
physics
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 in the element if the minor principle stress in the
asked by nick on September 19, 2010 
soil mechanics
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 in the element if the minor principle stress in the
asked by nick on September 19, 2010 
solid mechanics
A steel plate is subjected to tensile stresses of 200MPa and 150 MPa at right angles to each other. Determine the normal and tangential stresses on a plane inclined at 60 to the 200 MPa stress. Also find the plane on which the resultant stress has maximum
asked by navneet kumar on March 3, 2015 
Chemistry
the vapor pressure of ethanol at its normal boiling point would be 1)80 kPa 2)101.2 kPa 3)273 kPa 4)373 kPa would it be 1 ?
asked by Hannah on February 25, 2011 
chem
Nitrogen(75.5 kPa), oxygen (19.2 kPa), carbon dioxide(0.05 kPa) and water vapor(4.3 kPa) are the usual atmospheric components. What is the total atmospheric pressure in kPa?
asked by joe on March 30, 2008 
math
An airline with two types of airplanes, P1 and P2, has contracted with a tour group to provide transportation for a minimum of 400 first class, 900 tourist class, and 1500 economy class passengers. For a certain trip, airplane P1 costs $10,000 to operate
asked by Mary on July 30, 2018 
Math
Tatum Company has four products in its inventory. Information about the december 31, 2009, inventory is as follows: product total total total Net cost replacement realizable cost Value 101 $120,000 110,000 100,000 102 90,000 85,000 110,000 103 60,000
asked by Bobbi Loffredo on March 25, 2011 
Chemistry
(a) What is the distance between second nearest neighbor atoms in vanadium? Express your answer in cm. (b) What is the interplanar spacing between (110) planes in vanadium? Express your answer in cm. (c) At what angle must (110) planes of vanadium be
asked by Chemgam on January 11, 2013 
Chemistry
What is the total pressure of a mixture of gases made up of CO2, O2 and H2 if the partial pressures are 22.3 kPa, 44.7 kPa and 112 kPa respectively?
asked by Anonymous on April 4, 2011 
Sociology
5. What type of sociologist stresses a commitment to positively impacting society through sociology? would it be applied 1)academic 2)applied 3)public 4)scientific
asked by Susan on July 15, 2012 
Material Sciences
HW9_1: AXIAL AND TRANSVERSE STRAINS  THE POISSON'S RATIO When no loads are applied, the isotropic elastic block depicted below is a cube of side L0=200 mm. When the distributed load (surface traction) q=200 MPa is applied as shown below, the side length
asked by AMK on July 17, 2013 
Physics
HW9_1: AXIAL AND TRANSVERSE STRAINS  THE POISSON'S RATIO When no loads are applied, the isotropic elastic block depicted below is a cube of side L0=200 mm. When the distributed load (surface traction) q=200 MPa is applied as shown below, the side length
asked by MAN on July 18, 2013 
THEORY OF MACHINE
The principal stresses at a certain point in a strained material are 150 MPa and 48 Mpa both tensile. Find normal and tangential stresses on a plane inclined at 20 degree with the major principal plane.
asked by rajesh jain on January 12, 2013 
MAT LAB
HW9_1: AXIAL AND TRANSVERSE STRAINS  THE POISSON'S RATIO When no loads are applied, the isotropic elastic block depicted below is a cube of side L0=200 mm. When the distributed load (surface traction) q=200 MPa is applied as shown below, the side length
asked by AMK on July 19, 2013 
chemistry
if .55 grams of a gas dissolves in 1 liter of water at 20 kPa of pressure, how much will dissolve at 110 Kpa of pressure?
asked by Anonymous on March 29, 2011 
physics
1500 cm^3 of ideal gas at STP is cooled to 20°C and put into a 1000 cm^3 container. What is the final gauge pressure? 111 kPa 240 kPa 3113 kPa 4141 kPa 5240 kPa
asked by shirly on February 24, 2014 
chemistry
The gas in a fixed container was at STP before is was lifted by a balloon into the atmosphere. What would the new pressure be in kPa if the temperature at a higher altitude was 268 K? a .00138 kPa b 103 kPa c 99.4 kPa d .982 kPa
asked by tristan on May 4, 2016 
Business Cal.
Suppose the marginal revenue (in dollars) from the sale of x jet planes is R'(x)=2x(x^2+50)^2 A. Find the total revenue function if the revenue from 3 planes is $206,379. B. How many planes must be sold for revenue of at least $450,000?
asked by David on December 5, 2006 
physics
How much absolute (total) pressure must a submarine withstand at a depth of 120m in the lake. Give answer in kPa. (Use 10m/s^2 for g). h=120m p_water = 1 g/cm^3 = 1000 kg/m^3 p_atmosphere = 101.3kPa P_total = ? P_water =density *g*h =1000*10*120 =1200000Pa
asked by Tammy on December 3, 2007 
physics
How much absolute (total) pressure must a submarine withstand at a depth of 120m in the lake. Give answer in kPa. (Use 10m/s^2 for g). h=120m p_water = 1 g/cm^3 = 1000 kg/m^3 p_atmosphere = 101.3kPa P_total = ? P_water =density *g*h =1000*10*120 =1200000Pa
asked by Tammy on December 4, 2007 
Calc.
Use normal vectors to determine the intersection, if any, for each of the following groups of three planes. Give a geometric interpretation in each case and the number of solutions for the corresponding linear system of equations. If the planes intersect
asked by Derek on July 9, 2008 
Calc.
Use normal vectors to determine the intersection, if any, for each of the following groups of three planes. Give a geometric interpretation in each case and the number of solutions for the corresponding linear system of equations. If the planes intersect
asked by Derek on July 10, 2008 
Calculus
Use normal vectors to determine the intersection, if any, for each of the following groups of three planes. Give a geometric interpretation in each case and the number of solutions for the corresponding linear system of equations. If the planes intersect
asked by Nicole on July 9, 2008 
math
Given:
asked by hotdognibba70 on September 26, 2017 
physics
1500 cm3 of ideal gas at STP is cooled to 20°C and put into a 1000 cm3 container. What is the final gauge pressure? 11 kPa 40 kPa 113 kPa 141 kPa 240 kPa
asked by lila on May 23, 2014 
Chemistry
Nitrogen (80 kPa), oxygen (21.0 kPa), carbon dioxide (0.03 kPa), and water vapor are the usual components of air. What is the partial pressure of water in mm Hg if the total atmospheric pressure in 1.00 atm?
asked by Anonymous on November 11, 2016 
solid mechanics
Q.1 The normal stresses at a certain point in a body are 80MPa tension and 50Mpa compression. There are also shear stresses across the plane of tension and compression equal to 30MPa.Calculate the maximum direct stress and maximum shear stress in the
asked by Anand on February 16, 2014 
engineering
A saturated soil sample under CU test was subjected to a confining pressure of 200 kPa with back pressure (pore pressure) of 50 kPa. What would be the value of pore pressure if the confining pressure was raised to 400 kPa without drainage? If the pore
asked by WYNN on December 4, 2013 
AQA Mechanics (M1), Statics and forces,please help
The diagram shows a cylinder of mass 20 kg lying at rest on two smooth planes inclined at angles of 40 degree and 50 degree to the horizontal. Calculate the reaction force exerted by the planes on the cylinder. For digram, please click the following link
asked by Bob on March 19, 2012 
physical science
If the absolute pressure of a gas is 550.280 kPa, its gage pressure is A. 101.325 KPa B. 277.280 KPa C. 448.955 KPa D. 651.605 Kpa
asked by Josh on December 2, 2007 
Chemistry
What is the one standard atmosphere of pressure in kilospascals 0 kPa 1 kPa*** 101.3 kPa 760 kPa
asked by Nikkie on June 2, 2016 
Math  Intersection of planes
Find the vector equation of the line of intersection for the pair of planes. Plane one: x+5y3z8=0 Plane two: y+2z4=0 I did half of the work but now i am stuck. the normal of the planes are not parallel and therefore a solution exists, you simultaneously
asked by Shaila on September 1, 2010 
Math
If one of the angles of a triangle is 110 degree then the angle between the bisector of the other two angles is what ?
asked by Pranav on December 21, 2016 
Torque Vectors Question (HELP)
I was given this info r=1.5 m d=3 m F= 50 N angle= 110 degrees 1. What torque is applied? T=Fsin T= (1.5)(50)sin(110) T=70 J 2. At what angle would enough force be applied to achieve maximum toque? T=Fsin T= (1.5)(50)sin(90) T=75 (joules) 3. If someone
asked by Rajpreet on February 28, 2015 
Vectors Math
I was given this info r=1.5 m d=3 m F= 50 N angle= 110 degrees 1. What torque is APPLIED ? T=Fsin T= (1.5)(50)sin(110) T=70 N m 2. At what angle would enough force be applied to achieve maximum toque? T=Fsin T= (1.5)(50)sin(10) T=13.0 N m 3. If someone
asked by Jamie on February 28, 2015 
Math
Consider a curve lying on the cylinder x^2 + y^2 = 1 and given by the vector function r(t) = (cost,sin t, t^2), for t ≥ 0. Find equations of normal planes at the points (1, 0, 0) and (1, 0, 4π^2) Hi, I don't really know how to start this. I know the
asked by A. on December 8, 2012 
Solid Mechanics
A casts iron block of 5cm2 cross section carries load of 50KN. Calculate the magnitude or normal and shear stresses on a plane whose normal is inclined at 30o to the axis of the block. Also determine the maximum shear stress in the block.
asked by rakesh on August 8, 2012 
Vectors
To answer this I would just sub in the x and y values right? I got a) as my answer since it equals 0. Which of the following would describe the sketch of the expression xy+2y3x6=0 a) the planes x=2 and y=3 b) the planes x=3 and y=2 c) the planes x=6
asked by Sara on March 17, 2015 
Physics ASAP
I have question: Galileo experimented with balls rolling on inclined planes with angles ranging from 0 degrees to 90 degrees. What range of accelerations correspond to this range in angles?
asked by Soly on September 9, 2007 
soil mechanics
The following results were obtained from a CU on two samples: Test no. Confining stress (kPa) Deviatoric stress (kPa) Pore pressure (kPa) 1 100 400 20 2 300 760 60 a) Determine c and ƒÖ for total stress and effective stress condition. b) What is the
asked by WYNN on December 4, 2013 
Calc.
I am so confused with this last part of the unit! What in the world is going on: Use normal vectors to determine the interaction, if any, for each of the following pairs of planes. Give a geometric interpretation in each case and the number of solutions
asked by Derek on July 9, 2008 
Solid Mechanics
A cast iron block of 5Cm^2 cross section carries an axial compressive load of 50KN.Calculate the magnitude or normal and shear stresses on a plane whose normal is inclined at 30 deg.to the axis of the block,also determine the maximum shear stress in the
asked by Devi on August 3, 2012 
Calculus
An air traffic controller spots 2 planes at the same altitude converging on a point as they fly at right angles to each other. One plane is 150 miles from the point moving at 450 miles per hour. The other plane is 200 miles from the point moving at 600
asked by Alexis on October 26, 2011 
geometry
which of the following statements are true? a. if two angles form a linear pair, then the angles are supplementary b. if two angles are right angles, then the angles are complementary c. if two angles have the same measure, then the angles are congruent.
asked by anon12 on September 2, 2018 
Solid Mechanics
pls help me to resolve this question A casts iron block of 5cm2 cross section carries an axial load of 50KN. Calculate the magnitude or normal and shear stresses on a plane whose normal is inclined at 30o to the axis of the block. Also determine the
asked by rakesh on August 8, 2012 
Percalc Helppppp
keep in mind answers should be pi radians or if necessary 3 dec. csc^22=0 all angles 4cos^2x4cosx+1=0 all angles and name 8 angles 7sin^2x22sinx+3=0 all angles and name 8 angles 2cos^2x7cosx=3 all angles sinx(2sinx+1)=0 all angles
asked by Amanda on April 20, 2012 
math
angles c and d are parallel and p is transversal. if m
asked by gabby on January 21, 2009 
Math
The air pressure in a tire is 150.000 kPa. The internal surface area of the tire is 1150.000 cm^2. Determine the total force applied by the air to the tire. (Round to 3 decimal places) Answer = kN 150.000 kPa x 1000 = 150000 Nm 1150.000 cm / 100 cm = 11.5
asked by Danny on December 26, 2013 
Chemistry
Could you show me where to start on solving this equation? The reaction in question will be carried out in a calorimeter. The volume of the chamber inside is 2.00 L. Experiment starts by evacuating the chamber to 0.00 kPa. Then oxygen gas is filled into
asked by Amber on April 14, 2017 
Chemistry
Could you show me where to start on solving this equation? The reaction in question will be carried out in a calorimeter. The volume of the chamber inside is 2.00 L. Experiment starts by evacuating the chamber to 0.00 kPa. Then oxygen gas is filled into
asked by Amber on April 14, 2017 
Chemistry
Could you show me where to start on solving this equation? The reaction in question will be carried out in a calorimeter. The volume of the chamber inside is 2.00 L. Experiment starts by evacuating the chamber to 0.00 kPa. Then oxygen gas is filled into
asked by Amber on April 17, 2017 
physical science
If the absolute pressure of a gas is 550.280 kPa, its gage pressure is A. 101.325 KPa B. 277.280 KPa C. 448.955 KPa
asked by Josh on December 2, 2007 
Math
1. Given:
asked by Amy on December 9, 2015 
Chem
16.3 L N2 at 25 °C and 125 kPa and 40.7 L O2 at 25 °C and 125 kPa were transferred to a tank with a volume of 5.50 L. What is the total pressure at 45 °C?
asked by Anonymous on September 24, 2014 
Chemistry combined gas law
Can someone tell me if I did this combined gas law problem correctly? What would happen to the volume of a container whose initial volume is 21.5 L at STP (standard pressure) and is introduced to conditions of 93.2 kPa and 333 K? Formula: P1 x V1 / T1 = P2
asked by Theresa Kwnt on March 1, 2015 
Chemistry combined gas law
Can someone tell me if I did this combined gas law problem correctly? What would happen to the volume of a container whose initial volume is 21.5 L at STP (standard pressure) and is introduced to conditions of 93.2 kPa and 333 K? Formula: P1 x V1 / T1 = P2
asked by Theresa Kwnt on March 1, 2015 
Chemistry;HELP
Correct the following samples of gases to standard temperature. (Assume pressure is constant)(STP stands for standard temp and pressure which is 273K and 101.3 kPa, you do not have to think about the pressure for these four but on the last three you will
asked by Unknown on August 20, 2013 
Chemistry II
When a specific amount of propanol (C3H8O) is added to 110.0 g of pure water at 60°C, the vapor pressure of water over the solution is lowered by 1.596 kPa. Given the vapor pressure of water at 60°C is 19.932 kPa, what is the mass of propanol added?
asked by Jamie on January 16, 2018 
Chemistry
An unknown gas has a density of 2.36g/L at 298K and 110 kPa. Calculate its molar mass.
asked by Amy on May 2, 2010 
ap chemistry
An apparatus consists of a 2 L flask containing nitrogen gas at 25C and 819 kPa, joined by a valve to a 12 L flask containing argon gas at 25C and 51 kPa. The valve is opened and the gases mix. What is the partial pressure of nitrogen after mixing?
asked by cheri on February 10, 2013 
Solid machanics
At a point in a strained material the principal stresses are 60MPa and 40MPa. Find the position of the plane across which the resultant stress is most inclined to the normal and determine the value
asked by Ashok on December 10, 2015 
Chemistry
A sample of H2 is collected over water such that the combined hydrogen–water vapor sample is held at a pressure of 1 standard atmosphere. What is the partial pressure of the H2 if that of the water vapor is 2.5 kPa? A. 103.8 kPa B. 98.8 kPa C. 2.5 kPa D.
asked by Alexa on May 21, 2014 
Science
If A tank with a flat bottom is filled with water to a height of four meters. what is the pressure at any point at the bottom of the tank? my teacher wants me to ignore atmospheric pressure when calculating my answer A. 3.5 kPa B. 3,500 kPa C. 34.3 kPa D.
asked by Caitlin on May 7, 2013 
Accounting
Cherry Hill Glass Company employs a normal costing system. The following information pertains to the year just ended. • Total manufacturing costs were $1,420,000. • Cost of goods manufactured was $1,391,000. • Applied manufacturing overhead was 20
asked by Lilly on February 18, 2015 
Accounting
Cherry Hill Glass Company employs a normal costing system. The following information pertains to the year just ended. • Total manufacturing costs were $1,420,000. • Cost of goods manufactured was $1,391,000. • Applied manufacturing overhead was 20
asked by Lilly on February 18, 2015 
Physics
If a tank contains water 4 m deep, what is the pressure at the bottom of the tank? (Neglect the atmospheric pressure.) A. 39.2 kPA B. 18.9 kPA C. 4.0 kPa D. 9.8 kPA Im really lost
asked by Dave on April 8, 2015 
Chemistry
4 L of oxygen at a pressure of 400 Kpa and 1L of nitrogen at 200 Kpa were introduced in to 2 L vessel. (A)What is the total pressure of the gases in the vessel. (B)What is the mole fraction of each gas?
asked by Yeneta on September 1, 2012 
sjc coolege
A steel bar 10m long and 10cm ×2.5cm in section .It is subjected to an axial pull of 250KN. Determine the intensities of normal and tangential stresses on a plane.
asked by zee on February 3, 2014 
math
Atmospheric pressure V decreases as altitude h increases. At a temperature of the pressure is 101.1kilopascals kPa at sea level, 86.4 kPa at h = 1 km, and 77.1 kPa at h = 2 km. Use a linear approximation to estimate the atmospheric pressure at an altitude
asked by Tina on March 30, 2007 
Math
I have four sides. I have two 70 degree angles and two 110 degree angles. What shape am I?
asked by Megan Hicks on January 10, 2014 
vector
find equations for the osculating normal and rectifying planes to the curve x=3tt^2, y=3t^2, z=3t+t^3 at point where t=1
asked by Anne on August 30, 2014 
Chemistry Check?
1. A sample of neon is collected at 1273.51 kPa and 12.0 oC. It has a volume of 2.25 L. What would be the volume of this gas at STP? (2.25 L) x (1273.51 kPa / 101.3 kPa) x (0 + 273.15 K) / (12.0 + 273.15 K) = 27.1 L 2.A sample of argon has a volume of 1205
asked by Unknown on August 20, 2013 
Calculus
Consider the following planes. 5x − 4y + z = 1, 4x + y − 5z = 5 a) Find parametric equations for the line of intersection of the planes. b) Find the angle between the planes
asked by Anon on September 5, 2016 
math
Resource allocation podunk institute of technology’s math deaprtment offers two cources: finite math and applied calculus.each section of finite math has 60 studnets, and each section of applied calculus has 50. The department is allowed to offer a total
asked by Swayne on November 29, 2013 
physics
A car is moving at 20 m / s before it applies the brakes for 4 s. It slows at a constant rate to 10 m / s. Five seconds after this, the brakes are applied again and stop the car in 5 seconds. The car slows at a constant rate during this period of
asked by asfand on May 11, 2017 
AP Chemistry
Part 1 of 3: An apparatus consists of a 2 L flask containing nitrogen gas at 30 degrees C and 758 kPa, joined by a valve to a 11 L flask containing argon gas at 30 degrees C and 49.7 kPa. The valve is opened and the gases mix. What is the partial pressure
asked by Gabriella on February 17, 2014 
Math
I need help with these following questions: 1. Which type of graph is best to illustrate differences in data by using bars to represent the data? (a) bar graph (b) line graph (c) circle graph (d) pictorial graph 2. Sales made last year by Murray's
asked by Anonymous on September 21, 2011 
Chemistry
Here is my question and I,m hoping I worked the problem out correctly. A 10g mass of krypton occupies 15.0 L at a pressure of 210 kPa. Find the volume of the krypton when the pressure is increased to 790 kPa. V2 = V1 x P1/P2 V2 = 15.0 L x 210 kPa/790 kPa
asked by Amy on May 8, 2012 
BTech mechanical
At a point in a strained material the principal stresses are 60MPa and 40MPa. Find the position of the plane across which the resultant stress is most inclined to the normal and determine the value of this stress.
asked by Ravi on February 14, 2014 
solid mechanics
at a point in a strained material the principal stresses are 60MPa and 40MPa.find the position of the plane across which the resultant stress is most inclined to the normal and determine the value of this stress.
asked by sabin on February 3, 2014 
Trigonometry
Two planes are flying at the height of 10km. They are going at the same speed, and both traveling due north. If the planes are 3,000 km apart as measured along the surface of the earth, what angle do the lines from the planes make to the center of the
asked by April on August 25, 2015 
Linear Algebra 2
This is another question I can't figure out. Given planes pie1 and pie2 defined as: pie1: 2x + 5y  7x + 2 = 0 pie2: x + y  z + 3 = 0 (b) Give the equation of the line of intersection of these two planes. I only found the answer for (a) where they ask to
asked by Robert on September 10, 2012 
chemistry
A breathing mixture used by deepsea divers contains helium, oxygen, and carbon dioxide. What is the partial pressure of oxygen at 101.4 kPa ifpHe = 82.5 kPa and pCO2 = 0.4 kPa
asked by natasha on July 29, 2008 
science; AP Chem
I don't know how to find the kpa for 35.78 m in this question. I know its a P1V1=P2V2 question, i just need the kpa for 35.78m pls! Question: Divers know that the pressure exerted by the water increases about 100 kPa with every 10.2 m of depth. This means
asked by Anonymous on September 16, 2012 
STATS
Consider the following information: Season Sales(units) Summer Autumn Winter Spring Christmas 98 114 123 105 Holidays 110 110 110 110 The expected frequency for cell winter/holidays (e13) is equal to (1) 104.0 (2) 112.0 (3) 110.0 (4) 116.5 (5) 107.5
asked by JUDY on March 31, 2010 
Math
Perry draws two planes, K and L, as shown. Which statement is true? Plane K and plane L contain four lines because a theorem states that a line extends on both sides of a plane. Plane K and plane L intersect along a line because a postulate states that if
asked by Lisa on October 3, 2012 
math
Which equation is set up correctly to determine the volume of a 3.2 mole sample of oxygen gas at 50°C and 101.325 kPa? V=(3.2 mol)(8.314 L⋅kPa/K⋅mol)(323 K)101.325 kPa V=(3.2 mol)(8.314 L⋅kPa/K⋅mol)(50∘C)1 atm V=(8.314
asked by anonymous on October 21, 2016 
Chemistry
At 20.0°C the vapour pressure of pure methanol is 11.8 kPa and that of pure ethanol is 5.93 kPa. A gaseous mixture of methanol and ethanol is cooled and compressed until the first drops of liquid form at 20.0°C and a total pressure of 10.0 kPa. Assuming
asked by S on November 21, 2017 
THEORY OF MACHINE
A steel bar 10 m long and 10 cm * 2.5 cm in section. It is subjected to axial pull of 250 KN. Determine the intensities of normal and tangential stresses on a plane section at 60 degree to the longitudinal axis.
asked by rajesh jain on January 12, 2013 
math
The opposite angles of a parallelogram are congruent. The adjacent angles are supplementary. If angle X measures 110 degrees, then what are the measures of angle Y and angle Z?
asked by Ian on March 1, 2011 
stats
(a) The test had six multiplechoice items that were scored as correct or incorrect, so the total score was an integer between 0 and 6. Do you think that these data are Normally distributed? Explain why or why not. The distribution is Normal because the
asked by Anonymous on September 26, 2016 
stats
(a) The test had six multiplechoice items that were scored as correct or incorrect, so the total score was an integer between 0 and 6. Do you think that these data are Normally distributed? Explain why or why not. The distribution is Normal because the
asked by Anonymous on September 26, 2016 
Physics
An incompressible fluid is flowing through a horizontal pipe with a constriction. The velocity of the fluid in the wide section of the pipe is 4.00 m/s and the velocity of the fluid in the narrow section of pipe is 9.00 m/s. The pressure of the fluid in
asked by Mikhail on November 10, 2013 
7th grade math Ms. Sue please
Sometimes people say, "Give 110% of your effort." Isit possible to get 110%? Is there ever a situation where you might have a percent over 110%? If no, explain why. If yes, Give a scenario where 110% is used. Please help Ms. sue! I have NO IDEA how to
asked by Delilah on December 4, 2012 
math 8
the measure of
asked by codey on May 21, 2012 
Physic
A 10 kg box starts from rest and is then pulled horizontally 27 meters across the ground by a rope. The rope has a force of 100N applied to it and forms an angle of 50 degree to the ground. The coefficient of kinetic friction is 0.50 for this surface.
asked by Katy needs help on March 7, 2017 
Physic
A 10 kg box starts from rest and is then pulled horizontally 27 meters across the ground by a rope. The rope has a force of 100N applied to it and forms an angle of 50 degree to the ground. The coefficient of kinetic friction is 0.50 for this surface.
asked by Katy needs help on March 6, 2017 
Trig
Solve ABC if C=90 degrees, B=20 degrees, and b=10. Round measures of side to the nearest tenth and measures of angles to the nearest degree. So all I need to do for this problem is find A,a,c right? I know that A=70 b/c 90+20=110 and 180110=70 but how do
asked by Jon on March 6, 2008 
Precalculus
Assume the two planes are heading 'towards P'. For now, let's not get too wound up about the x and y aspects. We'll always 'know' the two places are at right angles to each other. First let's create two equations that represent the 'location' of each
asked by Samuel on September 9, 2012 
algebra
Two planes left simultaneously from the same airport and headed in the same direction towards another airport 1800 km away. The speed of one of the planes was 100 km/hour slower than the speed of the other plane, and so it arrived at its destination 36
asked by Anonymous on March 9, 2016