals, preferably __________, have agreed to recommend you. A. professors and/or job supervisors B. friends C. relatives D. members of the clergy i don't know this one please some one help

117. ## (Math)Simplifying using the laws of exponents

I need help with a few problems. 1.) (x^3/4 times y^1/3)^2/3 How is the answer x^1/2y^2/9 2.)(x^-1/3 times y) (x^1/2 times y^-4/3) How is the answer x^1/6 over y^1/3 3.)(4a^2b^-7/2)^1/2 How is the answer 2a over b^3/4 4.) (x^2/3y^-1/3 over 8x^1/2y)^1/3 How

118. ## statistics

Consider the following table and use the formulas that are given for computing the correlation coefficient. (Give your answer correct to two decimal places.) x 1 1 0 0 0 y 7 3 5 6 6 r = n xy − x y n x2 − x 2 n y2 − y 2 (1) r = SS(xy) SS(x) · SS(y)

119. ## heeeelp math

Find the largest possible number of distinct integer values {x_1,x_2,…,x_n}, such that for a fixed reducible degree 4 polynomial with integer coefficients, |f(x_i)| is prime for all i?

120. ## maths

How many ways are there to write 2000 as the sum of powers of 2 with non-negative exponents, where each power is used at most twice?

121. ## Calculus 2

(x^3+2x^2-15x+1)/(x^2+2x-15) from 0 to 7

122. ## chemistry

why acceleration at any instant does not velocity at any instant?

123. ## hindi

we have to write the assignment in hindi of chapter 1 "do belo ki katha"

124. ## maths

If ABC is a triangle with AB=20,BC=22 and CA=24. Let D lie on BC such that AD is the angle bisector of ∠BAC. What is AD2?

125. ## chemistry

show that accelration at any instant does not depend upon velocity at any instant?

126. ## Vegetarian

why do vegetarians need to be careful about their protein intake?