# 1.3 /73.814 In significant digit notation, divid, and the answer to two significant digits. I will be happy to critique your work

71,152 questions, page 514-
## Chemistry

At a deep-sea station 200. m below the surface of the Pacific Ocean, workers live in a highly pressurized environment. How much gas at STP must be compressed on the surface to fill the underwater environment with 2 × 107 L of gas at 22 atm? Assume that

*asked by Butterfly Fly on March 10, 2015* -
## culturally diverse

An Asian parent may not emulate the early childhood teacher's practice of praising her son for his accomplishments because: A. Praising the child might bring him bad-luck B. The parent believes that absence of criticism is itself an appropriate form of

*asked by Vanessa on September 6, 2011* -
## American Government

To what concept does this excerpt refer? "whenever any Form of Government becomes destructive of these ends, it is the Right of the People to alter or to abolish it, and to institute new Government, laying its foundation on such principles and organizing

*asked by leslie on August 19, 2016* -
## Statistics

This problem does not make any sense to me!!! I would greatly appreciate your assistance, thanks. A recent survey showed 4.6 percent of the sample of 250 had suffered some kind of identity theft in the past 12 months. a. Construct a 90 percent confidence

*asked by Tasha on October 31, 2011* -
## Literacy

The trend toward two-family income has led to A. policies allowing only one family member to work for a company. B. flexible work schedules, pregnancy benefits, and elder-care programs. C. businesses paying lower wages and hiring fewer workers. D. fewer

*asked by Heather on January 23, 2012* -
## 7th Grade Language Arts

The word simulation originally refers to the act of imitating. What meaning of the word is used in this excerpt from "What Makes Teens Tick?" "In an experiment using a driving-simulation game, he studied teens and adults as they decided whether to run a

*asked by Gabby on April 4, 2013* -
## Calculus

The Department of Agriculture is monitoring the spread of mice by placing 100 mice at the start of the project. The population, P, of the rats is expected to grow according to the differential equation dP/dt equals the product of 0.04 times P and the

*asked by Anonymous on March 6, 2018* -
## Biology...

1. References are made by the anatomist to the front,back,head and tail of the body. What anatomical reference terms are used to describe each of these directions? My answer: anterior, posterior, I am not sure with head and tail Is it superior and

*asked by Anonymous on February 3, 2013* -
## Astronomy

Imagine that you are on a mission to explore a pulsar type star. What will you find there on pulsars and pulsar planets. Using this information, describe what you might encounter on your space mission. Be sure to include references of your sources. Be

*asked by Ron on May 15, 2007* -
## Science

Which of the following is a correct description of a tornado? A large swirling low pressure system that forms over that forms over the warm Atlantic ocean. A winter storm with wind speeds of at least 56 km/h and low visibility. A violently rotating column

*asked by LOVE on January 28, 2016* -
## Child Care

1. You're attempting to teach Brian, a preschooler, how to arrange a group of five blocks from largest to smallest. First, you explain what you want him to do; then you do it yourself so he can see what he's supposed to do. As Brian attempts to arrange the

*asked by Queen B on June 7, 2016* -
## Physics

An ice puck of mass m revolves on an icy surface in a circle at speed v at the end of a horizontal string of length L. The tension in the string is T Write the equation for centripetal force, and substitute the values T and L appropriately. Then with a bit

*asked by James on March 20, 2014* -
## English

It is very rude of you to behave like that. It is very wise of you to answer the question. It is very stupid of you not to solve the math problems. It is smart of you to solve the math problems. It is careless of you to hit the jar while driving. It is

*asked by John on July 9, 2009* -
## calculus help work

a force of 1250 pounds compresses a spring 5 inches from its natural length. find the work done in compressing the spring 8 additional inches. f=kd 1250=k5 k=250 then what do i do. i have to do this the calculus way, not the physics way. by using integrals

*asked by david on January 8, 2007* -
## chemistry

For the following: a)give the reaction type; b)complete and balance the reaction; c)using your answer to part b, determine how much of the other reactant is needed, and how much of each product will be formed, for the given starting amount (below); and d)

*asked by stephen on February 18, 2008* -
## Human Computer Interaction

Suppose you are working as an interface designer in Software Company where you have been tasked to design the interfaces of an e-learning application for kids of ages between 11 to 15 years. Keeping into view the design principles you have learnt in your

*asked by Learner on February 7, 2019* -
## history

How did the collapse of the Soviet Union impact Germany? A. Germany experienced violent protests that led to the execution of Ceausescu. B. A German Socialist federation emerged, leading to a civil war with Austria. C. Germany removed their capitalist

*asked by Sergio on February 16, 2019* -
## chemistry

In a constant-pressure calorimeter, 60.0 mL of 0.930 M H2SO4 was added to 60.0 mL of 0.320 M NaOH. The reaction caused the temperature of the solution to rise from 22.68 °C to 24.86 °C. If the solution has the same density and specific heat as water

*asked by Amy on May 17, 2016* -
## first steps in using a personal computer

as you boot up your computer system,nothing is displaying on the monitor.you check that the monitor is turned on and that all the power cords are plugged into a working source of electricity.what should you do next a.check that all the cables between

*asked by susue on November 13, 2013* -
## grammar check PLZ HELP ;-;

Which sentence contains an item that is either incorrectly italicized or should be italicized? A. On the ship's deck was women reading a novel called (Mystery at Sea). B. He painted the seaplane blue and named it "Kingfisher." C. In (Newsweek), I read an

*asked by Leo on May 23, 2016* -
## HUM 176

Choose the biggest breaking story of the moment. · · Compare and contrast coverage. Compare and contrast information in the stories as well as how are they presented. · Answer the following questions: o What links are included? o How does the commentary

*asked by Davina on September 11, 2011* -
## Biology

Write true or false: 1. A root hair is a small extension of an epidermal or outermost cell layer of a dicot root 2. Layers of parenchyma cells make up the cortex of a dicot root and the central pith of a monocot root. 3. Outside the endodermis is a tissue

*asked by Nandini on July 25, 2011* -
## Literacy

The trend toward two-family income has led to A. policies allowing only one family member to work for a company. B. flexible work schedules, pregnancy benefits, and elder-care programs. C. businesses paying lower wages and hiring fewer workers. D. fewer

*asked by Heather on January 21, 2012* -
## Literature

4. At the end of Chapter II of The Call of the Wild, what's meant by the phrase "The domesticated generations fell from him"? A. Buck has lost a lot of hair in his fight with Spitz. B. Buck is learning to love a human being again. C. Buck is losing his

*asked by Vmarie on November 28, 2015* -
## World History B

Which explains a consequence of the rise of global virtual markets? A) International trade has become stagnant due to open borders. B) The growth of regional economies is limited to local resources. C)Virtual shopping limits the product selection from

*asked by Jean on February 8, 2019* -
## Chemistry 314

Five mineral samples of equal mass of calcite, CaCO3 (MM 100.085) , had a total mass of 12.4 ± 0.1 g. What is the average mass of calcium in each sample? (Assume that the relative uncertainties in atomic mass are small compared the uncertainty of the

*asked by Amanda on August 30, 2012* -
## math (patterns)

Heres the problem: Winchester's local toy store sells items according to its own pricing system. A doll costs $10, a toy train costs $20, a cradle costs $20, a jumping jack costs $30, and a Tickle Me Elmo costs $50. Using the same system, how much does a

*asked by Anonymous on December 10, 2008* -
## Algebra 2

Claire has borrowed $\$5,\!000$. She plans to pay off the loan in full after two payments. She will make one payment in 3 years, then another payment in 6 years. The second payment will be exactly double the amount of the first payment. How much is the

*asked by Bob on April 4, 2017* -
## 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=86.4 N at an angle of 64 degree. The acceleration of gravity is 9.8 m/s^2. The box of books has a mass of 13 kg and the

*asked by luma on November 1, 2015* -
## probabliliyiuyiuly...

ok i'd appreciate it if someone could give me the answer to this one problem and tell me how its solved so i can do the rest on my own.... gwen has 4 blue pens, 8 black pens, 2 green pens and 3 red pens in her drawer. she takes out two pens without

*asked by Jake T. on May 16, 2007* -
## Algebra 2

Claire has borrowed $\$5,\!000$. She plans to pay off the loan in full after two payments. She will make one payment in 3 years, then another payment in 6 years. The second payment will be exactly double the amount of the first payment. How much is the

*asked by Bob on April 4, 2017* -
## algebra,math

i am clueless about this: (#1)What expression raised to the fourth power is 81x^12y^8z^16? (#2)Simplify each of the following expressions. Write your answers with positive exponents only. (x^2)^-3(x^-2) divided by (x^2)^-4 #1 answer (3x^3)(y^2)(z^4)

*asked by jasmine20 on January 21, 2007* -
## Chemistry

Five mineral samples of equal mass of calcite, CaCO3 (MM 100.085) , had a total mass of 12.4 ± 0.1 g. What is the average mass of calcium in each sample? (Assume that the relative uncertainties in atomic mass are small compared the uncertainty of the

*asked by Amanda on August 29, 2012* -
## Maths

A ball is thrown vertically upwards at 3 m s-1 from 1m above ground level (I) write down the equation for the height of the ball above the ground after t seconds (while the ball is in the air). (II) use your answer to find the time it takes the ball to

*asked by John B on November 17, 2016* -
## chemistry

could donuts be quantified in terms of instead of number explain? here's my answer but not sure of it: sure...but, since the mass of donuts varies, if you ordered say a pound of donuts at dunken donuts, you may get a partial donut or two. for that matter

*asked by tracy on October 10, 2012* -
## algebra

I have a few math questions I made them just like my actual problems so that I can go through the steps you have went through to answer my own problems...Again THESE ARE NOT THE REAL PROBLEMS JUST EXAMPLES LIKE MINE WITH DIFFERENT NUMBERS. I don't know how

*asked by Anonymous on June 12, 2013* -
## Science

Why are the days typically hotter in June than in December here in the US? D. Because the United States faces the sun in the summer and faces away from the sun in the winter E.Because the tilt of the Earth causes the sun's rays to be more concentrated in

*asked by M on February 11, 2015* -
## math

1. Which situation is not a function? a) the number of days d below freezing each month b) the total cost of an item that costs x dollars with 7% sales tax c) the number of miles driven at a constant speed of 45 miles per hour after x hours d) the total

*asked by Hayley on April 15, 2012* -
## CHEM

a gas bulb is connected to an open end manometer. the pressure in the bulb is .355 torr MORE than atmospheric pressure. If the manometer is filled with mineral oil (density .888 g/cm^3) then what wil be the difference in height between the two sides of the

*asked by Joanie on March 21, 2011* -
## Chemistry

Please help. I have tried this a few different times and have come up with the same answer. What is the pH of the solution if 0.01 of HCl is added to a buffer containing 0.013 mol of RCOOH and 0.035 mol of RCOONa (source of RCOO-)? Ka = 2.7E-5 so far i

*asked by Amanda on April 3, 2017* -
## Psychology

The impact of drug x on fertility rates in young women A.Potentially rendering young women unable to have children B.Potential birth defects if the women should become pregnant during the study C.Exposing young women to an untested drug D.There is no

*asked by Anon on October 16, 2012* -
## Physics

Two 0.33 kg blocks are attached to a 1.62m long string such that the lengths of the three string segments are equal. The ends of the string are attached to the ceiling at points separated by 1m. Each segment is 0.54m long. (If drawn, it will form a

*asked by shay on June 16, 2011* -
## Calculus (math)

A painting in an art gallery has height h and is hung so its lower edge is a distance d above the eye of an observer (as in the figure). How far from the wall should the observer stand to get the best view? (In other words, where should the observer stand

*asked by mariel on November 7, 2014* -
## Language Art!

Which event propels the action in "The Story-Teller? A. A woman is traveling with three children. B.The aunt invited Cyril to look out the window at the animals and fields they are passing. C. A man disagrees with the aunt's story, and she invited him to

*asked by Gwen on September 10, 2014* -
## Physics

Find an expression in terms of M, mu, and theta for the speed of waves on the string.Express your answer in terms of the variables M, mu, theta, and appropriate constants. The picture shown is just of a block with mass m on an inclined frictionless surface

*asked by Mel on November 27, 2012* -
## Algebra

I can not figure out how to set this problem up. I know the answer is 200 mi, 220 mi. Two different routes between two cities differ by 20 miles. Bill and Lou made the trip between the cities in exactly the same time. If one traveled the shorter route at

*asked by Hutch on October 27, 2015* -
## algebra

I have tried this problem over and over and just not getting how to do it can someone help I don't want the answer I just need showed how to do it. solve using the formula L 0.000169d^2.27/h where L is the proper length in feet of the letters on pavement,

*asked by summerwings on March 14, 2010* -
## PHY 101

An archer aims an arrow precisely horizontally over a large, flat field and lets it fly. At the same instant, the archer's watchband breaks and the watch falls to the ground. Does the watch hit the ground before, at the same times as, or after the arrow

*asked by Caroline on February 5, 2013* -
## physics

A helium balloon and its gondola, of mass M, are in the air and stationary with respect to the ground. A passenger, of mass m, then climbs out and slides down a rope with speed v, measured with respect to the balloon. With what speed (relative to Earth)

*asked by Anonymous on March 11, 2010* -
## Physica

A 21.0-kg satellite has a circular orbit with a period of 2.37 h and a radius of 8.50×106 m around a planet of unknown mass. If the magnitude of the gravitational acceleration on the surface of the planet is 7.10 m/s2, what is the radius of the planet? I

*asked by winterWX on February 17, 2007* -
## Chemistry (molarity)

What would the effect on your molarity of NaOH be if you had added 35 mL of water to dissolve the KHP (acid) instead of 25 mL? Explain. My answer so far is that adding more water shouldn't affect the molarity at all because water does not account for the

*asked by Ray on November 10, 2016* -
## Math

A town has population 225 people at year t=0. Write a formula for the population, P, in year t. a) grows by 10% per year I don't understand how to do this, and keep getting the wrong answer. Also, Find a formula for the linear function q(x) whose graph

*asked by ANON on October 17, 2012* -
## Math

Which of the following is an example of an independent event? A. Choosing one sock at random from your drawer, putting it on and then choosing another at random. B. Flipping a coin and rolling a number cube. C. Choosing students at random for basketball

*asked by Sonali on April 8, 2015* -
## arithmetic

I have a Q that im trying to solve: it says: the 1st , 2nd, and 3rd term of a geo. sequence is the same as the 1st, 7th and 9th terms of an arith. sequence.: I have to find the common ratio. So i know: a+8d = a(r^2) (1) a+6d = ar (2) but i don't know how

*asked by Gemini on October 19, 2009* -
## Math

If a stone is tossed from the top of a 330 meter building, the height of the stone as a function of time is given by h(t)=-9.8t^2-10t+330, where t is in seconds, and height is in meters.After how many seconds will the stone hit the ground? round to the

*asked by Mike on February 16, 2011* -
## Social Studies 7R - Question Homework Check

What is the Proclamation of 1763???? My Answer: The Royal Proclamation of 1763 was issued October 7, 1763, by King George III following Great Britain's acquisition of French territory in North America after the end of the French and Indian War/Seven Years'

*asked by Laruen on January 24, 2012* -
## Calculus-Math

The speed S of blood that is r centimeters from the center of an artery is given below, where C is a constant, R is the radius of the artery, and S is measured in centimeters per second. Suppose a drug is administered and the artery begins to dilate at a

*asked by Lorine on August 9, 2014* -
## phys

a spaceship travels with a speed of 0.7c as it passes by the Earth on its way to a distant star. The pilot of the spaceship measures the length of the moving ship as 50m. Determine its length as measured by a person on Earth. Answer in units of m. for this

*asked by slien on October 10, 2006* -
## science

A ball hit by a player too 2.4s to reach the short stop from home plate. If the short stop threw the ball to first base at a speed of 20m/s, a distance of 30m, how long would the runner have to make it to first base and arrive at the same time as the ball.

*asked by amy on June 9, 2012* -
## Health

At allendale psychiatric hospital, the hospital census on january 4 is 110. according to the following data, whats the hospital census for january 5? admissions - 10 discharges - 2 a & d - 1 A. 99 B. 100 C. 108 D. 118 i am thinking that the answer is C but

*asked by Anonymous on November 3, 2008* -
## phys

a spaceship travels with a speed of 0.7c as it passes by the Earth on its way to a distant star. The pilot of the spaceship measures the length of the moving ship as 50m. Determine its length as measured by a person on Earth. Answer in units of m. for this

*asked by slien on October 12, 2006* -
## Math

A swim team consists of 7 boys and 5 girls. A relay of 4 swimmers is chosen at random from the team members. What is the probability that there are 3 boys on the relay team given that there is 1 girl on the relay team. Express your answer as a fraction in

*asked by Hal on April 10, 2018* -
## Calculus

The point P(4,2) lies on the curve y=x^1/2 If Q is the point (x,x^1/2) use your calculator to find the slope of the secant line PQ for the following values of X: 1)3.5 2)3.9 3)3.99 4)3.999 5)4.5 6)4.1 7)4.01 8)4.001 i plugged these points into the intial

*asked by Judy on September 25, 2007* -
## History

Please help, last question on this quiz and I don't really wanna fail (just check my answer) What was The Exodus? A) the binding agreement between Abraham and God B) The escape of the Israelites from Egypt C) the first book of the Torah D) the start of the

*asked by Vixen - Connexus on September 21, 2018* -
## Algebra

You are pulling a raft up a river. You can make 15 miles each day. Each night, while you are asleep, however, the current pushes the raft 3 miles back downstream. If you set out on Tuesday to get to a town 85 miles upstream, on which day will you arrive?

*asked by Samay on December 4, 2017* -
## Art

An artists creates a mural depicting a local celebration of health and fitness for all community members. What would be the best subject choice for this mural? The figures of local sports heroes. The figures of local high school athletes. The figures of

*asked by LOVE on March 30, 2016* -
## Physics

A boat leaves the shore of a stream. It starts directly across from point A, as shown. The velocity of the boat is 5.2 m/s, at an angle θ = 25E as shown. The stream is 94 meters across, and is moving at 1.5 m/s. How far downstream from point A does the

*asked by Bob on August 7, 2017* -
## Physics

Two skaters, one with mass 68 kg and the other with mass 47 kg, stand on an ice rink holding a pole of length 8.8 m and negligible mass. Starting from the ends of the pole, the skaters pull themselves along the pole until they meet. How far does the 47 kg

*asked by Elaina on November 1, 2011* -
## Spanish Beg. 1 - Homework Check!

El Tiempo (the weather) 1. Hace sol - sunny 2. Hace (Mucho) calor - hot 3. Esta nublado - ??????? 4. Esta IIoviendo - raining 5. Have fresco - freezing 6. Have viento - fall (not sure......) 7. Hace buen tiempo - ????????? 8. Hace mal tiempo - ????????? I

*asked by Laruen on October 2, 2012* -
## math

Taking the speed of the radio signal as 3×108 m/s, calculate the time taken for a signal to reach a GPS receiver from a GPS satellite at a position 21 000 km distant from the receiver. Assume that the speed of the signal is unchanged over the whole path

*asked by ahmad on December 6, 2016* -
## Honors Eng. 10

Beowulf~ How are the religious beliefs of the Germanic tribes evident in Beowulf. How does Beowulf demostrate comitatus and wanderlust. Is Beowulf the ultimate representation of good, and is Grendel the ultimate representation of evil. What are Beowulf's

*asked by Amber on March 20, 2008* -
## Physics

A point mass block slides without friction on the loop-de-loop track of radius R as shown. From what height h must it be released from rest in order to make it around the loop without leaving the track? Show the equation and then plug the numbers into that

*asked by Anonymous on October 26, 2016* -
## SIERRA

a fullback having a mass of 9.0x10^1 kg is running at 4.5 m/s [E]. He is hit by a linebacker and 1.2 s later is moving backwards at 1.5 m/s [W].Find: a) the impulse imparted to the fullback B) the average force exerted on the fullback by the linebacker my

*asked by PHYSICS on January 13, 2016* -
## physics

You meet a person with prescription glasses of +1.74 dpt. What is the near point of this person? Express the result as a positive number! Hint: the near point of a healthy person is 25 cm. An object placed at this distance will form an image at the near

*asked by lauren on April 27, 2010* -
## Calculus AB

The position function of a particle in rectilinear motion is given by s(t) = 2t^3 - 21t^2 + 60t + 3 for t ≥ 0. Find the position and acceleration of the particle at the instant when the particle reverses direction. Include units in your answer. So I've

*asked by Anon on December 13, 2016* -
## Chemistry

Gallium melts just above room temperature and is liquid over a very wide temperature range (30-2204 °C), which means it would be a suitable fluid for a high-temperature barometer. Given its density, daa = 6.0 g/cm, what would be the height of the column

*asked by lala on January 17, 2018* -
## Physics

A ball of mass m 0.285 kg swings in a vertical circular path on a string L = 0.810 m long as in the figure below. a) If its speed is 5.25 m/s at the top of the circle, what is the tension in the string there? 6.89N (is the answer) b)If the string breaks

*asked by Jack on October 7, 2016* -
## its physics.. i just want the formula

A boy on a 2.2 kg skateboard initially at rest tosses a(n) 7.7 kg jug of water in the forward direction. If the jug has a speed of 2.9 m/s relative to the ground and the boy and skateboard move in the opposite direction at 0.57 m/s, find the boy’s mass.

*asked by Rah_rAh on January 17, 2013* -
## Calculus- continuity

Discuss the continuity of f(x)= sin x/x^2 - 9 That is, state where is it continuous/discontinuous and why. Here was my original answer. sinx is cont. because it's a trig function. It's cont. at -2pi, pi, -pi, and 2pi. x^2 is cont. because it's raised to a

*asked by John on June 16, 2010* -
## Reading/Abnormal psychology

Hello, I am reading the book Girl Interrupted and have to write a review on it, I know that the main person in the book had borderline personality, but I need to find how the treatment an or disorder affected the family, and I can't find the answer to that

*asked by Ashley on October 1, 2008* -
## i need help asap! please. :)

ok, can somebody explain how to do this? simplify by adding like terms. write the answer with all variables in the numerator. x^2y 4x^2p^3 2xp 5y ---- - ------- - ------- - ----- p^-3 y^-1 y^-1p^2 p^-3x^-2 PLEASE HELP ME!!!! i'm homeschooled so i cant

*asked by AlLy ElIzAbEtH on August 18, 2005* -
## Chemistry

A 1.76g sample of quinone, C6H4O2, is burned in a calorimeter whose total heat capacity is 7.854 kJ/C. The temperature of the calorimeter increases from 23.44 C to 29.14 C. What is the heat of combustion per mole of quinone? The molar mass of quinone is

*asked by Haley on May 20, 2015* -
## intermediate algebra

if a stone is tossed from the top of a 310 meter building, the height of the stone as a function of time is given by h(t)=-9.8t^2-10t+310. where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to the

*asked by ROCKY on July 28, 2011* -
## Health

In a baseball ready position preparing to field the ball, a player should be positioned so that his · legs are side by side and his weight is back on his heels for support. · legs are side by side and knees locked. · legs are about shoulder-width apart

*asked by Steve on December 31, 2013* -
## General Chemistry

Answer Check Please... A compund contains only hydrogen and nitrogen and is 12.6% hydrogen by mass. A gaseous sample of the compound has desity of 0.925g/L at 690 torr and 110 degrees Celsius. What is the molecular formula of the compound? My Empirical

*asked by Kathy on September 5, 2011* -
## Physics

A bag of blood with a density of 1050 kg/m3 is raised 1.37 m higher than the level of a patient’s arm. How much greater is the blood pressure at the patient’s arm than it would be if the bag were at the same height as the arm? Assume there is no change

*asked by Tim on February 28, 2012* -
## physics

An unclothed student is in a 27 degree Celsius room. If the skin temperature of the student is 37 degree Celsius, how much heat is lost from his body in 18 minutes, assuming that the emissivity of the skin is 0.91 and the surface area of the student is 1.7

*asked by Ashleigh on November 20, 2010* -
## Day Care

Children will develop a sense of self-direction and competence if materials are arrangeed so that children A. must apply ingenuity to find needed materials. b. must ask a caregiver for needed materials c. can easily find matereials themselves. d. will be

*asked by Cynthia on January 9, 2009* -
## Physics

A boy on a 2.2kg skateboard initially at rest tosses a 7.9kg jug of water in the forward direction. If the jug has a speed of 3.2m/s relative to the ground and the boy and skateboard move in the opposite direction at .56m/s, find the boy's mass. Answer in

*asked by Fg on April 1, 2011* -
## Algebra 2 Honors

I have a question on my math homework. The problem is: Suppose r varies jointly as s and t. If s = 20 when r = 140 and t = -5, find s when r = 7 and t = 2.5. I used r = kst. I plug in and get 140 = k(20)(5). I then multiply and get 140 = k(-100). I then

*asked by Ronald on May 19, 2015* -
## Chemistry

A student is given a 5.000g sample to analyze composed of tin metal with a small amount of a zinc impurity. The student dissolves the metal in concentrated nitric acid, allows the reaction to continue to completion, and heats the mixture to leave 6.341g of

*asked by Nicholas on September 18, 2017* -
## Physics

Problem 1 (80 points) Consider a spring of equilibrium length L, lying horizontally in a frictionless trough. The spring has cross sectional area S perpendicular to its length. The trough constrains the motion of the spring so that any wave propagating

*asked by Brandon on January 29, 2014* -
## Physics

An athlete whirls a 6.6 kg hammer tied to the end of a 1.2 m chain in a simple horizontal circle where you should ignore any vertical deviations. The hammer moves at the rate of 1.02 rev/s. What is the centripetal acceleration of the hammer? Assume his arm

*asked by Abby on January 7, 2016* -
## Communications

I am supposed to survey people because I am doing a research paper about slang. Can anyone please answer these questions for me? The more answers I get the better. I would appreciate it so much. 1)What kind of slang do you use when text messaging? 2)What

*asked by Monica on December 1, 2007* -
## Math

An airplane flys at a constant altitude of 2 miles and a constant speed of 600 miles per hour on a straight course that will take it directly over a kangaroo on the ground. How fast is the angle of elevation of the kangaroo's line of sight increasing when

*asked by John on November 12, 2015* -
## physics

How would one plug the gravitational constant into an equation? To be honest, I'm having a hard time with the idea of the gravitational constant in general, but I need to solve an equation for the circular velocity of a galaxy. I know I need to multiply

*asked by Grace on March 8, 2012* -
## calculus

A golf ball is hit off the top of a cliff that is 75 feet tall at an angle of 45° to the horizontal with an initial velocity of 80 feet per second. The quadratic equation shown below models the height, h(x), of the ball when it is x feet from the

*asked by Anonymous on May 28, 2014* -
## Math

The path of a cliff diver as he dives into a lake is given by the equation y= -(x-10)^2+75, where y meters is the divers height above the water and x meters is the horizontal distance travelled by the diver. What is the maximum hight the diver is above

*asked by Andy on November 28, 2010* -
## Calculus

An airplane flys at a constant altitude of 2 miles and a constant speed of 600 miles per hour on a straight course that will take it directly over a kangaroo on the ground. How fast is the angle of elevation of the kangaroo's line of sight increasing when

*asked by Hailey on October 7, 2014* -
## General Physics I

A 50-N force acts on a 2-kg crate that starts from rest. When the force has been acting for 2 s the rate at which it is doing work is: I found this question online so I saw the answer is 2500 Watts. What I don't understand is how to come to this

*asked by VitaX on October 13, 2010*

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