# Amanda

Popular questions and responses by Amanda-
## physics

a 500 N person stands on a uniform board of weight 100 N and length 8 m. the board is supported at each end. if the support force at the right end is three times that at the left end, how far from the right end is the person? please explain

*asked on January 4, 2009* -
## Calculus

A man 5.50 ft tall approaches a street light 18.0 ft above the ground at a rate of 4.0 ft/s. at what rate is the end of the man's shadow moving when he is 9.0 ft from the base of the light?

*asked on August 27, 2011* -
## Health

What is a doctor’s responsibility if a patient requests restrictions on the use of his or her PHI? A. The doctor must comply with the patient’s wishes. B. The doctor need not comply with the patient’s wishes if HIPAA would otherwise permit

*asked on April 22, 2009* -
## chem

Write the complete ionic equation for Cu(NO3(aq)+K2S(aq)and namd write the formula for the spectator ions in this reaction? This is what I got pls. check it: complete ionic equation: Cu^19aq)+K^1(aq)+S^-2(aq)=K^1(aq)+NO3^-1(aq)+Cu2S(s) net ionic equation:

*asked on October 5, 2012* -
## Chemistry

Calculate how much acetylene (C2H2) can be produced from 358 g of H2O and an excess of CaC2 if the percent yield for this reaction is 94.5%. CaC2 + 2H2O -> C2H2 + Ca(OH)2

*asked on November 25, 2014* -
## Geometry/Math

Two right circular cylinders have equal volume. The first cylinder has a radius of 6 inches and a height of 12 inches. What is the number of inches in the height of the second cylinder if its radius is 8 inches? Express your answer as a common fraction,

*asked on May 13, 2015* -
## Math

5 letters are typed, with repetition allowed. What is the probability that all 5 will be vowels? Write your answer as a percent. Round to the nearest hundredth of a percent as needed

*asked on November 19, 2018* -
## math

How many ways are there to move from one corner of a cube to the diagonally opposite corner, in three moves, each of which travels along one edge of the cube?

*asked on May 20, 2015* -
## chemistry

Sodium metal and water reacts to form hydrogen and sodium hydroxide. If 5.98g of sodium react with water to form .26g of hydrogen and 10.40g of sodium hydroxide, what mass of water was consumed in the reaction?

*asked on July 7, 2010* -
## Science

The number of moles of H2O produced in reaction of 50ml 1.0 M HCl and 50mL 1.0 M Naoh

*asked on June 24, 2008* -
## Health

Which one of the following factors would be considered de-identified information? A. Patient name: Charles Logan B. Patient policy number: 65388296531 C. Social Security Number: 555-55-5555 D. Patient condition: improved breathing with new medication I've

*asked on April 22, 2009* -
## Chemistry

3NO2 + H2O -> 2HNO3 + NO Calculate the percent yield for the following reaction if 76.8 g of H2O reacted and 125 g of NO were produced.

*asked on November 25, 2014* -
## Physics

Please show how you got the answers, not just the answers. A 40.0 N force stretches a vertical spring 0.250 m. (A) What mass must be suspended from the spring so that the system will oscillate with a period of 1.0 s? (B) If the amplitude of the motion is

*asked on July 14, 2010* -
## Statistics

The number of chocolate chips in a bag of chocolate chip cookies is approximately normally distributed with a mean of 1264 chips and a standard deviation of 116 chips. (a) Determine the 28th percentile for the number of chocolate chips in a bag. (b)

*asked on June 30, 2015* -
## Calculus (derivatives)

Find the derivative of cos^2(4x)

*asked on November 3, 2009* -
## Maths set

There 70 women in a club. 20 play volley ball only ,10 play basketball only , 6 play tennis ball only. 4 play all the games and an equal number play two games only. Illustrate this information in a Venn diagram. Find the number of women who play

*asked on October 28, 2017* -
## Math

Suppose a baseball player had 211 hits in a season. In the given probability distribution, the random variable X represents the number of hits the player obtained in the game. x P(x) 0 0.1879 1 0.4106 2 0.2157 3 0.1174 4 0.0624 5 0.0060 a.) Compute and

*asked on November 26, 2013* -
## Math

if there is 24cm3 then what is the volume?

*asked on July 28, 2020* -
## chemistry

Acetylene gas, c2h2, burns in oxygen to produce carbon dioxide and water. If 61.4 g of co2 are produced when 22.7g c2h2 react with sufficient oxygen, what is the percent yield for the reaction?

*asked on October 14, 2011* -
## Math

Which ratio is equivalent to 3/7? A. 6 to 10 B. 9:21 •• C. 12/35 D. 7 to 3

*asked on January 12, 2016* -
## Macroeconomics

Cannot attach graph! a. If the actual price level exceeds the expected price level reflected in long-term contracts, real GDP equals _______ and the actual price level equals _______ in the short run. b. The situation described in part (a) results in a(n)

*asked on October 24, 2012* -
## Physics

An object is being acted upon by three forces and moves with a constant velocity. One force is 60N along the x-axis, the second force is 75N along a direction making a counterclockwise angle of 150 degrees with the x-axis. What is the direction of the

*asked on October 6, 2010* -
## Financing and Budget

Which of the following taxes must be paid only by the employer? A. Federal income B. FICA C. Federal unemployment D. State C.

*asked on November 11, 2014* -
## Physics

A child sits on the edge of a spinning merry-go-round that has a radius of 1.5 m. The childs speed is 2 m/s. What is the Child's acceleration?

*asked on June 14, 2011* -
## Math

Which ratio is equivalent to 4/16 A. 2:4•• B. 6 to 20 C. 8:32 D. 12 to 64 Write the ratio as a unit rate. 286 miles in 5 1/2 hours A. 36 miles per hour B. 52 miles per hour •• C. 57.2 miles per hour D. 114.4 miles per hour Which typing time is the

*asked on January 12, 2016* -
## math

the printed matter on a 18 by 22 centimeter page of a book must cover 96 square centimeters.If all margins are to be the same width, how wide should they be?

*asked on May 12, 2012* -
## Math

1. Explain the advantages and disadvantages of both the substitution method and the elimination method for solving a system. Help please. The only reasons I can think of is because in substitution it might be more difficult cause there's a possibility of

*asked on February 18, 2008* -
## I am having trouble with this homework question ,

Here is the probability model for the blood type of a randomly chosen person in the United States. Blood type O A B AB Probability 0.53 0.21 0.03 0.23 What is the probability that a randomly chosen American does not have type O blood? % Round to the

*asked on October 1, 2016* -
## Physics

A bullet with a mass of 0.01kg is fired horizontally into a block of wood hanging on a string. The bullet sticks in the wood and causes it to swing upward to a height of 0.1m If the mass of the wood block is 2kg, what is the initial speed of the bullet?

*asked on October 11, 2010* -
## Math

A woman has a total of $9000 to invest. She invests part of the money in an account that pays 7% per year and the rest in an account that pays 8% per year. If the interest earned in the first year is $664, how much did she invest in each account?

*asked on January 27, 2010* -
## Math - check answer

Frogs have been breeding like flies at the Enormous State University (ESU) campus! Each year, the pledge class of the Epsilon Delta fraternity is instructed to tag all the frogs residing on the ESU campus. Two years ago (t = 0) they managed to tag all

*asked on September 21, 2016* -
## algebra I

A water balloon is dropped from a rooftop that is 40 feet tall. How long will it take to fall to the ground? Round to the nearest tenth and include units.

*asked on August 14, 2014* -
## chemistry

A buffer is made by dissolving HC2H3O2 and NaC2H3O2 in water. Write an equation that shows how this buffer neutralizes added acid. Express your answer as a chemical equation. Identify all of the phases in the answer.

*asked on December 3, 2012* -
## Pre-Calculus

A rectangle is bounded by the x-axis and the semicircle y = √36 – x2, as shown in the figure below. Write the area A of the rectangle as a function of x, and determine the domain of the area function. A = all real numbers except x = 36 all real numbers

*asked on October 2, 2011* -
## physics

A block with mass m = 17 kg rests on a frictionless table and is accelerated by a spring with spring constant k = 4201 N/m after being compressed a distance x1 = 0.556 m from the spring’s unstretched length. The floor is frictionless except for a rough

*asked on March 20, 2018* -
## Biology

Has anyone done the effect of cell size on material transport portfolio in Connections academy?

*asked on October 28, 2016* -
## chemistry

Consider the unbalanced reaction Ti(s) + Cl2(g) --> TiCl4(s) When 10.3 g of Ti react with 12.7 g of Cl2, 16.2 g of TiCl4 are obtained. The theoretical yield of TiCl4 is , the limiting reactant is and the percent yield is %. (Remember to use correct sig

*asked on March 4, 2016* -
## Statistics

12) Allergic reactions to poison ivy can be miserable. Plant oils cause the reaction. Researchers at the Allergy Institute did a study to determine the effects of washing the oil off within 5 minutes of exposure. A random sample of 1000 people with known

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

6)You are given the information that P(A) =0.30 and P(B) =0.40 (a) Do you have enough information to compute P(A or B)? Explain.(events A and B are mutually b) If you know that events A and B are mutually exclusive , do you have enough information to

*asked on October 24, 2013* -
## Principles of Management - Effective Management

Please double check my answers please! 1. a team manager is resolving the conflicts that exist among the members of his team in an organization. this is an example of: a. planning b. organizing c. leading d. controlling answer C 2. a manager at a grocery

*asked on July 10, 2012* -
## Management

Which of the following statements about Maslow's needs hierarchy is correct? A. Esteem needs must be satisfied before one strives to fulfill social needs. B. Self-actualization is a growth need. C. safety needs are more basic than physiological needs. D.

*asked on May 29, 2012* -
## Chemistry

Okay so I kinda understand where to put the numbers into the formula but i'm not sure how to calculate the distance so could someone kindly walk me through the problem so i can understand it. Thank you so much. Calculate the amount of energy required for

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

Please help me with the following question: Consider the following ion; XF2-2 What is the oxidation number assigned to element “X”? Show your work I'm having trouble writing the steps.

*asked on June 17, 2011* -
## Physics

A tiny spring, with a spring constant of 1.20 N/m, will be stretched to what displacement by a 0.005 0-N force?

*asked on December 19, 2010* -
## Chemistry

A sample of sandstone consists of silica, SiO2, and calcite, CaCO3. When the sandstone is heated, calcium carbonate, CaCO3, decomposes into calcium oxide, CaO, and carbon dioxide. CaCO3(s) → CaO(s) + CO2(g) What is the percentage of silica in the

*asked on September 29, 2009* -
## Math

A man has $1.15 in quarters and dimes in his pocket. If he has one more dime than he has quarters, how many of each coin does he have?

*asked on October 31, 2014* -
## Theories and issues in working with school-age chi

The term distal supervision means A. supervision by a nonworking parent. B. a lack of supervision. C. self-supervision. D. supervision from a distance. Is this answer C.

*asked on October 26, 2014* -
## Math

Two boats are approaching the same dock. Boat A measures 37° from boat B to the dock. Boat B measures 68° from boat A to the dock. What is the angle the boats make with the dock?

*asked on June 12, 2014* -
## Chemistry - check answer

A 20.0 L reaction vessel contains 0.016 moles CO2, 1.05 moles of CO, and 2.00 moles of C. The mixture is approaching the following equilibrium: CO2(g) + C(s) 2CO(g) a) Calculate the reaction quotient Q. b) If value of K is 1.17, predict which direction the

*asked on April 20, 2014* -
## English

choices...curtail,devastate,digress,incentive,incorporate,indispensable,intermittent,rigor,squander,succumb here is the sentences: 1,2:Duane feels he ____(e)d too many years in inactivity, so now he welcomes the _______s of an exercise program. 3,4. The

*asked on February 18, 2013* -
## chemistry

Use Equation 7.1 and assuming that core electrons contribute 1.00 and valence electrons contribute nothing to the screening constant, S, calculate Zeff} for these two ions. Express your answers as integers. Enter your answers numerically separated by a

*asked on October 31, 2011* -
## Chemistry

a 25.0mL sample of a 0.100M solution of aqueous trimethylamine is titrated with a 0.125M solution of HCl. Calculate the pH of the solution after 10.0, 20.0, and 30.0 mL of acid have been added; pKb of (ch3)3N=4.19

*asked on November 8, 2010* -
## Precalculus

If f and g are functions of time, and at time t = 3, f equals 8 and is rising at a rate of 3 units per second, and g equals 5 and is rising at a rate of 8 units per second, then the product fg equals __ and is rising at a rate of __ units per second. I got

*asked on March 29, 2017* -
## math

Richard is 6 years older than Lisa, and in 5 years the sum of their ages will be twice as much as the sum of their ages 4 years ago. Find their present ages.

*asked on January 20, 2017* -
## Theories and issues in working with school-age chi

According to Maslow's hierarchy of needs, trying to earn respect, approval, and success are part of which level of the pyramid? A. Safety needs B. Survival needs C. Esteem needs D. Physiological needs C.

*asked on October 24, 2014* -
## Physics

Glycerin is poured into an open U-shaped tube until the height in both sides is 20 {\rm cm}. Ethyl alcohol is then poured into one arm until the height of the alcohol column is 20 {\rm cm}. The two liquids do not mix. What is the difference in height

*asked on December 7, 2012* -
## Math

Find how much interest $15,000 earns in 4 years in a certificate of deposit paying 8.5% interest compounded quarterly.

*asked on June 13, 2012* -
## physics

A 0.060-kg handball is thrown straight toward a wall with a speed of 9 m/s. It rebounds straight backward at a speed of 6.7 m/s (a) What impulse is exerted on the wall? magnitude 0.942 kg·m/s (b) If the ball is in contact with the wall for 3.0 ms, what

*asked on November 7, 2011* -
## precalculus

The earth's atmospheric pressure, P, in terms of height above sea level is often modeled by an exponential decay function. The pressure at sea level is 1013 millibars and the pressure decreases by 14% for every kilometer above sea level. (a) What is the

*asked on March 3, 2011* -
## chemistry

write the overall, balanced molecular equation and indicate which element is oxidized and which id reduced for the following reactions. Include phase abbreviations. a) Mg(s)+Cr(C2H3O2)3(aq)--->? b) Cd(s)+AgNO3(ag)---->?

*asked on June 12, 2010* -
## geometry

List the following elements in proper set notation. Place the elements in numerical order within the set. * 0 * 1 * 123 * 4 * 34

*asked on February 1, 2010* -
## algebra

Completely factor the following expressions. Please show work/explain t^2+4tv+4v2 4x^2-8x-12+6x 144-9p^2 5c^2-24cd-5d^2 w^2-17w+42 256z^2-4-192z^2+3 2a^2c^3-14bc^3+32c^3d^2 35g^2+6g-9 3j^3-51j^2+210j

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

Which one of the following statements is true for the base forms of verb? A. when the subject of a sentence is singular, add "-s" to the base form. B. Add "to" to the base form to create an adjective. C.Do not use a base form with plural subjects. D.Add

*asked on October 14, 2012* -
## biology

what is a notochord, and what is the notochord surrounded by

*asked on May 30, 2012* -
## Programming

Write a program (pseudocode) that would calculate and display the results for the multiplication table for values ranging from 1 to 100. This what I have so far: Declare X, Y, Z As Integer Write “10 x 10 Multiplication Table” For (X = 1; X

*asked on March 11, 2012* -
## Physics

An old car is traveling down a long, straight, dry road at 25.0 m/s when the driver slams on the brakes, locking the wheels. The car comes to a complete stop after sliding 305 m in a straight line. If the car has a mass of 755 kg, what is the coefficient

*asked on March 8, 2011* -
## Food Web

A food web contains green plants, rabbits, squirrels, mice, seed-eating birds, hawks, and owls. Which organisms in this food web would contain the greatest biomass? Which one would have the least? Explain I think that the greatest biomass would be plants

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

there are 3 miniature chocolate bars and 5 peaunt butter cups in a candy dish. judie chooses 2 of them at random. What is the probablity that both she chooses 2 miniature choclate bars?

*asked on February 25, 2010* -
## Chemistry

Dioxane C4H8O2 has an enthalpy of fusion = 145.8 Jg-1 and its melting point temp is 11 degrees C. How much energy is required to transform 142g of solid dioxane at 11 degrees C into liquid dioxane, also at 11 degrees C?

*asked on February 1, 2009* -
## Intro to computers

You have a Windows 2000 computer that has no built-in firewall so you were looking for third-party firewall to install which of these selections below will accommodate this? a) CC Cleaner b) zonealarm c) Microsoft Security Essentials or D) Malwarebytes

*asked on May 15, 2020* -
## Math

The organized crime boss and perfume king Butch (Stinky) Rose has daily overheads (bribes to corrupt officials, motel photographers, wages for hit men, explosives, and so on) amounting to $30,000 per day. On the other hand, he has a substantial income from

*asked on September 14, 2016* -
## Physics

In a typical golf swing, the club is in contact with the ball for about 0.0010s. If the 45-g ball acquires a speed of 59m/s, estimate the magnitude of the force exerted by the club on the ball.

*asked on December 2, 2015* -
## English 3

Choose the correct relative pronoun in the sentence: (answer I think is correct) Mrs. Eggelson tells _____ will listen about her health problems. whoever (whomever) The children argued about the actor _____ should receive the award. (who) whom Few people

*asked on August 27, 2015* -
## The practice of working with school age children

A common misperception among managers is that _______ play is more important, but it's actually more important for children to have _______ play. A. structured, unstructured B. limited, unlimited C. unstructured, structured D. unlimited, limited C.

*asked on October 28, 2014* -
## Theories and issues in working with school-age chi

The traditional term latchkey children refers to A. children who know how to properly use house keys. B. children who are between the ages of six and twelve. C. the key that children carry to open their door latch. D. the ability to be left alone at home.

*asked on October 26, 2014* -
## guidance

Brian comes to the block area and knocks down a building that Tim and Jody are Constructing. The most probable reason for Brian's misbehavior is that he A. has too much self-esteem.B. has lost control.C. is seeking attention.D. is destructive by nature.

*asked on October 21, 2014* -
## Math

An airplane is flying due west at a velocity of 100 m/s. The wind is blowing out of the south at 5 m/s. What is the magnitude of airplane's resultant velocity?

*asked on February 4, 2013* -
## Chemistry

Phthalates used as plasticizers in rubber and plastic products are believed to act as hormone mimics in human. The value of deltaHcombustion for dimethylphthalate (C10H10O4) is 4685 kJ/mol. Assume 1.035 g of dimethylphthalate is combusted in a calorimeter

*asked on October 15, 2012* -
## chemistry

A 27.00 mL sample of an unknown H3PO4 solution is titrated with a 0.110 M NaOH solution. The equivalence point is reached when 25.78 mL of NaOH solution is added. What is the concentration of the unknown H3PO4 solution? The neutralization reaction is:

*asked on September 27, 2012* -
## Physics

At the beginning of a new school term, a student moves a box of books by attaching a rope to the box and pulling with a force of F = 84.4 N at an angle of 64degrees. The acceleration of gravity is 9.8 m/s/s. The box of books has a mass of 14 kg and the

*asked on October 30, 2011* -
## CHEM

Calculate G° for each reaction using G°f values. MnO2(s) + 2 CO(g) Mn(s) + 2 CO2(g)

*asked on September 29, 2011* -
## mathematics

write a rule for nth term: 1/10, 3/20, 5/30, 7/40,.... i think the next term is 9/50 but i don't know how i got that

*asked on March 1, 2011* -
## Math

a bus company has 4000 passengers daily, each paying a fare of $2. for each $0.15 increase, the company estimates that it will lose 40 passengers per day. if the company needs to take in 10 450$ per day to stay in business, what fare should be charged?

*asked on February 16, 2009* -
## Math, please please help

The base length of each square-based prism in the pedestal design is 3cm less than that of the layer immediately below. a) Write an algebraic expression for the total of the top surface areas of the three prisms used to make the pedestal. x x x 2x+5 2x+5

*asked on March 25, 2008* -
## algebra 1

Soda is on sale for $0.75 a can, and you have a coupon for $0.50 off your total purchase. write a function rule for the cost of n sodas, how much would 10 sodas cost? A.C(n)=0.5n-0.75;$4.25 B. C(n)=0.75n-0.5;$7.00** C C(n)0.5n-0.5;$4.50 D C(n)=0.75n;$7.50

*asked on December 19, 2017* -
## Precalculus

Johnny's Tumblers sells plastic cups in bulk for start-up restaurants. Their cost for producing these is modeled by: c(x) = 0.02x^2 + 0.5x + 40 a) Since the marginal cost is found by taking the derivative, the formula for c'(x)= ? (My answer: 0.04x + 0.5)

*asked on March 24, 2017* -
## Chemistry

what mass of h2o is formed when h2 reacts with 384g of o2?

*asked on March 9, 2017* -
## Health HELP ME!!

Since 1964 the number of cigarettes smoked has A. Increased dramatically. B. Decreased to the near zero.•• C. Remained steady. D. Declined steadily. Correct me if I'm wrong.

*asked on January 6, 2016* -
## Physics

A 10kg mass is suspended as shown: i.gyazo[dotcom]/47dc49d5ec1eebe950472dba5f692e70.png (remove the brackets) What is the tension in the cord between points A and B? What is the tension in all of the cords? Thanks for the help, I just can't figure it

*asked on November 11, 2015* -
## Trig

Find all angles θ between 0° and 180° satisfying the given equation. (Enter your answers as a comma-separated list. Round your answers to one decimal place.) Sin θ = 1/4

*asked on November 9, 2015* -
## History

Four major candidates ran in the 1824 election, all under the "Democratic-Republican" name. One of the candidates, Andrew Jackson, was already famous. In the 1780s, he earned the right to practice law and served in various offices of the state government,

*asked on March 2, 2015* -
## Chemistry

The molar mass of glucose is 180.16g/mol A. How much glucose is needed to make 500 ml of a .44M (.44mol/1L) solution? .44M/L=180.16x.44/100ml=79.27/1000=.07927x500=39.64g/mol/550ml? B What volume of the .44M solution is needed to prepare 1L of a 5% glucose

*asked on December 2, 2014* -
## Theories and issues in working with school-age chi

Lawrence Kohlberg created the preconventional, conventional, and postconventional levels in _______ development. A. physical B. social C. cognitive D. moral D.

*asked on October 26, 2014* -
## Geometry

40. Find the surface area of a conical grain storage tank that has a height of 42 meters and a diameter of 20 meters. Round the answer to the nearest square meter. (1 point) 3,028 m2 3,971 m2 1,357 m2 1,671 m2

*asked on June 11, 2013* -
## Math

Find the effective rate corresponding to the given nominal rate. (Round your answer to the nearest hundredth of a percentage point.) (a) 4%/year, compounded quarterly ? % (b) 3%/year, compounded monthly ? %

*asked on November 23, 2012* -
## Chemistry

Please write the balanced chemical equation for reaction the following chemical reaction ozone gas, O3, reacts with 3,3,4,4,5,5-hexanmethyl-1-hexyne, H-C≡C-C(CH3)2-C(CH3)2-C(CH3)2-CH3 to produce carbon dioxide gas, CO2 , and water gas, H2O When balancing

*asked on November 8, 2012* -
## Chemistry

The complete combustion of 1.283g of cinnamaldeyde (C9H8O, one of the compounds in cinnamon) in a bomb calorimeter (Ccalorimeter=3.841 kJ/C) produced an increase in temperature of 130.32 C. Calculate the molar enthalpy of combustion of cinnamaldehydy

*asked on October 15, 2012* -
## Chemistry

I have this problem.... Hexane has a density of 0.659 g/ml. How many milliliters (mL) would a student need to pour in order to get 49.5 g of hexane? Am I to solve by using mass = density x volume? And if so, is the answer 32.62mL?

*asked on September 16, 2012* -
## Statistics

The ages (in years) of 10 infants and the number of hours each slept in a day Age, x: 0.1, 0.2, 0.4, 0.7, 0.6, 0.9, 0.1, 0.2, 0.4, 0.9 Hours slept, y: 14.9, 14.5, 13.9, 14.1, 13.9, 13.7, 14.3, 13.9, 14.0, 14.1 Find the equation of the regression line. Then

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

A calorimeter contains 22.0 mL of water at 14.0 C. When 2.50 g of X (a substance with a molar mass of 66.0 g/mol) is added, it dissolves via the reaction X(s)+H_2O(l)--------> X(aq) and the temperature of the solution increases to 25.5 C. Calculate the

*asked on April 2, 2012*