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August 30, 2014

# Posts by Jordan

Total # Posts: 751

Math
Write an equation for the table: x: 8,16,24,32 y: 1,2,3,4
March 7, 2011

Math
Write an equation for the table: x: 8,16,24,32 y: 1,2,3,4
March 7, 2011

Math
Write an equation for the table: x: 8,16,24,32 y: 1,2,3,4
March 7, 2011

Math
Write an equation for the table: x: 8,16,24,32 y: 1,2,3,4
March 7, 2011

Chemistry
The amount of energy released by burning a fuel source, measured in energy per mass, is called fuel value. If all the energy obtained from burning 1.3 pounds of butane (fuel value 10.85 kcal/g) is used to heat 122 kg of water at an initial temperature of 20.9 degC, what is the...
February 28, 2011

General Chemistry (College LvL)
When a 4.00g sample of KBr is dissolved in water in a calorimeter that has a total heat capacity of 2.908 kJ x K^-1, the temperature decreases by .230 K. Calculate the molar heat of KBR
February 28, 2011

Physics
A 6-kg bowling ball with a radius of 14 cm is spinning about a vertical axis (with its center of mass motionless) at an initial rate of 3 turns per second. Friction with the floor, however, causes the bowling ball to rotate more and more slowly until it stops after about 22s. ...
February 22, 2011

Physics
Displacement vector [3, 0 , -2] and [-1,5,2]displacement vector , both measured in meters. Find the components of the cross product of these vectors.
February 22, 2011

physics
At a certain time, a 55-kg person is 25 m due north of you and is walking at a speed of 1.2 m/s exactly southwest. What are the magnitude and direction of this person’s angular momentum about you?
February 22, 2011

physics
travelling at 90km/hr except for a 30 minute rest stop. Average speed for the trip is 78km/hr. what is the total travelling time and what is the total distance travelled?? thanks
February 7, 2011

Basic Math
February 6, 2011

Basic Math
A student claims that 2/3 = 6/7 because if you add 4 to both the top and the bottom of a fraction, the fraction does not change. How do you respond? I am a bit confused. Don't you need to have a common denominator?
February 6, 2011

Science
When u kick a stone your foot exerts force on the stone and the stone exerts a force ? in size and ? in direction on your foot
February 5, 2011

Chemistry
The following information is given for ethanol, C2H5OH, at 1atm: boiling point = 78.4oC Hvap(78.4oC) = 38.6 kJ/mol melting point = -115oC Hfus(-115oC) = 5.02 kJ/mol specific heat liquid = 2.46 J/goC At a pressure of 1 atm, what is H in kJ for the process of condensing a 40.8 g...
January 24, 2011

math 10
how do i work out the answer to: "how many integer values are there for k for which 4x^2 + kxy - 9y^2 is factorable?"
January 24, 2011

math
each box has 10 pencils . how many pencils do 3 boxes have ?
January 21, 2011

math
how to isolate a variable with a component. 60+80x1 over 2 to the exponent of "T" over 30+20 solve for T
January 19, 2011

math
how to isolate a variable with a component. 60+80x1 over 2 to the exponent of "T" over 30+20
January 19, 2011

You divide by -1
January 13, 2011

Math
A set of data has a mean of 35 and an outlier of 100. You find the mean without the outlier. Which of the following best describes your new mean?
January 11, 2011

english
help me please!!!!! The manner in which action is presented indicates verb: mood. tense. voice.
January 11, 2011

calculus
How do you find the derivative of (-2(x^2+1))/((x^2-1)^2) ? I have the answer which is: (4x(3+x^2))/(x^2-1)^3) I can't figure out my mistake when I'm doing it though. Could you solve it step by step?
January 6, 2011

Social Studies
How have the uses of Bamboo changed since 1980 until now?
January 5, 2011

MATH
how do i solve this into a proportion, 3oz for $1.65; 5oz for x dollors December 18, 2010 Physics Consider two vectors where F1 = 40 N, F2 = 57 N, and \theta _{1} = 240o and \theta _{2} = 25o, measured from the positive x-axis with counter-clockwise being positive. What is the magnitude of the equilibriant? December 14, 2010 8th grade math i need help December 13, 2010 math what fraction strips would you use yto find the sum of 3/8 and 4/8? explain December 9, 2010 cal 1 Find the dimensions of the rectangle of largest area that has its base on the x-axis and its other two vertices above the x-axis and lying on the parabola. (Round your answers to the nearest hundredth.) y = 7 - x^2 December 8, 2010 Cal Find the slope of the tangent line to the curve at (2,1) x/y + x^2y^2 = 6 December 8, 2010 physics A boy pulls his little brother in a little red wagon. He keeps the handle horizontal to the ground. His little brother and the wagon weigh 40 kg. How much tension will the boy have to place on the wagon's handle to get it moving from a standstill? December 6, 2010 English In Invisible Man, the main character disproved of Tod Clifton and didn't like that he was selling sambo dolls. Why would he then make Clifton seem like a hero, and give a grand speech about him at his funeral? Was it because he wanted to impress others with his oratorical ... November 27, 2010 History When was the evolution of the socio- political milieu during the colonial period including Protestant Christianity's impact on colonial social life November 15, 2010 Cal A plane flying horizontally at an altitude of 3 mi and a speed of 480 mi/h passes directly over a radar station. Find the rate at which the distance from the plane to the station is increasing when it is 6 mi away from the station. (Round to the nearest whole number.) November 11, 2010 math a deposit of$2500 grew to $3325 after six years. what is the final value of a deposit of$7500 at the same interest rate for the same period of time?.
November 9, 2010

Chemistry
Use a combustion reaction of liquid ethanol in air as a source of work, assuming temperature is 25 deg C, air pressure is 1atm and all products are gases with partial pressures of 10atm each. How high can one lift a 1000kg weight by burning 100g of ethanol? *oxygen is 21% (by ...
November 7, 2010

Physics
A baseball is popped straight up into the air and has a hang-time of 6.25 s. Determine the height to which the ball rises before it reaches its peak.
November 1, 2010

Chemistry
you have them in order already, from weakest to strongest.
October 31, 2010

Physics-Kinetic energy
the only formula you will need for both of these questions is : E = 0.5mv^2 E = kinetic energy (J) m = mass of object (kg) v = velocity of object (m/s) you should be able to go from here, just sub in the values.
October 30, 2010

physics
use the formula F=ma remember m has to be in kg
October 30, 2010

Earth Science
the tilt of the earth and the rotation of the earth around the sun. try to picture the scenario, as the earth revolves around the sun with the tilt that it has, half of the year the northern hemisphere will be closer to the sun and the other half of the year the southern ...
October 30, 2010

Physics kinetic energy
because v is the only thing changing the value of m is not relevant. to find out what would happen to the energy we compare the differences in v ie 10^2 = 100 5^2 = 25 since the new v value is a quarter of the previous value the answer is (d) alternatively, your reasoning ...
October 30, 2010

Physics acceleration
a = (v-u)/t v = final velocity (m/s) u = initial velocity (m/s) t = time taken for change in velocity (s) a = acceleration (m/s^2)
October 30, 2010

maath
draw the graph of y = 3^x then look to see where y = 9, this is where 3^x = 9
October 29, 2010

Physics
On an open-reel tape deck, the tape is being pulled past the playback head at a constant linear speed of 0.372 m/s. (a) If the radius of the film taken up so far (as shown in the upper part of the drawing) is 0.0576 m, find the angular speed of the take-up reel. ____ rad/s (b...
October 25, 2010

geometry
How would you figure this question out? :The measures of two sides of a triangle are 8 and 11. Use an inequality to express the range of the third side, m.
October 24, 2010

physics
An electric drill starts from rest and rotates with a constant angular acceleration. After the drill has rotated through a certain angle, the magnitude of the centripetal acceleration of a point on the drill is twice the magnitude of the tangential acceleration. What is the ...
October 24, 2010

Chemistry 1
What is the minimum amount of a 6.0 M solution of sulfuric acid necessary to produce 25 grams of hydrogen gas if the molar ratio in the chemical reaction is a 1:1
October 21, 2010

Physics
A force of 165 N is needed to keep a small boat moving at 2.57 m/s. What is the power required to keep the boat moving at the steady speed? >> I understand that P=Fv but I don't understand the second question. If the resistive force of the water increases with the ...
October 20, 2010

Physics
A force of 165 N is needed to keep a small boat moving at 2.57 m/s. What is the power required to keep the boat moving at the steady speed? >> I understand that P=Fv but I don't understand the second question. If the resistive force of the water increases with the ...
October 20, 2010

MATH
SHOW IN A SKETCH 3/5 OF AN HOUR
October 18, 2010

Physics
A ball is attached to one end of a wire, the other end being fastened to the ceiling. The wire is held horizontal, and the ball is released from rest (see the drawing). It swings downward and strikes a block initially at rest on a horizontal frictionless surface. Air ...
October 15, 2010

A polygon has a perimeter of 24mm. Find the new perimeter after a scale factor of 1/4 is applied?
October 14, 2010

College Physics
A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. The total mass of the wagon, rider, and rock is 96.5 kg. The mass of the rock is 0.250 kg. Initially the wagon is rolling forward at a speed of 0.460 m/s. ...
October 14, 2010

science
how many hm are in 726.5 dm ?
October 8, 2010

physics
The drawing shows a version of the loop-the-loop trick for a small car. If the car is given an initial speed of 4.5 m/s, what is the largest value that the radius r can have if the car is to remain in contact with the circular track at all times?
October 8, 2010

CALC
Ok, I was half right. The formula works for cubes and squares if you think of the area of a square being 4r^2, and the volume of cube being 8r^3, where r is the radius and x=2r
October 7, 2010

CALC
Nevermind, I lied.
October 7, 2010

CALC
You have to start from the origin. Try calculating it in terms of r, where x=2r. You will get the right answer
October 7, 2010

Intermediate Algebra
Determine whether the point (1, 8) is a solution of the system 2x + 6y = 50 10x + 0y = 10 by substituting the point into each equation. So far I have: 2x=6y=50 y=50-2x 10x+10y=10 10x+0(50-2x)=10 10x+0=10 x=10 y=50-2x y=50-2(1) y=50-2 y=48 PLEASE HELP! I'm lost. I've ...
October 7, 2010

Physics
A) Calculate the mass of the sun from the radius of the earth's orbit (1.50×1011 m), the earth's period in its orbit, and the gravitational constant G. B) What is the density of the sun ? (The sun's radius is 6.96×108 m). Notice how it compares with the...
October 6, 2010

math
I neeeed help on this problem 3x-5y=7 5x-2y=-1 It's addition method and I can't figure it out plleeaaaassse help me
October 4, 2010

math
October 4, 2010

statistics
Event Probability Too much enamel 0.25 Too little enamel 0.2 Uneven application 0.35 No defects noted 0.42 (1) What is the probability of a paint defect? What is the probability of a paint defect which includes an improper amount of paint?
September 29, 2010

math
Event Probability Too much enamel 0.25 Too little enamel 0.2 Uneven application 0.35 No defects noted 0.42 (1) What is the probability of a paint defect? What is the probability of a paint defect which includes an improper amount of paint?
September 29, 2010

AP U.S. history
what additional safeguards were proposed by thomas jefferson and james madison in the virgina and kentucky resolutions, and what werethe implications of these resolutions with regard to the growth of the centeral government?
September 26, 2010

trig
Let µ be an angle in standard position that contains the point with co- ordinates (-5;-12) on its terminal side. Determine the values of the six trigono- metric functions of angle µ.
September 23, 2010

math
Assume that there are 13 frozen dinners: 5 pasta, 4 chicken, and 4 seafood dinners. The student selects 5 of them. What is the probability that at least 2 of the dinners selected are pasta dinners?
September 20, 2010

physics
d=vot+1/2at^2 vf=vo+at V=d/t Use these equations to solve the problem.
September 19, 2010

Angle QRS is a straight angle. If a=2c, c=2b, and b=d/3, what are the values of a,b,c,and d? a+b+c+d = 180
September 13, 2010

space
How could measuring the orbit of a comet help scientists understand when it will next be visible from Earth?
September 9, 2010

Math
Draw a number line make sure the following numbers are on your number line 1,472: 1,560: 1,481
September 9, 2010

Math/College Algebra
1.)Complete the square to find all real solutions of equation 3 x^2 + 4 x - 1 = 0. X1= X2= 2.)\sqrt{7 x - 9} + 6 = 3x there are two solutions 3.)4 <= 5 x - 4 <10 4.)(x/4x-16)-7 = (1/x-4) 5.) (1/R) = (1/R1)+ (1/R2) for R1
August 29, 2010

math
It's from a website called WebWork where we do the homework on.
August 22, 2010

math
wow thank you so much! i spent hours on that problem. thanks again for the help.
August 22, 2010

math
1.)The polynomial 729 x^{3} - 1 y^{3} can be factored into the product of two polynomials, A * B where the degree of A is greater than the degree of B. Find A and B. 2.)The polynomial 16 a^{6} + 8 a^{3}b + 1 b^2 - 49 c^{6} can be factored into the product of two polynomials, A...
August 22, 2010

math
The polynomial 14 x^3 + 8 x^2 + 21 x + 12 can be factored into the product of two polynomials, A * B where the degree of A is greater than the degree of B. Find A and B.
August 22, 2010

Econ
1.ÊA production-possibilities curve indicates the:Ê A.ÊCombinations of goods and services an economy is actually producing. B.ÊMaximum combinations of goods and services an economy can produce given its available resources and technology. C.Ê...
July 11, 2010

Chemistry
0.37 moles of xenon gas (Xe) are captured in a 1.0-L container at 25 degrees celcius. Given the van der Waals constants for Xe, calculate the pressure of Xe gas inside the container?
July 6, 2010

dynamath
the value of 2 coins is 35 cents. one of the coins is not a quarter. what are the 2 coins
June 7, 2010

chemistry
a mixture of 3 gases a, b and c is at a total pressure of 6.11 atm the partial pressure of gas a is 1.68 atm, that of gas b is 3.89 atm. what is the partial pressure of gas c?
May 24, 2010

math
solve this equasion-4x-18+3x+20=4
May 24, 2010

math
thank ya soooo much...this really helped ;)
May 20, 2010

Integrated Chem/Phys
If the density of a 225g stuffed plush toy is 1.25g/cm^3 and the water volume in a glass is 25 ml, find the new level of water after the toy is pushed under water. I know that D=m/v so 1.25=225/v so 1.25/225=v so I got .005 which cannot possibly be right. I am obviously doing ...
May 6, 2010

Science
A car is traveling at 15 m/sec. Ten minutes later it is traveling at 70 m/sec. What is the acceleration?
May 2, 2010

math
A rectangular prism with a base area of 38 sq in & height of 9 in is filled to the top with water. The water is poured into fish tank that is 21 in by 8 in and is 10 in tall. How high is the water in the fish tank?
April 20, 2010

college
Two copper rings are dropped from a region where no magnetic field exists into a region where a strong magnetic field exists. The rings are identical except for a break in one of them. What can happen to the rings' motion as they fall through the magnetic field?
April 13, 2010

physics
The polar ice caps contain about 2.76E+19 kg of ice. This mass contributes negligibly to the moment of inertia of Earth because it is located at the poles, close to the axis of rotation. Estimate the change in the length of the day that would be expected if the polar ice caps ...
April 9, 2010

physics
In the figure below, a constant horizontal force Fapp of magnitude 18 N is applied to a wheel of mass 12 kg and radius 0.50 m. The wheel rolls smoothly on the horizontal surface, and the acceleration of its center of mass has magnitude 0.50 m/s2. What is the friciotnal force ...
April 7, 2010

physics
If a 31.0 N·m torque on a wheel causes angular acceleration 22.0 rad/s2, what is the wheel's rotational inertia?
April 7, 2010

math
Show 1/4 of a set of 8 counters. How many counters is that?
April 7, 2010

biology
How could a substance that stops the sythesis of mRNA cause the liver to stop functioning(the death of liver cells)?
March 23, 2010

Object Orientation
WHAT IS THE MODULARITY IN OOP? AND WHAT IS HIERARCHY? AND WHATS THE DIFFERENCE BETWEEN BOTH AND INHERITANCE?
March 15, 2010

Object Orientation
Use your own words to describe or Explain the 4 basic principles of Object Orientation. ( Abstraction, Encapsulation, Modularity, and Hierarchy) Thanks for the help
March 15, 2010

physics
Weight is equal to the mass of the object multiplied by the force of gravity attracting the object. giving the equation W=mg with mass in kg (i)W=2000x9.8 = 19,600N (ii) for this one we need to work out what the force of gravity will be at an altitude of 1000km above the Earth...
March 10, 2010

math
place each of them on a common denominator of w^2, so it will become (49/w^2) + (8/w^2) = (57/w^2)
March 9, 2010

PHYSICS
alright then, I'll check out some books. Thanks for your help.
March 7, 2010

PHYSICS
Can you explain more of the theory side? with the double slit experiment, photoelectic effect, compton effect, reflection, refraction, stuff like that?
March 7, 2010

PHYSICS
How can an election be particle and a wave at the same time?
March 7, 2010

geometry
2x-3+4xx+1+2xx-3xx-5
March 4, 2010

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