# find the derivative of y=(3x+1)^2 y= square root 13x^2-5x+8

97,722 questions, page 721
1. ## English

Here is my question. Can I end a sentence with the word (in)? Here is an example of my sentence with the word (in) at the end of my sentence. This alters the way we view lifespan development, as individuals truly never stop evolving and changing their own

asked by Sharon on October 18, 2014
2. ## Algebra

Two cars start at the same point at Alexandria, verginia, and travel 2 opposite directions. One car travels 5 miles per hour faster than the other car. After 4 hours, the two cars are 420 miles apart. Find the speed of each car.

asked by Lora on March 28, 2013
3. ## poisson distribution math

Mr Lee is planning to go fishing this weekend. Assuming that the number of fish caught per hour follows a Poisson distribution with mean 0.6, find the number of complete hours that Mr Lee needs to fish so that the probability of catching more than two fish

asked by Jazz on June 8, 2010
4. ## physic

An object with mass m1 = 5.00 kg, rests on a frictionless horizontal table and is connected to a cable that passes over a pulley and is then fastened to a hanging object with mass m2 = 10.0 kg, as shown in the figure below. Find the acceleration of each

asked by Chan on October 16, 2009
5. ## chemisty

what will be the mass of angydrous Alum left over if one starts with 100.00 g of hydrated Alum? please can you explain what fraction do I need to use. Based on the given information I can find the %theoretical of water in angydrous Alum. But I still don't

asked by Jay on October 21, 2010
6. ## Physics

An 8.74-kg block slides with an initial speed of 1.52 m/s down a ramp inclined at an angle of 27.0° with the horizontal. The coefficient of kinetic friction between the block and the ramp is 0.64. Use energy conservation to find the distance the block

asked by Jo on November 11, 2010
7. ## physics

need help with this question please a 1kg block starts at rest and slides down the incline. the coefficient of friction between the incline and the block is 0.1. The height of the incline is 2m, and the angle is 30 degrees. use energy consideration to find

asked by sammeh on November 15, 2009
8. ## math

hi! Im having trouble with this question about matrices the matrix X = (4 2) (2 4) X to the power of two = 2 (10 8 ) or ...(8 10) 4(5 4) ..(4 5) X to the power of three = 2 (56 52) ...(52 56) or 8 (14 13) .......(13 14) and so on... I have to figure out an

asked by garaj on April 7, 2007
9. ## maths --plse help me..

How many cubic centimeter of iron is required to construct an open box whose external dimensions are 36cm,25cm, and 16.5 cm provided the thickness of the iron is 1.5cm. If one cubic cm of iron weighs 7.5g find the weight of the box.

asked by Anamika on December 17, 2012
10. ## Chemistry

There's a test tube filled with a gas, and you bring a flame to the mouth of the tube. Many things could happen... The flame might get snuffed out and there might be a popping sound... so how can you find the density of that gas in relation to the air

asked by amaliyah on October 21, 2007
11. ## chemistryy

Most window cleaners are aqueous solutions of ammonia. A 9.00 mL sample of a particular window cleaner requires 42.95 mL of 0.0508 M HCl for its titration. What is the molarity of ammonia in the window cleaner? i am completely lost i cant even find the

asked by lyne on March 26, 2009
12. ## Math

A rectangle is 12in longer than it is wide. The perimeter is 68m. Write an equation and show steps to find its length and width. I need help figuring out what the equation would be. I found out that the length is 23 in and the width is 11 in, but I can't

asked by Anonymous on January 23, 2019
13. ## Can someone show me the right direction

Find the monthly payment for the loan. (Round your answer to the nearest cent.) Finance \$850,000 for a warehouse with a 11.50% 30-year loan. \$850,000x.1150 I don't know if I x or divide. the 30 year loan Thank you.

asked by Mary Ann on May 13, 2014
14. ## Algebra 1

algebra questions I don’t need any of the open a textbook answers. I have worked hard to get my algebra done but these last units have turned my mind into mush. I don’t just want answers I need an explanation. Any help would be wonderful Thank you 2)

asked by Elysian on May 15, 2015
15. ## physics lab

For a physics lab, I measured length, width, thickness, and mass of 2 blocks of wood, 3 trials each. There were 2 questions on the lab that I did not understand how to do. 1. For each trial, find the ratio between the mass and the volume. Based on your

asked by anonymous on September 1, 2006
16. ## linear algebra

Bob and Doug play a lot of Ping-Pong, but Doug is a much better player, and wins 80% of their games. To make up for this, if Doug wins a game he will spot Bob five points in their next game. If Doug wins again he will spot Bob ten points the next game, and

asked by jolia on December 7, 2014
17. ## math

A hot-air balloon, headed due east at an average speed of 15 miles per hour and at a constant altitude of 100 feet, passes over an intersection. Find an ex[ression for the distance d (measured in feet) from ballon to the intersection t seconds later. 1'000

asked by John on January 24, 2007
18. ## Music

I was wondering if someone could check out my music information site dontbflat and let me know what you think about it. Since I cant post the address here search google for dontbflat. It will find it. I'm trying to make the site helpful for kids and

asked by donbflat on July 31, 2006
19. ## African Amer. Study

Help me find websites for these Questions. What were the Goree contributions? What were the Senegambians contributions? What was the African Cuisine? What was the Gumbo? What were the Bozo contributions? What were the Cooter contributions? What were the

asked by Mack on October 24, 2007
20. ## science(chem)

Indicate the correct waste container for the following compounds choices are halogenated organic, nonhalogenated organic, aqueous, and organic solid a)hexane b)methylene chloride (dichloromethane) c)magnesium sulfate d)10% NaOH e)sodium hypochlorite for

asked by ~christina~ on September 2, 2007
21. ## physics

Rocket-powered sleds are used to test the responses of humans to acceleration. Starting from rest, one sled can reach a speed of 444 m/s in 1.80 s and can be brought to a stop again in 2.15 s. (b) Find the acceleration of the sled as it is braking and

asked by javane on November 26, 2010
22. ## UNCP

In a study of worker efficiency at Wong Laboratories it was found that the number of components assembled per hour by the average worker t hours after starting work could be modeled by the formula. Rewrite the formula by factoring the right-hand side

asked by casey on January 7, 2011
23. ## hum 130. info please

Welcome back Ms. Sue, I have to do a discussion, need two web sites dealing with indigenous cultures and/or religions. I have to discuss how modern civilization has impacted the spiritual lives of the indigenous peoples you explored. Are indigenous

asked by rose (Ms. Sue) on August 18, 2008
24. ## Physics

Two speakers driven in a phase by the same amplifier at a frequency of 640 Hz, are 7 m apart. A listener originally at the position of one of the speakers starts walking away from that speaker in a direction that is perpendicular to the line connecting the

asked by Anonymous on May 31, 2016
25. ## physics

A model airplane of mass 1.5 kg is attached to a horizontal string and ﬂies in a horizontal circle of radius 5.8 m, making 2 revolutions every 8 s. (The weight of the plane is balanced by the upward “lift” force of the air on the wings of the plane.)

asked by James on November 25, 2012
26. ## Calculus

A steady wind blows a kite due west. The kite's height above ground from horizontal position x = 0 to x = 60 ft is given by y = 150 − 1/40(x − 50)^2. Find the distance traveled by the kite. (Round your answer to one decimal place.) THe answer is

asked by Caroline on October 7, 2011
27. ## physics

Some sliding rocks approach the base of a hill with a speed of 18.0 . The hill rises at 41.0 above the horizontal and has coefficients of kinetic and static friction of 0.420 and 0.570, respectively, with these rocks. Start each part of your solution to

asked by Anonymous on October 2, 2012
28. ## physics

a very strong girl runs 200 miles for several hours. After a brief rest she runs another 100 miles north. She stops for the night at a local bed and breakfast and the next morning ealks 75 miles directly south-east. Find the magnitude and direction of her

asked by idk 22 on September 28, 2010
29. ## BIOLOGY

Hi, For my biology homework, I need to know some things about: red blood cells white blood cells (both types) platelets and I still cant find some info- -where they are made -length of life of cell Thanks! Jessica

asked by Jessica on October 17, 2006
30. ## American Govt

What are the four trends in the modern American political economy? Identify each and use evidence from the course to provide proof of each trend in practice. Then discuss the pros and cons of each trend. Are they healthy or unhealthy developments for the

asked by Anonymous on July 18, 2013
31. ## Physics

A model airplane of mass 0.9 kg is attached to a horizontal string and flies in a horizontal circle of radius 5.2 m, making 1.2 revolutions every 8 s. (The weight of the plane is balanced by the upward “lift” force of the air on the wings of the

asked by Aaron on December 21, 2010
32. ## Soxhlet extractor

Does anyone know what kindo of chemistry lab course(Organic, Physical, etc.) might use a soxhlet extractor in the experiments? Sheryl http://en.wikipedia.org/wiki/Soxhlet_extractor Certainly Organic It is used in organic chemistry. The URL provided by

asked by Sheryl on October 9, 2006
33. ## Physics

A model airplane of mass 0.9 kg is attached to a horizontal string and flies in a horizontal circle of radius 5.2 m, making 1.2 revolutions every 8 s. (The weight of the plane is balanced by the upward “lift” force of the air on the wings of the

asked by Aaron on December 21, 2010
34. ## physics

A model airplane of mass 0.7 kg is attached to a horizontal string and ﬂies in a horizontal circle of radius 5.6 m, making 1.6 revolutions every 7 s. (The weight of the plane is balanced by the upward “lift” force of the air on the wings of the

asked by tanya on December 10, 2011
35. ## Physics

A father pulls his son, whose mass is 26.7 kg and who is sitting on a swing with ropes of length 3.27 m, backward until the ropes make an angle of 35.6° with respect to the vertical. He then releases his son from rest. What is the speed of the son at the

asked by Charlie on October 21, 2014
36. ## Physics

For no apparent reason, a poodle is running at a constant speed of 5.80 m/s in a circle with radius 2.3 m. For t_delta = 0.5 s calculate the magnitude of the average acceleration a_av. I have no idea how to start this problem because I'm trying to use this

asked by Kyle on August 16, 2011
37. ## history

which belief was held by most Progressives? a. the government should own American industries b. Houseing and health care should remain private c. the government should protect agricultural interests d. the government should intervene in unfair business

asked by history on March 28, 2009
38. ## Physics

I was given a problem that has a triangle shape, which two sides should represent strings. The axial area that is rotating has an angle of 40 degrees. And it rotates by w (omega) = 1 Rad/Sec. I have to find tension of both the strings. How would I exactly

asked by Ailee on October 10, 2014
39. ## Physics

A brass lid screws tightly onto a glass jar at 20 oC. To help open the jar, it can be placed into a bath of hot water. After this treatment, the temperature of the lid and the jar are both 60 oC. The inside diameter of the lid is 8.0 cm at 20 oC. Find the

asked by Eric on September 20, 2010
40. ## math

Your local gas stations are having a price war. During the past 7 days they have lowered the price of regular gas by \$.02 each day. Define a variable. Then write and solve an equation to find the total change in gas price. Show your work. n-7x\$0.2 n-\$1.4

asked by Anna-Leah on November 20, 2018
41. ## Math 156

The systolic blood pressures of the patients at a hospital are normally distributed with a mean of 136 mm Hg and a standard deviation of 13.4 mm Hg. Find the two blood pressures having these properties: the mean is midway between them and 90% of all blood

asked by Emory on August 7, 2009

Bill has 30 coins, some nickels some dimes. They equal \$2.10. How many nickels are there? What is the equasion used to solve this problem? When I solve it, I get 4.3 nickels, but how can there be .3? Please help me solve I posted the two equations for this

asked by mary on December 17, 2006
43. ## physics

An extreme skier slides down an incline that forms an angle 24 degrees above the horizontal. The skier starts from rest and accelerates firmly at 4.00m/s^2 for a distance of 50.0m to the edge of a cliff. The cliff is 30.0m above the powdery snow below.

asked by jason on September 30, 2015
44. ## math

at the end of a soccer game season four families decide to buy the coach of gift certificate to a sporting goods store. each family contributes \$35 towards the gift certificate. write and solve a division equation to find how much the gift certificate is

asked by Angelina on April 21, 2015
45. ## Math! Helppppp

Two poles are place 15 feet apart. One pole is 8 ft high and the other pole is 16 ft high. The top of each pole is attached to the base of the other by cable which run in a straight line. -Find the slopes of the lines defined by the two ropes. -How high

asked by Kim on April 29, 2014
46. ## PHYSICS! -need help!-

A combination of an applied force and a frictional force produce a constant total torque of 38 N-m on a wheel rotating about a fixed axis. This combined force acts for 8 s, during which the wheel’s angular speed increases from 0 to 12 rad/s. Find the

asked by Randy on December 5, 2017
47. ## Physics

A brass lid screws tightly onto a glass jar at 20 oC. To help open the jar, it can be placed into a bath of hot water. After this treatment, the temperature of the lid and the jar are both 60 oC. The inside diameter of the lid is 8.0 cm at 20 oC. Find the

asked by Eric on September 20, 2010
48. ## physics

(a) a spherically shaped buoy is made from wood, which has a specific gravity of 0.6. find the acceleration of the buoy when released from rest at the bottom of a freshwater lake. (b) if the buoy starts out 10 m below the surface of the water, determine

asked by zoe on December 1, 2012
49. ## Language...Grammar

Can you tell me which one of these contains a prepositional Pharse? Thank You 1. With the proper help, they'll complete the project early. 2. Running all the way, he got there early. 3. They sang it, and sang it again. Thanks A lot. Only one of these

asked by Mandi on July 4, 2007
50. ## Calculus applications

A steel factory wishes to make a cylindrical container, of thin metal, to hold 100cm³, using the least possible area of metal. If the outside surface is S cm² and the radius is r cm, show that S = 2πr² + 200r-1 and hence find the required radius and

asked by Thomas on November 24, 2016
51. ## Physics

The potential energy of a particle on the x-axis is given by U+ 8xe ^-xsquared/19 where x is 1 meter and U is in Joules. Please find the point on the x-axis for which the potential is a maximum or minimum. I've worked it three times and I get these three

asked by Ahley on November 24, 2009
52. ## Physics

A small dipole of length l with an input current Io radiates an electromagnetic wave that is TEM respect r with an electric field given by: E = j*w*μ*(1/2)*(Io*l/(4*pi))*e^(-jkr)/r * sinθ Find the expression of the magnetic field, the Poynting vector,

asked by Waves - AEC on March 10, 2018
53. ## Chemistry

"How many grams of the precipitate will form if 25.5 mL of 4.5 M solution of lead (II) nitrate is allowed to react with 35.5 mL of 3.0 M solution of potassium chloride? What is the concentration of the excess reactant after the reaction has reached

asked by cj on February 9, 2017
54. ## math

a patrol boat took 2.5 hours for a round trip 12km upriver and 12km back. the speed of the current was 2 km/h. what was the speed of the boat in still water? ps: i just need to know how to make equations from the question above. it's supposed to create

asked by lawrence on October 15, 2010
55. ## physics

A 5.00 kg mass is connected by a light cord to a 3.00 kg mass on a smooth surface as shown in the figure. The pulley rotates about a frictionless axle and has a moment of inertia of 0.300 k∙m2 and a radius of 0.500 m. Assuming that the cord does not slip

asked by Anonymous on November 11, 2012
56. ## natural science

a fire fighter who weighs 800n climbs a uniform ladder and stops one third of the way up the ladder. the ladder is 5.0m long and weighs 180n. it rest against a vertical nail, making an angle of 53degree with the ground. find the normal and frictional

asked by john lloyd on October 10, 2015
57. ## CHEMISTRY: URGENT

30cm^3 of a mixture of methane and ethane were mixed with 100cm^3 of oxygen at ordinary temperature and pressure and exploded. After cooling the residual gases occupied 61.5cm^3. Find the percentage by volume of each gas in the mixture, methane (CH4) and

asked by LC on October 29, 2012
58. ## Language

In "All Together Now," Jordan uses appeals to emotion and appeals to reason to try to persuade her readers that her views are important. In a paragraph, cite one example of each kind of appeal in her work. Then, explain whether you find Jordan's appeals

asked by NOYB on December 9, 2016
59. ## math

A Ford Focus goes about 2 meters down the road for each revolution of its tires, which, when new, have treads about 1 centimeter thick. If it goes 80,000 km (50,000 mi) before its tread is gone, find the average thickness of tire lost durin each

asked by Sandy on September 11, 2012
60. ## Chemistry

Many homes in rural America are heated by propane gas, a compound that contains only carbon and hydrogen. Complete combustion of of a sample of propane produced 2.641 grams of carbon dioxide and 1.422 grams of water as the only products. Find the empirical

asked by Anonymous on August 16, 2010
61. ## calculus

A manufacturer produces bolts of fabric with a fixed width. The quantity q of this fabric (measured in yards) that is sold is a function of the selling price p (in dollars per yard), so we can write q = f(p).Then the total revenue earned with selling price

asked by Anonymous on October 16, 2009

Analyze and compare both data sets using the data analysis and biases concepts from Chapter 11 of Sekaran & Bougie (2010). Compare only those categories that you find are significant to your analysis in demonstrating whether the US demographics based

asked by Kim on September 8, 2012
63. ## applied maths

A tram starts from rest atone station and comes to a stop one minute later at the next. It accelerates uniformly at 2m/s2 until it reaches a speed of 20m/s. It travels at this constant speed for a certain time until it decelerates back to rest at 4m/s2.

asked by Anonymous on September 10, 2011
64. ## Algebra

Translate to a system of equations. DO NOT SOLVE. A nontoxic scouring powder is made up of 4 parts baking soda and 1 part vinegar. How much of each ingredient is needed for a 16-oz mixture? What are the two equations? For most problems, I can easily find

asked by Tessa on February 19, 2009
65. ## Math - Trigonometry

The diagonal of a rectangle of width 3.8, makes an angle of 32° 15' with each of the longer sides. Find the length of the diagonal, and the length of the rectangle. Im not sure how to picture/draw the shape, which in term will tell me if it is cos, sin or

asked by Anonymous on March 17, 2017
66. ## statistics

A source in the Internal Revenue Service has stated that historically 90% of federal tax returns filed are free of arithmetic errors. A random sample of 25 returns are selected and checked carefully for arithmetic errors. Assuming independence, find the

asked by Anonymous on August 29, 2012
67. ## PHYSICS HELP

1)An object is 2.40 mm high, is 8.6 cm to the left of a convex lens of 5.9 cm focal length. Find image location and height. 2) A dentist uses a small mirror of radius 42 mm to locate a cavity in a patient's tooth. If the mirror is concave and is held 18 mm

asked by Anonymous on October 4, 2017
68. ## Need some info. please

Everyone differs slightly in what they consider attractive or beautiful. Do you believe certain attributes are universally attractive? Do you believe one’s sense of beauty is intrinsic or learned? What influence do the media and one’s peers have on the

asked by rose - Ms. Sue on May 19, 2008
69. ## Math

Use systems of lineear equations to solve: An airplane flew for 6 hours with a 22-km/h tail wind. The return flight against the same wind took 8 hours. Find the speed of the plane in still air. I know the answer is 154 km/hr (back of book resources :)

asked by Annie on February 4, 2010
70. ## Calculus

Hello, I posted a question earlier but now I'm stuck on the second part of the question. Please help me. Sand is being dumped from a conveyor belt at a rate of 20 cubic ft/min into a pile the shape of an inverted cone whose diameter and height are always

asked by Nathaniel on November 28, 2011
71. ## math

For example, when I try to solve an equation like 1.096 = a^1000, what should I do? I'm trying to find a formula for this set of data and that's how I got the above equation: d=??? Elevation (ft) Sea level labeled h 1000 2000 3000 4000 Takeoff roll (ft)

asked by Natalie on August 30, 2015
72. ## PHYSICS 2

A 2.0 kg cylinder (radius = 0.08 m, length = 0.50 m) is released from rest at the top of a ramp and allowed to roll without slipping. The ramp is 0.77 m high and 5.0 m long. (b) What is its rotational kinetic energy? ? J (c) What is its translational

asked by kelsey on October 20, 2008
73. ## Physics

At what rate will a pendulum clock run on the Moon, where the acceleration due to gravity is 1.63 m/s2 , if it keeps time accurately on Earth? That is, find the time (in hours) it takes the clock’s hour hand to make one revolution on the Moon. provide

asked by Ellie on February 4, 2013
74. ## trig

A bicyclist is riding at 15 mph and her bike has wheels with a radius of 14 inches. She rides over a wad of gum which sticks in the tire. Assume this is t=0 seconds. a.)Find a function that gives the height in inches above the ground of the gum, with the

asked by matt on November 3, 2010
75. ## Language

I have one more question. I think the author of this book made a mistake on the next analogy. Take a look and see if you agree. Platyhelminthes:platypus a)plateau:platitude b)worm:marsupial c)mammal:science d)crystalline:canine I think the author

asked by Carson on October 26, 2011
76. ## Haley

Three circles with radii 35cm, 50cm, and 65cm respectively are tangent to each other externally. Find the angles of the triangle formed by joining the centers of the circles. My teacher said to use the cosine law cause you know 3 sides but no angles. But I

asked by Math on August 27, 2014
77. ## Math

Math Problem: Find the area of a circle that has a radius of 14 feet. Round your answer to the nearest hundredth. Would someone please check the way I worked this and let me know if I did it correct or not? Thank You A=3.14 (14ft)2 A=3.14 (196) A=615.44 Im

asked by John on April 26, 2013
78. ## Diploma Math

A small object travels with a velocity of v=4-t^2 where t is the time in seconds, recorded from t=0, and v is the velocity in metres/second. a) Draw a graph of v(t) for 0¡Üt¡Ü3. b)Find ¡Ò[0,3,(4-t^2),dt] c) Use a suitable geomentric method to

asked by sean de la Harpe on November 2, 2012
79. ## pre-cal... compound interest and modeling data

Please help me with these 2 problems! 1. Complete the table for the time t necessary for P dollars to triple if interest is compounded continuously at rate r. r= 2%, t=? r= 4%, t=? r= 6%. t=? r= 8%, t=? r= 10%, t=? r= 12%, t=? 2. Draw a scatter plot of the

asked by anonymous on December 11, 2007
80. ## physics

A rod of length L = 1.2 m pivots freely about one end. The rod is held horizontally and released, with no intial velocity. Find the angular velocity of the rod as it passes through the vertical orientation. (Use conservation of energy. The rotational

asked by Karan on December 12, 2012
81. ## Physics (Mechanics) - unanswered

An electron of mass 9.1E-31 kg is released from rest at a distance of 7.1 E-10 m from a fixed electron. The force on the movable electron is given by the function F = 2.3E-28/r^2, where r is the distance between the electrons. Find the maximum velocity (in

asked by andrew on April 13, 2012
82. ## Biology

Plz help me find these words for puzzle. the questions are related to bacteria. 1. Ability of pathogen to kill (8 letters) 2. Ability of an organism to cause disease (8 letters) 3. One of the conditions for bacterial growth (8 letters) 4. Cells with no

83. ## year 7 science

Chemical and physical changes. please could someone help me i need to say whether the following are chemical or physical changes and explain why. I`ve looked myself but i can`t find anything that helps. grateful for any help .thanks Frying an egg , burning

asked by choccy on April 29, 2008
84. ## Chemistry

I have a table that has the vapor pressure of water at selected temperatures. It is converted from celsius to torr. For example: 18°C = 15.5 torr 19°C = 16.5 torr Unfortunately, the temperature I got is 18.5°C. How do I convert it to torr? The book has

asked by Alan on March 30, 2007
85. ## Language

In "All Together Now", Jordan uses appeals to emotion and appeals to reason to try to persuade her readers that her views are important. In a paragraph, cite one example of each kind of appeal in her work. Then,explain whether you find Jordan's appeal

asked by JDog on November 15, 2016
86. ## chemistry

A student wanted to determine the density of an irregularly shaped piece of sodium metal. The student is warned not to use water displacement to find the volume of the piece of sodium. Explain the reason for the warning and offer an effective solution to

asked by Tay J. on December 16, 2011
87. ## math.

Mr. B walks for 4 hours at the rate of y miles an hour. He stops an hour for lunch and then returns to the starting point by a route that is twice as long, but he travels in an auto whose speed is five times that of his walking rate. Find the number of

asked by vincent on July 17, 2013
88. ## PHYSICS

2 pool balls of equal mass experience a perfectly elastic head on collision. 1 ball is traveling at 2m/s and the other at 3m/s in the opposite direction.What is thier speed just after impact? I know the balls swap speed and change direction but can't find

asked by mark on March 23, 2011
89. ## math

A charity fund-raiser consisted of a spaghetti dinner where a total of 387 people were fed. They charged \$6.80 for adults and children were half price. If they took in \$2444.60, find out how many adults and how many children attended the dinner. I have no

asked by Megan Brown on January 31, 2011
90. ## Art World Culture

1.)Inventors often work to find faster, more efficient ways of completing a task. How did Samuel F.B. Morse use his artistic ingenuity to create a more efficient telegraph machine? A.)by using higher quality wires B.)by using more wires and background

asked by #FreeGucci on May 18, 2016
91. ## Chemistry

I have some enthalpies of formation for a reactant and transition state but calculated using different computational methods. I want to find the ratio of the forward rate constants determined using both methods but I'm not really sure how. I thought I

asked by Alice on March 13, 2010
92. ## College math

7) A rectangular pen can be constructed using the side of a barn as one boundary and 5500 ft. of fence to make the other three sides. Find the length and width of the rectangle to make the largest area. Hint: Draw a picture- and label the sides of the

asked by Michala on July 20, 2014
93. ## Economics

Unable to find any info to answer my question I recently posted about.. role of economic theory in the way economics are run today & no clue found as to concrete examples of same...went through all your sites you suggested and looked many, many sites

asked by Joanne on July 27, 2011
94. ## surface area

Find the surface area of the cylinder in terms of pi. I know the formula is SA=LA+2B, but not sure how to plug in the numbers and get answers. Everytime I try I get wrong answer. The cylinder has I assume radius 8in and height 20in. possible answers

asked by lilman on April 30, 2012

Consider a system in which 3.60 mol of an ideal monatomic gas is expanded at a constant pressure of 101 kPa from an initial volume of 2.15 L to a final volume of 3.87 L. (b) Find the change in temperature for this process. ? K (c) Determine the amount of

asked by kelsey on December 14, 2008
96. ## M1, Mechanics

A particle of mass 4kg is suspended from a point A on a vertical wall by means of a light inextensible string of length 130cm.A horizontal force P, is applied to the particle so that it is held in equilibrium a distance of 50cm from the wall. Find the

asked by Tony on March 19, 2012
97. ## physics

A hiker begins a trip by first walking 25.0 km southeast from her base camp. On the 2nd day, she walks 40.0 km in a direction 600 north of east, at which point she discovers a forest rangers tower. Find the magnitude and direction of displacement from base

asked by rah on November 6, 2014
98. ## physics

A 44.8- child is standing on the outer edge of a merry-go-round that has moment of inertia 981 and radius 2.40 . The entire system is initially rotating at 0.180 . Find the angular velocity if the child moves to a final position 1.10 from the center of the

asked by Anonymous on September 30, 2012
99. ## Math

|Color | red | blue| green| yellow| | |__________________________________ | | # of times spun|20| 10| 9| 11| | |___________________________________| (A messy version of the table above) The table shows the results of spinning a four-colored spinner 50

asked by Anonymous on April 25, 2018
100. ## physics

1. A 100 lb body is pulled up an inclined plane making an angle of 37 degrees with the horizontal by the rope that passes over the pulley at the top of the plane and is fastened to a 70lb. weight. Neglecting the effect of friction, find the acceleration of

asked by pao on August 3, 2013