# Posts by jason

Total # Posts: 1,352

**Math**

Find the points of intersection of the parabolas y=1/2x^2 and y=1-1/2x^2. Show that at each of these points the tangent lines to the two parabolas are similar Answer (+-1,1/2) Please show and explain all steps thank yo

**literature**

In "How the World Began" what we now consider the North American continent, Native Americans saw as Answer a-turtle's back b-a pancake c-a great American desert d-the Land of Oz In "How the World Began," Iagetci's fall from the upper world is ...

**Chem**

I have done this so many way and can't seen to get the right answer please help! I'm looking for the Concentration of NiCl2, M from the following Volume of 0.390 M NiCl2, mL 4.0 3.0 2.0 1.0 Volume of water, mL, 0 1.0 2.0 3.0 Absorbance 0.858 0.644 0.429 0.215 I keep ...

**Science - Physics, I need help with both please.**

A 57.0 kg diver dives from a height of 15.0 m. She reaches a speed of 14.0 m/s just before entering the water. What was the average force of air resistance (e.g., friction) acting on the diver? Bonus: What is the force of friction underwater if she reaches a depth of 2.5 m ...

**Math**

the average american drinks 29 more cokes per year than the average mexican. if together they consume 555 cokes per year how many cokes are consumed each year by the average american and how many by the average mexican? i also have to identify the constraints.

**biology**

what is one example of a specific case used by scientists for organ cloning?? (therapeutic cloning)

**help...**

Identify the facilities and amenities of disney cruise lines.

**science help plzzz**

Josslyn and Klynn are right i thought they were wrong but they are right

**physics**

A 2.0 micro Farad capacitor in a circuit in series with a resistance of 1.0 mega ohms is charged with a 6.0v battery. How long would it take to chage the capacitor to three fourths of its maximum voltage.

**physics**

Show that the time for the voltage in the RC circuit to rise to (Vo/2) "half-max" is t1/2 = T ln 2

**physics**

With V = Voe^-(t/T), how many time constants does it take for a capacitor to discharge less than 1% of its initial voltage?

**physics**

What is the voltage across a capacitor after a time of two constants when a. charging from zero voltage and b. discharging from a fully charged condition?

**physics**

Show that the magnitude of the charge on a capacitor is given by Q = (Qo(1-e^-(t/T))) and Q = Qoe^-(t/T) for charging and discharging, respectively.

**math**

Find the inverse of each of these functions a)f(x)=x/x+2 b)f(x)=2x/5-x c)f(x)=3x/2x+1

**quantum physics**

Help please!!!

**Marine Pollution**

Why there is a need for reception facities for ship operation inside the 50 called special areas?

**algebra 2**

find the value or expression f(x)= x^2, g(x)=x-3 if (f*g)(c)

**Quantum Physics**

Time is running out for you. No money means no score sufficient to get the certificate.

**Quantum Physics**

So, are you ready to transfer them to my personal account at the Bank of Nigeria ?

**Quantum Physics**

For $1000, I'd give you the right answer.

**Quantum Physics**

OK, here is the real answer: theta = e*a*t phi = s*H*i*t Job done!

**Quantum Physics**

For 8d. Theta = pi Phi = 0

**Chemistry**

If 5.300 g of C6H6 is burned and the heat produced from the burning is added to 5691 g of water at 21 °C, what is the final temperature of the water? 2C6H6(l) +15O2 (g)----> 12CO2(g)+6H2O(l) +6542

**American History**

informal changes to the constitution include. A.Treaties B.Laws passed in congress C. Supreme court decisions D. All of the above

**Physics**

A car accelerates uniformly from rest to a speed of 23.9 km/h in 8.2 s. Find the distance it travels during this time. Answer in units of m

**Algebra 1**

A rectangle has a length of 4x and a width of 4x-2. its perimeter is 12 inches find the length and width

**Math**

yes

**Physics**

A plane is flying horizontally at a speed of 290m/s. He drops a package (ignoring air resistance). A)If it take 15s for the package to hit the ground, how high above is the plane? B) How far (horizontally) before the island should Steven drop the package? C) Assuming the ...

**Mechanics**

Typically, a tennis ball hit during a serve travels away at about 51 m/s. If the ball is at rest mid-air when struck, and it has a mass of 0.058 kg, what is the change in its momentum on leaving the racket? Show the solution and answer.

**Mechanics**

A 1000-kg car whose motor delivers a maximum power of 40.0 hp to its wheel can maintain a steady speed of 130 km/h on a horizontal roadway. How large is the friction force that impedes its motion at this speed? Show the solution and answer

**algebra b**

the cumulative number of car accidents from 2000-2010 can be modeled by the quadratic expression, C=-33x^2+792x+8,877, where x=1corresponds to 2000, x=2 corresponds to 2001, and so on untill x=11 corresponds to 2010 a)find the number of cumulative car accidents in 2005? b)use ...

**algebra b**

the height h in feet of a ball after t seconds is given by h=176t-16t^2. how long did it take to hit the ground

**algebra b**

I'm sorry sue the area is 84 square feet

**algebra b**

the length of a rectangular banner is 5 feet longer than the width. If the width is 84 square feet, find the dimensions

**Mechanics**

a driver of a 1200-kg car notices that the car slows from 20 m/s to 15 m/s as it coasts a distance of 130 m along level ground. How large a force opposes the motion? Show the solution

**Physics**

An AC voltage with 169 peak volts is applied across a 506 ohm resistor. To the nearest tenth of a watt, what is the average power?

**physics**

You are on an archaeological dig and discover a strange artifact. It is a utensil that appears to be carved out of an elephant's tusk You analyze it and discover that it has 0.625 the amount of carbon-14 you would find in a living specimen. 1.How many half-lives has the ...

**math**

13/28 x 100% =46.4%(corr. to 3 sig. fig.) (we usually correct to 3 significant figure if we see long decimals)

**Math**

I assume you and your friends share the pizza equally and no other people are going to share the pizza. Each one will get = 3 1/8 divided by 5 = 5/8

**physics**

Charge A has a charge of +2C. Charge B has a charge of -3C and is located 1 meter to the right of A. Charge C is located 1 meter to the right of Charge B and has a charge of -1C. If a fourth charge (Charge D) is placed 4 meters to the right of Charge B, how much charge must it...

**Introduction to Physical Science**

When a cannon with a longer barrel is fired, the force of expanding gases acts on the cannonball for a longer distance. What effect does this have on the velocity of the emerging cannonball? (Do you see why long-range cannons have such long barrels?)

**physics**

An iorn rod (a=11.8 x 10^-6 C^-1) has a length of 1000 meters(or 1 km) at 0 degrees Celsius. If the rod must expand 10 cm to bridge a gap, to what temperature must the rod be heated?

**Physics**

An iorn rod (a=11.8 x 10^-6C^-1) has a length of 1000 meters(or 1 km) at 0 degrees Celsius. If the rod must expand 10 cm to bridge a gap, to what temperature must the rod be heated?

**medical billing and coding**

I would add ICD-9 Procedure code 40.11 for the biopsy of the lymph node. 85.21 is only the procedure for the lumpectomy. Right?

**Physics**

thanks simon76 :)

**Physics**

Anyone have any idea for q2_2_1 Q2_2_3 Q2_2_5 Appreciate your help. Thanks :)

**Physics**

2_1_3 is wrong

**Physics**

Q2_2_5 is incorrect

**Physics**

A boat is constructed in the shape of a rectangular cube. The base of the boat is 2m by 3m and the side of the boat is 2m high. The boat has a total mass of 4500kg. Hint-The density of the water is 1000kg/m^3. a. What is the buoyant force on the boat? Explain answer. b. ...

**Physics**

A ball is rolled off a table that is 0.481 m above the floor. The ball is rolling with a velocity if 1.8 m/s as it goes off the edge of the table. At the exact instant the first ball rolls off the table a second ball is dropped from the same height. A.) How long does it take ...

**physics**

an automobile is travelling towards you at a speed 25.0m/s. When you measure the frequency of its horn, you obtain a value of 26Hz. If the actual frequency of the horn is known to be 240Hz, calculate speed of sound in air? answer is 325m/s

**Physics**

￼

**Physics**

The femur of a human leg (mass 10 kg, length 0.9 m) is in traction, as shown in the figure below. The center of gravity of the leg is one-third of the distance from the pelvis to the bottom of the foot. Two objects, with masses m1 and m2, are hung using pulleys to provide ...

**Physics**

49, 24

**physics**

If a cyclist traveling at 14.0m/s skids to a stop in 5.60 s, determine the skidding distance assume uniform acceleration? Answer is 39.2m

**physics**

Approaching a flashing pedestrian activated traffic light, a driver must slow down to a speed of 30km/h. If the cross walk is 150m away and the vehicle's initial speed us 59km/h, what must be the magnitude of the car's acceleration to reach the speed limit? Answer is 0...

**chemistry**

the heat of vaporization for water is 540 cal/g. how many kilocalories are needed to change 22g of liquid water to steam at 100*c?

**Chemistry**

Nope that's how they are given. That's why I was having trouble with them.

**Chemistry**

calculate the rate constant at 225C for a reaction that has a rate constant of 8.1X10^-4 at 95c and an activation enegry of 93.0 kj/mol

**Chemistry**

1. The following data was collected for the reaction between hydrogen and nitrogen monoxide. The time recorded corresponds to a N2 concentration change of 5.3 x 10-4 M. 2H2(g) + 2NO(g) 2H2O(g) + N2(g) Trial [H2], M [NO], M Time, s 1 0.01 0.02 74 2 0.02 0.02 37 3 0.01 ...

**Chemistry**

I just wanted to see if my answers made sense. 1. What effect would each of the following have on your calculated value of Kf (too high, too low, or no effect)? In each case explain your answer. a) There was a small bubble in the thermometer, causing all the temperature ...

**Engineering**

Q1_1_2. My answer is -4*rho*A*g*L

**statistics**

well i guess you cannot stop cheating only but one should not ignore those who are studying hard with just one aim to learn so its ok this world is full of cheaters or copycats no originality no creativity but you should also keep in mind that still there are some good ...

**Financial Literacy**

1000

**math**

$903.59

**Calculus**

if the surface area of a sphere is given by the formula SA=4pir^2, find the rate of increase of the surface area if the radius is 4 cm and is increasing at the rate of 0.5 cm/min.

**Calculus I**

find the antiderivative of f(x)=(x^2)/(x^3+5) with explanation

**Math**

Reiny was close, I would adjust the possible combination to 10^4 = 10,000 So 36/10,000 = 9/2,500

**math**

Jim draws a sketch of his bedroom wall to scale. The actual wall is 10 feet long and 8 feet high. The drawing is one- sixth the length and width of the actual wall. What are the dimensions of the drawing in inches?

**Literature ?! Check my answers?**

Yep you are right Alyssa! CCB! THANKS

**math**

l&k are two lines given by the following equations l: 3x-5y+4=0 k:5x+3y+2=0 could anyone please help

**Business Statistics**

That does not help at all.

**Business Statistics**

Suppose that in the past, 94% of all Hispanic grocery shoppers were women. Perhaps due to changing cultural values, we believe that more Hispanic men are now grocery shopping. We randomly sample 689 Hispanic grocery shoppers from around the United States and 606 are women. ...

**Trigonometry**

Every point (x,y) on the curve y = \log_{2}{3x} is transferred to a new point by the following translation (x',y') =(x+m,y+n), where m and n are integers. The set of (x',y') form the curve y = \log_{2}{(12x-96)} . What is the value of m + n ?

**Trigonometry**

Given \tan \theta = -\frac{4}{3}, where \frac{\pi}{2} < \theta < \pi, what is the value of \frac{1}{\sin \theta + \cos \theta}?

**Geometry**

The vertices of a regular 10-gon are labeled V_1, V_2, \ldots V_n, which is a permutation of \{ 1, 2, \ldots, 10\}. Define a neighboring sum to be the sum of 3 consecutive vertices V_i, V_{i+1} and V_{i+2} [where V_{11}=V_1, V_{12}=V_2]. For each permutation \sigma, let N_\...

**Geometry**

ABCD is a trapezoid with AB < CD and AB parallel to CD. \Gamma is a circle inscribed in ABCD, such that \Gamma is tangent to all four sides. If AD = BC = 25 and the area of ABCD is 600, what is the radius of \Gamma?

**Geometry**

Two points are chosen uniformly at random on the unit circle and joined to make a chord C_1. This process is repeated 3 more times to get chords C_2, C_3, C_4. The probability that no pair of chords intersect can be expressed as \frac{a}{b} where a and b are coprime positive ...

**Geometry**

Two points are chosen uniformly at random on the unit circle and joined to make a chord C_1. This process is repeated 3 more times to get chords C_2, C_3, C_4. The probability that no pair of chords intersect can be expressed as \frac{a}{b} where a and b are coprime positive ...

**Geometry**

When writing a math expression, any time there is an open bracket "(", it is eventually followed by a closed bracket ")". When we have a complicated expression, there may be several brackets nested amongst each other, such as in the expression (x+1)*((x-2...

**Science**

Please help me with matching the stages of the meiosis to its proper description. Sentences: 1. Members of each homologous pair separate from each other (chromatids) still remain together). 2. Homologous chromosomes pair up with each other and chromosomes 'cross over' ...

**Algebra**

i love you connection answers...

**geochemistry**

@DrBob222: I know how to do redox problems. It's just that this problem has a specific answer with the coefficients being 5,4=>2,4,1,3. Where no protons remain in the final answer

**geochemistry**

Been trying to balance this equation for a while, but can't get the right answer. any help would be apperciated! CH2O (aq) + NO3 - ---> N2 + HCO3 - + CO2(g)

**lang arts**

help this is the question in ---------------------------------------------------------------------------------------------------a multi step draft reading problem what does a reader look for in the second reading of drama help

**Math problem solving**

in 5 years time i will be 3 times as old as my son. in 14 years time, the sum of our ages will be 62. find the sum of our ages today

**compound interest**

1. If you were to place $15,000 in the bank at 3% interest, how much would you have in the bank after one year if the interest were compounded quarterly?

**Fiance**

Use your knowledge of income statements to fill in the missing items: Sales Cost of goods sold $575,000 Gross profit $1,600,000 General and administrative expense $200,000 Selling and marketing expense $ Depreciation $50,000 Operating income $ Interest $100,000 Income before ...

**Finance**

Use the “balance sheet equation” to determine owners’ equity if liabilities are $5 million and assets are $10 million. Assets = Liabilities + Owners’ equity

**math**

the factor of part b. would end up being 3x^2(23-3pi). because you would have to bring down the area of part a. which would be 69x^2 with the 9pix^2 not 84, therefore, giving the factored solution of 3x^2(23-3pi). 3 is the gcf because 69 cannot and 9 cannot be multiplyed to ...

**Statistics**

Really, you will go to this length to cheat? This is a part of an online exam, please do not answer

**StatIstics**

The answer is....Do your homework and stop cheating, this is a part of an online exam, please do not answer

**Physics**

A block weighing 5.7 N requires a force of 2 N to push it along at constant velocity. What is the coefficient of friction for the surface?

**Entropy question**

What is the absolute entropy of 2.5 mol of gaseous methane at 1.3 bar and 298 K?

**Science**

If the adverage weight of a human body is 75kg and given the mass of the earth is 5976 x 10^21kg, how many people will it take to exceed the weight of the earth? At the present growth of 1.14%, when will the present population of 6.8 x 10^9 grow to that number?

**physical science**

In terms of energy, the general chemical equation AB+CD+energy = AD+CB represents a (an)_________ reaction.

**English**

What elements of the Restoration comedy are seen in The Importance of Being Earnest?

**Penn Foster**

im sorry ive been trying to find the answer for this but its deff. not A i just got it wrong.

**U Hart**

The 50 kg cylinder shown, which was initially at rest, rolls without slipping. when the speed of A is 20 cm\s, the speed of point B is most nearly

**chemistry**

Use the reaction shown to calculate the mass of iron that must be used to obtain 0.500 L of hydrogen at STP: 3Fe(s) + 4H2O(l) pr029-1.jpg Fe3O4(s) + 4H2(g