Friday

March 6, 2015

March 6, 2015

Total # Posts: 6,517

**physics**

A stunt woman sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. The speed of the horse is 13.5 m/s, and the woman is initially 2.60 m above the level of the saddle. (a) What must be the horizontal distance between the saddle and limb when ...
*January 22, 2012*

**calculus**

Find the limits Lim(sin kt/t) t approaches 0 and (K is constant) How do you start this and go about it stepwise? Does knowing (K constant) help me to solve this?
*January 20, 2012*

**chemistry**

If 22.40g of potassium react with silver sulfide what mass of each product will form?
*January 19, 2012*

**chemistry**

What mass of aluminum hydroxide will be produced when 0.460 grams of aluminum sulfide react with water? How many grams of hydrogen sulfide are produced, according to the following equaton? Al2S3 + H20 -------> Al(OH)3 + H2S
*January 19, 2012*

**math**

An electron moving along the x axis has a position given by x = 14te^-5t m, where t is in seconds. How far is the electron from the origin when it momentarily stops?
*January 19, 2012*

**chem**

thank you
*January 18, 2012*

**chem**

calculate the PH of [OH-] = 4.5×10−3 M Please show how you work this problem.
*January 18, 2012*

**CHEM**

Write an equation for the acid–base reaction between ammonium ion and sulfate ion. a. why does the equillibrium favor the reactants? This was my answer NH3+H2O--><--(NH4)2SO4
*January 18, 2012*

**CHEM**

thank you
*January 18, 2012*

**CHEM**

so the temperature doesnt have a whole lot to do with this reaction?
*January 18, 2012*

**CHEM**

Which of the following reactions should be fast at room temperature? Which would be slow? Explain A. KCl+AgNO3->KNO3+AgCl B. H2(g)+Cl2(g)->2 HCL(g) I would assume that B would react faster because it has all gases.??
*January 18, 2012*

**chem**

Thank You
*January 18, 2012*

**chem**

ok so A.20 seconds B. 80 seconds C. 120 seconds
*January 18, 2012*

**chem**

the lower the temperture the longer it should take correct?
*January 18, 2012*

**chem**

IF a reation generally takes 40 seconds to occur at 45 degrees C, how long should the reaction take a t the following temperatures? A. 35C B. 55C C. 65C
*January 18, 2012*

**maths**

what is ?
*January 18, 2012*

**Chemistry**

Is liquid-liquid extraction or solid-phase extraction a better approach to process very large amounts of water?
*January 18, 2012*

**chemistry**

40.0 x 10^3 divide by 400 x 10^-3 = 100 000 tablets
*January 18, 2012*

**science**

Messenger RNA (mRNA)
*January 18, 2012*

**physics**

distance covered in first two hours = 40 mph x 2 = 80 miles distance to be covered in the remaining three hours = 400 - 80 = 320 miles average speed for remaining three hours = 320 / 3 = 106.667 mph
*January 18, 2012*

**physics**

distance covered in first two hours = 40 mph x 2 = 80 miles distance to be covered in the remaining three hours = 400 - 80 = 320 miles average speed for remaining three hours = 320 / 3 = 106.667 mph
*January 18, 2012*

**algebra**

tow company A charges $50 + m and company C charges 80 + .1m. If both companies charged the same, how far are you from your garage? Are they asking for 2 different #? If so,I am 30 miles from A and 0 miles from C. Correct?
*January 18, 2012*

**Math**

76 degrees and 76 degrees 28 degrees and 124 degrees
*January 18, 2012*

**Math**

y = x - 1
*January 18, 2012*

**PHYSICS**

Impulse = Change in momentum = F x t = 27.3 x 0.18 = 4.9 Ns
*January 18, 2012*

**physics**

x = x(initial) + v(initial)t + 1/2 at^2 0 = 1.5 + 0 + 1/2 (-10)t^2 1.5 = 5 t^2 t = 0.55 seconds v = v(initial) + at v = 0 + (-10)(0.55) v = -5.5 m/s (i.e. it will reach the ground at 5.5 m/s)
*January 18, 2012*

**STRESS MANAGEMENT TECHNIQUES**

Which of the following physiological symptoms are signs of stress? A. Hearing and vision loss B. Arthritis and carpal tunnel syndrome C. Headaches and elevated blood pressure D. Dental cavities and bone loss
*January 18, 2012*

**Algebra I**

ARGBEBTGWEV%$WT@$WC$$$$$$EV#QT%EW UH%VHTWECX
*January 17, 2012*

**Physics**

A man can throw a ball a maximum horizontal distance of 175 m. The acceleration of gravity is 9.8 m/s^2. How far can he throw the same ball vertically upward with the same initial speed?
*January 17, 2012*

**math**

9000
*January 17, 2012*

**chemistry**

How many grams of 5.400 wt% aqueous HF are required to provide a 50% excess to react with 14.0 mL of 0.0236 M Th4+ by the following reaction? Th4+ + 4F - → ThF4 (s)
*January 15, 2012*

**math**

Brie's cabinet has 6 cans of vegetable soup,4 cans of chicken soup, and 8 cans of beef barley soup. She will pick a can of soup from the cabinet at random. 1. What is the probability brie will pick a can of vegetable soup? Write your answer in ratio from. 2. What is the ...
*January 15, 2012*

**math**

The barkleys have a set of plastic picnic cups and dishes that come in 6 different colors. Blue, Red, Green, Yellow , Orange, and Purple. 1. How many possible cup-and-dish combinations can they make with such a set? 2. peter will pick a dish and a cup without looking.What is ...
*January 15, 2012*

**5 th grade algebra**

that's 36.375
*January 14, 2012*

**Science**

How does water's oxygen content affect freezing point?
*January 14, 2012*

**scientist**

Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard learning session in ...
*January 12, 2012*

**Economics**

There are two groups of individuals of equal size, each with a utility function given by U(M) = sq. root(M), where M = 100 is the initial wealth level for every individual. Each member of group 1 faces a loss of 36 with probability 0.5. Each member of group 2 faces the same ...
*January 11, 2012*

**math**

An adult has 206 bones of those 2.9% are found in the inner ear. How many bones in the human body are found in the inner ear?
*January 10, 2012*

**law and ethics -nursing**

What ethical dilema could a wife with cancer possibly face? What ethical dilema could her husband possibly face when he has depression that he doesnt treat? There son is a 24 year old whom has down syndrom and needs his parents for care.
*January 9, 2012*

**nursing**

Two ethical dilemmas potentially faced by a family whom the wife has colon cancer and the son is a 24 year downs. The wife mainly cared for him and the husband is lost and depression and has been drinking
*January 9, 2012*

**nursing ethics and law**

List two ethical dilemmas potentially faced by the Allen family in this simulation
*January 9, 2012*

**physic**

an ideal fluid flows through a pipe hat runs up an incline and gradually rises to a height H. The cross sectional area of the pipe is uniform. compared with the flow at the bottom of the incline, the flow at the top is a) moving slower at lower pressure b) moving slower at ...
*January 8, 2012*

**math**

Pizzaz pg.103 Did you hear about...
*January 8, 2012*

**business**

You have recently learned that the company where you work is being sold for $275,000. The company’s income statement indicates current profits of $10,000 which have yet to be paid out as dividends. Assuming the company will remain a “growing concern” into the ...
*January 7, 2012*

**Calculus**

Find the particular solution that satisfies the intial condition: xdy - (2xe^(-y/x)+y)dx = 0
*January 5, 2012*

**chemistry**

I am a freshman in college, and am taking a placement test soon, but haven't seen chemistry since 10th grade. I'd appreciate any help I can get from anyone here to help me solve this problem: Hydrogen and sulfur chemically combine to form the gas hydrogen sulfide, ...
*January 5, 2012*

**Pre Calc**

evaluate the trigonometric function of the given quadrantal angle. tan 1400° cos 9π cos 13π/2 sin (-17π)
*January 4, 2012*

**nursinmg ethics and law**

Identify and explain nursing management decisions relating to standards of practice that pose legal implications.
*January 4, 2012*

**physics**

A small component of 1cm x 1 cm x 1 cm is subject to external forces coming from all directions. Design a holder for the component capable of measuring those forces through sensors that are embedded in the holder and capable of measuring forces in x, y, and z. Without loose ...
*January 4, 2012*

**physics**

A small component of 1cm x 1 cm x 1 cm is subject to external forces coming from all directions. Design a holder for the component capable of measuring those forces through sensors that are embedded in the holder and capable of measuring forces in x, y, and z. Without loose ...
*January 4, 2012*

**English**

What is the meaning of "When once you have tasted flight, you will forever walk the Earth with your eyes turned skyward, for there you have been, and there you will always long to return"?
*January 3, 2012*

**physics**

A stone is projected upward at an angle of 60degree to the horizontal from the top of a tower of height 100meter and it hits the ground at a point. If the initial velocity of projection is 100meter. Calculate the maximum height of the stone above the ground. Calculate the time...
*January 3, 2012*

**physics**

A stone is projected upward at an angle of 60degree to the horizontal from the top of a tower of height 100meter and it hits the ground at a point. If the initial velocity of projection is 100meter. Calculate the maximum height of the stone above the ground. Calculate the time...
*January 3, 2012*

**mathhh**

So its A?
*December 31, 2011*

**mathhh**

Which property is illustrated by the equation (rs)t=r(st)? A) associative B)Communtative C)Distributive D)Identity Help me please
*December 31, 2011*

**Physics**

A 60 kg ice skater holds up a large sheet of cardboard that can catch the wind and drive her (frictionlessly) across the ice. While she's moving at 0.5 m/s, a wind that is constant and horizontal for 5.0 s exerts a force on the cardboard of 1.7 N. What is the skater's ...
*December 29, 2011*

**Physics**

A 60 kg ice skater holds up a large sheet of cardboard that can catch the wind and drive her (frictionlessly) across the ice. While she's moving at 0.5 m/s, a wind that is constant and horizontal for 5.0 s exerts a force on the cardboard of 1.7 N. What is the skater's ...
*December 29, 2011*

**Physics**

A 60 kg ice skater holds up a large sheet of cardboard that can catch the wind and drive her (frictionlessly) across the ice. While she's moving at 0.5 m/s, a wind that is constant and horizontal for 5.0 s exerts a force on the cardboard of 1.7 N. What is the skater's ...
*December 29, 2011*

**grammar**

All I got were a doll, a hat, and a bat. subject-verb agreement
*December 20, 2011*

**math**

Let f(x)= 4 and g(x)= ãx-2 : X2 - 4 f o g(11)=ANSWER: Square root X-2/ 11-2 =ã9=3 4/32 -4 = 4/5 f o f(0)=ANSWER Determine the Domain of f o g=ANSWER:
*December 18, 2011*

**calc**

Let f(x)= 4 and g(x)= ãx-2 : X2 - 4 f o g(11)=ANSWER: ãX-2/ 11-2 =ã9=3 4/32 -4 = 4/5 f o f(0)=ANSWER Determine the Domain of f o g=ANSWER:
*December 18, 2011*

**cal**

1. Given the function f(x) and g(x) below determine the following: A) f o g(3) ANSWER: B) f o g(-4) ANSWER: C) g o f(0) ANSWER: D) f o f(1) ANSWER: E) g o g(-2) ANSWER:
*December 18, 2011*

**math**

Suppose that you are a CSI and you are called to a crime scene at 12:00 noon and find a dead body in a walk-in that is a constant 40¨H. The initial temperature is 85¡ã and after 20 minutes. The body¡¯s temperature is 84¡ã. Using Newton&...
*December 18, 2011*

**CHEMISTRY**

546.0 J
*December 16, 2011*

**Math (URGENT)**

solve for x, 0 ¡Ü x < 360 tan2x+1=0 My answers: 22.5, 157.5, 202.5, 337.5 Textbook: 67.5, 157.5, 247.5, 337.5 I don't understand. Am I wrong? Thanks for your help.
*December 16, 2011*

**trig**

How do you find 2.8 revolutions per second in radians? I understand that two revolutions would be equal to 4pie but how do you find the 0.8?
*December 14, 2011*

**trig**

A bolt secured to a bridge is being acted upon by forces being exerted by two cables attached to the bolt. The force vector for one of the cables is represented by F1 = <1.7,9.8>. The other force vector, F2, is known to have a magnitude 5 and a direction angle of 10 ...
*December 14, 2011*

**math**

how did you get the denominators to be the same?
*December 14, 2011*

**trig**

Find ALL solutions to the equation on the interval [0, 2pie]: 2sin(1/2X) = 1
*December 14, 2011*

**Anthro**

none of the 188,000 results are good fr information
*December 13, 2011*

**Anthro **

“How do images challenge our assumptions and understanding of society as relatively cohesive, homogenous and stable social units?” (feel free to simply summarize potential ideas)
*December 13, 2011*

**English (URGENT)**

How many paragraphs does a literary review have? This is a writing assignment for Grade 12 English. I need to write literary review on an article I find on the internet. I have an identification paragraph that talks about the author's credentials. Then I have a paragraph ...
*December 12, 2011*

**world geography**

in a traditional economic system which type of good is most often produced?
*December 12, 2011*

**calculus**

A tank with a rectangular base and rectangular sides is to be open at the top. It is to be constructed so that its width is 4 meters and its volume is 36 cubic meters. Building the tank costs $10 per square meter for the base and $5 per square meter for the sides. a) Write a ...
*December 12, 2011*

**math**

thank you soooooooooooo much!!!!
*December 11, 2011*

**statistics**

Three percent of the widgets produced by machine 1121 are defective. what is the probablity that a box of 30 widgets produced by that machine contains two or more defective widgets?
*December 10, 2011*

**math**

7 in by 8 in
*December 8, 2011*

**math**

A room measures 12 feet by 15 feet. find the scale that would allow the room to be shown as large as possible on a piece of paper. explain your reasoning.
*December 8, 2011*

**College Physics**

Thank you very much
*December 6, 2011*

**College Physics**

A monatomic ideal gas is compressed adiabatically from a pressure of 1.39 105 Pa and volume of 260 L to a volume of 39.0 L. What is the new pressure of the gas?
*December 6, 2011*

**math**

Two trains depart at the same time from the same station and travel in opposite directions. One train travels 25 mph faster than the other train. After 2 hours the trains are 162 miles apart. Find the speed of each train.
*December 5, 2011*

**math**

Two trains depart at the same time from the same station and travel in opposite directions. One train travels 25 mph faster than the other train. After 2 hours the trains are 162 miles apart. Find the speed of each train.
*December 5, 2011*

**Science HELP**

when traveling only a tiny distance through rock below the earths surface what happens to alpha particles ?
*December 5, 2011*

**Science**

what can alpha particles cause significant damage to ?
*December 5, 2011*

**calculus**

Being some distance from a mountain a man looks up at a 9 degree angle to see the top of the moutain. he then moves 13 miles away from the mountains at looks up at a 3.5 degree angle to see the top of the mountain. How tall is the mountain?
*December 4, 2011*

**AP Chemistry**

5 J
*December 4, 2011*

**Physics**

A child of mass 40 kg stands beside a circular platform of mass 100 kg and radius 1.8 m spinning at 2.6 rad/s. Treat the platform as a disk. The child steps on the rim. a) What is the new angular speed; rad/s b) She then walks to the center and stay there. What is the angular ...
*December 4, 2011*

**Physics**

A circular disk of mass 0.3 kg and radius 40 cm, initially not rotating, slips down a thin spindle onto a turntable (disk) of mass 1.7 kg and the same radius, rotating freely at 3.1 rad/s. a) Find the new angular velocity of the combination; A circular disk of mass 0.3 kg and ...
*December 4, 2011*

**Physics**

A turntable with a moment of inertia of 0.017 kg*m^2 rotates feely at 3.3 rad/s. A circular disk of mass 240 g and diameter 26 cm, and initially not rotating, slips down a spindle and lands on the turntable. a) Find the new angular speed. b) what is the change in kinetic energy?
*December 4, 2011*

**Physics **

A turntable with a moment of inertia of 0.017 kg*m^2 rotates feely at 3.3 rad/s. A circular disk of mass 240 g and diameter 26 cm, and initially not rotating, slips down a spindle and lands on the turntable.
*December 4, 2011*

**biology**

Ectothermic organisms have body temperatures that vary with the temperature of their surroundings. Discuss the effect this variation might have on the functioning of enzymes in these organisms. Suggest some ways ectothermic organisms might cope with this problem.
*December 4, 2011*

**geometry**

The area of a particular regular hexagon is x^3 square units, where x is the measure of the distance from the center of the hexagon to the midpoint of a side. what is the side length of a hexagon?
*December 3, 2011*

**Precalculus**

A builder has 600 feet of fencing to enclose three adjacent rectangular partioned areas. Find the largest possible enclosed area of the partioned areas.
*December 2, 2011*

**Physics**

A small disk of radius R1 is mounted coaxially with a larger disk of radius R2. The disks are securely fastened to each other and the combination is free to rotate on a fixed axle that is perpendicular to a horizontal frictionless table top. The rotational inertia of the ...
*December 2, 2011*

**math**

A secretary can type 8 pages per hour.There are a total of 96 pages to type. How many pages remain to be typed after 6 hours?
*December 2, 2011*

**Math**

In a flower box there are nine red flowers and six white flowers. There are three times as many yellow flowers as white ones. How many flowers are there in all?
*December 1, 2011*

**physics**

A bicyclist is traveling at 19.3 km/h when he speeds up with a constant acceleration of 0.67 m/s2. What is his velocity after 5.00 s?
*November 30, 2011*

**Science**

A block of mass 3.1 kg hangs vertically from a frictionless pulley of mass 5.9 kg and radius 14 cm. Treat the pulley as a disk. Find: a) the acceleration of the block; b) the tension in the rope; c) the speed of the block after it has fallen 55 cm, assuming it started at rest:
*November 30, 2011*

**Science**

A torque of 60 N*m acts on a wheel of moment of inertia 30 kg*m^2 for 5 s and then is removed. a) What is the angular acceleration of the wheel? b) How many revolutions does it make in 15 s if it starts at rest?
*November 30, 2011*

**Science**

Two particles with masses 3.1 kg and 6.6 kg are connected by a light rod of length 4 m. Find the moment of inertia of the system about an axis perpendicular to the rod and passing through: a) the midpoint of the rod; b) the center of mass of the system of particle:
*November 30, 2011*

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