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

97,722 questions, page 742
1. ## Physic II

A flat disk 1.0 m in diameter is oriented so that the plane of the disk makes an angle of π/6 radians with a uniform electric field. If the field strength is 491.0 N/C, find the electric flux through the surface. Please show step by step

asked by John on February 2, 2014
2. ## algebra am i right

Find the volume of a right circular cylinder whose base has an area of 6 cm^2 and whose height is 17 cm. [A] 153ð cm^3 [B] 612ð cm^3 [C] 102 cm^3 [D] 153ð cm^2 [E] None of these i think its C Please show your work. That's the right answer, but we'd like

asked by cassii on September 27, 2006
3. ## algebra

Mrs Lee was given \$1200 every month for the household expenses.She used 17/24 of it to buy food for the family, 5/7 of the remainder for clothes and other expenses.She put the remaining money into the bank as savings for the family.Find the amount she put

asked by MTH on February 7, 2008
4. ## Chem

Balance the chemical equation given below, and determine the number of grams of MgO needed to produce 15.0 g of Fe2O3. _MgO(s)+_Fe(s)->_Fe2O3(s)+_Mg(s) 1. a. 11.4 g 2. b. 3.78 g 3. c. 1.26 g 4. d. 0.0877 g I got equation balanced 3,2,1,3 just having

asked by Mark on April 24, 2010
5. ## PRE-CALC

A large painting in the style of Rubens is 3 feet longer than it is wide. If the wooden frame is 12 in wide and the area of the picture frame is 208 ft^2, find the dimensions of the painting. So I know the width would be x and the length would be x+3 if I

asked by Muffy on October 16, 2009
6. ## Statistics

Assume that the mean systolic blood pressure of normal adults is 120 millimeters of mercury (mm Hg) and the standard deviation is 5.6. Assume the variable is normally distributed. If an individual is selected, find the probability that the individual's

asked by Anonymous on February 12, 2017
7. ## Algebra

The path of a football thrown by a quarterback can be modeled be the equation y=-0.04x^2+4x+5 where x is the horizontal distance in feet and y is the corresponding height in feet.find the interval on which the height is increasing.what is the average rate

asked by Anonymous on April 27, 2017
8. ## Math

Fernando surveyed a group of people to find their shoe size and the number of children in their family. He graphed the ordered pairs (shoe size, number of children) for each person. Which of the scatter plots most likely represents his graph?

asked by Curly Cue on May 31, 2018
9. ## statistics

Can someone help me with this questions. Find the variance for a given data. Rpund your answer to one more decimal place then the original data. Compute the variance. Jeanne is currently taking college zoology. The instructor often gives quizzes. On the

asked by natalie on August 28, 2007
10. ## Physics

you lift a 10 N physics book up in the air a distance of 1m at a constant velocity of .5m/s. What is the work done by the weight of the book? a) +10 J b)-10 J c) +5 J d)-5 J 10 N is the force of gravity and to find work you do this: W=F_g(change in

asked by Tammy on October 10, 2007
11. ## Probability

Let X be a random variable that takes non-zero values in [1,∞), with a PDF of the form fX(x)=⎧⎩⎨cx3,0,if x≥1,otherwise. Let U be a uniform random variable on [0,2]. Assume that X and U are independent. What is the value of the constant c? c= -

asked by qwerty on April 21, 2015
12. ## physics

Two conductors are made of the same material and have the same length. They each have circular cross sectional areas. The ratio of their radii is 2:1. they carry the same current. What is the ratio of the electrical potential across their lengths? i know

asked by bobby on April 22, 2009
13. ## college

Electric fields are vector quantities whose magnitudes are measured in units of volts/meter (V/m). Find the resultant electric field when there are two fields, E1 and E2, where E1 is directed vertically upward and has magnitude 96 V/m and E2 is directed

asked by Anonymous on April 28, 2010
14. ## math

The number of streetlights in a town is growing linearly. Four months ago (n = 0) there were 130 lights. Now (n = 4) there are 146 lights. If this trend continues, a. Find an explicit formula for the number of lights in month n b. How many months will it

asked by Anonymous on July 17, 2012
15. ## statistiss

The annual Salary of an electrical engineer is given in terms of the years of experience by the table below. Find the equation of linear regression for the above data and obtain the expected salary for an engineer with 48 years of experience. Round to the

asked by john on June 17, 2010
16. ## Trigonometry

A satellite orbiting the earth in a circular path stays at a constant altitude of 100 kilometers throughout its orbit. Given that the radius of the earth is 6370 kilometers, find the distance that the satellite travels in completing 70% of one complete

asked by Karen on December 3, 2012
17. ## PHYSICS

Ana run in a circular path. The dimension of the circular path is r = 10m , she finished it in 20 seconds. Find his speed, distance, displacement and velocity. 10m east (starting point) and 10 m south (finish point)

asked by SUZI on July 23, 2014
18. ## statistics

20. Supply and Demand Let the supply and demand functions for butter pecan ice cream be given by p=s (q) = 2/5q and p= d (q) = 100 – 2/5 q where p is the price in dollars and q is the number of 10- gallon tubs. a. Graph these on the same axes. b. Find

asked by Sean on November 5, 2010
19. ## College Algebra

Jim wants to build a rectangular parking lot along a busy street but only has 2,700 feet of fencing available. If no fencing is required along the​ street, find the maximum area of the parking lot. I got the answer 911.25 which was incorrect I'm not sure

asked by Angelica on March 4, 2017
20. ## Physics!

HELP!!! A box rest on an incline making a 34 angle with the horizontal. It is found that a parallel force to the incline of at least 240 N can prevent the box from sliding down the incline. If the weight of the box is 800 N, find the coefficient of static

asked by Randy on October 7, 2017
21. ## Calculus

Suppose that a population of bacteria triples every hour and starts with 700 bacteria. (a) Find an expression for the number n of bacteria after t hours. n(t) = ? (b) Estimate the rate of growth of the bacteria population after 1.5 hours. (Round your

asked by Alex on November 3, 2009
22. ## Math

Find angle A if it is greater than or equal to 0 degrees and smaller than or equal to 180 degrees. round to the nearest tenth of a degree, if necessary. a) sinA = 0.5 b) cosA = -0.5 e) cosA = 0.4561 g) sinA = 0.5736 PLEASE HELP WID THIS!!:( i tried so

asked by Jiskha lover:D on December 18, 2012
23. ## Algebra

A group of people are tubing down a river at an average speed of mi/h. Write a direct variation equation that gives the number of miles y that the people will float in x hours. Graph the equation and use the graph to find the distance traveled in 2.5

asked by Cairo on September 25, 2017
24. ## physics

a car moving on a straight road with a speed of 20m/s. at t=0 the driver of the car applies the breaks after watching an obstacle 150m ahead. after application of breaks, the car retards with 2m/s^2. find the position of the car from the obstacle at t=15s.

asked by pavatharani on July 3, 2011

1) A force vector has a magnitude of 579 newtons and points at an angle 43o of below the positive x axis. Find the x scalar component and the y scalar component of the vector? For the x component I did 579cos(43) = 423.45 N. Is this correct? For the y

asked by Hannah on May 25, 2012
26. ## Geometry

A museum was designed without windows, but a truncated cylindrical skylight lightens the building. In the development of this, the architect has areas where the angles formed at junctures are vertical angles. If a pair of vertical angles measures 5x - 54

asked by Chris on October 31, 2012
27. ## math

A tennis ball is dropped from a height of 7 ft. If the ball rebounds 2/3 of its height on each bounce, how far will the ball travel before coming to rest? (Find the total distance that the ball will travel before it stops bouncing.) i need help i don't

asked by gisela on September 29, 2014
28. ## PreCalc - Sequence

A ball is dropped from a height of 20 ft and always rebounds 1/4 of the distance fallen. A. write a sequence for the first 3 rebound heights B. How high is the 6th rebound? C. Find the sum of all possible rebounds. I keep getting numbers that are too high.

asked by Joe on July 27, 2011
29. ## Geometry

Find x in terms of y e-zgeometry. com/pow/pictures/25.gif It would be helpful if the verticies had letters at the site you left: http://www.e-zgeometry.com/pow/pictures/25.gif The two smaller triangles are similar to the larger one (the altitude y)

asked by Seth on January 30, 2007
30. ## Math

A rectangular ﬁeld is to be fenced in on four sides with a fifth piece of fencing placed Parallel to one of the shorter sides, so that the ﬁeld is split in two parts. If 1600 m of fencing is available, ﬁnd the largest possible area for this

asked by Alex on June 12, 2018
31. ## Math

The bases of trapezoid ABCD are AB and CD. Let P be the intersection of diagonals AC and BD. If the areas of triangles ABP and CDP are 8 and 18, respectively, then find the area of trapezoid ABCD. I'm so confused... please help! I was thinking that if I

asked by Geometry HELP on November 29, 2015
32. ## Math OPTIMIZATION

A home gardener plans to enclose two rectangular gardens with fencing. The dimensions of the garden: x by 12-x, y by 12-x-y a. Find the values of x and y that maximize the total area enclosed. b. What is the maximum total area enclosed? c. How many meters

asked by Willoby on September 3, 2011
33. ## physics

A bucket of mass 2.20 kg is whirled in a vertical circle of radius 1.15 m. At the lowest point of its motion the tension in the rope supporting the bucket is 28.0 N. a) Find the speed of the bucket. b)How fast must the bucket move at the top of the circle

asked by jess on November 4, 2010
34. ## statistics

calculate the correlation for data set A. Data Set A: xi = 65, 55, 50, 45, 35 yi= 44, 52, 68, 20, 36 I know how to find the mean, variance, standard deviation, and z-score. The part I am having trouble finding is the ZxiZyi. In the chart that I have to

asked by Hannah on July 6, 2011
35. ## Chemistry

Find the entropy change of the universe when 2 moles of water freezes at -10 degrees celsius. The delta G for the freezing of water at -10 degrees celsius is -210 J/mol and the heat of fusion of ice at this temperature is 5610 J/mol.

asked by Linda on April 21, 2013
36. ## math

The annual Salary of an electrical engineer is given in terms of the years of experience by the table below. Find the equation of linear regression for the above data and obtain the expected salary for an engineer with 45 years of experience. Round to the

asked by molly on June 19, 2010
37. ## math

Suppose the mean length of time that a caller is placed on hold when telephoning a customer service center is 23.8 seconds, with standard deviation 4.6 seconds. Find the probability that the mean length of time on hold in a sample of 1,200 calls will be

asked by daniel on February 21, 2019
38. ## Physics

A 25 kg box is along a horizontal floor and a force of 400 N pushes the box with an angle of 50 deg with the horizontal. Starting from rest, the box achieves a velocity of 2 m/s in a time of 4 seconds. Find the coefficient of sliding friction between box

asked by JOSH on August 22, 2014
39. ## physics

an object is placed 15 cm in front of a convex lens of focal length 10cm. Find the nature and position of the image formed. where should a concave mirror of radius of curvature 20cm be placed so that the final image is formed at the position of the object

asked by meenakshi on March 9, 2015
40. ## Math

Find a formula and graph the function: A ferris wheel is 20 meters in diameter and boarded in the six oclock position from a platform that is 4 meters above the ground. The wheel completes one full revolution every 2 minutes. At t=0 you are in the twelve

asked by Alex on September 5, 2011
41. ## Physics

A skater with an initial speed of 7.6 m/s is gliding across the ice. Air resistance is negligible. The coefficient of kinetic friction between the ice and the blades is 0.1. a) Find the acceleration caused by kinetic friction and b) how far will the skater

asked by Samantha on October 22, 2009
42. ## math

PROCESSING CLAIMS. Joe takes x hours on the average to process a claim. whereas Ellen's average is 1 hour longer. a) write a rational function C(x) that gives the number of claims that they process while working for an 8-hour shift. b) Find C(c)

asked by mohamed on April 5, 2013
43. ## Physics

Two blocks M1 and M2 are connected by a massless string that passes over a massless pulley as shown in the figure. M1 has a mass of 8.25 kg and rests on an incline of 73.5°. M2 rests on an incline of 15.5°. Find the mass of block M2 so that the system is

asked by meg on October 14, 2015
44. ## physics

one can determine a persons center of mass by having them recline on a plank resting on two scales. A person 2m tall lies on such a plank and the scale near her head reads 405 N and the one near her feet reads 360 N. Find the center of her mass.

asked by Michelle on May 2, 2014
45. ## trig

A bird at the top of a tree looks down on a field mouse at an angle of depression of 65°. If the field mouse is 30 meters from the base of the tree, find the vertical distance from the ground to the bird’s eyes. Round the answer to the nearest tenth.

asked by Anonymous on September 18, 2014
46. ## Statistics

I am having trouble with the following problem: P(Z > +1.34) Would someone help me? If you've already normalized the number you're interested in, then look up in your tables (the normal distribution tables) to find 1.34 standard deviations and look for the

asked by Wendy on October 19, 2006
47. ## Science , Biology

Cretaceous extinction... The evidence tells you that “overwhelming evidence suggests that the extinction was caused by a 10-km-diameter asteroid that struck Earth.” Suggest at least three lines of evidence that might have led scientists to this

asked by Woo on November 27, 2016
48. ## calculus

Me again. One last question! Again, just needed my answer verified with any explanation or walk-through. The position of a particle moving along a coordinate line is s=√(3+6t) with s in meters and t in seconds. find the particle's acceleration at t=1

asked by kailey on November 24, 2014
49. ## algebra

Suppose you work in a clothing store. Each week you earn \$250 plus a commission equal to 2.5% of your sales. This week your goal is to earn no less than \$350. Write and solve an inequality to find the amount of sales you must have to reach your goal.

asked by shan on November 2, 2011
50. ## statistic

. The average time a student spends studying just prior to a test is 36 minutes with a standard deviation of 7 minutes. This distribution approximates a normal curve. Find the percent of students who study just prior to the test for. a) more than 60

51. ## Science

"current or proposed methods for implementing nuclear power plants" I'm researching different things about nuclear power and this is the next category. I'm not quite sure what it means, please let me know. Also, I need three pieces of info. to go under

asked by Ashley on December 10, 2009
52. ## physics

a metal object is suspended from a spring balance scale. the scale reads 800 N when it is suspended in air and 700 N when the object is completely submerged in water. find the buoyant force, the volume and the density of the metal.

asked by ryan on February 3, 2015
53. ## physics

A 2 kg block situated on a rough incline surface (θ= 37o) and is connected to a spring with k = 100 N/m. The block initially at rest. The block moves 20 cm down the incline before stops. Find the coefficient of friction between the block and the surface.

asked by charley on September 6, 2012

Victoria has 2 pounds of flour, she uses 2/5 for pizza and 3/10 for bread. Find the weight of the pack of flour that is left..Express in decimal answer. 32 ounces of flour is what she has she uses 2/5 x32=64/5=12and4/5=12.8-32=19.2remaining flour she then

asked by mary on November 21, 2015
55. ## Math

Shaahikala needs Rs.7000 after 15 weeks to send her daughter to school. She saved Rs.150 in the 1st week and raises by Rs.50 every succeeding week. Find whether she will be able to send her to school after 15 weeks? What value is created by the above

asked by Megha on March 18, 2016
56. ## english

can someone help me with this question?At several points in Sherman Alexie's "Indian Education" essay, Alexie uses comparison and contrast. Locate at least two examples and explain what each contributes to the essay? I just don't see a point of comparison

asked by kayla on February 7, 2009
57. ## satistics

The average time a student spends studying just prior to a test is 36 minutes with a standard deviation of 5 minutes. This distribution approximates a normal curve. Find the percent of students who study just prior to the test for. a) more than 40 minutes

58. ## Physics

Does anybody know the critical density for nuclear fusion within the disk of the solar nebula? This is related to the formation of the solar system. I guess this value should be the minimum density of hydrogen in the nebula that initiates nuclear fission,

asked by Kid on March 15, 2018

I am confused about this question, and can't find anything on the internet, anyone care to explain? Why is the tertiary structure of an enzyme, such as amylase, so important? An enzyme is a protein, so is it really asking why is this stage important? And

asked by MileyCyrus on February 17, 2008
60. ## math

Dirk Nowitzki of the Dallas Mavericks has a 87.7% career free throw record. Assuming that free throws represent independent events, find the probability of Nowitzki a. Getting 3 free shots in a row b. Missing exactly one of 3 free shots

asked by anonymous on July 11, 2011
61. ## physics

A 2.1 multiplied by 103-kg car starts from rest at the top of a 5.8-m-long driveway that is inclined at 22° with the horizontal. If an average friction force of 4.0 multiplied by 103 N impedes the motion, find the speed of the car at the bottom of the

asked by Anonymous on September 30, 2013
62. ## Physics

A bucket of mass 2.20 kg is whirled in a vertical circle of radius 1.40 m. At the lowest point of its motion the tension in the rope supporting the bucket is 30.0 N. Find the speed of the bucket. How fast must the bucket move at the top of the circle so

asked by Lilly on October 23, 2011
63. ## Physics

To move a large crate across a rough floor, you push on it with a force F at an angle of 21° below the horizontal, as shown in the figure. Find the force necessary to start the crate moving, given that the mass of the crate is m = 36 kg and the

asked by Gia on October 27, 2012
64. ## Difracction problem

Diffraction from an unknown cubic metal is observed to occur at the following values of θ when using CuKα radiation. Determine the crystal structure to find the lattice constant. 20.1⁰, 29.2⁰, 36.6⁰, 43.5⁰, 50.2⁰, 57.4⁰, 65.5⁰ a) What is

asked by Eys on June 2, 2013
65. ## Chemistry

Calculate the work, in kJ, done when 126 g of tin dissolves in excess acid at 25.0˚C and 1.00 atm. Assume Ideal Gas behavior. Sn(s) + 2 H+(aq) → Sn2+(aq) + H2(g) I basically need to know how to find the change in volume since work=-pressure*volume

asked by Carol on November 2, 2015
66. ## differential calculus

ADIABATIC EXPANSION when a certain polyatomic gas undergoes adiabatic expansion,its pressure p and volume V satisfy the equation pV^1.3 =k,where k is constant.Find the relationship between the related rates dp/dt and dV/dt. this is a problem of related

asked by =) on September 16, 2014
67. ## Physics

A small bug is placed between two masses (m1>m2) on a frictionless table. A horizontal force F is applied to either m1 or to m2, as shown. 1) In which case does the bug have a better chance of survival? HINT: Find the force of contact between the blocks in

asked by Anonymous on October 3, 2016
68. ## Physics

A 125-kg sled is dragged by a team of dogs a distance of 2 km over a horizontal surface at a constant velocity. If the coefficient of friction between the sled and the snow is 0.15, find (a) the work done by the team of dogs and (b) the energy lost due to

asked by John on June 24, 2012
69. ## Statistics

A local fire station receives an average of 0.5 rescue calls per day. Find the probability that on a randomly selected day, the fire station will receive fewer than two calls. (Round your answer to the nearest thousandth.)

asked by Me on July 13, 2012
70. ## physics

An aircraft flying at a horizontally height of 8000m above the ground at 200 metre per second drops a bomb on it's target on the ground. Find the angle between the vertical and the line joining the aircraft and the target immediately the bomb is released.

asked by ali on July 12, 2016
71. ## Algebra I

...excess information.... The historical society tells him that furniture similar to his has been appreciating in value at 10% per year for the last 20 years and that his furniture could be worth \$10,000 now. Is my expression 10,000(1+.1)^x? If so, I have

asked by Cat on March 9, 2009
72. ## Math Help Respond To @Steve

So for this question: The number of bacteria present in a culture is given by the following model B=1000e^0.276t; where t= time in minutes. Find the time required to have 6000 bacteria present. Then, round your answer to the nearest tenth of a minute;

asked by Micki on November 14, 2014
73. ## math

A function machine accepts inputs as ordered pairs. The Components of the order pairs are natural numbers and the first components is the length of the rectangle and the second componet is the width . The given machine computs the perimeter. Find the out

asked by EMMA on November 13, 2014
74. ## math

You are playing volleyball. You hit the volleyball with an initial vertical velocity of 15 feet per second when it is 4 feet above the ground. Find how many seconds it takes to reach the maximum height, the maximum height reached, and the time the object

asked by stefani on August 31, 2013
75. ## Physics

A gun of mass 0.1kg has a bullet of mass 0.1kg,the bullet laves the piston when fired at a velocity of 200m/s. Find the final velocity. (a) 20m/s (b) 23m/s (c) 30m/s (d) 45m/s (e) 15 m/s Please kindly help me with the questions I posted. Thank you

asked by Anonymous on August 5, 2017
76. ## probability and statistics

The annual Salary of an electrical engineer is given in terms of the years of experience by the table below. Find the equation of linear regression for the above data and obtain the expected salary for an engineer with 48 years of experience. Round to the

asked by Rhanda on April 26, 2010
77. ## geometry

The trapezoids are similar. The area of the smaller trapezoid is 564m^2. Find the area of the larger trapezoid to the nearest whole number. The smaaler trapezoid is 24m, and the larger trapezoid is 57m. Possible answers: 576m^2--3,249m^2--3,181m^2--14m^2

asked by kevin on April 8, 2012
78. ## english

My teacher is giving our classroom books and our assignment is to the find the time period of the book. My book is Death of the Sales man and it was created on 1949, so the time period would be that it was created during World War 2, Berlin Airlift?

asked by question on December 31, 2017
79. ## Math-Calculus

Please Help D:. Min/Max Problems 4. Joan has 50ft of interlocking stone available of fencing off a flower garden in the form of a circular sector. Find the radius of the circle that will yield a flower garden with the largest are if Joan uses all the

asked by Cara on March 6, 2013
80. ## statistics

Us travel data center survey of 1500 adults found that 42% of respondents stated that they favor historical sites. Find the 95% confidence interval of the true proportion of all adults who favor visiting historical sites.

asked by ann on March 25, 2013
81. ## Physics

An object moving with uniform acceleration has a velocity of 13.0 cm/s in the positive x-direction when its x-coordinate is 2.73 cm. If its x-coordinate 2.95 s later is −5.00 cm, what is its acceleration? cm/s^2 Express the position of the object in

asked by Ken on March 21, 2018
82. ## probability and statistics

The annual Salary of an electrical engineer is given in terms of the years of experience by the table below. Find the equation of linear regression for the above data and obtain the expected salary for an engineer with 48 years of experience. Round to the

asked by Rhanda on April 26, 2010
83. ## physics

An aircraft flying at a horizontally height of 8000m above the ground at 200 metre per second drops a bomb on it's target on the ground. Find the angle between the vertical and the line joining the aircraft and the target immediately the bomb is released.

asked by ali on July 12, 2016
84. ## COM/220

I need a little help..I have to find a good argumentative thesis statement. My goal is to prove that cyber-bullying is worse than regular bullying. I have tried several different times to come up with a good statement that is argumentative but to no avail

asked by Katherine on April 16, 2010
85. ## chemistry

What mass in grams of potassium hydroxide is contained in 500 mL of solution that has a pH of 11.5? I have a pOH of 2.5 to get [OH] I do 10^-2.5 to get 0.001581138 Then I divide this by 2 to find the mols in 500 mL Then, grams = mols x molar mass =

asked by Dustin on April 7, 2008
86. ## statistics

Suppose you have information that the average stress score of students in online activities is 13.15. Using Minitab, compute a one sample t-test to find out whether the stress scores reported by your sample are significantly different from those of the

asked by joy on February 19, 2014
87. ## pROBABILITY AND STATISTIC..HELP...................

a missile protection system consists of n radar sets operating independently each with probability .9 of defecting an aircraft entering a specified zone.all radar sets cover the same zone.if an airplane enters the same, find the probability that it will be

asked by Rrjey on February 26, 2013
88. ## guidance and dicipline

ms wigg find that a two year old billy is throwing a tantrum because james will not share his tricycle with him. billy tantrum is likely due to his immaturity and a. physical immaturity b. cognetive immaturity c. undeveloped communication ability d.

asked by siulaniperez on March 4, 2015

Hi, I really need help with this question because 1. I suck at geometry and 2. I'm lost but I think this is the answer. Find the volume of a triangular prism with the following dimensions. Round to the nearest whole number. triangle base: 9 ft. triangle

asked by MusicLover14 on March 2, 2016
90. ## maths

A TRENCH OF 2.5 MTS AND DEPTH OF 2 MTS IS DUG OUTSIDE AN RECTANGLE FEILD OF LENGTH OF 250 MTS AND BREADTH OF 200 MTS. THE MUD FROM THE TRENCH WAS EVENLY DISTRIBUTED IN THE RECTANGULAR FIELD. FIND THE INCREASE IN THE HEIGHT OF THE FIELD.

asked by Anonymous on April 15, 2012
91. ## Physics

A train moving with constant velocity travels 190 north in 14s and an undetermined distance to the west. The speed of the train is 36m/s. Find the direction of the train's motion relative to north. How far west has the train traveled?

asked by Chelsea on February 7, 2013
92. ## CHEMISTRY

Lysozmyne is an enzyme that breks bacterial cell walls. A solution containing 0.150g of this enzyme in 210ml of solution has an osmotic pressure of 0.217kPa at 25*C. What is the molar mass of Lysozmyne? I cant find the chemical formula anywhere. I have

asked by lulu78 on October 15, 2010
93. ## physics

A ball of mass m is rotated at constant speed v in a vertical circle of radius r as shown below. Find the tension in the cord when the ball is at position A and position B. (Position a is in top of the wheel, position B is on the bottom of the wheel, 180

asked by pakilina on November 25, 2011
94. ## physics

A particle leaves its initial position x0 at time t=0 moving in the positive x direction with speed v0 but undergoing acceleration of magnitude (a) in the negative x direction. Find expressions for a) the time when it returns to the position x0 and b) its

asked by princessw on January 30, 2012
95. ## Physics

A bucket of mass 1.70 kg is whirled in a vertical circle of radius 1.50 m. At the lowest point of its motion the tension in the rope supporting the bucket is 20.0 N. 1) Find the speed of the bucket. 2) How fast must the bucket move at the top of the circle

asked by Anonymous on December 5, 2009
96. ## statistics

Given that x is a normally distributed random variable with a mean of 60 and a standard deviation of 10, find the P(56 < x 56.)Please write your answer in a complete sentence.

asked by Rachel on July 23, 2012
97. ## Physichs

A pedestrian is running at his maximum speed of 6.0m/s to catch a bus stopped by a traffic light. When he is 25m away from the bus the light changes and the bus accelerates uniformly at 1.0m/s^2. Find either (a) how far he has to run to catch the bus or

asked by Sebastian on September 18, 2011

the total cost of producing x units of toys is C(x)=110-4x+〖.02x〗^2. a.find the marginal cost b. if 50 toys are manufactured, what is the rate of change of the total cost? c.what is the amount in peso of the actual cost of manufacturing the 51st toy?

asked by ma.gelifer on April 9, 2013
99. ## physics

A 2.7-kg box is released on a horizontal surface with an initial speed of 2.9 m/s. It moves on the surface with a deceleration of 0.27 m/s^2. Calculate the kinetic friction force on the box. I couldn't find an example of this anywhere but...is it:

asked by Jamie on May 25, 2009
100. ## statisics

The annual Salary of an electrical engineer is given in terms of the years of experience by the table below. Find the equation of linear regression for the above data and obtain the expected salary for an engineer with 45 years of experience. Round to the

asked by Anonymous on April 19, 2010