total normal stresses of 110 and 40 kpa are applied to two planes at right angles in an element of soil. the shear stress acting on those palnes is 20 kpa. what must be the value of the pore pressure

33,545 results, page 93
1. College Stat

Draw a vertical line through a normal distribution for each of the following z- score locations. Determine whether the body is on the right or left side of the line and find the proportion in the body. (a). z = 2.20 (b) z = 1.60 (c) z = -1.50 (d) z = -

asked by jackie on October 20, 2010
2. Chemistry

The normal boiling point of benzene is 80 degree C and its heat of vaporizations is 30.8 kj/mol. What is its boiling point at the top of Pikes Peak where P=260 mmHg?

asked by Tyler on April 28, 2011
3. Statistics

Draw a vertical line through a normal distribution for each of the following z-score locations. Determine whether the body is on the right or left side od the line and find the proportion in the body. a. z= 2.20 b. z= 1.60 c. z= -1.50 d. z= -0.70

asked by Lyndyc on December 6, 2013
4. Statistics

Draw a vertical line through s normal distribution for each of the following z-score locations. Determine whether the tail is on the right or left side of the line and find the proportion in the tail. a. z=2.00 b. z=0.60 c. z= -1.30 d. z= -0.30

asked by Lyndyc on December 6, 2013
5. calculus: multivariable

Find the points on the hyperboloid x2 −y2 +2z2 = 1 where the normal line is parallel to the line that joins the points (3,−1, 0) and (5, 3, 6). Please show me how to do it..the answer is [+- rad 6/(3), +- 2rad 6/(3), +- rad6/(3)]

asked by sara on May 3, 2008
6. statistics

The average (arithmetic mean) of a normal distribution of a school's test scores is 65, and standard deviation of the distribution is 6.5. A student scoring a 78 on the exam is in what percentile of the school?

asked by Anonymous on December 24, 2010
7. physics

Sally applies a total force of 71 N with a rope to drag a wooden crate of mass 100 kg across a floor with a constant acceleration in the x- direction of a = 0.1 m/s2. The rope tied to the crate is pulled at an angle of  = 50  relative to the floor.

asked by Jacob on October 13, 2012
8. Pre-Calc

Hello, I am not sure how to go about solving this equation: The total electrical resistance R of two resistors connected in parallel with resistances R1 and R2 is given by 1/R=1/R1+1/R2. One resistor has a resistance of 2.3 ohms. Let x be the resistance of

asked by Jon on December 7, 2009
9. math

An advertisement states that eight thermometers cost \$12.42 minus a 3% discount. Dr. wants to order a dozen to take advantage of the savings, sales tax is 5%. What would the cost be? Is my math right? I divided 8 by \$12.42 and got \$1.55 p/thermometer.

asked by debbie on April 28, 2010
10. Covenant polytechnic. Aba.

Two converging lenses having power of +2.0 and +20.0 diopter are used to give magnifications in an astronomical telescope. calculate the angular magnification of the telescope when (I).in normal adjustment. (ii).The final image is formed at the least

asked by Ewuosa Destiny on August 21, 2015
11. Physics

What is the angle of refraction of a light ray that enters the surface of a calm lake from air at an angle of 45o to the normal? The refractive index of water is 1.333. I don't even know how to start this or what the formula is. Thanks for your help in

asked by confused on January 24, 2013
12. biology

hi, I am studying for an exam and I am trying to really understand the processes of things. So, in a cardiac muscle (everything else normal) what would happen if sympathetic stimulation does not lead to the phosphorylation of Troponin-I? I am asking

asked by jack on February 28, 2015
13. Physics

Sukey is riding her bicycle when she sees a fallen tree 42 m ahead. If the coefficient of friction is .36 and she is travelling at 50 km/ hr and she and the bike have a mass of 95 kg, how much stopping distance does she need. I got as far as her speed

asked by lizgreene52 on November 20, 2012
14. Statics

In designing an experiment, a psychologist is willing to assume that the underlying distribution for the time to learn a list of words is approximately normal with a standard deviation of 40 seconds. He wants to be 95% sure that the maximum error of his

asked by Heather on December 1, 2012
15. English help explaining

I don't get what this sentence means to say. With the new spaces created by immigration, the enforced alienation from ‘normal’ ties of human socializing brings the memory of what has been left behind to the fore as the new spaces of existence acquire

16. stat

Construct a 90% confidence interval for the population mean. Assume the population has a normal distribution. A same of 15 randomly selected math majors has a grade point average of 2.86 with a standard deviation of 0.78. Round to the nearest hundredth.

asked by S on December 5, 2015
17. physics

Suppose we have two qubits in the state (a|0⟩+b|1⟩)|0⟩, to which we apply the following circuit. (a) Is the resulting state entangled? Yes No (b) Specify the state of each qubit after we applied the circuit.

asked by s on March 1, 2013
18. torque

what happens to torque where force is applied? what happens to torque when force is moved from axis of rotation? what happens to torque when d changes? I will be happy to critique your thinking on this.

asked by Anonymous on January 16, 2007
19. Precalculus

I'm HOPING this is the last problem I need help on.. :-/ List the possible rational zeros of f using the rational zero theorem. f(x) = 2x^3 - x^2 + 5x + 6 I applied the rational zero theorem, but none of the factors worked :(

asked by Emily on September 17, 2009
20. Chemistry

If 72.4 kJ of heat is applied to a 95.2 g block of metal, the temperature of the metal increases by 10.7 C. Calculate the specific heat capacity of the metal in J/g C?

asked by Mystery Mania on May 5, 2011
21. Math

How do I determine which of theses triangles are right triangles or not? I am given a table with: Traingle | Side 1| Side 2| Side 3| Q |6 6 30 R |6 4 10 S |5 4 41 T |5 4 3 I Know the equation a^2+b^2=c^2, and have applied it to this, but cannot get an

asked by Not Telling on November 24, 2015
22. Physics

Several forces are applied to an object. If the object 40 m along the horizontal, and if one of the forces is a constant 5.0 N in the opposite direction, then what is the worst done on the object by that force?

asked by Mary on October 26, 2016
23. science

two balls of same size but of different material ,rubber and iron are kept on the smooth floor of a moving train.the brakes are applied suddenly to stop the train .Will the balls start rolling ?If so,in which direction ?Why they move with the same speed

asked by shruti on August 17, 2011
24. Physics

An object with a mass of (2.844x10^1) kg is subjected to a force of (3.964x10^3) N directed at an angle of (6.374x10^1) degrees from the x axis. A second force of (1.3x10^2) N acting in the negative X directions is also applied to the object. To two

asked by Christine on February 12, 2017
25. math

When a car makes an emergency stop on dry road, it leaves skid marks. The speed S, in miles per hour, of the car when brakes were applied is related to the length L, in feet, of the skid mark. Functional notation is needed, please help.

asked by Marcquillia on January 31, 2015
26. physics

A tennis player smashes a serve so that the racquet is in contact with the ball for 0.055 s, giving it an impulse of 2.5 N ⋅ s. What average force was applied during this time? Assume that the vertical motion of the ball can be ignored. If the ball's

asked by dreamygirl on May 10, 2012
27. physics

In an emergency stop to avoid an accident,a shoulderstrap seat belt holds a 60-kg passenger firmly in place. If the car were initally traveling at 90 km/h and came to a stop in 5.5s along a straight, level road, what was the average force applied to the

asked by melissa on January 17, 2008
28. Physics

A constant torque of 22.9 N·m is applied to a grindstone whose moment of inertia is 0.168 kg·m2. Using energy principles, and neglecting friction, find the angular speed after the grindstone has made 17.1 rev, assuming it started from rest. Answer in

asked by dallas on April 2, 2013
29. physics

During an experiment that Paul and Dawn performed the stretch of a spring was directly proportional to the force applied to the spring. When they put the data on a graph, they would expect to have what type of curve? Answers: Hyperbola, parabola, straight

asked by Lily on January 26, 2009
30. Physics

A pulley system is used to lift a piano 2.6 m. If a force of 2510 is applied to the rope as the rope is pulled in 14 m, what is the efficiency of the machine? Assume the mass of the piano is 750 kg. I know the equation is eff = Wout / Win I'm just confused

asked by Becky on March 30, 2011
31. Physics

A pulley with a rotational interia of 4.4*10^-3 kg m^2 about its axle and a radius of 6 cm is acted on by a force applied tangentially at its rim. The force magnitude varies in time as F=0.32t + 0.27t^2 where F is in newtons if t is given in seconds. The

asked by Rachel on November 16, 2009
32. Physics

An object with a mass of 2.489x10^1 kg is subjected to a force of 4.8124x10^2 N directed at an angle of 2.819x10^1 degrees from the x axis. A second force of 2.84529x10^3 N acting in the negative X directions is also applied to the object. To two

asked by PHYSICS HELP PLS on October 22, 2010
33. PHYSICS

A long solenoid that has 1200 turns uniformly distributed over a length of 0.37 m is required to produce a magnetic field of magnitude 0.02mT at its center. what voltage should be applied across the solenoid if it has a resistance of 20ohms? can someone

asked by Sasha on March 29, 2018
34. Physics

A cyclist starts from rest and accelerates at 2m/s2, for 2second. Her velocity remains constant for the following 4second. The brakes are then applied and the bicycle decelerates uniformly until it comes to rest after 10 second. Find(a) the distance moved

asked by Physics on March 29, 2016
35. math/physics

A 8 kg mass is attached to a spring hanging from the ceiling and allowed to come to rest. assume that the spring constant is 40 n/ m and a damping constant is 3 N/m. At t=0 and external force of 2 sin(2t+PI/4)N is applied to the system. determine amp,

asked by Frank on April 10, 2015
36. 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
37. physics

A boat that travels at a speed of 6.75 m/s in still water is to go directly across a river and back, as shown in the figure below. The current flows at 0.50m/s At what angles must the boat be steered? How long does it take to make the round-trip? (Assume

asked by dj on September 14, 2012
38. math

Kim bought a total of 48 cookies. Each cookie costs \$.55, including tax. Of the cookies she bought, 3/8 were lemon cookies. What was the total cost of only the lemon cookies?

asked by sonia on April 4, 2016
39. math

jerry sold 7/20 of the total number of tickets that were sold for the spring band concert what percent of the total number of tickets did jerry sell

asked by ciara on April 30, 2015
40. math

Kim bought a total of 32 cookies. Each cookie costs \$.65, including tax. Of the cookies she bought, 3/8 were lemon cookies. What was the total cost of only the lemon cookies?

asked by sharday on December 17, 2015
41. math

List the sides of triangle ΔMNP in ascending order (shortest to longest) if: m∠M = 64°, m∠N = 48°, for this one i am not sure if your supposed to find the third angle and or the third side can you guys explain and show me the answer i got 132

asked by maria on January 28, 2017
42. physics

A velodrome is built for use in the Olympics (see the figure below). The radius of curvature of the surface is 19.1 m. At what angle should the surface be banked for cyclists moving at 11 m/s? (Choose an angle so that no frictional force is needed to keep

asked by nerma on October 7, 2013
43. Trigonometry (Law of Sine)

Triangulation can be used to find the location of an object by measuring the angles to the object from two points at the end of a baseline. Two lookouts 20 miles apart on the coast spot a ship at sea. Using the figure below find the distance, d, the ship

asked by Alianne on February 25, 2012
44. programming

How to work this programming problem- Write a program that allows the user to input a total dollar amount for an online shopping order and computers and outputs the shipping cost based on the following schedule Order total Ship within USA Ship to Canada

asked by Bettie on February 16, 2012
45. programming

Example Develop a pseudocode algorithm for a program that accepts each of the average marks of 10 students in a class and computes the sum and the average mark of the class. The program should display the average mark of the class. Begin Set total to zero

asked by yvonne on June 27, 2016
46. Maths B

The running costs of a particular factory consist of two components – a constant charge per week for rent of premises and a variable cost for labour which depends on the number of staff working in the factory in that particular week. The total weekly

asked by Rianna on March 13, 2012
47. Maths B

The running costs of a particular factory consist of two components – a constant charge per week for rent of premises and a variable cost for labour which depends on the number of staff working in the factory in that particular week. The total weekly

asked by Z on March 1, 2017
48. STAT 250..Help!

What is the probability of randomly selecting a z-score less than z = –0.80 from a normal distribution? a)-0.2119 b)0.7881 c)0.2119 d)-0.7881

asked by Jane Segurra on March 21, 2013
49. chem

what are the normal freezing points and boiling points of the following solutions: a. 21.1g NaCl in 135mL of water b. 15.4g urea in 66.7 mL water?

asked by paul on January 12, 2011
50. Read Y9 chemistry and go upwards

3. Copper carbonate turns black when it is heated and the mass decreases. What is the normal colour of copper carbonate?

asked by Moira on September 10, 2008
51. Math

10cm 3cute of normal specimen of human blood contains 1.2g of hemoglobin how many grams does 18cm 3cute of the same blood contain? Please help!

asked by Delores on July 30, 2010
52. Statistics 250

What is the probability of randomly selecting a z-score less than z = –0.80 from a normal distribution. a)-0.2119 b)0.7881 c)0.2119 d)-0.7881

asked by Jane Segurra on March 21, 2013
53. Physics

An object with a weight of 30 newtons is placed on a flat, level surface. What is the normal force that the surface pushes on the object with?

asked by Olivia on November 15, 2012
54. math

I have the point slope equation of a line as y-500=(-4/3)x+(188/3) how would i convert this equation into the normal form of a line?

asked by kelly on April 20, 2009
55. Mathematics

Using quotient rule find dy/dx of: y=(4+x)/(cos(x)) and find the equation of the normal to the curve y=(4+x)/(cos(x)) at the pint where x=0 Use y=mx+c form

asked by Joe on December 14, 2015
56. Statistics

True or False If a sample of at least 30 scores is randomly selected from a normal population, the sample mean will be equal to the population mean.

asked by Lyndyc on December 10, 2013
57. Statistics

Find z such that 44.0% of the standard normal curve lies to the left of z. 0.151 -0.772 -0.151 -1.519 1.519

asked by Alex on June 20, 2010
58. chem

what are the normal freezing points and boiling points of the following solutions: a. 21.1g NaCl in 135mL of water b. 15.4g urea in 66.7 mL water?

asked by paul on January 12, 2011
59. physical science

A train sounding its horn is approaching an observer. The pitch of the horn's sound relative to its normal pitch is???

asked by ali on July 25, 2012
60. Statistics

a normal distribution ha am ean of 80 with a standard deviation of 20. what score separates the highest 15% of the distribution from the rest of the score?

asked by Leigh on October 1, 2010
61. chemistry

If the vapor pressure of a liquid is 0.850 atm at 20°C and 0.897 atm at 25°C, what is the normal boiling point of the liquid?

asked by Elisha on January 20, 2016
62. Physics

A 55 kg skier rests on a hill that has an angle of 25° to the horizontal. What is the magnitude of the normal force the hill exerts on the skier?

asked by Dawn on December 15, 2010
63. math

If H is a subgroup of G, and K is a normal subgroup of G, prove that: HK = KH

asked by Jackie on October 14, 2011
64. statistics

a.A normal distribution is any distribution that is not unusual

asked by Mercede on May 3, 2010
65. calculus

If g(1) = 4 and g¢ (1) = − 2, find f ¢ (1), where f(x) = x2 ln (g(x)). Also find the equation of the normal to f at x = 1.

asked by ak on October 19, 2011
66. College Abstract Algebra

If H is a subgroup of G and K is a normal subgroup of G,prove that HK = KH

asked by Jackie on September 29, 2011
67. Algebra 2

Adding 1 to which digit will increase 736,419 by ten thousand? i think is 3... bill has four more dimes than nickels, and seven fewer nickels than pennies.he has a total of \$3.35. how many of each kind of coin has he? bill has four more dimes than nickels,

asked by Ron on November 2, 2006
68. algebra

Train A and B are traveling in the same direction on parallel tracks. Train A is traveling at 100 mph and train B is traveling at 110 mph. Train A pases a station at 4:10 a.m. If train B passes the same station at 4:22 a.m., at what time will train B catch

asked by Nancy on December 19, 2010
69. !!MATH!!

A decroative floor pattern has one red square tile surrounded by 12 blue tiles. Write and evaluate an expression to show how many total tiles (red and blue) are needed if there are 15 red tiles. Then make a table showing the total number of tiles if there

asked by JACKY on September 30, 2011
70. physics

Suppose the ski patrol lowers a rescue sled and victim, having a total mass of 95.0 kg, down a θ = 50.0° slope at constant speed. The coefficient of friction between the sled and the snow is 0.100. (a) How much work is done by friction as the sled moves

asked by Karina on July 9, 2015
71. Algebra HELP

I am resubmitting this in hopes that someone may point me in the right direction...... When managing a business, it is important to take inventory of where your money is spent. You have a monthly budget of \$5,000. Refer to the table below and answer the

asked by Anonymous on May 23, 2008
72. material science

A uniform compressive stress σz is applied to the surface of the metal alloy, and it may be assumed that there is no friction between the alloy and the die. This aluminum alloy has Young’s modulus E=70GPa and a Poisson’s ratio ν=0.33. Determine the

asked by karthik on November 20, 2016
73. Chemistry

non-volatile means a liquid that won't evaporate at all. It's not a commomly encountered term because there is usually some evaporation (especially as heat is applied). The usual phrase is "very low volatility". Oil at room temperature or colder fits this

asked by Lance on January 24, 2007
74. math

angle ABC and DEF are supplementary angles. the measure of DEF is 20 degrees less than 3 times the amount of ABC. what are ABC and DEF.

asked by hunter on January 25, 2013
75. Maths Percentage

(1)Raghu has some apple. He sold 40% more than he ate. If he sold 70 apples, how many did he ate? (2)A man gives 10% of his money to his children and 20% of the remaining to trust.If he is still left Rs 9600, what did he originally have? (3)A boy remains

asked by Ashmitt on September 12, 2016
76. algebra

a train travels 600 miles from Los Angles to San Francisco traveling at a certain speed the return trip is made traveling 40 mph faster the return time is 4 less how fast was the train traveling in each direction?

asked by jon on October 19, 2014
77. Exterior angle what am I doing wrong?

Find the measure of the indicated exterior angle. Exterior angle is: 197-5n Two interior angles are: 5n+21 and n+11 I set it up as: 197-5n=5n+21+n+11 197-5n=6n+32 165=11n but this does not make sense.

asked by bart on May 16, 2010
78. Algebra

LS 154. Find the measure of angle x. Identify the two angles that form the larger angle. 2 Write a subtraction equation. Subtract to find the measure of x. The measure of x

asked by Isabella on March 2, 2017
79. Algebra

LS 154. Find the measure of angle x. Identify the two angles that form the larger angle. 2 Write a subtraction equation. Subtract to find the measure of x. The measure of x

asked by Isabella on March 1, 2017
80. Trigonometry

The angles of elevation of an office building as observed from the top and ground level of a 10 meters tall residential building are 68° and 72° respectively. How tall is the office building? How far apart are the two buildings?

asked by Kate on July 18, 2015
81. physics

A radioactive nucleus at rest decays into a second nucleus, an electron, and a neutrino. The electron and neutrino are emitted at right angles and have momenta of 8.55×10−23 and 5.33×10−23 , respectively. What is the magnitude of the momentum of the

asked by Cara on April 13, 2011
82. Random

A room has five corners, one of the five has an angle is 179 degrees what would be the measure meant of the other angle if the sum of two of the unknown angles is 60 and the sum of the other two is 3 less than the sum of the first two. my first question

asked by Alex on May 9, 2017
83. Science

In the following diagram, the greem ball changes direction after colliding with the red ball because the red ball has more momentum. True

84. math

Solve. The total sales made by a salesperson were \$25,000 after 3, months and \$68000 after 23 months. Predict the total sales after 42 months. 25000=3months 68000=23 months x=42 months how do I do this?

asked by rmz on February 22, 2010
85. chemistry

Inglês Português Espanhol For the determination of the quantity of chloride in a physiological serum sample by the Volhard method, a sample of 25.00 ml was treated with 50.00 ml of 0.110 mol/L Silver nitrate solution and the excess of silver ions was

asked by william on October 4, 2017
86. Math--Statistics

I have a couple of questions that need review--I've answered them, but I'm not sure if I'm correct. 1.)Suppose you interview 10 randomly selected workers and ask how many miles they commute to work. You'll compute the sample mean commute distance. Now

asked by Anonymous on March 15, 2011
87. math

Angelo is paid double time for each hour he works over 40 hours in a week. Last week he worked 42 hours and earned \$484. What is his normal hourly rate?

asked by Kelsey on August 29, 2013
88. statistics

The average time to sew a pair of pants is 4.2 hours with a standard deviation of 30 minutes and if the distribution is normal then the probability of a worker finishing the pants in less than 3 hours is.

asked by bill on November 16, 2010
89. statistics

1) A scale measuring prejudice has been administered to a large sample of respondents. The distribution of scores is approximately normal with a mean of 31 and a standard deviation of 5. What percentage of sample had scores below 20?

asked by Mich on September 28, 2011
90. math

The weights of extra large eggs have a normal distribution with a mean of one ounce and a standard deviation of 0.1 ounces. The probability that a dozen eggs weighs more than 13 ounces is closest to...?

asked by Hannah on February 6, 2008
91. Biology

Hi, I am trying to work out a hypothesis to compare Estrogen receptors in breast cancer cells to normal breast tissues. Am I right in thinking that this will be a hypothesis using "effect" words instead of association ?

asked by Yvonne on April 1, 2017
92. physics

The x coordinate of the center of gravity of this horse is 1/4 of the way from his front legs (at left) to his rear legs (at right). His weight is W. What is the normal force exerted by the ground on each of his two front hooves?

asked by Frustrated on December 11, 2012
93. statistics

The lifetime of a 2-volt non-rechargeable battery in constant use has a normal distribution with a mean of 516 hours and a standard deviation of 20 hours. Ninety percent of all batteries have a lifetime less than

asked by Anonymous on May 31, 2013
94. Math

In Exercises 1–6, describe the misuse or misinterpretation of statistics that may be involved: Over 60% of the people who fly to Normal, Illinois, do so on American Airlines. Hence, most people prefer American to any other airline.

asked by Anonymous on July 29, 2009
95. Statistics

The lifetime of a 2-volt non-rechargeable battery in contant use has a normal distribution with a mean of 516 hours and a standard deviation of 20 hours. Ninety percent of all batteries have a lifetime less than ?

asked by Karen on September 2, 2009
96. chem

What is the density of an aqueous solution of potassium nitrate, that has a normal boiling point of 103.0 degrees Celsius, and an osmotic pressure of 122 at 25 degrees Celsius?

97. Phys

A car of mass 1200kg is moving on a road at the speed of 60km/hr.if coefficient of friction is 38, and Normal force is 50N. The frictional force acting on the car is given by

asked by Phy on November 8, 2017
98. STAT

Assume that women’s heights are normally distributed with a mean given by µ = 64.6 inches and standard deviation given by σ = 2.2 inches. What area under the normal curve corresponds to the probability that a woman’s height is between 63.7 inches and

asked by Jacky on October 12, 2013
99. Statistics

The lifetime of a 2-volt non-rechargeable battery in contant use has a normal distribution with a mean of 516 hours and a standard deviation of 20 hours. Ninety percent of all batteries have a lifetime less than ?

asked by Karen on September 2, 2009
100. statistics

A scale measuring prejudice has been administered to a large sample of respondents. The distribution of scores is approximately normal with a mean of 31 and a standard deviation of 5. What percentage of sample had scores 1) Below 20 2) Above 40 3) Above 20