Friday

April 18, 2014

April 18, 2014

Total # Posts: 406

**MATH**

you have a pair of newborn hamsters. each pair that is at least one month old produces a new pair every month. at this rate, you will have 178 hamsters at the end of what month? (The math relay officials said the 10th month but I think that it should be the 8th)

**Health (STD's)**

I need a few words that I can put in my crossword puzzle that go along with Chlamydia... Can anyone help?

**physic**

3

**science(check answers)**

B and D

**Geometry**

The sides of a quadrilateral are 3, 4, 5, and 6. Find the length of the shortest side of a similar quadrilateral whose area is 9 times as great. A. 9 B. 13.5 C. 27

**chemistry**

A reaction with an equilibrium constant Kc = 1.5 x 1021 would consist of which of the following at equilibrium: A) approximately equal reactants and products B) some reactants and products with reactants slightly favored C) some reactants and products with products slightly fa...

**chemistry**

A reaction with an equilibrium constant Kc = 1.5 x 1021 would consist of which of the following at equilibrium:

**chemistry**

A reaction with an equilibrium constant Kc = 1.5 x 1021 would consist of which of the following at equilibrium:

**english**

can somebody give me ten facts about Hades, keeper of the underworld?

**disease**

can somebody describe coronary heart disease?

**History**

How wide was the secret hallway behind the bookcase in Anne Franks House?

**Calculus**

I feel really stupid, because I think the answer may just be the sqrt(g/k).

**Calculus**

I am stuck, too. We are trying to find an expression for terminal velocity, or where (d^2h/dt^2) = 0, in terms of g and h. I do not think we are allowed to integrate just yet, so how would we do this?

**Math**

Find k such that the line [y=5x-4] is tangent to the function : x^2-kx

**ALGEBRA**

5x-3y=2x-xy -3y=2x-5x-xy (subtract 5x) -3y=-3x-xy (combine like terms) -3y=x(-3-y) (pull an X out.) (-3y)/(-3-y)=x. (Divide to get x alone.)

**Calculus**

Find k such that the line [y=5x-4] is tangent to the function : x^2-kx

**physics**

A ball is thrown upward with an initial velocity of 14 m/s. At what time does the ball reach the high point in its flight? (Use the approximate value of g = 10 m/s2 and remember that the velocity is equal to zero at the high point.)

**reading**

All of the following are goals of study reading EXCEPT: A. greater speed. B. retain information in your long-term memory. C. be an active reader. D. active reading

**Chemistry**

How many kilojoules of energy are needed to convert 104 g of ice at -14.6 to water at 25.8°C? (The specific heat of ice at -14.6 is 2.01 J/g°C.)

**math**

different was to make this equation true. 24 x 18=

**physics**

A small 0.533-kg object moves on a frictionless horizontal table in a circular path of radius 1.10 m. The angular speed is 6.41 rad/s. The object is attached to a string of negligible mass that passes through a small hole in the table at the center of the circle. Someone under...

**Chemistry**

How many drops (1 drop=0.05mL) of 0.20M KI must we add to 100.0 mL of 0.010M Pb(NO3)2 to get a precipitate of lead iodide to start. Ksp of PbI2=7.1e-9. Answer=9 drops. Please show steps.

**Chemistry**

How many drops (1 drop=0.05mL) of 0.20M KI must we add to 100.0 mL of 0.010M Pb(NO3)2 to get a precipitate of lead iodide to start. Ksp of PbI2=7.1e-9. Answer=9 drops. Please show steps.

**Math**

A 6 ft person has a shadow 5ft long. A nearby tree has a shadow 30ft long. How tall is the tree?

**Calculus**

Yes between the interval x=1 and x=3 and in the second term it is 1/(4x^2)

**Calculus**

Find the arc length given the equation y=(x^4/8)+(1/4x^2) [1,3]

**Calculus**

Find the arc length given the equation y=(x^4/8)+(1/4x^2) [1,3]

**physics**

Can you find the pressure exerted on the floor by the heel if it has an are of 1.50 cm^2 and the woman's mass is 55kg?

**chemistry**

At a certain temperature, the Equilibrium constant, Kc, for this reaction is 53.3. At this temperature, 0.500 mol of H2 and 0.500 mol of I2 were placed in a 1.00-L container to react. What concentration of HI is present at Equilibrium? equation: H2 + I2 = 2HI

**Math**

Two numbers total 43 and have a difference of 21. Find the two numbers

**Physics**

In 0.369 s, a 14.2-kg block is pulled through a distance of 3.60 m on a frictionless horizontal surface, starting from rest. The block has a constant acceleration and is pulled by means of a horizontal spring that is attached to the block. The spring constant of the spring is ...

**social studies**

need help in filling in a diagram sea of air layers of atmospher

**Physics**

A pendulum consists of a 2.6 kg stone swinging on a 4.5 m string of negligible mass. The stone has a speed of 7.9 m/s when it passes its lowest point. (a) What is the speed when the string is at 53 ¢ª to the vertical? (b) What is the greatest angle with the vertical ...

**science DUE FIRST THING IN THE MORNING PLEASE HELP**

where did the water on the outside of a glass come from

**science**

where does the water on the outside of a glass cup come from

**science **

What property of gases allow them to completely fill whatever space they are in?

**us history**

what is the worlds greatest invention???

**Physics relationship**

Let W1 represent the work required to accelerate an object on a frictionless horizontal surface from rest to a speed of v. if W2 represents the work required to accelerate the same object on the same surface from a speed of v to 2v, then which one of the following is the corre...

**Math. easy?**

On his 13th birthday he was 112cm tall and on his 14th birthday he was 121cm tall. Assume a geometric monthly growth rate. What is this rate? I just need to know how to set it up. Please and thanks

**Physics**

A cow pat was thrown 81.1m. Assuming the initial launch angle was 45 degrees, and neglecting air resistance, determine the total time the projectile was in flight. a) 4.83s b) 5.28s c) 4.07s d) 5.87s e) 4.35s

**Math, due tonight!**

Assume that all linear dimensions of an animal increase by 12%. Then the animal will have the same shape. How do the surface area, the volume and the weight (under assumption of constant specific gravity) increase? Give the percentage of the increase.

**MATH**

Assume that all linear dimensions of an animal increase by 12%. Then the animal will have the same shape. How do the surface area, the volume and the weight (under assumption of constant specific gravity) increase? Give the percentage of the increase.

**Physics**

A 1500 kg car moves along a horizontal road at speed v0 = 21.9 m/s. The road is wet, so the static friction coeﬃcient between the tires and the road is only µs = 0.302 and the kinetic friction coeﬃcient is even lower, µk = 0.2114. The acceleration of ...

**Physics Vectors**

two vectors A and B have magnitude such that A>B. We do not know the directions of the vectors. however we can say that the magnitude of the sum A+B must be between? a) B and 2A b)A and A+B c) A-B and A+B d) A-B and A e) B and A+B

**History**

My teacher was not very clear in explaining this topic, I need a refresher I guess.

**History**

Comparing French, Dutch, and English colonies, which ones attracted the most settlers, and which the fewest? In what colonies were women scarce? What impact did these differences in emigration have on the various colonies development?

**science**

what are controls and variables?????????

**algebra**

thank you very much this really helped a lot!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

**algebra**

i need some examples of addition problems with negative answers can anybody help me ??????????????????

**chemistry**

I see your error. You used the incorrect freezing point depression constant: .52 instead of 1.86.

**chemistry**

This sounds like solid reasoning, but I apologize, because the answer in the back of my textbook says 0.56 mL of 12.0 M HCl.

**chemistry**

PLEASE SHOW PROCEDURE! You wish to prepare an aqueous solution that has a freezing point of -0.100 degrees Celsius. How many milliliters of 12.0 M HCl would you use to prepare 250.0 mL of such a solution? [Hint: Note that in a dilute aqueous solution, molality and molarity are...

**Macroeconomics**

Describe how each of the following will affect the equilibrium price level(P) and real output(Y) in the short run(Assume the economy is initially in the long-run equilibrium.) (a) A reduction in the real interest rate (b) A widespread fear of deep recession on the part of cons...

**physics**

A subway train starts from rest at a station and accelerates at a rate of 1.60 m/s2 for 14.0s. It runs at a constant speed for 70.0 s and then slows down at a rate of -3.50 m/s2 until it stops at the next station. a) Sketch a position vs. time graph for this problem. b) Sketch...

**physics**

A runner covers one lap of a circular track 40.0 m in diameter in 62.5 s. Suppose initially the runner starts by going in the north direction. Assume the speed is constant for the first half-lap and then constant for the 2nd half-lap. Suppose instead the runner ran these same ...

**geometry**

The 1700 matches my answer so is that the one I use

**geometry**

The volume of a sphere is 2,098pim^3 what is the surface area to the nearest tenth

**geometry**

abcd is a parallelogram. if ab is equal to 2x+1 and cd is equal to x +13,findx

**geometry**

Use formulas to find the lateral area and surface area of the given prism round to nearest whole number Believe height 4m and base on side 7m, front 29m, other end 7.28m possible answers; 472m^2;486m^2 443m62;486m^2 472m62;479m^2 443m62;500m^2 Can someone possibly help me

**geometry**

I guess I'm lost my answer choices are; 7/2+21/2sqrt3 21+7sqrt3 7+21sqrt3 21/2+7/2sqrt3 So I don't understand

**geometry**

Sorry, but I still don't get it

**geometry**

The length of the hypotenuse of a 30, 60, 90 triangle is 7 how do you find perimeter?

**geometry**

i figured out the mean sqrt of 1089=33

**geometry**

find the geometric mean of the pair of numbers 99 and 11 kristen lives directly east of the park the football field is directly south of the park the library sits on the line between kristens home and the football field at the exact point where an altitude to the right formed ...

**Chemistry**

The pH of a solution is 1. Which of the following statements are also true for the solution? (Select all that apply.) It will change the color of red litmus to blue. The concentration of hydronium ion is equal to the concentration of hydroxide ion. The solution is acidic. It w...

**math**

nvm i just did b*(-1x^2+122x)=61

**math**

i am trying to write a script for an animation so that it follows a specific path. the animation begins at the origin, goes upwards to the point (61,61) then falls to (122,0) in a parabola. i am trying to figure out the equation for this line. x-intercepts: 0 & 122 vertex: (61...

**chemistry**

If 90 mL of laundry bleach containing a 5.0% w/v concentration of sodium hypochlorite is recommended per load of laundry, what mass of sodium hypochlorite is being used per load?

**phys**

327

**english**

what is the Gerund phrase and Noun function in these sentences? 1)Writing a research paper sounds difficult. 2)He must like studying calculus. 3)Her favorite pastime is entertaining friends. 4)Water skiing, sailing, and swimming are my favorite summer sports. 5)I enjoy playing...

**english**

i am new to this

**english**

what is the function of the italicized infinitive phrase in these sentences? 1)May I have permission to use the car tonight? 2)He went to Europe to study architecture. 3)Can you give me a place to put my things? 4)I want to go with you to the store. 5)To help you is my greates...

**Physics**

A cannon tilted up at a 34.0^\circ angle fires a cannon ball at 69.0 m/s from atop a 23.0 m-high fortress wall. What is the ball's impact speed on the ground below?

**College physics**

Consider the two situations. In the first a machine must pull a box up a rough slope at constant speed. The mass of the box is 800 kg, the coefficient of kinetic friction is 0.2, and the slope is inclined at 15 degrees to the horizontal. In the second situation the machine mus...

**ap world history**

what was the world bank? why was it created?

**Geometry**

How do I find the area of a right triangle with a hypotenuse that measures 39 cm anad a leg that measures 15 cm?

**Poetry, plz comment**

this was beautiful.

**physics**

What is k?

**physics**

Starting from rest at the top, a child slides down the water slide at a swimming pool and enters the water at a final speed of 4.00 m/s. At what final speed would the child enter the water if the water slide were twice as high? Ignore friction and resistance from the air and t...

**algebra**

composite function Find ( f o g) (-5) if f(x)= -2x-7 g(x) = -4x + 3

**physics**

A 68.0 kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.770 and 0.470, respectively.

**math**

>.> and the question is...?

**Math [Trig]**

how do you find a full cycle of a trigonemtric function?

**math**

what items?

**Calculus**

The answer to your question is 3

**physics**

Two boxes (b1 = 23 kg and b2 = 57 kg) are being pushed across a horizontal frictionless surface, as the drawing shows. The 48-N pushing force is horizontal and is applied to the 23-kg box, which in turn pushes against the 57-kg box. Find the magnitude of the force that the 23-...

**physics**

A bowling ball (mass = 7.2 kg, radius = 0.12 m) and a billiard ball (mass = 0.31 kg, radius = 0.028 m) may each be treated as uniform spheres. What is the magnitude of the maximum gravitational force that each can exert on the other?

**physics**

A rock of mass 32 kg accidentally breaks loose from the edge of a cliff and falls straight down. The magnitude of the air resistance that opposes its downward motion is 275 N. What is the magnitude of the acceleration of the rock?

**college mathematics**

9. Create a Euler diagram to determine whether the syllogism is valid or invalid. All children like games. John likes games. John is a child., <--At the beginning of this sentence which is the last sentence is suppose to have three dots shaped like a triangle. (I am having ...

**college mathematics**

2.) Construct a truth table for (p^~q)-->q.

**college mathematics**

10. If the argument below is valid, name which of the four valid forms of argument is represented. If it is not valid, name the fallacy that is represented. If I sing in the shower, then I will not be overheard while singing. I was not overheard while singing. Therefore, I san...

**college mathematics**

9. Create a Euler diagram to determine whether the syllogism is valid or invalid. All children like games. John likes games. John is a child., <--At the beginning of this sentence which is the last sentence is suppose to have three dots shaped like a triangle.

**college mathematics**

8. Determine which, if any, of the three statements are equivalent. Give a reason for your conclusion. Show complete work. I.) If the dog wags its tail, then the dog is not calm. II.) Either the dog does not wag its tail or the dog is not calm. III.) If the dog is not calm, th...

**college mathematics**

5. Given p is false, q is true, and r is false, find the truth value of the statement (~p<-->~q)-->~r. Show step by step work.

**college mathematics**

4. Construct a truth table for q <-->(p^ ~q). Be sure to include all intermediate steps in your table.

**college mathematics**

3. Fill in the heading of the following truth table using any of p, q, ~, -->, <-->, V, and ^. p q T T T T F F F T F F F T

**kinematics**

A projectile is launched with an initial velocity of 25 m/s at a launch angle of 36 degrees. What is the magnitude of the projectile’s velocity when it is 7.5 m above the ground?

**college mathematics**

Given the argument and its Euler diagram below, determine whether the syllogism is valid or in valid. All painters use brushes. Some people who use brushes are teachers. Some painters are teachers. (The second sentence is suppose to have a line underneath it, and also the prob...

**college mathematics**

Construct a truth table for ~q v ~p.

**physics**

A person looking out the window of a stationary train notices that raindrops are falling vertically down at a speed of 8.1 m/s relative to the ground. When the train moves at a constant velocity, the raindrops make an angle of θ = 25° when they move past the window as...

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