# Short answer find the quotient 6x^3-x^2-7x-9 ------------ 2x+3

143,010 questions, page 948
1. ## college physics helpasap

The water skier in the figure is at an angle of 35degree with respect to the center line of the boat, and is being pulled at a constant speed of 15m/s . 1)If the tension in the tow rope is 90.0N, how much work does the rope do on the skier in 30.0s ? 2)How

asked by JU on November 20, 2010
2. ## math

A tree, in danger of falling , stands 65 feet from the house. The angle of elevation from the bottom of the house to the top of the tree is 50 degrees. If the tree should fall directly towards the house, will it the house? show all work and explain your

asked by B8 on March 3, 2014

A 65 kg bungee jumper leaps from a bridge. She is tied to a bungee cord that is 11m long when unstretched, and falls a total of 30m . Part a) Calculate the spring constant of the bungee cord assuming Hooke's law applies. part b)Calculate the maximum

asked by emmie on May 24, 2012
4. ## statistics

1. When designing motorcycle helmets, the breadth of a person's head must be considered. Men have head breadths that are normally distributed with a mean of 6.0 inches and a standard deviation of 1.0 inches. If one male is randomly selected, what is the

asked by maczindahouse on February 27, 2019
5. ## Algebra2(check)

Would someone please check my answer for me? 1)The equation x2 + (y + 4)2 = 49 models the boundary on a local map for which Darren can hear his friend Tom on his two-way radio when Darren is at home. How far (in miles) can Tom walk from Darren's home and

asked by Anonymous on June 18, 2012
6. ## chemistry

In a reaction vessel, the following reaction was carried out using 0.250 mol of NH3 and 0.100 mol of N2, 4NH3(l) + N2 (g) = 3N2H4 (l) what is the compositon in moles in the vessel when the reaction is completed? Is the answer: 0 mol NH3, 0.063 mol N2, and

asked by Lisa on November 14, 2011
7. ## Chemistry

Fill in the blanks with a, b, c, or d. When comparing the strength of bonds between molecules, Ionic bonds have _______ bonds, and molecular bonds have _____ bonds? a. very strong, weaker b. weak, strong c. strong, very strong d. weak, very weak I think

asked by Mickeyv on July 8, 2008
8. ## Math

3(-5)squared -2/-5(2)/2 squared I don't get the second part but... any number squared is positive so 3(-5) squared is 3x25 if only (-5) is squared. If the whole thing is squared then multiply first, (3x-5) then squared the answer. Is the second

asked by Sam on September 25, 2006
9. ## physics

A clock has an aluminum pendulum with a period of 1.000 s at 20.3 °C. Suppose the clock is moved to a location where the average temperature is 28.1 °C. (The linear expansion coefficient for aluminum is 2.20 10-5 °C−1.) (a) Determine the new period of

asked by hania on April 5, 2012
10. ## Physics

Given the following about a spring: mass = 20.0 kg height initial = 5.25 m (above the ground) height final = 2.17 m (above the ground with the mass attached) delta y initial = 0.00 m There are several questions I must answer from this. 1. What is the value

asked by George on October 29, 2016
11. ## Physics: why is my answer wrong??

What effect does doubling the radius of the circle that an object travels have on its centripetal force, if everything else is constant? I think it should double centripetal force, but that is marked wrong, even though I used a test case. My test case was

asked by anonymous on September 28, 2017
12. ## Chemistry

A solution buffered at a pH of 5.00 is needed in an experiment. Can we use acetic acid and sodium acetate to make it? If so, how many moles of NaC2H3O2 must be added to a 1.0L of a solution that contains 1.0 mol HC2H3O2 to prepare the buffer. The Ka of

asked by Veronica on June 20, 2014

'A buffer is prepared by mixing a 100.omL of a 0.100 M NH3 solution with a 0.200M solution of NH4CL solution and making the total volume up to 1.000L of water. What is the volume of NH4Cl solution required to achieve a buffer at ph=9.5? Ka of

asked by jemima on December 11, 2012
14. ## social studies

how many children were separated from there parents or relatives during or after hurricane katrina As of September 8, 2006, 1220 children were still on the Hurricane Katrina missing persons list. This includes children that are either missing or simply

asked by jose on October 17, 2006
15. ## Chemistry

∆H⁰rxn, for the reaction of Ca(s) + 2H+(aq) -> Ca2+(aq) + H2(g) is -544 kJ/mol. ∆H⁰rxn, for the reaction of CaO(s) + 2H+(aq) -> Ca2+(aq) + H2O(l) is -193 kJ/mol. Based on these results, what is the ∆Hf for CaO(s) [in kJ/mol] if the heat of

asked by Luc on February 21, 2010
16. ## Physics

A chair of weight 75.0N lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of F = 45.0N directed at an angle of 40.0¡ã below the horizontal and the chair slides along the floor. Using Newton's laws, calculate

asked by Boxiang on March 3, 2015
17. ## physics

Two cars leave the same point at the same time, each travelling at the same constant speed of 89.0 km/h and each having the same mass. However, the first car drives directly east, while the second car heads directly south. At what speed (the magnitude of

asked by Anonymous on November 7, 2014
18. ## Algebra

2. The equation gives the distance, D, in miles that a person can see to the horizon from a height, h, in feet. a. Solve this equation for h. b. Long’s Peak in the Rocky Mountain National Park, is 14,255 feet in elevation. How far can you see to the

asked by shauna on April 18, 2009

If 10-kg of ice at 0 degrees Celsius is added to 2-kg of steam at 100 degrees Celsius, the temperature of the resulting mixture is? Use Joules. ANSWER: 40 Specific Heats: Ice = 2060 Steam = 2020 Latent Heats: Water melting = 3.33x10^5 Water boiling =

asked by Max on February 11, 2013
20. ## Science (1 question)

Question #1: A maglev train uses powerful magnets to lift the train above the tracks as it moved forward. Such a design reduces which of the following forces? a. rolling friction b. gravity c. air resistance d. fluid friction I think the answer is "b"

asked by Gourami on February 10, 2016
21. ## English

"Our two souls, therefore, which are one/ though I must go, endure not yet/A breach, but an expansion, Like gold to airy thinness beat." Donne is using irony to trivialize the love between him and his wife. Donne is using conceit to describe the love

asked by Steve on October 28, 2017
22. ## Social Studies

What is the answer I am freaking out, PLZ help!! Why did conflict arise between Henry II and Thomas Becket? A. Henry refused to appoint Becket as archbishop of England. B. Henry resisted the Norman invasion of England. C. Becket refused to recognize Henry

asked by Elizabeth on October 12, 2018
23. ## ALGEBRA HELP #1

The table below shows the fourth powers of different numbers: Number (x) 1 -1 2 -2 Fourth Power of the number (y) 1 1 16 16 Part A: Does the table represent y as a function of x? Justify your answer. (5 points) Part B: The total cost f(x), in dollars, for

asked by Tony K on August 11, 2017
24. ## physics

Two cars leave the same point at the same time, each travelling at the same constant speed of 89.0 km/h and each having the same mass. However, the first car drives directly east, while the second car heads directly south. At what speed (the magnitude of

asked by Anonymous on November 7, 2014
25. ## statistics

An experiment consists of rolling a die and selecting a marble from a bag. the bag has 7 orange, 3 pink, and 6 grey marbles. What is the probability of rolling a multiple of 3 and selecting a pink marble? Anwer: The two events are independent of each

asked by Jason on March 2, 2010
26. ## ALGEBRA

2. The equation D=2.2√ h gives the distance, D, in miles that a person can see to the horizon from a height, h, in feet. a. Solve this equation for h. b. If Long’s Peak in Rocky Mountain National Park, is 14,275 feet in elevation, how far can you see

27. ## Algebra again

I don't understand how to do this problems: Solve for the variable r, C=2PIr (PI is the pi symbol thing then r is next to it) and this problem solve for the variable l, S=B+1/2Pl I know this is the same question, but I somewhat understand how to get the

asked by Avalon on November 18, 2006
28. ## physics

A clock has an aluminum pendulum with a period of 1.000 s at 20.2 °C. Suppose the clock is moved to a location where the average temperature is 28.1 °C. (The linear expansion coefficient for aluminum is 2.20 10-5 °C−1.) (a) Determine the new period of

asked by Anonymous on April 6, 2012
29. ## Statistics

An experiment consists of rolling a die and selecting a marble from a bag. the bag has 7 orange, 3 pink, and 6 grey marbles. What is the probability of rolling a multiple of 3 and selecting a pink marble? Anwer: The two events are independent of each

30. ## physics

my physics teacher said that in simple harmonic motion of simple pendulum the direction of torque acting is opposite to angular displacement now i am wondering how ?as angular displacement is either anticlockwise or clockwise and torque direction is

asked by zoha on June 24, 2014
31. ## English

Which word pair is a set of antonyms? anxious,confident eager,excited worried,concerned depressed,sad Antonyms are words that mean the opposite of each other. Which pair is like that, do you think? http://www.thesaurus.com

asked by Brittany on November 29, 2006
32. ## History

I need help because I want to make certain I am right. The United States Constitution reserves to the States all powers not delegated to Congress or denied to the States, meaning that the States a. hold almost no power b. have little responsibility to the

asked by Pat on January 20, 2007
33. ## statistics

Determine the sample size needed in order to be 95 percent confident the p, the sample proportion of HD television sets that last at least five years without a single repair, is within 0.03 of , the true proportion of sets that last at least five years

asked by Sierra on November 28, 2011
34. ## physics help PLZ!!

What is the direction of the net external force on the crate (as an angle between −180◦ and 180◦ , measured from the positive x axis with counterclockwise positive)? Answer in units of ◦ Ive solved for the net external force in the x and y

asked by allan on December 4, 2014
35. ## statistics

Suppose scores on the mathematics section of the SAT follow a normal distribution with mean 540 and standard deviation 120. ACT math scores are normally distributed with a mean of 18 and a standard deviation of 8. What score on the ACT is equivalent to a

asked by Anonymous on September 16, 2013
36. ## Chemistry

Is my answer in 3 sig fig or 4 sig fig?? A solution is prepared by dissolving 12.80 g of magnesium chlorite in enough water to make 200.0 mL of stock solution. A 25.0 mL aliquot (portion) of this stock solution is then removed and added to 250.0 mL of

asked by Anonymous on October 20, 2013
37. ## physics

Two cars leave the same point at the same time, each travelling at the same constant speed of 89.0 km/h and each having the same mass. However, the first car drives directly east, while the second car heads directly south. At what speed (the magnitude of

asked by Anonymous on November 7, 2014
38. ## physics

Two cars leave the same point at the same time, each travelling at the same constant speed of 89.0 km/h and each having the same mass. However, the first car drives directly east, while the second car heads directly south. At what speed (the magnitude of

asked by Anonymous on November 7, 2014
39. ## art

What factor might motivate a museum to hastily restore art without considering whether or not the restoration good for the piece? A. a freshly-restored artwork will last longer B. a freshly-restored artwork is easier to display C. a freshly-restored

asked by anonymous on February 12, 2015
40. ## Social Studies (1 question)

Where do most people in Arabia and Iraq live? a. in the Fertile Crescent b. in the Rub' al-Khali c. in cities d. in and around Mecca I think the answer is "a" because people have clustered in the mountains of Iraw and Yemen, near the Tigris and Euphrates

asked by Gourami on February 11, 2016
41. ## AP Chem

Need help with this practice problem. I got the values for the gas to liquid and liquid to solid. Don't know how to do the rest? Heat of Vap and fusion too? No idea! What is the enthalpy change during the process in which 100.0 g of water at 50.0 C is

asked by Chemkid on February 23, 2013
42. ## AP Chem

Need help with this practice problem. I got the values for the gas to liquid and liquid to solid. Don't know how to do the rest? Heat of Vap and fusion too? No idea! What is the enthalpy change during the process in which 100.0 g of water at 50.0 C is

asked by Chemkid on February 23, 2013
43. ## physics

A mass, m1 = 5.5 kg, is in equilibrium while connected to a light spring of constant k = 132 N/m that is fastened to a wall (see a). A second mass, m2 = 10.9 kg, is slowly pushed up against mass m1, compressing the spring by the amount Ai = 0.17 m (see b).

asked by Anonymous on February 6, 2013
44. ## Chemistry

A student followed the procedure given in the lab exercise to determine the ascorbic acid content in a commercial vitamin C tablet. The students prepared the solution using a 0.460 g vitamin C tablet. The titration required 40.00 mL of the 0.005 M KIO3/KI

asked by R on November 22, 2016
45. ## Stats

A prototype from a hybrid vehicle manufacturer claims to get 50 miles per gallon (MPG). The manufacturer selects 14 prototypes from their fleet and drives the vehicles for fuel efficiency. The sample mean fuel efficiency for this sample was 53.3MPG and a

asked by Plzz help on November 6, 2016
46. ## Social Studies

Of the following statements, which best describes the changes in the economy and society after the war? A. The economy initially experienced a brief downturn but rebounded during the 1920s B. Racism decreased in the South becuae black and white sol6fouhgt

asked by Unicorn lover on April 9, 2019
47. ## physics

For its size, the common flea is one of the most accomplished jumpers in the animal world. A 2.30 mm -long, 0.540 mg critter can reach a height of 18.0 cm in a single leap. a) Neglecting air drag, what is the takeoff speed of such a flea? -i got 1.88m/s b)

asked by Anonymous on February 7, 2016
48. ## Physics

A grain bucket conveyor (grain leg) raises soybeans from the ground level up to the peak of its height, h= 150 ft. A bushel of soybean weight, W=60 lb/bu. The bucket elevator can deliver, Q= 120 bu/min, to the top spout. The motor shaft power to drive the

asked by Max on March 23, 2016
49. ## physics

A class of 11 students taking an exam has a power output per student of 122 W. Assume that the initial temperature of the room is 18.8oC and that its dimensions are 6.40 m by 14.5 m by 3.50 m. What is the temperature of the room at the end of 54.0 min if

50. ## engineering

1)A compressed high resolution chest xray image requires about 8MB of data. most GP surgeries are connected to the NHS network at a speed of 2Mbps. how long would it take to download a set of 6 images. give your answer to second to 2 decimal places. 2)as a

asked by rai on April 17, 2010
51. ## Economics

A supply curve does all of the following, except: Answer Uses the ceteris paribus assumption. Holds constant time, place, income, costs of inputs, costs of substitutes, and suppliers' expectations about future prices. Shows the quantity producers are

asked by Anonymous on November 17, 2013
52. ## Principles of Management - Strategic Management

please review my answers! 1. which of the following is an example of an internal stakeholder of an organization? A) distributors B) suppliers C) Unions D) Individual Workers It is: D) Individual Workers 2. Two drug companies agree to work together to pool

asked by Amanda on July 10, 2012
53. ## Geometry

In trapezoid $ABCD$, $\overline{AB}$ is parallel to $\overline{CD}$, $AB = 7$ units, and $CD = 10$ units. Segment $EF$ is drawn parallel to $\overline{AB}$ with $E$ lying on $\overline{AD}$ and $F$ lying on $\overline{BC}$. If $BF:FC = 3:4$, what is $EF$?

asked by William on May 6, 2017

4x^2+20x+5y+xy *you have to factor by grouping,for more information just ask me* First, take out 4x from the first two and y from the second: 4x(x+5) + y(x+5). Then combine the 4x and the y: (4x+y)(x+5). That's your answer. thanks. - can you help me with

asked by margie on January 23, 2007
55. ## Math

Please help me with this problem: A bourbon that is 51 proof is 25.5% alcohol by volume while one that is 82 proof is 41% alcohol. How many liters of 51 proof bourbon must be mixed with 1.0 L of 82 proof bourbon to produce a 66 proof bourbon? Give answer

asked by Lorie on April 5, 2013
56. ## math

To solve 3/4 divided by 2/5, Elisha writes, 3/4 divided by 2/5 is the same as 15/20 divided by 8/20. So the answer to 3/4 divided by 2/5 is the same as 15 divided by 8. Is Elisha's first claim, that 3/4 divided by 2/5 is the same as 15/20 divided by 8/20,

asked by anonymous on October 30, 2013
57. ## math

Mirette wants to plant bulbs in patterned rows in her garden. Each row will have 12 plants alternating in this pattern: red tulip, yellow tulip, yellow tulip, white tulip. If she plants 8 rows, how many bulbs of each color will she need? Please answer and

asked by Anonymous on January 14, 2013
58. ## physics

Two blocks of masses m1 = 4.00 kg and m2 = 3.00 kg are placed in contact with each other on a frictionless horizontal surface. A constant force F = 9.00 N is applied to the block of mass m1. a) Determine the magnitude of the acceleration of the two-block

asked by michael on February 11, 2012
59. ## Algebra

Krystal grilled 21 burgers at a block party. She grilled the same number of pounds of turkey burgers as hamburgers. Each turkey burger weighed 1/4 pounds and each hamburger weighed 1/3 pound. How many of each did Krystal grill? ~Please help me and provide

asked by Ella on January 19, 2012
60. ## Material Sciences

Imagine a container is removed from a hot oven and plunged into cold water. Use your answer from Question 3 to justify which material would be more likely to have better thermal shock resistance. Glass: α=9∗10−6C−1 Pyrex: α=4∗10−6C−1 Which

asked by qwerty on September 28, 2014
61. ## Algebra

Astronomers measure large distances in light-years. One light-year is the distance that light can travel in one year, or approximately 5.88*10^12 miles. Suppose a star is 3.2*10^12 light-years from Earth. In scientific notation, approximately how many

asked by Anonymous on April 12, 2017
62. ## Calculus

The temperature of a pan of hot water varies according to Newton's Law of Cooling: dT/dt=-k(T-A), where T is the water temperature, A is the room temperature, and k is a positive constant. If the water cools from 90°C to 85°C in 1 minute at a room

asked by nan on March 11, 2016

Mirette wants to plant bulbs in patterned rows in her garden. Each row will have 12 plants alternating in this pattern: red tulip, yellow tulip, yellow tulip, white tulip. If she plants 8 rows, how many bulbs of each color will she need? Please answer and

asked by Anonymous on January 14, 2013
64. ## physics

when a mass attached to a spring is released from rest 3.0 cm from its equilibrium position, it oscillates with a frequency f. If this mass were instead released from rest 6.0 cm from its equilibrium position, it would oscillate with frequency.. A.2f

asked by collegekid on November 16, 2009
65. ## Theology 10 (HELP!!!!)

At what times in your life have you found it easy to trust in God? What helped you? At what times in your life have you found it difficult to trust in God? What things hindered you. I'm NOT asking you to answer these questions for me but I'm having trouble

asked by Kim on September 10, 2014
66. ## Spanish

Which statement is accurate? A. Fútbol is more important that béisbol in all Spanish­speaking countries. B. Béisbol is more important than fútbol in México. C. Béisbol is more important than fútbol in Cuba, Puerto Rico, and la República

asked by Reed on December 19, 2017
67. ## Physics

A railroad car with a mass of 2.33 × 104 kg moving at 3.71 m/s collides and joins with two railroad cars already joined together, each with the same mass as the single car and initially moving in the same direction at 1.44 m/s.What is the final speed of

asked by Chris on January 19, 2015
68. ## math

i really need help, i have no idea how to answer this question ! A stone is thrown off a cliff. it reaches a maximum height of 30m after 2 seconds, then falls into the water below. it hits the water after 5 seconds a) how high above the water is the cliff

asked by melissa on May 15, 2011
69. ## criminal law

I am having a hard time understanding how to answer this question. Discuss whether or not a defense attorney and/or the defendant can address a grand jury and provide reasoning for why a defense attorney and/or the defendant would choose to attend or not

asked by kirsten on January 19, 2015
70. ## Marine science

Why is it beneficial that many predatory fish have larval and juvenile stages that feed at a low trophic level, while the adults feed at a tertiary or quaternary trophic level? My answer was that the larval and juvenile stages would get more energy but my

asked by Jack on July 29, 2009
71. ## Math

You have to use 3,500 calories to lose one pound. If you play Dance Dance Revolution you can burn 1,000 calories in an hour. How many hours would you have to play in order to lose one pound? Answer is 35 3500 divided by 1,000=35 please help Ms. Sue i think

asked by Juan on March 4, 2013
72. ## Calculus

The temperature of a pan of hot water varies according to Newton's Law of Cooling: dT/dt=-k(T-A), where T is the water temperature, A is the room temperature, and k is a positive constant. If the water cools from 90°C to 85°C in 1 minute at a room

asked by Una Rosa on March 12, 2016
73. ## planning & implementing for the environment

In acquiring equipment for a child care facility, you'll most likely A.have to purchase all of the equipment for your center. B. be able to acquire most of your equipment from free and inexpensive sources. C.purchase 90 percent of your equipment locally.

asked by Amanda on October 20, 2014
74. ## Language arts

1. Which of the following sentences uses the past perfect verb tense. A) By June, I will have owned the camera shop for a decade. B) After it was sold, I had owned the camera shop for 12 year as C) I cannot recall a time when I have not owned some kind of

asked by Tim on November 3, 2015
75. ## geometry

1) Make a conjecture about the next item in the sequence. 2, -20, 200, -2000, ? 2)Determine whether the following conjecture is true or false. Give a counterexample if the answer is false. __ __ AB ⊥ BC, then ∠ABC is a right angle 3)Make a conjecture

asked by roj on June 22, 2018
76. ## math

really need help, i have no idea how to answer this question ! A stone is thrown off a cliff. it reaches a maximum height of 30m after 2 seconds, then falls into the water below. it hits the water after 5 seconds a) how high above the water is the cliff (

asked by melissa on May 16, 2011
77. ## physics

The horizontal surface on which the block of mass 4 kg slides is frictionless. The force of 30N acts on the block in a horizontal direction and the force of 60N acts on the block at an angle. What is the magnitude of the resulting acceleration of the

asked by alexa on July 12, 2011
78. ## algebra

Solve the system by addition or substitution. 16x-4y=20 y=4x-4 I ask for help with this and forgot to add the problem. can anyone help me understand how to do this? 16x-4y=20 -4x+y=-4 ___________ 16x-4y=20 (4)(-4x+y=-4) ______________ 16x-4y=20 -16x+4y=-16

asked by struggling on May 26, 2007
79. ## Math

Here is the question that I need to answer: Mr.T wanted to remodel his box, He wanted to make it the shape of a perfect regular dimension. A.) How many total degrees would the interior of Mr.T's decagon have? SHOW WORK. B.)How many degrees would each angle

80. ## Chemistry

The distance to our nearest neighboring Star, is 4.4 light years. If there are 9.460x10^12 km in 1 light year, how far is this in miles? So this is how I solved: 9.460x10^12 km x 1mi/1.61km x5.878x10^12 miles/1 light year x4.4 light years My answer is

asked by Anonymous on September 28, 2011
81. ## Trig

From a point P on level ground, the angle of elevation of the top of a tower is 27°10'. From a point 23.0 meters closer to the tower and on the same line with P and the base of the tower, the angle of elevation of the top is 51°30'. Approximate the

asked by Bob on June 26, 2012
82. ## math

really need help, i have no idea how to answer this question ! A stone is thrown off a cliff. it reaches a maximum height of 30m after 2 seconds, then falls into the water below. it hits the water after 5 seconds a) how high above the water is the cliff (

asked by melissa on May 16, 2011
83. ## Chemistry

NCl3, SiCl4, AsCl3, SCl2, PCl3 order them in terms of increasing bond polarity NCl3

asked by Asher on May 31, 2015
84. ## Social Studies help!!!!

Which step in the process of a bill becoming a law, is NOT a "floor action"? A. A bill is referred to Senate committee B. The House and Senate reach a compromise on a bill. C. The Senate debates and passes its form of a bill. D. The House and Senate

asked by callie on November 20, 2014
85. ## physics

In the sketch, the small hydraulic piston has a diameter of 2.5cm cm . The large piston has a diameter of 6.4cm cm . For each newton of force applied to the small piston, how many newtons of force are exerted by the large piston? Express your answer using

asked by Phil on April 3, 2014
86. ## Chemistry

Which of the following accurately shows the correct terms for the two sides of a chemical equation, correctly placed to the left or to the right where they belong, and also shows the correct symbol that is written between them? Choose a,b,c, or d. ** I

asked by Mickeyv on July 8, 2008
87. ## AP Chemistry

A 1277 mL sample of nitrogen (N2) was collected by displacement of water at 24 degrees C under a total barometric pressure of 966 torr. What mass of dry nitrogen was collected? The vapor pressure of water at 24 degrees C is 22 torr. Answer in units of g

asked by Gabriella on February 16, 2014
88. ## chemistry

Write a balanced chemical equation for the reaction of solid magnesium with aqueous iron(II) chloride to form aqueous magnesium chloride and solid iron. (Type your answer using the format CO2 for CO2. Use the lowest possible coefficients.)

asked by robert nelson on October 9, 2012
89. ## physics

A railroad car with a mass of 2.35 × 104 kg moving at 3.90 m/s collides and joins with two railroad cars already joined together, each with the same mass as the single car and initially moving in the same direction at 1.25 m/s. a) What is the final speed

asked by Jacqueline on March 31, 2013
90. ## planning & implementing for the environment

In acquiring equipment for a child care facility, you'll most likely A. have to purchase all of the equipment for your center.B. be able to acquire most of your equipment from free and inexpensive sources. C.purchase 90 percent of your equipment locally.

asked by Amanda on October 15, 2014
91. ## Math

Sue left her home at 6 A.M. driving her car at the rate of 50 miles per hour. At 8 A.M. her brother Kevin drove after her along the same highway, traveling at the rate of 60 miles per hour, in how many hours did Kevin pass Sue? I got 10 hours but that is

asked by Samantha on July 24, 2018
92. ## Chemistry

You read a reversible reaction from left to right in the forward direction. This direction shows which of these occurring? a) the reactants forming a product b) the product decomposing to form reactants c) both a and b occurring d) b occurring, followed by

asked by Jennifer on December 8, 2014
93. ## Calculus

The temperature of a pan of hot water varies according to Newton's Law of Cooling: dT/dt= -k (T - A), where T is the water temperature, A is the room temperature, and k is a positive constant. If the water cools from 90°C to 85°C in 1 minute at a room

asked by Alice on February 28, 2019
94. ## Alegbra 1

Mrs. Gifford's class consists of 15 girls and 25 boys. On the first test the mean of the girlsâ€™ scores was 80 and the mean of the boyâ€™s scores was 70. What was the class mean? (Remember the class mean is not just averaging the two means) On

asked by Bill on December 15, 2017
95. ## geometry

A spherical scoop of ice cream has radious 1.25 inches. The scoop is placed on top of a cone with radious of 1 inch and height of 5 inches. Is the cone large enough to hold all the ice cream if it melts? Show your calculations and explain your answer.

asked by Piggy on March 2, 2012
96. ## Math

The systolic blood pressure of 18-year-old women is normally distributed with a mean of 120 mm Hg and a standard deviation of 12 mm Hg. What percentage of 18-year-old women have a systolic blood pressure that is within 3 standard deviations of the mean on

asked by angela on May 4, 2016
97. ## us history

I'm doing a mock trial defending Andrew Jackson being impeached. He is being indicted for violating states' rights in his dealings with South Carolina in the nullification crisis. I'm finding it extremely hard to find any info to form reasons to defend

asked by Michelle on November 6, 2010
98. ## thermodynamics

if a pump discharges 75 gpm of water whose specific weight is 61.5 lb/ft^3(g=31.95fps^2). find a) the mass flow rate in lb/min, and b) and total time required to fill a vertical cylinder tank 10ft in diameter and 12ft high.

asked by 18ms on December 8, 2012
99. ## applied physics

An object is thrown vertically up ward from the ground with initial velocity 1960cm/s Neglecting air resistance, find the maximum height reached and the total time taken to return to the straight point ,/using first order differential equations/

asked by Ermiyas Abas on November 16, 2016
100. ## Chemistry

Write an equation (chemical or ionic) and use oxidation numbers to find out what is being oxidized and what is being reduced. (a) aluminum + oxygen (b) magnesium + steam (c) iron + dilute hydrochloric (d) copper(ii) oxide + carbon (e) bromine + potassium

asked by Click6 on June 30, 2011