# Elaine

Popular questions and responses by Elaine-
## physics

A 20kg traffic light hangs midway on a cable between two poles 40meters apart. If the sag in the cable is .4 meters, what is the tension in each side of the cable?

*asked on October 19, 2008* -
## physics

A stone is dropped from a 75 m high building. when this stone has dropped 15m, a second stone is thrown downward with an initial velocity such that two stones hit the ground at the same time. find a. time taken for the first stone to fall 75m. (b) the time

*asked on October 19, 2010* -
## english

Some people are so ____ living near a nuclear plant that they want the plant's license to be ___. They say the plant threatens ever homeowner's right to safety.

*asked on February 24, 2013* -
## Finance

5.3 The manager of a large computer network has developed the following probability distribution of the number of interruptions per day: Interruptions (X) P1X2 0 0.32 1 0.35 2 0.18 3 0.08 4 0.04 5 0.02 6 0.01 a. Compute the expected number of interruptions

*asked on November 27, 2012* -
## algebra

One day the temperature dropped from 4 degrees F to -15 dgrees f. How many degrees did it drop?

*asked on December 22, 2009* -
## Calculus

If x=2sec (theta), express tan(theta) in terms of x.

*asked on February 23, 2012* -
## 3rd grade art

In the painting "Sunday Afternoon on the Island of La Grande Jatte", by George Seurat, what is the story the painting is telling? What is happening?

*asked on March 31, 2009* -
## PHYSICS

A proton is confined to a nucleus whose diameter is 5.5*10^-15m. If this distance is considered to be the uncertainty in the position of the proton, what is the minimum uncertainty in its momentum? I don't really get the uncertainty concept, and how can I

*asked on April 29, 2008* -
## PHILOSOPHY

1. Some regular churchgoers believe that taxpayers' dollars should not be used to fund laboratories that carry out tests on animals for medical research. Hence, it is wrong to go on spending taxpayers' dollars for that purpose. Answer: False Cause 2. Yogi

*asked on September 26, 2017* -
## Physics 30

Two point charges objects produce an electric force on each other of 3.6x10^-2 N. What is the electric force between them if the distance is increased five times?

*asked on February 6, 2016* -
## English

Change the italicized clause to nominative absolute. As the game was over the contestants quietly filed out of the room

*asked on January 18, 2016* -
## Teacher Aide

If you're preparing a bulletin board,how many ideas should you try to get across at one time?

*asked on October 28, 2014* -
## math

Find the z-score such that the area under the standard normal curve to the left is 0.82. ______ is the z-score such that the area under the curve to the left is 0.82. (round 2 decimal places as need)

*asked on December 3, 2013* -
## Chemistry

a 25.0 mL sample of .050 M solution of aqueous trimethylamine is titrated with a .063 M solution of HCl. calculate pH the solution after 10.0 mL, 20.0 mL, 30.0 mL of acid have been added. pKb of (CH3)_3_N= 4.19 at 25 degrees C

*asked on November 11, 2012* -
## Calculus

I have to use integration by parts to integrate tan^-1 (1/x)dx. I'm not sure what to use as u or dv. We were taught to use uv-integral of (vdu) to do this.

*asked on February 15, 2012* -
## math

(6x-5y)^2= 36x-25y 6x-5y (4x+5y)^2 16x+25y 4x+5y Please check to see if right. If not corrected for me.

*asked on June 2, 2010* -
## Alegebra

Use the intercepts to graph the equation. 4x-12=3y It should be pair. is the answer (4,3)

*asked on March 6, 2009* -
## Math

Simplify (13 x+ 10y) +(6x -7y) +5x= 13 x +6x +5x +10y -7y 24 x +10y -7y 24 x+3y check this

*asked on November 18, 2019* -
## Math

7^2 +3[81-(4 6)] Help me 49+243-24=243-24=219 219+49=263 Is this right

*asked on August 21, 2019* -
## Math

The front door of a house is 80 inches tall. What is the volume of the door? Top is 2 in. the length is 36 in. What is the volume of the door? A bedroom door in the house has the same dimensions as the front door, but the length is 30 inches rather than 36

*asked on April 14, 2018* -
## Physic

A force of 7000N is applied to drag a 500 kg cow across a flat level floor to McSlaughter House. The cow has an acceleration of 2.5 m/s2. (a) what's the weight of the cow? (b) what is the normal force acting on the cow? (c) What is the resultant force that

*asked on March 3, 2017* -
## Physics

A baseball with a mass of 150 g is thrown horizontally with a speed of 39.5 m/s (88 mi/h) at a bat. The ball is in contact with the bat for 1.15 ms and then travels straight back at a speed of 45.0 m/s (101 mi/h). Determine the average force exerted on the

*asked on March 2, 2014* -
## Chemistry

Calculate the density of 150g of a 25% by wieght solution of sodium chloride dissolved in water and the volume of solution is 145ml.

*asked on January 24, 2012* -
## Confidentiality of Health Information

IN REGARD TO ELECTRONIC MEDICAL RECORDS (EMRS) WHAT IS THE POLICY FOR DISCLOSING AUTHORIZED DATA REQUESTED BY THIRD PARTIES?

*asked on July 14, 2011* -
## health care ECONOMICS

How did the Haiti disaster affect healthcare costs in the United States in the short run

*asked on May 6, 2011* -
## role of and health care/nursing role

in health care what trends do you anticipate influencing curriculum content and structure in the next decade?

*asked on April 6, 2011* -
## Language Arts

What parts of the rhetorical triangle is irrelevant to formalist critics

*asked on November 7, 2010* -
## math

Y^2-4y+3/y^2-9*4y+12/y2-2y+1= 16y^4+36/2y^5+8 check this please

*asked on May 24, 2010* -
## BIOCHEMISTRY

WHAT CONCENTRATION OF SOLUTION DO YOU GET IF YOU DISSOLVE 45G OF GLUCOSE (MOLECULAR WEIGHT =180) IN 500ML OF WATER?

*asked on March 10, 2010* -
## Critical Thinking

How would you re-write the following email so that it follow the critical thinking rules? I don’t have a lot of time to explain but off the top of my head answer is as a reader critical thinking affects me all ways. Not just reading but writing too.

*asked on September 10, 2009* -
## Computers(Java Programming)

Service Class: Lottery Write a Lottery class that simulates a lottery. The class should define an array of five integers named lotteryNumbers. The constructor should use the Random class (see the Java API) to generate a random number in the range of 0 to

*asked on September 8, 2009* -
## 3rd grade-social studies

Proverb: "It does not matter if the cat is black or white so long as it catches rats". Go beyond and break it down. Draw a picture for each part then write what it could mean. Not sure what has to be done here.

*asked on February 5, 2009* -
## 3rd grade-music

The song "Minnie the Moocher" by Cab Halloway-retell what the story is about. Use details in song to support your thinking.

*asked on November 1, 2008* -
## PHYSICS

The average kinetic energy of an atom in a monatomic ideal gas is given by KE=3/2kT, where k=1.38*10^-23J/K and T is the Kelvin temperature of the gas. Determine the de Broglie wavelength of a helium atom (mass=6.65*10^-27kg) that has the average kinetic

*asked on April 29, 2008* -
## Algebra

Can someone help. Solve by completing the square. x^2=5x+2 x^2 -5x -2 = 0 x^2 - 5x + (5/2)^2 -2 = (5/2)^2 (x- 5/2)^2 = 2 + 25/4 = 33/4 x - 5/2 = sqrt (33/4)

*asked on July 12, 2007* -
## Math

12k-15a +21t over 3=4k-5+7 check this to c if it right

*asked on January 14, 2020* -
## Math

Jen has read 4/5 of a book. The net day she read 2/3 of what she had left. What fraction of the books is left to read? 4/5 x 2/3= 4/5 x3/2= 12/10=1 2/10=1 1/5 is this right

*asked on November 19, 2019* -
## Math

Tim earns $150/week plus $15.50 for each desk he assembles. How many desks does he need assemble to make $ 400 in one week? 150 +15.50 =400 15.50 x=248 x= 248/15.50=16.129 15.50 x16=248 248 +150=398 need 16 chairs check this

*asked on November 12, 2019* -
## Chemistry

Hi! I just have a question about significant figures. If an answer I got for the percentage composition of KCN is 60.043% for K and it needed 4 significant figures, would I omit the zero after the decimal and write it as 60.43% or keep it is 60.043%?

*asked on October 15, 2019* -
## Math

The lengths of two sides of a triangle are 15 inches each. The third side measures 10 inches. What type of triangle is this? Explain your answer using geometric terms.

*asked on April 17, 2018* -
## Math

A bedroom door in the house has the dimensions as the front door, which is at top 2 in. and the bottom is 36 in. but the length is 30 inches rather than 36 inches. How much greater is the volume of the front door than the bedroom door?

*asked on April 13, 2018* -
## Math

You begin to fill a bucket with water at 9 am. Each minute you double the amount of water in the bucket. If it takes you 1 hour to fill the bucket, at what time is the bucket one-quarter full?

*asked on April 3, 2017* -
## calculus

Use the method of cylindrical shells to find the volume of the solid obtained by rotating the region bounded by the given curves about the x-axis. xy = 2, x = 0, y = 2, y = 4

*asked on March 7, 2017* -
## Physic

A 25 kg box is set on a flat surface with us=0.62 and uk=0.49. A force of 100N is applied to the box through a rope which makes and angle of 30 degrees with the horizon. (a)what's the component of Fa that is attempting to move the box sideways? (b) what's

*asked on March 3, 2017* -
## diameter

The famous rotunda of the Capital Bldg has a floor that is 96 feet in diameter. A marble restoration company charges $40 per sq. yard for its services. How much would it cost to restore the entire floor in the rotunda? My answer 96 feet in diameter C=πd

*asked on May 1, 2016* -
## Geometry

A football player completed a 45 yard pass. How many inches is that? How many centimeters? I performed the dimensional analysis 45 yds * 36 in over 1yd final step was 1620 in * 2.54 cm =4114.80 cm

*asked on April 30, 2016* -
## programming

Create the logic for a program that calls a method that computes the final price for a sales transaction. The program contains variables that hold the price of an item, the salesperson's commission expressed as a percentage, and the customer discount

*asked on February 18, 2016* -
## Physics 30

calculate the netforrce on q2? calculate the net force on q3? q1=+3.0 MC q2=+3.0MC q3=-6.0MC q1-------20cm-------------q2 I I I 50 cm I I I q3

*asked on February 6, 2016* -
## Physics 30

A. Calculate the net force on q2? b. calculate the net force on q3? q1= +2.0 MC q2=+3.0 MC q3=+6.0 MC q1-----30cm-----q2-----------45cm----------q3

*asked on February 6, 2016* -
## Physics 30

The circuit has two resistors? V= 22V R= 27 Komega R=? I= 12mA

*asked on February 6, 2016* -
## Physics 30

A circuit with a single 25.0 omega resistor runs for 5.00 s. During this time10.0 C pass through a point in the circuit. a. What is the power rating of this circuit? b. How much energy is used?

*asked on February 6, 2016* -
## PHYSICS

how far apart are two point charges of 5.0x10^-6 C and 6.0x10^-6 C if they produce an electric force on each other of 0.62 N?

*asked on February 6, 2016* -
## chem 30

When 7.5 g of ethane was completely burned, all the heat produced was used to heat 1.50 kg of water. If the temperature of water rose from 20EC to 80EC, the heat of combustion of ethane is

*asked on January 24, 2016* -
## Math

A shaded circle has a diameter of 12 feet. Within the circle, is another white circle with a radius of 2 feet. What is the area of the shaded circle.

*asked on May 17, 2015* -
## Statistics

The percentage of various colors are different for the "peanut" variety of M&M's candies, as reported on the Mars, Incorporated website. Brown: 12% Yellow: 15% Red: 12% Blue: 23% Orange: 23% Green: 15% A 14-ounce bag of peanut M&M's is randomly selected

*asked on March 28, 2015* -
## Dynamics

The acceleration of a particle which moves along the x axis is given by a=4x+5x^(3/2) The particle has speed of 2m/s when x=1m x is in meters a is in m/s^2 evaluate the velocity when x = 8m I know that I need to use kinematic eqn 3 adr = vdv then take the

*asked on January 12, 2015* -
## Math

explain base 10

*asked on December 8, 2014* -
## alegebra

A turtle starts moving north at 4 feet per minute from a point P. Five minutes later, a snail starts moving south at 2 feet per minute from a point 50 feet due east of P. What is the distance (in feet) between the two animals five minutes after the snail

*asked on September 22, 2014* -
## math

A turtle starts moving north at 4 feet per minute from a point P. Five minutes later, a snail starts moving south at 2 feet per minute from a point 50 feet due east of P. What is the distance (in feet) between the two animals five minutes after the snail

*asked on September 22, 2014* -
## psycholocy

Professor Stone follows patterns as they relate to human habitats, development, and behaviors. She is _____________.

*asked on August 11, 2014* -
## College Anatomy

Within the nervous system, the (a) are to the ganglia as a tract is to a (b).

*asked on October 24, 2013* -
## Anatomy

The ______ ______ (two words), a syndesmosis, which provides a pivot point where two parallel-aligned bones, like the tibia and fibula, can move against each other.

*asked on October 3, 2013* -
## Anatomy

The ______ of the knee not only provide cushioning but assist with stability and improving fit between the articulating surfaces during movement.

*asked on October 3, 2013* -
## Anatomy

A ________ are designed to alleviate friction that may be caused by accessory structures, like a tendon, during movement of a synovial joint.

*asked on October 3, 2013* -
## Anatomy

Orthodontic braces can be painful, this is due in part to placing mechanical stress on the ____________ (joint type), causing ___________ of the alveolar sockets of the mandible/maxilla as the teeth are slowly repositioned.

*asked on October 3, 2013* -
## Thermodynamics

The initial state consists of a closed system containing one mole of water (liquid) at 85°C and 1 atmosphere pressure. The immediate surroundings are also at 85°C and 1 atmosphere pressure. The change in state is described as this one mole of liquid

*asked on October 3, 2013* -
## Materials Transport

You have a vertical plate which is 20 cm square and 0.75 cm thick. The plate has a thermal conductivity of 4 W/mK. The top edge of the plate is kept at a temperature of 325⁰C, and the bottom edge is kept at a temperature of 275⁰C. The vertical edges of

*asked on September 30, 2013* -
## Materials Transport

You have a vertical plate which is 20 cm square and 0.75 cm thick. The plate has a thermal conductivity of 4 W/mK. The top edge of the plate is kept at a temperature of 325⁰C, and the bottom edge is kept at a temperature of 275⁰C. The vertical edges of

*asked on September 30, 2013* -
## college math

I need help to simplify (-9)(-7) + 6?

*asked on September 8, 2013* -
## sentence@spelling

which one of the following fragment is a prepositional phrase going to cliveland. listeningto her heart. cmopleted her assigment. during the darkest. night.

*asked on July 23, 2013* -
## Mathematics

what geometric figure/shape can we find in enchanted kingdom, rizal shrine in laguna, and in gardenia factory?????? i really need it plz help me T.T

*asked on February 22, 2013* -
## Chemistry

What is the mass of a 8.64% (m/m) AlCl3 solution containing 7.59g AlCl3?

*asked on February 7, 2013* -
## Chemistry

Cow's milk contains 32g of protein in 1052g of milk. What is mass/mass percent concentration of protein in the milk?

*asked on February 7, 2013* -
## Chemistry

What is the mass of lithium chloride in 27.8g of a 4.85% (m/m) LiCl solution?

*asked on February 7, 2013* -
## Chemistry

If a 8.0mL sample of blood plasma has a mass of 8.223g and contains 1.233g of urea, what is the mass/mass percent concentration of urea in the sample?

*asked on February 7, 2013* -
## physics

The SI unit of energy can be expresses as what?

*asked on December 4, 2012* -
## Chemistry

Assuming all gases are at the same temperature and pressure, how many milliliters of hydrogen iodide are produced from 155 of ?

*asked on November 2, 2012* -
## Physics

Bob jumps from a 2.0 m high table and wants to jump over a 0.85 m radius ball. How fast must Bob move horizontally to not land on the ball? If we use kinematics equations for projectile, the answer is 2.66 m/s; however, with this velocity the person will

*asked on September 19, 2012* -
## case management

Identify the differences and similarities of case management in the community setting and in the managed care environment?

*asked on September 9, 2012* -
## Calculus

assume that f(x)= x^3(x-2)^2 a) find the x-intercepts algebraically b) find all the critical points c) use the first derivative test to determine local minimums and maximums d)find all inflection points e)state the concavity of the graph on appropriate

*asked on April 24, 2012* -
## Math 208

(x+1)(x+3)=

*asked on February 25, 2012* -
## Calculus

Evaluate the integral from [(2/square rt 2),0] of dx/sqaure root of (4-x^2)

*asked on February 23, 2012* -
## Calculus

Integrate [1/square root of(e^(2x)-1)]. I have to use u substitution. We are doing the integrals of inverse trig functions, but I cannot get it to work out!

*asked on February 5, 2012* -
## algebra

driving at 46 mph one covers 19mi. in how many seconds?

*asked on July 31, 2011* -
## math

A cable 40 feet long is cut into three pieces so the length of the second piece is 4 times the length of the first piece, and the third piece is five more than twice as long as the first piece. Find the length of the pieces.

*asked on May 31, 2011* -
## math

A motorcycle leaves Colorado Springs traveling north at an average speed of 47 miles per hour. One hour later, a car leaves Colorado Springs traveling south at an average speed of 54 miles per hour. How long after the motor cycle leaves will it take until

*asked on May 31, 2011* -
## logic

I need help proving these arguments using rules of inference, please. (S>B) > (SvK) (Kv~D) ~ (H>S) ~S.W / ~H ~A > (B>~C) ~D > (~C >A) D v ~A ~D

*asked on May 18, 2011* -
## Logic

Need help supplying proo f for the following problem using the rules of inference 1. (Z.Y)> X 2. ~O>Z 3. ~Y>O 4. ~O.T /S

*asked on May 16, 2011* -
## COM/155

When writing a paragraph, it is important that the topic sentence and supporting points within that paragraph be directly related. What would be the reaction of a reader if the topic sentences in an essay did not coincide with the supporting points?

*asked on May 1, 2011* -
## HCS/552

How does the Afghanistan opium black market affect the U.S. pharmaceutical industry?

*asked on April 29, 2011* -
## Chemistry

For the given reaction, how many moles of water will be formed starting with 45.0 moles of aluminum hydroxide: 2AL(OH)3(s) + 3 H2SO4 > Al2(SO4)3 + 6H2O

*asked on April 3, 2011* -
## Chemistry

For the given reaction, how many moles of ammonia will result from 4.0 moles of nitrogen N2(g) + 3H2(g) > 2NH3(g)

*asked on April 3, 2011* -
## Chemistry

How many milliters of 1.80M HCl are required to react with 30.0 grams of calcium hydroxide according to the given equation: CA(OH)2(s) + 2HCl(aq)> CaCl2(aq) + 2H2O(l)

*asked on April 3, 2011* -
## ALGERBRA

CAN YOU PLEASE TELL ME THE SOLUTION FOR THE FOLLOWING 5X>-4 BUT THE SIGN HAS A LINE UNDER IT I REALLY NEED HELP

*asked on March 29, 2011* -
## math

6x=48 x=

*asked on March 24, 2011* -
## math

subtract -5-12

*asked on March 24, 2011* -
## math

can you divide -35by 5

*asked on March 24, 2011* -
## algerbra

rewrite division as multiplication and answere as fraction -37-(78)

*asked on March 24, 2011* -
## algerba

rewrite division as mulitplication -37-(78)

*asked on March 24, 2011* -
## math

in triangle abc angle b is 5x angle a and c is 16 degree less than 4 times angle a the size of angle a b c in decimal is

*asked on March 23, 2011*

## Pages

**1**- 2