Wednesday
December 17, 2014

Posts by Jose


Total # Posts: 361

math
three coins, a half-dollar, quarter, nickel are tossed at the same time. to say that there is an outcome xyz means that the half-dollar, landed x, the quarter landed y, and the nickel landed z. the eight equally likely possibilites can be listed as follows: HHH HHT HTH HTT THH...
May 14, 2012

science-biology
what do cells do?
May 12, 2012

Psyc Research Methods
Yes, there is
May 2, 2012

Applied physics
two men are carrying a 12m uniform ladder on their shoulders. Man A is 1.0m from one end, and man B is 3.0m from the other end. If the beam has a mass of 200kg, determine the load supported by each man.
March 31, 2012

chemistry
Jessica's teacher has asked her to bring her 0.40 moles of sodium chloride to the laboratory. She should bring approximately _______ grams.
March 29, 2012

Biology
Spermatozoa and Oocytes... I thnk it should be that..
March 24, 2012

Math
For a particular mass of gas, the volume (Vcm^3) and pressure (Pcm) of mecury (Hg) are related by P=kV^n, where k and n are constants. Reduce the relation to a linear one and determine the values of k and n given that when v=110cm^3, P=50.3cm and when V=230cm^3, P=18.6cm
March 24, 2012

Math
For a particular mass of gas, the volume (Vcm^3) and pressure (Pcm) of mecury (Hg) are related by P=kV^n, where k and n are constants. Reduce the relation to a linear one and determine the values of k and n given that when v=110cm^3, P=50.3cm and when V=230cm^3, P=18.6cm
March 24, 2012

Physics
A car starts from rest and accelerates uniformly to a speed of 50km/h in 18s. If the wheels of the car are 70cm in diameter. Calculate; a.The final angular velocity of the wheels b.angular acceleration
March 22, 2012

Physics
A mass m=400g hangs from the rim of a wheel of radius r=15cm. When released from rest, the mass falls 2.0m in 6.5sec. Find the moment of inertia of the wheel
March 21, 2012

applied physics
you are standing on a 100m tall buiding above a street and your friend is standing vertically below the building. When you drop a stone, your friend simultaneously throws the identical stone as yours at a speed of 50m/s in the same straight line. Calculate the time taken for ...
March 18, 2012

Geometry
A grid shows the positions of a subway stop and your house. The subway stop is located at (7, -6) and your house is located at (-9, 5). What is the distance, to the nearest unit, between your house and the subway stop
March 14, 2012

physics
a girl lifts a 160-n load a height of 1 m in a time of 0.5 s. what power does the girl produce
March 14, 2012

applied math
Sorry Orbital speed
March 13, 2012

applied math
if the mean radius of the moon is 1.73x10^6m and its mass is 7.35x10^22kg.determin the average speed?
March 13, 2012

applied chemistry
a 69.3g sample of oxalic ac acid, H2C2O4, was dissolved in 1.000L of solution. How would yo prepare 1.00L of 0.150M H2C2O4 from this solution?
March 8, 2012

applied chemistry
M = 0.0285 mols/0.050 L M = 0.57 mols/L thanks i now know the formular bt hey how would u define Molarity and in what part of living does it apply? Am trying to understand it.
March 7, 2012

applied chemistry
A 50.0mL volume of AgNO3, solution contains 0.0285 mol AgNO3 (SILVER NITRATE). What is the molarity of the solution?
March 7, 2012

MATH
So the answer is X=67
February 20, 2012

Math
Find the volume of the solid generated by revolving the region bounded by y= 5 cosh (x) and y= 5 sinh (x) between x = 0 and x = 1 about the x-axis
February 10, 2012

Language arts and writing
The first compact microwave ovens were sold in 1960. Everybody didn't use them until the 1980's.
February 6, 2012

chemistry
Hey, if all hope is lost try this...let me know if it makes sense.... use stoicheometry. (287 amu of Li/ 1 )*( 1 mol/ 6.02 x 10^23) * ( 6.94g Li/ 1 mol) this makes more clearer as fractions on paper....hope this helps. i did this and got 3.31 x 10^-21. (numbers may vary ...
January 3, 2012

Math
X=x^2+3x-10. Graphed as a parabola Include the x,y table please. And line of symmetry.
December 7, 2011

Math
4x^2-4 radical3x +3=0 Using quadratic formula
December 4, 2011

Math
9t^2-3t=0. Solve using quadratic formula
December 1, 2011

geometry
If AC is 50 feet, and AB is 40 feet, which is the length of BC?
November 29, 2011

algebra
the volume of a cylindrical tank is V(h)= pi(h^3+6h^2+9h) The volume of a tank can be modeled by V(L)= L(L-3.2)(L+6.8)
November 12, 2011

calculus
Why do we end up with f(x) instead of f(t) on the second fundamental theorem of calculus?
November 7, 2011

calculus
Why do we end up with f(x) instead of f(t) on the Second Fundamental Theorem of Calculus?
November 7, 2011

algebra
b) The sales representative later indicates that there are two and one quarter as many homes available with the first floor plan than the second. Write an equation that illustrates this situation. Use the same variables you used in part a. Express the answer with decimal ...
October 30, 2011

Physics
A 61 kg skateboarder wants to just make it to the upper edge of a "quarter pipe", a track that is one-quarter of a circle with a radius of 2.89 m. What speed does he need at the bottom?
September 29, 2011

physics
A driver traveling at 25 mph in a school zone can brake to an emergency stop in 8 ft. Under similar conditions, what would be the braking distance if the car were traveling at 40 mph?
September 12, 2011

Math
How to find the missing values 0.38=(3*0.1)+(_*_)
September 6, 2011

verbs
thanks
August 2, 2011

verbs
enjoys
August 2, 2011

verbs
what are the verbs
August 2, 2011

verbs
kris enjoys action movies at the theatre
August 2, 2011

chemistry
Calculate the relative molecular mass of a gas if a 500cm3 sample at 20¢ªC and 1 atomic mass of 0.66g
June 21, 2011

american history
Which of the following statements about the Southern planter's world is most accurate?
June 2, 2011

english
at what point does abigail first began feeling cold?what effect does this event have on danforth?
May 17, 2011

ethics and social responsibilty
what are some examples,explore the challenges Goodman presents to relativism
May 9, 2011

I need help to unscramble these words in spanish
Seclaalue
April 26, 2011

Chemistry
In this experiment the only source of Ca2+ ions is Ca(OH)2. Using the experimental Ksp value, calculate the slubility of Ca(OH)2 (in mol/L) in .30 M NaOH. Experiment Ksp = 1.69x10^-5
April 24, 2011

physics
For part a) T1 = Upper cord T2 = Lower cord theta = angle between vertical rod and upper cord = arcos(1/1.25) R = radius of circular motion = sqrt((1.25^2) + 1^2) M = mass of object T1sin(theta)+T2sin(theta) = (MV^2)/R Solve for V Turn your V (should be in m/s) into revs/min. ...
April 21, 2011

chem
How many liters of 12.3 molar NaOH stock solution will be needed to make 12.4 liters of a 1.2 molar NaOH solution? Show the work used to solve this problem.
April 6, 2011

Science
describe how our solar system formed.
March 29, 2011

Chemistry
How much water can be produced from the complete reaction of 2.56 L of oxygen gas, at STP, with hydrogen gas answer in units of g.
March 29, 2011

Chemistry
How much water can be produced from the complete reaction of 2.56 L of oxygen gas, at STP, with hydrogen gas answer in units of g.
March 29, 2011

algebra 1
Triple a number plus 7 results in 16. What is the number?
March 29, 2011

chemistry
How many moles of molybdenum are in 1.235 g
March 3, 2011

physics
In the figure , the total resistance is 10.0 kOmega, and the battery's emf is 28.0 V. If the time constant is measured to be 40.0 mu s. Calculate the total capacitance of the circuit.Calculate the time it takes for the voltage across the resistor to reach 15.0 V after the ...
March 2, 2011

Chemistry
How many grams of MgCl2 are required to make 350mL of a 0.56M solution of MgCl2?
February 28, 2011

vareiables
can you help me because i need a good science fair project
February 24, 2011

Algebra
Evaluate the exprestion: 2(3x+1)/-4 for each value of "x". A.x=9 B.x=2 C.x=-1 D.x=14
February 17, 2011

6th grade science
true or false. genes are a small section of dna on hromosomes tha have information about a trait.
February 7, 2011

math
y=-2x+1
February 3, 2011

physics
A 5.75 µC and a -2.61 µC charge are placed 19.8 cm apart. Where can a third charge be placed so that it experiences no net force?
January 25, 2011

physics
two point charges have a total charge of 277 µC. When placed 2.00 m apart, the force each exerts on the other is 20.8 N and is repulsive. what are the charges on both?
January 25, 2011

physics
What is the magnitude of the force a +23 µC charge exerts on a +3.5 mC charge 49 cm away?
January 25, 2011

statistics
A researcher wants to determine if two brands of cigarettes contain the same amount of nicotine. The data is shown in the table. With a significance level of 0.05 to that conclusion can be reached. Set the interval for a confidence of 95% Sample A: 40.3 37.5 37 41.7 29.8 33.5 ...
January 23, 2011

statistics
A company is considering installing new machines to assemble its products. The company is considering two types of machines, but it will buy only one type. The company selected eight assembly workers and asked them to use these two types of machines to assemble products. The ...
January 23, 2011

statistics
A researcher wants to determine if two brands of cigarettes contain the same amount of nicotine. The data is shown in the table. With a significance level of 0.05 to that conclusion can be reached. Set the interval for a confidence of 95% Sample A: 40.3 37.5 37 41.7 29.8 33.5 ...
January 23, 2011

statistic
A company is considering installing new machines to assemble its products. The company is considering two types of machines, but it will buy only one type. The company selected eight assembly workers and asked them to use these two types of machines to assemble products. The ...
January 23, 2011

calculus
A cylindrical metal can with an open top is to be constructed. the can must have a capacity of 24pie cubic inches. the metal used to contruct the bottom of the can costs 3 times as much as the metal in the rest of the can. Find the dimensions(radius and height) of the can that...
January 17, 2011

math
what is the resipical of 9
January 13, 2011

chemistry
Calculate the temperature change in the water upon complete melting of the ice. Hint: Determine how much heat is absorbed by the melting ice and then use q =mC*Delta T to calculate the temperature change of the 314 g of water. under the following conditions: A 14.7 g ice cube ...
November 17, 2010

chem
You can use the Density equation: Density=Mass/volume. They give you the volume and density so you need to manipulate the Density equation to solve for mass. That should give you the grams of acetone in the bottle of acetone and you can use that to solve for the acetone ...
November 15, 2010

Chem
A 12.3 vessel was found to contain N2, Ar He, and He. The total pressure in the vessel was 987 torr and the partial pressures of nitrogen, argon, and helium were 44 torr, 486 torr, and 218 torr, respectively. What was the pressure of neon in the vessel?
November 11, 2010

Math
If you have 21tiles and there are twice as many blue than red and twice as many red than green how many red green and blue are there.
November 10, 2010

Biology
When living cells break down food molecules, energy is A)stored as a phosphate group added to ADP. B)stored as ATP. C)released as heat. D)all of the above
October 28, 2010

project management
How did it contribute to gross underbids and successive cost escalations?
October 26, 2010

chemistry URGENT!
No you fuc*ing morons...
October 24, 2010

Enaglish
avoiding predicate subject mismatching how to correct this sentence Measles is where a viral infection causes skin eruptions.
October 21, 2010

6th grade
how to solve equations containing integers?
October 19, 2010

ALgebra
use slopes to show that the triangle with vertices (-2,7), (6,9) and (3,4) is a right triangle. write an equation of the line that has y-intercept 5/7 and is parallel to the graph of 6x-3y=1
October 19, 2010

ALgebra
find an equation of the line containing, (4,-2) and parallel to the line containing (-1,4) and (2,-3) find an equation of the line containing (-1, 3) and perpendicular to the line containing (3,-5) and (-2,7)
October 19, 2010

math
Tell how you could use line to determine which of two number is greater
October 18, 2010

math
Write three number that are greater than 1,543,000 but less than 1,544,000
October 18, 2010

algebra
one plane left an airport at 11:30 am. A second plane, traveling at 320 mph left the same airport at 1:00 pm and overtook the first plane at 4:30 pm. At what speed was the first plane traveling?
October 17, 2010

math
Alieta was playing the "win a flat"game and had 7 ten rods and 3 unit squares. She rolled a 9. How many ten rods does she have after the exchanges are made?
October 12, 2010

Computer Flowcharts
no clue
October 12, 2010

geography
if a city has a latitude of 45 degree south, what can you infer about their climate.
October 12, 2010

english
identify the verb,subject in the sentence.a cloud of fruit flies hovered over the banana
October 7, 2010

math
A video game store charges a monthly membership fee of $7.50 but the charge to rent each movie is only $1.00 per movie. Another store has no membership fee but it costs $2.50 to rent each movie. How many movies need to be rented each month for the total fees to be the same ...
September 26, 2010

Math
So if i eliminate C first would the resulting two equations be: (8/3A) + (8/3B) = 1 (1/A) + (1/B) = (-8/20) ???????
September 24, 2010

Math
A and B caan finish typing a manuscript in 8/3 days; B and C together, in 40/9 days; A and C together in 20/7 days. How long will each, working alone type the manuscript?
September 24, 2010

calculus
I have an even number of coins in my pcket exactly one third of them are dimes. Draw or stampo the coins i could have in my pocket. Record thir value.
September 21, 2010

Trig
verify following trigonometric identities. 1/sec0tan0 = csc0 = sin0
August 24, 2010

Individual Income
19. Dan's taxable income falls in the 15% tax bracket. Included in his taxable income is $5,000 of ordinary dividends, of which $2,000 are qualified dividends. The amount of tax Dan will pay on his qualified dividends is: a. $300. b. $0. c. $250. d. $100. e. $200.
June 30, 2010

math
how many combinations of coins equal 2.00 when given 12 quarters, 10dime ,10 nickels and 20 pennies.
June 9, 2010

Math 116
yea sorry
June 6, 2010

Math 116
The lengths will have to be greater than 24 or 24<
June 6, 2010

math
What's that formula called?
June 6, 2010

math
Okay I got this question on a test. I am not sure what I am supposed to do here. Can you show me how I would go about solving this. A basketball player can jump 33in vertically. Find his hang time. Round to the nearest tenth. Thanks
June 6, 2010

math
what is 4j-3=5
June 4, 2010

rational expressions
1)Can z+6/z+1 be reduced any further? 2)Add and simplify (v/v^2+8v+16) + (4/v^2+7v+12) 3)For this second binomial do you change the the sign of the second term? Subtract and simplify (1-y/y-2) - (9y-8/2-y) 4)Solve (4/5)+(1/2)=(1/x) 5)(8/x)=(9/x)-(1/2)
May 31, 2010

math
1)Can z+6/z+1 be reduced any further? 2)Add and simplify v/v^2+8v+16 + 4/v^2+7v+12 3)For this second binomial do you change the the sign of the second term? Subtract and simplify 1-y/y-2 - 9y-8/2-y 4)Solve 4/5+1/2=1/x 5)8/x=9/x-1/2 Thanks!
May 31, 2010

introductory algebra
I had these problems on my test and for some reason got them wrong. Here are the problems: Solve: x-y=9 x+y=1 The test states that the answer is (5,-4) I've checked ,y work and used substitution to solve this and still get x=4, y=-5. The second problem is: Solve the system...
May 23, 2010

How Children Learn
. A Correct 2. C Correct 3. C Correct 4. A Correct 5. C Correct 6. A Correct 7. D Correct 8. C Correct 9. A Correct 10. C Correct 11. D Correct 12. B Correct 13. A Correct 14. A Correct 15. B Correct 16. C Correct 17. C Correct 18. B Correct 19. C Correct 20. A Correct
May 19, 2010

english
What does this mean? If you are home studying…I hope you’re at least doing so outside! I am foreign exchange and I do not understand this. Thank You.
May 4, 2010

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