Saturday

February 28, 2015

February 28, 2015

Total # Posts: 582

**Physics**

An elevator manufacturing company is stress-testing a new elevator in an airless test shaft. The elevator is traveling at an unknown velocity when the cable snaps. The elevator falls 2.50 meters before hitting the bottom of the shaft. The elevator was in free fall for 0.900 ...
*November 29, 2010*

**social studys **

what is two spanish artifacts?
*November 29, 2010*

**social studys **

what is two spanish artifacts?
*November 29, 2010*

**Math. HELP!**

A cylinder is to be made of circular cross-section with a specified volume. Prove that if the surface area is to be a minimum, then the height of the cylinder must be equal to the diameter of the cross-section of the cylinder. Maybe it's the wording, but I have not been ...
*November 17, 2010*

**3rd grade**

55 in the emptier jar and 95 in the other jar.
*November 17, 2010*

**A&P**

When a virus has taken over
*November 17, 2010*

**physics (work shown)**

.63 x 9.8 = 6.174 not 2.52
*November 17, 2010*

**Math. HELP!**

Reiny. You. Are. God. Thank you :D
*November 17, 2010*

**Math. HELP!**

A cylinder is to be made of circular cross-section with a specified volume. Prove that if the surface area is to be a minimum, then the height of the cylinder must be equal to the diameter of the cross-section of the cylinder. Maybe it's the wording, but I have not been ...
*November 17, 2010*

**Media Studies**

The loudest person gets heard, doesn't matter if what they say makes sense.
*November 17, 2010*

**Math. HELP!**

A cylinder is to be made of circular cross-section with a specified volume. Prove that if the surface area is to be a minimum, then the height of the cylinder must be equal to the diameter of the cross-section of the cylinder. Maybe it's the wording, but I have not been ...
*November 17, 2010*

**science**

throw the jet pack in the opposite direction of where the space station is. The equal opposing forces will mean that throwing the pack will actually propel you in the opposite direction that you threw it in, and since there is no friction in space, you won't stop until you...
*November 17, 2010*

**Math**

yes they are equal. they can help in finding the area of a triangle because it shows that it doesn't matter if you half the base or the height and multiply them with eachother to get a triangle Triangle = 1/2 * base * height what this is saying is that whether you do (1/2 ...
*November 17, 2010*

**5th grade (thomas)**

wait nevermind, the answer IS 3 7/10 is was reading the question incorrectly, sorry!
*November 17, 2010*

**5th grade (thomas)**

no the answer is not m=3 7/10
*November 17, 2010*

**5th grade**

6 - m = 2 3/10 6 - m = 20/10 + 3/10 6 - m = 23/10 -m = 23/10 + 6 -m = 23/10 + 60/10 -m = 83/10 m = -8 3/10
*November 17, 2010*

**Math**

since 100cm = 1m A = 100cm x 50cm A = 5000cm squared
*November 17, 2010*

**Math**

A cylinder is to be made of circular cross-section with a specified volume. Prove that if the surface area is to be a minimum, then the height of the cylinder must be equal to the diameter of the cross-section of the cylinder. Maybe it's the wording, but I have not been ...
*November 17, 2010*

**chemistry........help!! =)**

So, MaVa = MbVb implies that for the same mass and volume, neutralization will be possible because of a 1:1 ratio. This is seen in HCL + NaOH reaction: HCl + NaOH = NaCl + H20 As you can see no balancing, and there is the same coefficient in front of HCl as there is NaOH (it&#...
*November 17, 2010*

**Calc**

What is the area that this encloses? r = 4cos(3θ)
*November 14, 2010*

**9th grade**

how do i use the distributive property???
*November 11, 2010*

**Maths**

What is the answer to the following using sicentific calculator 64-1/6
*November 1, 2010*

**physics**

A 3.0-kg body is initially moving northward at 15 m/s. Then a force of 15 N, toward the east, acts on it for 4.0 s. (a) At the end of the 4.0 s, what is the body’s final velocity? (b) What is the change in momentum during the 4.0 s?
*October 26, 2010*

**Physics **

Three blocks, connecting ropes, and a light frictionless pulley comprise a system, as shown. An external force P is applied downward on block A (12Kg). The system accelerates at the rate of 2.5m/s^2. The tension in the rope connecting block B (18Kg) and block C equals 60N. ...
*October 25, 2010*

**Physics**

Side note: Since Olaf wasn't moving initially, molaf*Vi2 = 0
*October 24, 2010*

**Language Arts**

Thanks
*September 29, 2010*

**Language Arts**

What are the appositives in this sentence:Football, a game loved by millions of people, is becoming even more popular.
*September 29, 2010*

**3rd grade**

complete to show how you can find the sum by making a ten, hundred, or thousand. 9+5=14 9+1+ blank 10+ blank blank 90+50=140 90+10+blank 100+blank blank 900+500=1400 900+100+blank 1000+blank blank
*September 29, 2010*

**cpcc**

A 134 N bird feeder is supported by three cables as shown in Figure P4.17. Find the tension in each cable. right cable 1 N left cable 2 Your response differs from the correct answer by more than 10%. Double check your calculations. N
*September 28, 2010*

**cpcc**

In Figure P4.30, m1 = 10.0 kg and m2 = 4.5 kg. The coefficient of static friction between m1 and the horizontal surface is 0.60 while the coefficient of kinetic friction is 0.30. Figure P4.30 (a) If the system is released from rest, what will its acceleration be? 1 m/s2 (b) If...
*September 27, 2010*

**cpcc**

A frictionless plane is 10.0 m long and inclined at 33.0°. A sled starts at the bottom with an initial speed of 4.30 m/s up the incline. When the sled reaches the point at which it momentarily stops, a second sled is released from the top of the incline with an initial ...
*September 27, 2010*

**trig**

HOW DO YOU SOLVE THIS PROBLEM, sin theta>0,cos theta>0
*September 21, 2010*

**geometry**

the measure of angle xyz is 140degree what is the value of x (2x+6)degree
*September 20, 2010*

**CP Biology**

At what temperate are potassium nitrate and potassium chloride equally soluble?
*September 16, 2010*

**college physics**

A car starts has a position (in meters) given by x=kt^3 +2t where k is a constant ans t is in seconds. The velocity (in m/s) of the car at t=1 is:
*August 24, 2010*

**college physics**

Each of four particles moves along an x-axis. Their coordinates (in meters) as functions of time (in seconds) are given by: Particle #1: x(t)=2t^2-4 Particle #2: x(t)= -3t-4 Particle #3: -2t^2-4 Particle #4: 2 *[sq. root (t+1)] -4 Which of these particles are speeding up for 0...
*August 24, 2010*

**college physics**

An object thrown vertically upward with initial velocity from the surface of the Earth reaches a height H before falling back toward the Earth. If initial velocity is doubled, the object reaches a maximum height equal to ________. Ignore air resistance.
*August 24, 2010*

**math**

tropical pools sells an above ground model for p dollars each the monthly revenue for this model is given by the formula R(p)=-0.08p^2+300p revenue is the product of the price p and the demand(quanity sold) a.) factor out the price on the right hand side of the formula b.) ...
*August 5, 2010*

**PSYCHOLOGY**

1 a 2 a 3 d
*July 17, 2010*

**chemistry**

Thank You, i got it. The answer was 8.7
*July 12, 2010*

**chemistry**

When you set up the ICE chart, are you supposed to bring the 0.05 to the product side to give you an equation of x^2 / x - 0.05?
*July 12, 2010*

**chemistry**

hello, I can't seem to solve this question. i tried to look up someone else who may have asked this question. I found this girl named Sara,but her answer didn't really help me much because it did not answer the question. What is the pH when enough 0.10 M NaOH Base (in ...
*July 12, 2010*

**chemistry**

When you set up the ICE chart, are you supposed to bring the 0.05 to the product side to give you an equation of x^2 / x - 0.05?
*July 12, 2010*

**chemistry**

Wouldn't the pH be 7 for the strong acid, not 8? I'm confused....
*July 12, 2010*

**chemistry**

hello, I can't seem to solve this question. i tried to look up someone else who may have asked this question. I found this girl named Sara,but her answer didn't really help me much because it did not answer the question. What is the pH when enough 0.10 M NaOH Base (in ...
*July 12, 2010*

**Math problems**

solve- 7 x + 2 -- ---- 24 = 12 x over 3 = 224 over 720
*July 8, 2010*

**Calculus**

When air expands adiabatically (without gaining or losing heat), its pressure P and volume V are related by the equation PV^{1.4}=C where C is a constant. Suppose that at a certain instant the volume is 530 cubic centimeters and the pressure is 97 kPa and is decreasing at a ...
*June 19, 2010*

**us history**

what battle marked the beginnign of U.S involvement in Vietnam
*June 7, 2010*

**Vectors**

If |u| = 10, |v| = 8, and the angle formed between them is 60°, then u · v = .
*May 28, 2010*

**Math**

The probability that a school bus is late is 0.04. How many times would you expect the bus to be late in a 5-week period?
*May 25, 2010*

**Math**

Given the functions f and g below, what is (f o g)(11)? f(x) = x − 20 g(x) = (x − 3)2
*May 25, 2010*

**CALCULUS **

A triangle has verticies A(-2.1,3), B(7,8,-4), and C(5,0,2). Determine the area of triangle ABC.
*May 23, 2010*

**calc **

A parallelogram has area 85cm squared. The side lengths are 10 cm and 9 cm. What are the measures of the interior angles?
*May 23, 2010*

**algebra 2**

There are twenty songs from which a disc jockey can chose five to play on her program. How many different arrangements of songs are possible for the program? Please check my work 20x19x18x17x16
*May 21, 2010*

**algebra 2**

Which should be used a permutation or combination? Determine the number of different ways in which a committee of four can be chosen from a group of twelve members?
*May 21, 2010*

**algebra 2**

In how many different ways can you roll doubles in a monopoly game when you use two die?
*May 21, 2010*

**algebra 2**

if the answer has to be a fraction what would the correct answer be?
*May 21, 2010*

**algebra 2**

You roll a red die and a green die. Find the probability of rolling a four on the red die and a three on the green die.
*May 21, 2010*

**algebra 2**

If a McBurger employee is expected to work four of the seven days in a week, how many different weekly schedules are possible for the employee?
*May 21, 2010*

**algebra 2**

A caterer offers a choice of five desserts from a list of eight for the dessert bar at the prom. How many different groups of desserts could be served?
*May 21, 2010*

**algebra 2**

The nurseryman brought six different varieties of trees to plant in six locations in the park. In how many different ways can he plant the trees
*May 21, 2010*

**algebra 2**

Two cards are randomly drawn from a standard deck replacing the card after the first draw. Find the probability of drawing a Jack followed by an Ace.
*May 21, 2010*

**algebra 2**

The bag contains three red marbles, two blue marbles, and seven yellow marbles. Two marbles are randomly drawn from the bag. What is the probability of drawing a blue marble, replacing it, and then drawing a blue marble?
*May 21, 2010*

**algebra 2**

Two cards are randomly drawn from a standard deck without replacing the card after the first draw. Find the probability of drawing a spade followed by a heart. Please type your answer as a fraction.
*May 21, 2010*

**7th grade math**

stupids
*May 12, 2010*

**Economics**

In general terms, national fiscal policy refers to the way in which a government’s spending and taxation policies are able to influence the economy. Governments tend to use fiscal policy to control aggregate demand, price stability, economic growth and employment. Fiscal ...
*May 7, 2010*

**1st grade math**

4x5 5x4 10x2t5 5t10x2
*April 8, 2010*

**corporate finance**

Another option discussed by Tom, Jessica and Nolan would be to begin a regular dividend payment to shareholders. how would you evaluate this proposal?
*April 5, 2010*

**Physics**

Explain how the following changes in a reaction conditions will affect the position of the equilibrium below. A (g) + B (aq) C (s) + heat 1. The temperature of reaction is raised by 20 degrees C 2. As the reacton progresses, more of the compound B is added to the reaction ...
*March 31, 2010*

**physics**

A proton resistor spring system in a magnetic field going out of the page has a mass of proton 1.67*10^-27 kg, a spring constant k=500 N/m and the resistor has r=5Ω. The magnetic field strength is 0.8T. a) When released from rest, calculate the maximum displacement. b) ...
*March 30, 2010*

**physical**

A proton resistor spring system in a magnetic field going out of the page has a mass of proton 1.67*10^-27 kg, a spring constant k=500 N/m and the resistor has r=5Ω. The magnetic field strength is 0.8T. a) When released from rest, calculate the maximum displacement. b) ...
*March 30, 2010*

**Chemistry**

A mixture of .10 mol of NO, .050 mol of H2 and .10 mol of H20 is placed in a 1 liter vessel at 300 K. The following equilibrium is established. 2 NO + 2 H2 <----> N2 + 2 H20 At equilibrium (N0) = .062 M. What are the equilibrium concentrations of H2 N2 and H20
*March 29, 2010*

**Chemistry**

A mixture of .10 mol of NO, .050 mol of H2 and .10 mol of H20 is placed in a 1 liter vessel at 300 K. The following equilibrium is established. 2 NO + 2 H2 <----> N2 + 2 H20 At equilibrium (N0) = .062 M. What are the equilibrium concentrations of H2 N2 and H20
*March 29, 2010*

**8th grade litrature**

literary terms in wreck of the hesperus
*March 11, 2010*

**math**

Mudder nature
*March 9, 2010*

**MATH214**

.022508352%
*March 3, 2010*

**MATH214**

2.3cm^3
*March 3, 2010*

**Calculus**

A large tank is filled with 200 gallons of pure water. Brine containing 1 pound of salt per gallon is pumped into the tank at the rate of 5 gallon per minute. The well-mixed solution is pumped out at the same rate. (a) Find the number A(t) of pounds of salt in the tank at any ...
*November 23, 2009*

**8th grade**

how do I balance equasions in science?
*November 22, 2009*

**Math**

How do you do arrays and an expanded algorithm. 23 X 17?
*November 16, 2009*

**calculus**

The critical numbers are the values for x in which the function has a horizontal tangent line, so where the first derivative is zero. F1(x)=12x^2-72x+96 0=12x^2-72x+96 0= x^2-6x+8 0=(x-4)(x-2) The critical numbers are x=4 and x=2
*November 9, 2009*

**math**

the total cost of hiring a certain plumber is a flat rate of $35 plus $9.50/hr.Write an equation that shows the relationship between the quantities.
*November 3, 2009*

**calculus - antiderivative**

can someone help me find the antiderivative of: f'(x) = (x^2-1)/x where f(1)=1/2, and f(-1) = 0 Thanks!
*November 3, 2009*

**math**

identify the slope and the y-intercept for 5x + 20y = 60
*November 2, 2009*

**Geography**

I Believe U Should get a fairly decent grade
*October 24, 2009*

**spanish**

What Does This MEan?? te llams me gusta comer es coreer
*October 24, 2009*

**pre calc**

your answer is wrong.... redo the problem and move 1.5 and make it 5.125
*October 24, 2009*

**math**

no i knew that part its the rest
*October 22, 2009*

**math**

Two corresponding sides of similar polygons are in the ratio of 8:7. If the area of the smaller figure is 512 square meters, what is the area of the larger figure?
*October 22, 2009*

**calculus**

thanks for the reply... the question asks me to evaluate the limit using continuity, how do i justify my answer with continuity?
*October 13, 2009*

**calculus**

just wondering if someoen could help me with this limit..: lim arctan[(x^2 - 4)/(3x^2-6x)] x->2
*October 13, 2009*

**math**

It is a square. B) Its angles are not all congruent. C) Its diagonals are perpendicular bisectors of each other. D) None of the above
*October 8, 2009*

**math**

Suppose that a given parallelogram is not a rhombus or a rectangle. Which of the following can you conclude about this parallelogram?
*October 8, 2009*

**math**

True or false? In every triangle, the centroid, incenter, and circumcenter are collinear.
*October 8, 2009*

**math**

What is the difference between convex polygon and non convex polygon
*October 7, 2009*

**math**

Explain the difference between the following pairs of geometric figures: a simple closed curve and a nonsimple closed curve a convex polygon and a nonconvex polygon
*October 7, 2009*

**calculus - limits**

can someone help me determine that limit for the following function, as x --> -2? 2 - abs(x) / 2 + x
*October 4, 2009*

**Chem Please HELP!!!!!!!!!!!!!!!**

Which of the following bonding patterns DOES NOT happen? C-H-C =C= H-H All of these bonding patterns can happen.
*September 30, 2009*

**math**

A class elects two officers, a president and a secretary/ treasurer, from its 12 members. How many different ways can these two offices be filled from the members of the class?
*September 28, 2009*

**math**

Suppose that an experiment has four possible outcomes: A, B, C, and D. If P(A) = P(B) = P(C) and P(D) = 2P(A), what is the probability of each event?
*September 26, 2009*

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