# ed

Most popular questions and responses by ed
1. ## Math 2

Rui is a professional deep water free diver. His altitude (in meters relative to sea level), xxx seconds after diving, is modeled by: d(x)=1/2x^2 -10x What is the lowest altitude Rui will reach? I actually don't understand this problem if its asking for

2. ## Math 2

The rectangle below has an area of 30k^3+6k^2 The width of the rectangle (in meters) is equal to the greatest common monomial factor of 30k^3 and 6k^2 What is the width and length of the rectangle? Width:6k^2 Length: I couldn't find the length I need to be

3. ## Science

Please help me with these questions from the Science 6: Forces and Motions Unit Test. My answer-****** 1. Which of the following best describes the movement of an object at rest if no outside forces act on it? (1 point) It will move due to inertia. Gravity

4. ## Phyiosics

Three point charges lie in a straight line along the y-axis. A charge of q1 = -9.50 µC is at y = 6.30 m, and a charge of q2 = -7.20 µC is at y = -4.00 m. The net electric force on the third point charge is zero. Where is this charge located? y = m

5. ## Definition

In which sentence is the word SPUTTERS used correctly? a.The engine SPUTTERS when it is started in the cold. b.The ball SPUTTERS as it bounces across the court. c.That tree SPUTTERS when it drops its leaves. d.The wave SPUTTERS as it breaks over the beach

6. ## Physics

Ted Williams hits a baseball with an initial velocity of 120 miles per hour (176 ft/s) at an angle of θ = 35 degrees to the horizontal. The ball is struck 3 feet above home plate. You watch as the ball goes over the outfield wall 420 feet away and lands

7. ## Physics

The sun is 30 ∘ above the horizon. It makes a 54 m -long shadow of a tall tree.

8. ## Math

A die is rolled twice. What is the probability that the sum of the rolls is less than 4 given that one of the rolls is a 1? The answer is 3/11. Could someone tell me how to get this. Thanks?

9. ## probability

Marie distributes toys for toddlers. She makes visits to households and gives away one toy only on visits for which the door is answered and a toddler is in residence. On any visit, the probability of the door being answered is 3/4, and the probability

10. ## Bible Fill In The Blank

1. God can use suffering to cause us to ? spiritually and to bring ? to Himself. I Think the first one is "grow". I'm not sure about the other one. I'm Not Sure For Numbers 2-4 (Below). Please Help Me! 2. Ethical, doctrinal, numerical, and factual

11. ## physics

Two friends are sitting in a stationary canoe. At the person at the front tosses a sack to theperson in the rear, who catches the sack 2 later. Which plot in the figure shows thevelocity of the boat as a function of time? Positive velocity isforward,

12. ## probability

A factory produces copper wires. A blue mark is placed on a very long length of copper. The wire is then cut into pieces. The lengths of different pieces are independent, and the length of each piece is distributed according to the same PDF fX(x). Let R be

13. ## physics

At a circus, a human cannonball is shot from a cannon at 15m/s at an angle of 40 degrees from horizontal. She leaves the cannon 1m off the ground and lands on the way down in a net 2m off the ground. Determine her horizontal displacement.

14. ## Physics

What minimum coefficient of friction between the tires and the road will allow a 3700 kg truck to navigate an unbanked curve of radius 25 m at a speed of 45 km/h? My answer: Fnet=ma Ff=m(v2)/r) Ff=(3700)(452/25) Ff=(3700)(2025/25) Ff=(3700)(81) Ff=299700

15. ## history

Heather bought a ten-year maturity corporate bond when it was issued for \$1,000. The bond has an annual interest rate of seven percent and pays interest semi-annually. How much does she receive every six months?

16. ## basic electronics

What would happen if the two pith balls shown in Figure A-1 were held together for a few moments, then released? A. The charge would leak off and the pith balls would hang straight down. B. The pith balls would each receive a negative charge and they would

17. ## Chemistry

Could some please tell me if I did this problem correctly? Assume that at a given temperature, there is 1 g of CO2 gas in a one liter volume. How much mass of O2 would there be at the same temperature, in the same volume? My answer: Step 1) Find the number

18. ## Economics

I think I get this but could use some guidance to make sure, I am having problems with 2e). 1)In an article about the financial problems of USA Today, Newsweek, reported that the paper was losing about \$20 million a year. A Wall Street analyst said that

19. ## Economics

1)The director of marketing at Vanguard Corporation believes the sales of the company’s Bright Side Laundry detergent (S) are related to Vanguard’s own advertising expenditure (A), as well as the combined advertising expenditures of its three biggest

20. ## physics

A football kicker lines up to kick a game winning kick. The goalpost is 30m away and the ball must clear the 3.3m high cross-bar. If the kick leaves his foot at an angle of 35 degrees, how fast must the kick be to clear the bar?

21. ## Economics/Marginal Analysis

21st Century Electronics has discovered a theft problem at its warehouse and has decided to hire security guards. The firm wants to hire the optimal number of guards. The follwoign table shows how the number of security guards affects the number of radios

22. ## physics

A person jumps off a diving board 4.3 above the water's surface into a deep pool. The person's downward motion stops 2.1 below the surface of the water.

23. ## chemistry

How much hydrogen gas (H2) forms when 54 g of aluminum reacts with excess HCI ?

24. ## physics

A 89.0 N grocery cart is pushed 13.0 m along an aisle by a shopper who exerts a constant horizontal force of 40.0 N. If all frictional forces are neglected and the cart starts from rest, what is the grocery cart's final speed?

25. ## Electrical theory

a series RL circuit contains two resistors and two inductors. the resistors are 33 ohms and 47 ohms. inductors have inductive reactances of 60 ohms and 30 ohms. the applied voltage is 120 volts. what is the voltage drop on the 33 ohm resistor?

26. ## math

I have three packages whose total weight is 60 kg. If the two heaviest packages weigh 50 kg together, and the two lightest weigh 25 kg together, what is the weight, in kg, of the heaviest package?

27. ## Managerial Econ 2

1)The chief economist for Argus Corporation, a large appliance mfg., estimated the firm’s short-run cost function for vacuum cleaners using an average variable cost function of the form: 3 AVC = a + bQ + cQ Where AVC = dollars per vacuum cleaner and Q =

28. ## chemistry

How many moles of solute are contained in a 150ml solution of a 0.25 M NaNO3 solution?

29. ## Maths

a circus artist drops a ball from a high wire. The ball takes 1.5 seconds to reach the ground. (i) Find the height of the high wire above the ground (ii) write an expression for the speed of the ball t seconds after it's dropped where 0

30. ## Calculus

Two forces of equal magnitude act to 60 degrees. If their resultant has a magnitude of 30N, find the magnitude of the equal forces.

31. ## Physics

A bicycle is turned upside down while its owner repairs a flat tire. A friend spins the other wheel and observes that drops of water fly off tangentially from point A. She measures the heights reached by drops moving vertically (see figure). A drop that

32. ## physical science

you are riding in a car traveling at 60mi/hr in a 50 mi/hr zone. you spot a policeman 10 feet ahead. you slow down with an acceleration of -2ft/sec2 for 3 seconds. Do you get a ticket

33. ## Physics

A Silver bowl has a mass of 1.78kg. It is shaped like a cylinder and has a diameter of 35.0 cm and a height of 8.00cm. It is placed in water. Find (a)the volume of water it displaces, (b) The buoyant force exerted on it by the water, and(c)how deeply it

wile catching fireflies, you and your friend decide to have a competition. after m minutes, you have (3m +13) fireflies and your friend has (4m+6) fireflies. a. how many fireflies are caught per minute? b. ow many fireflies caught before the competition?

35. ## statistics

A researcher is testing the effect of a new cold and flu medication on mental alertness. A sample of n=9 college students is obtained and each student is given the normal dose of the medicine. Thirty minutes later, each students performance is measured on

36. ## Math

What is the probability oi rolling a total of 7 in two rolls of a standard die if you get an even number of the first roll? Could someone please help me? Thanks

37. ## Physics

In an accidental explosion, a satellite breaks in half while in circular orbit about earth. One half is brought momentarily to rest. What is the fate of the half brought to rest? What happens to the other half?

38. ## physics

A skier of mass 75.0 kg is pulled up a slope by a motor-driven cable. How much work is required to pull the skier 60.0 m up a 35° slope (assumed to be frictionless) at a constant speed of 2.0 m/s?

39. ## math

1.binomial 2.degree of monomial 3.monomial 4.perfect-square trinomial 5.standard form of polynomial A.a polynomial with two terms B.a polynomial in which the terms decrease in degree from left to right and there are no like terms C.a polynomial whith two

40. ## Economics Help!

4) The manager of Collins Import Autos believes that the number of cars sold in a day (Q) depends on two factor: (1) the number of hours the dealership is open (H) and (2) the number of salespersons working that day (S). After collecting the data for two

41. ## Physics

A car initially traveling at 33.4 m/s undergoes a constant negative acceleration of magnitude 1.80 m/s2 after its brakes are applied. (a) How many revolutions does each tire make before the car comes to a stop, assuming the car does not skid and the tires

42. ## AP physics 1

A 2.20kg toy plane takes off with an acceleration of 3.30m/s2 . The engine supplies a force of 8.15N . Determine the magnitude of drag force acting on the plane as it accelerates.

43. ## math

a dog starts chasing a cat when they are 12 meters. for every 7 meters that the dog runs, the cat runs 4 meters. how far does the dog have to run to catch up with the cat?

44. ## Physics

A certain p-channel JFET has a VGS(off) = +6V. What is ID when VGS = +8V?

45. ## Physics

A car initially traveling at 33.4 m/s undergoes a constant negative acceleration of magnitude 1.80 m/s2 after its brakes are applied. (a) How many revolutions does each tire make before the car comes to a stop, assuming the car does not skid and the tires

46. ## Help from The Economyst

I have put together my set of questions that I posted and answered them with yor help and direction, would you mind looking at the finished product for correctness. I still got lost on some of it I think. I could send them to you. EY Post them. We do not

47. ## Finance

Which of the following best states the difference between seed capital and startup capital? Seed capital is for research and planning while startup capital is for operating expenses. Seed capital is provided by venture capitalists while startup capital is

48. ## Managerial Econmics

Q4: Ch 5 (10%) In terms of the consumer theory set forth in this chapter, can you explain the meaning of the following statements? a. “I think you get more for your money from Nike than from Reebok.” b. “I wanted to buy a Boxster rather than a

49. ## AP Physics

A flywheel turns through 46 rev as it slows from an angular speed of 3.1 rad/s to a stop. Assuming a constant angular acceleration, find the time for it to come to rest? What is its angular acceleration (in rad/s^2) ? How much time is required for it to

Which of the following best states the difference between seed capital and startup capital? Seed capital is for research and planning while startup capital is for operating expenses. Seed capital is provided by venture capitalists while startup capital is

51. ## Pre-Algebra

You have \$60 in your wallet and want to buy some new CDs. If the CDs are \$11 each, what number of CDs, x, can you buy? Write and solve an inequality. Then explain your answer.

52. ## physics

Initially, a particle is moving at 5.30 m/s at an angle of 35.0° above the horizontal (+x axis). Two seconds later, its velocity is 5.97 m/s at an angle of 50.0° below the horizontal. What was the particle's average acceleration during this time

53. ## math

2 airplanes start at the same time from airports 500 km apart. Each flies with an airspeed of 200 km/hr toward the other airport. One reaches its airport half an hour before the other plane reaches the other airport. How fast is the wind blowing?

54. ## physics

Starting at rest at the edge of a swimming pool, a 72.0-kg athlete swims along the surface of the water and reaches a speed of 1.15 m/s by doing the work Wnc1 = +170 J. Find the nonconservative work, Wnc2 done by the water on the athlete.

55. ## University physics

"A droplet of oil carries an extra charge of one electron and is held motionless between parallel plates separated by 1.80 cm across which there is a potential difference of 55.5 kV. What is the mass of the droplet?" I assumed that this whole thing was

56. ## College Math

In a group of 200 high school students, 36 are taking biology, 52 are taking Spanish, and 126 are taking neither biology nor Spanish. If one of these 200 students is to be chosen at random, what is the probability that the student chosen is taking biology

57. ## Econ

The economy contains 2000 \$1 bills. a) If people hold all money as currency, what is the quantity of money? b) If people hold all money as demand deposits and banks maintian 100 % reserves, what is the quantity of money? c) If people hold equal amounts of

58. ## Algebra

Using the function f(X)=-3X+1 find f(2M+5)

59. ## Managerial Economics

I'm not sure I have the formulas correct for this problem and I do not know what the labor hours are.... Dimex Company, a sheet-metal mfg., estimates its long run production function is: 3 3 2 2 Q = -0.015625K L + 10K L where Q is the number of body panels

60. ## Economics, Marginal Utilities

Help Economyst.... 1) I think I get this one but maybe n not? Bridget has a limited income and comsumes only wine and cheese, her current consumption is four bottles of wine and 10 pounds of cheese. The price of the wine is \$10 per bottle and the price of

61. ## physics

The maximum gauge pressure in a hydraulic lift is 18 atm. What is the largest size vehicle (kg) it can lift if the diameter of the output line is 22 cm?

62. ## Chemistry

If calcium carbonate) and aluminum silicate are mixed together and heated then the result is cement. Cement is a mixture of calcium oxide, carbon dioxide, aluminum oxide, and calcium silicate. Write the balanced equation for this reaction. My Answer:

63. ## physics

A truck driver slams on the brakes and the momentum of the truck changes from ‹ 53000, 0, 0 › kg · m/s to ‹ 27000, 0, 0 › kg · m/s in 3.3 seconds due to a constant force of the road on the wheels of car. As a vector, write the net force exerted

64. ## math

If two dice are rolled one time, find the probability of getting a sum less than 5.

65. ## math 7/8 grd

d+s ˃ -3 d ˃ -7 find s it says the answer is 4 (s=4) but it seems not ok because depending on d the number can be pretty much anything

66. ## Math 7th gr

it is about bowling, your final score is 14 less than your friends, did you have a spare in the 10th round? 9th round 10th final friend 8 - 7 / 6 105 89 105 you 6 3 9 82 I don't know bowling, so it is a bit unfair.. the final should be 105-14=91 and since

67. ## algebra

Miranda worked two part-time jobs last week. The first job paid \$8 an hour, and the second job paid \$11 an hour. She worked a total of 23 hours last week and earned \$208. How many hours did Miranda work at the first job?

68. ## math 7/8 grd

d+s ˃ -3 d˃-7 find s the answer supposed to be 4, but I think it is not correct, because depending on d it might be pretty much anything.. any thoughts?

69. ## Chemistry

Methyl amine is a weak base with a pKb=3.35. Consider the titration of 30.0mL of .030M of Methyl amine with 0.025M HCl. a) Write the appropriate equation for the reaction. b) Calculate K for the reaction in part (a). c) Calculate pH of the initial methyl

70. ## social studies

What's the second most populous continent? Please check this site. Asia is the most populous. Which is the second most populous -- with 885 million people? http://www.nationsonline.org/oneworld/world_population.htm customs passed from parent to child is ?

71. ## Calculus

Solve the following equation on the interval [0,2pi) if sin = -0.29?

there are 4 possible scoring plays in an NFL football game (T) touch down -6 points (A) point after touchdown can only be earn with a touch down) - 1 point (F) field goal - 3 points (S) safety - 2 points 1. how many different ways could the team score 11

73. ## World history

Who benefited the least from the development of feudal systems? Explain why Japan China Africa Europe

74. ## physics

A room has the dimensions 3.0 m by 4.0 m by 4.0 m . The air in the room is 79% N2( MW= 28) and 21% O2 (MW = 32). At a temperature of 20 degrees Celsius and pressure of 115 kPa , what is the mass of the air in the room in kilograms?

75. ## Mangerial Economics

I am having problems figuring out how to set this problem up. Gamma Corporation, one of the firms that retains you as a financial analyst, is considering buying out Beta Corporation, a small manufacturing firm that is now barely operating at a profit. You

76. ## algebra

Delaney needs to rent a car while on vacation. The rental company charges \$17.95, plus 16 cents for each mile driven. If Delaney only has \$50 to spend on the car rental, what is the maximum number of miles she can drive?

77. ## Maths

A ball is thrown vertically upwards at 3 m s-1 from 1m above ground level (I) write down the equation for the height of the ball above the ground after t seconds (while the ball is in the air). (II) use your answer to find the time it takes the ball to

78. ## Managerial Economics

2)The manager of All City realtors wants to hire some real estate agents to specialize in selling housing units acquired by the Resolution Trust Commission (RTC) in its attempt to bail out the savings and loan industry. The commission paid by RTC to the

79. ## Expansion Path Economics

I've been trying to find a solution to this without much success. I am given the following....The production engineers at Impact Industries have derived the expansion path shown in the following figure. The price of labor is \$100 per unit. There is a graph

80. ## math 7 grd

you have to design a space station (model) that has a 120 cm3 volume, and it has to have the possible smallest surface area. it must contain 3 different shapes. (cone and sphere surface are was not covered, only their volume, so they are out....we can

81. ## World history

Who benefitted the least from the development of feudal system? Explain why Japan China Africa Europe

82. ## math

A random group of seniors was selected from a university and asked about their plans for the following year. The school advising office claims that 60% of the students plan to work, 30% of the students plan to continue in school, and 10% of the students

83. ## History

Washington's main objective as president of the united states was to: (1) set up a court similar to that of Eurpoean monarchs. (2) establish respect for the office of presidency. (3) keep peace between the northern and southern states. (4) maintain his

84. ## History

During the period of the Crusades, warfare between Christians and Muslims lasted nearly ? years 50 300 200 100

85. ## Managerial econ 1

1)The Midnight hour, a local nightclub, earned \$100,000 in accounting profit last year. This year the owner, who had invested \$ 1 million in the club, decided to close the club. What can you say about economic profit (and the rate of return)in the

86. ## Math

How to factor x^3 - 3x^2 + 4 =0 Use D'Alembert's Rational Roots Theorem. Any rational roots of the form of p/q (p and q assumed to be relatively prime) must be such that p divides the constant term (in this case 4) and q divides the coefficient of the

87. ## math

A brownie cake recipe requires 2 1/2 cup of sugar. The amount of flour needed is 1/2 cup more than twice the amount of sugar. How much flour is required?

88. ## math

Are the following statements and valid null and alternative hypotheses? (

89. ## chemistry

the volume of a gas was originally 2.5 L; it's pressurewas 104kpa and its temperatire was 270K. the volume of the gas expanded to 5.3 L and its pressure decreased to 95 kpa. What is the temperature of the gas?

90. ## Physics

Acceleration due to gravity is 9.81 m/s/s. What is the weight (in Newtons) of a 97.96 kg mass?

91. ## Math

Twice the square of a positive number increased by three times the number is 14. Find the number.

92. ## Physical Science

Predict the shift of equilibrium for each of the following conditions in the following reaction involving gaseous reactants and products: N2 + 3H2 = 2NH3 + heat A. the pressure is increased. b. the temperature is decreased.

93. ## Physical Science

Predict the shift of equilibrium for each of the following conditions in the following reaction involving gaseous reactants and products: N2 + 3H2 = 2NH3 + heat

A agrees to buy such fruits and vegetables as it "might desire" from B. Does this promise to buy obligate B in anyway?

95. ## math

A right-tailed test is used when .

96. ## Physics

A 3.50 kg mass, m, on a frictionless table is moving in a circle with radius 0.420 m at a constant speed. m is attached to a 6.40 kg mass, M, by a cord through a hole in the table. Find the speed with which m must move for M to stay at rest.

97. ## Calc

definite integral from 0 to 1 of 5xln(x+1)dx

98. ## physics

The earth orbits the sun once every 365.24 days. The distance between the earth and sun is 1.49x 10^8 Km. The mass of the earth is 5.96 x 10 ^24 kg. A) Find the magnitude in newtons of the centripetal force acting on the earth. The mass of mars is 6.56 x

99. ## PHYSICS

a 50 kg person running to the east at 8.5 m/s jumps into a 100 kg initially at rest. A)find the velocity of the wagon and person together as they move away.B) If they coast 30 m before coming to a stop, find the average force of the friction that slows