# christian

Popular questions and responses by christian-
## physics

A jet plane lands with a speed of 110 m/s and can decelerate uniformly at a maximum rate of 4.1 m/s2 as it comes to rest. Can this plane land at an airport where the runway is 0.80 km long? Answer this by calculating. Answer in units of km

*asked on September 22, 2011* -
## Chemistry

Which of the following would involve the largest production of heat per mole? a)the burning of gasoline b)the evaporation of water c)the fission of uranium d)the freezing of water e)the rusting of iron Is it C) Which of the following would involve the

*asked on July 23, 2010* -
## Physics

A 2-kg brick is moving at a speed of 6 m/s. how large a force F is needed to stop the brick in a time of 7x10^-4 s?

*asked on December 9, 2015* -
## math

1. Which angles are adjacent angles? (1 point) ∠GBM and ∠FBC ∠CBX and ∠FBC ∠XBG and ∠FBC ∠MBY and ∠FBC 2. The measure of ∠3 is 101°. Find the measure of ∠1. (1 point) 101° 106° 74° 79° 3. Is line l parallel to line m? Explain.

*asked on February 3, 2014* -
## Physics

A rocket of mass 1000 kg containing a propellant gas of 3000kg is to be launched vertically. If the fuel is consumed at a rate of 60kgs-1, calculate the least velocity of the exhaust gasses if the rocket and content will just lift off the launching pad

*asked on October 1, 2017* -
## History- WWI

What effect did the entry of the United States into WWI have on the war? Why?

*asked on November 6, 2007* -
## MATH

Please help meee How many cubes with side lengths of 1/3 does it take to fill the prism? The prism has side lengths of 5/3, 4/3, and 2. PLEASE HELPPPP

*asked on November 16, 2019* -
## Chemistry Help! (Rydberg Equation)

a) According to the Rydberg equation, the line with the shortest wavelength in the emission spectrum of atomic hydrogen is predicted to lie at a wavelength (in nm) of _____ b) According to the Rydberg equation, the longest wavelength (in nm) in the series

*asked on October 5, 2014* -
## economics

Is your consumer behavior influenced by advertising or the news? Discuss one or two examples of media that have influenced your desires or affected your consumer choices

*asked on March 26, 2013* -
## math

A cheetah traveling at 31 m/s chased its prey for 11 seconds. What distance did the cheetah travel during the chase??

*asked on February 20, 2018* -
## maths

find the product of x and y if x,3/2,6/7,y are in geometric progression

*asked on October 18, 2017* -
## Physics

A child sits on a rotating merry-go-round, 2.19 m from its center. If the speed of the child is 2.32 m/s, what is the minimum coefficient of static friction between the child and the merry-go-round that will prevent the child from slipping?

*asked on March 6, 2011* -
## English

"Reason your sympathies lean as they do" I'm trying to complete a chart. Can somebody explain what this means.

*asked on November 6, 2010* -
## Math

Use the GCF and the distributive property to write 24 +40 as a product

*asked on October 22, 2019* -
## Finance

Suppose that five years ago Cisco Systems sold a 15-year bond issue that had a $1,000 par value and a 7 percent coupon rate. Interest is paid semiannually. a. If the going interest rate has risen to 10 percent, at what price would the bonds be selling

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

Determine the rhythm and meter of each set. "Workers earn it. Spendthrifts burn it. Bankers lend it Women spend it. Forgers fake it. Taxes take it. Dying leave it. Heirs receive it. Thrifty save it. Misers crave it. Robbers seize it. Rich increase it.

*asked on October 22, 2007* -
## algebra

Which shows the expressions in the order they would appear on a number line from least to greatest? 17 over 9, square root of 6, square root of 15, square root of 30, 3 to the power of 3 3 to the power of 3, square root of 30, square root of 15, square

*asked on October 7, 2015* -
## ALGEBRA

Which expression is equivalent to 32 ⋅ 3−5? fraction 1 over 3 to the power 3 fraction 1 over 3 to the power 7 fraction 1 over 3 to the power negative 3 fraction 1 over 3 to the power negative 7

*asked on October 7, 2015* -
## Physics

A skier moves 100.0 m horizontally, and then travels another 35.0 m uphill at an angle of 35.0º above the horizontal. What is the skier's displacement from his starting point?

*asked on February 12, 2015* -
## personal finance

Which type of tax is calculated on a per-item basis?

*asked on January 28, 2015* -
## trigonometry

To the nearest degree what is the angle formed with the ground by a 32 ft ladder if it is leaning against a wall at a height of 28 ft?

*asked on May 8, 2014* -
## social studies

In 1846, the population of San Francisco, California, was only 200. By 1852, the city's population was 36,000. Which contributed the most to San Francisco's population change? (5 points) The Gold Rush The Mexican-American War The Monroe Doctrine The Trail

*asked on February 23, 2014* -
## math

The mass of a bag of sand was 2.95 kilograms when it was 2/3 full. When 1/6 of the sand was removed, the mass of the bag of sand became 2.325 kilograms. Find the mass of the empty bag in kilogrmas. Help!

*asked on October 18, 2011* -
## riddle

what is something and nothing at the same time?

*asked on August 25, 2008* -
## algebra

If an area of a square garden is 141 square feet how much fencing is needed to enclose the garden?

*asked on February 5, 2020* -
## History

Explain in your own words why you listed this particular cost as the “#1 Cost of the American Civil War.”

*asked on August 15, 2014* -
## math ugh.

at a small private collage, 9/20 of the students are female. there are 2160 female students, then how much are male?

*asked on April 4, 2013* -
## chemistry Emergency TEST

1.How many moles of sodium oxide are produced when3.9 moles of sodium combine with excess oxygen. 2. Sodium chloride decomposes into elemental sodium and elemental chlorine.How many grams of chlorine will be produced if 39.4 grams of sodium chloride

*asked on February 14, 2013* -
## math

Explain why 0.7=0.70.

*asked on November 2, 2011* -
## math

i am a number between 20 and 30. when u divide me into 6 equal groups, there is an even number in each group and 2 are left over. what number and I

*asked on October 30, 2011* -
## Engineering Statistics

"A study has shown that 20% of all college textbooks have a price of $90 or higher. It is known that the standard deviation of the prices of all college textbooks is $9.50. Suppose the prices of all college textbooks have a normal distribution. What is the

*asked on October 11, 2011* -
## Chemistry

What is the molarity of a sodium hydroxide solution if 38 mL of the solution is titrated to the end point with 14 ml of .75M sulfuric acid?

*asked on May 18, 2011* -
## Social Studies

Why did the british government go into debt?

*asked on September 30, 2008* -
## Spanish

I need help conjugating the verb Pasar into prsent tense, imperfect tense, preterite, -ing, tu affirmative command, Ud. affirmative command, Uds. affirmative command, future, and conditional tense. I also need to conjugate Tener into present tense. I am

*asked on January 9, 2008* -
## Psychology

How do traumatic brain injuries occur. I don't mean like concussions or contusions though. I am trying to write a report on how brain injuries affect personality but i am not sure how a serious brain injury occurs.

*asked on October 28, 2007* -
## Algebra 2( it's a tough one!)

Jose needs to enclose a rectangular section of his yard. The area is 35 sq. ft. and the perimeter is 27 sq. ft. Find the length and width of the section. let l be the length, and w be the width in feet. so 2l+2w=27 --->l+w=13.5 ----> w=13.5-l secondly

*asked on May 3, 2007* -
## English

How would a student justify inferring that “indigenous” means “originating in a particular region”?

*asked on June 7, 2019* -
## math

You jogged 11 kilometers at an average speed of 10 kilometers per hour. How long did you jog? I need help please

*asked on February 20, 2018* -
## physics

A box weighing 87 lb is being pulled with a rope that exerts a force of 60. lb at an angle of 15 degrees with the horizontal. if the coefficient of kinetic friction is .35, what is the kinetic friction?

*asked on August 24, 2017* -
## Algebra

Violet used 1 3/4 gallons of paint on her kitchen wall.She used 4 times as much paint for her living room and bedroom walls. How much paint did Violet use for the living bedroom walls?

*asked on January 17, 2017* -
## Math

Ivan has a 5-cent stamp, a 10-cent stamp, and a 20-cent stamp.How many different combinations of postage can he form with the stamps?

*asked on January 8, 2017* -
## Trig

Cicero has a population of 6200 people and is growing at a rate of 8% per year . Mattydale has a population of 8750 and is growing at a rate of 6% per year create and equation solve the problem and in how many years to the nearest year will Cicero have a

*asked on December 6, 2016* -
## maths

The bearing of two points Q and R from a points P are 030 degree and 130 degree respectively. If PQ is12cm and PR is 5cm, find QR

*asked on July 6, 2016* -
## Chemistry

4.13 grams of magnesium chloride were recovered after the chemical reaction between magnesium and chlorine gas occurred. If 7.10 grams of magnesium chloride was suppose to be produced, what is the percent yield of magnesium chloride?

*asked on April 22, 2016* -
## grammar

would social studies be capitalized in this sentence: I don't understand how he did the social studies problem.

*asked on April 14, 2015* -
## Physic

I need someone that can help with a formula any smart people. Law of universal gravitation f=g m 1 x m2 /r^2 needs to k ow what g is? Help?

*asked on October 17, 2014* -
## Accounting

1. Compute the estimated uncollectible accounts at the end of the year using the following rates: Current 1% 1–30 days past due 3% 31–60 days past due 9% Over 60 days past due 25% 2. As of December 31, 2013, there is a credit balance of $208.20 in

*asked on September 12, 2014* -
## Accounting

Ultra Leather Products sells leather clothing at both wholesale and retail. The company has found that there is a higher rate of uncollectible accounts from retail credit sales than from wholesale credit sales. Ultra computes its estimated loss from

*asked on September 12, 2014* -
## Physics (Help Please)

Most of us know intuitively that in a head-on collision between a large dump truck and a subcompact car, you are better off being in the truck than in the car. Why is this? Many people imagine that the collision force exerted on the car is much greater

*asked on April 8, 2014* -
## Physics (Help Please)

An astronaut of mass 84.0 kg is taking a space walk to work on the International Space Station. Because of a malfunction with the booster rockets on his spacesuit, he finds himself drifting away from the station with a constant speed of 0.570 m/s. With the

*asked on April 8, 2014* -
## Physics (Help please)

A force platform is a tool used to analyze the performance of athletes measuring the vertical force that the athlete exerts on the ground as a function of time. Starting from rest, a 60.0 kg athlete jumps down onto the platform from a height of 0.600 m.

*asked on April 8, 2014* -
## math

I am the greatest common factor of three numbers. Their sum is 36. The largest number is twice the smallest and the middle number is the mean of the other two. What are the three numbers? What number am I?

*asked on March 31, 2014* -
## Science

In a hypothetical experiment, the blood flow between two dogs is joined and one dog is stressed so that its heart rate goes up rapidly. What will happen to the heart rate of the second dog? a) It will remain calm because the heart rate is determined

*asked on February 4, 2014* -
## sociology

In what way were Karl Marx and Charles Wright Mills alike in their thinking and understanding of society?

*asked on March 27, 2013* -
## physics

a loaded cart, mass220-kg is pulled across the ground with the force of300n acting at angle 37 degree with the horizontal. how much work is done in moving the cart 20m?

*asked on March 20, 2013* -
## physics 112

what is meant by a change in temp of 1 degree celcius on the scale of a platinum resistance thermometer

*asked on January 27, 2013* -
## Physics

A 75.0kg bobsled is pushed along a horizontal surface by two athletes. After the bobsled is pushed a distance of 4.5m starting from the rest, its speed is 6.0m/s. Find the magnitude of the net force on the bobsled.

*asked on January 10, 2013* -
## physical scinsce

A cannon that is 10m long is designed to launch a 10kg ball over a castle wall. In order to do this the ball must have a speed of at least 50m/s as it exits the cannon. For every 10kg of explosives used, the force on the ball in the cannon increases by

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

a fencing company was asked to enclose three gardens with wire fences: a rectangular garden with a length of 270 meters and a width of 1123.62 meters; a square garden with a side length of 657.955 meters; and a rectangular garden with a width of 35 meters

*asked on September 20, 2012* -
## CRITICAL THINKING

How do you apply critical thinking to someone's else writing?

*asked on July 8, 2012* -
## science

how far will 350 jules raise a block weighing 7n

*asked on March 12, 2012* -
## Chemistry

When one of the following substances is dissolved in water, the only positive ions in the solution are hydrogen ions. NaOH NaH H2S Nh3

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

When one of the following substances is dissolved in water, the only positive ions in the solution are hydrogen ions. CH3OH LiOH PO4 -3 CO 3 -2

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

Flying with wind, a plane flew 800 miles in 5 hrs. Flying against the wind, the plane flew the same distance in 8 hrs. Find the still air speed and wind speed.

*asked on November 7, 2011* -
## Pre-calculus

So a computer virus has been created via Corporate e-mail. Let t=0 be the time of the first 100 infections, and at t=17 minutes the population of infected computers grows to 200. Assume the anti-virus companies arent able to identify the virus or slow its

*asked on May 11, 2011* -
## CHEM-102

Ka for hypochlorous acid,HClO is 3.0x10^-8. Calculate the pH after 10.0, 20.0, 30.0, and 40.0mL of 0.100M NaOH have been added to 40.0mL of 0.100M HOCl.

*asked on March 27, 2011* -
## math

which number is least, which number is greatest 30%, 3/4, .34

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

If a conveyor belt travels at 0.22m/s how far can it travel in 30 secs?

*asked on August 1, 2010* -
## physics

Which bear has the greater average velocity over the entire period? Which bear has the greater velocity at t = 8.0 min? Is the velocity of bear A always positive? Is the velocity of bear B ever negative?

*asked on February 10, 2010* -
## anatomy

is there a good way to memorize the bones of the body? I have to know names, location, and what they look like.

*asked on October 13, 2009* -
## CHEM

How many grams of water and iron must react to produce 543 g of iron oxide, Fe3O4? 3Fe + 4H2O---> Fe3O4 + 4H2

*asked on August 3, 2009* -
## science

im 11 years old do you know a science fair project i can do for magnetism. or a website. im in six grade

*asked on October 30, 2008* -
## AP Biology

Okay, so in the Lab Assignment that I'm currently working on in AP Biology, there is a question that says: - What results would you expect if a dialysis bag were filled with glucose and iodine and then placed into a beaker of starch and water? Its a

*asked on October 22, 2008* -
## "Brave New World"

I am writing an essay after reading the first 3 chapters of "Brave New World" about how genetic engineering produced the society. What are the motives behind genetic engineering according to Huxley? Has genetic engineering "Improved" lives of the peopel in

*asked on April 28, 2008* -
## Psychology

Create mnenomics for the terms: stores, encoding, processes, retrival, iconic memory, echoic memory, primacy effect, recency effect, semantic memory, and episodic memory.

*asked on April 4, 2008* -
## Algebra

I am going to take an Accuplacer math placement test later this week. It is to determine what math course I need to take in college. The school would like me to place in statistics.This will be my second time taking the test. The first time I placed in

*asked on April 1, 2008* -
## History

What were two intended outcomes of the Green Revolution and two unintended outcomes of the Green Revolution?

*asked on February 28, 2008* -
## Eng Literature

Who is Richard Daly of the 1960's?

*asked on February 4, 2008* -
## English- Shakespeare

Some people believe Shakespeare's plays were not really written by him. Soem people believe the real authors are anywhere from Francis Bacon to Queen Elizabeth while others support Edward de Vere. Who do you belive is the literary and historical

*asked on January 4, 2008* -
## Literarure(Ozymandias)

How is the poem "Ozymandias" by Percy Shelley a Romantic poem? What elements make it a romantic poem? I read the poem a few times and I don't know how it is classified as romantic poetry.

*asked on December 26, 2007* -
## Psychology

I am studying Jean Piaget's theory of development in my psychology class. What computer software might parents and adults use to teach young children? What aspect of the child's development would the software address?

*asked on December 18, 2007* -
## Psychology

What are the repercussions of a bruised ego? Would it be correct to say that there is not much difference in the theories of Freud and Erikson on ego? Are there any consequences to a bruised ego? I don't think there are but I am having such trouble with

*asked on December 14, 2007* -
## Psychology

What are the major criticisms of Freud's theory of personality by Alfred Adler and Carl Jung?

*asked on December 6, 2007* -
## Psychology

Who is Phineas Gage and how did his behavior change after the accident? Could anyone help me with a report about behavioral repercussions od different brain injuries? I have to pretend someone I know has a brain injury and create 5 journal entries

*asked on October 25, 2007* -
## Social Studies

Why did the French want to establish forts along the Atlantic coast of the new world?

*asked on September 27, 2007* -
## Algebra 2

Give the x and y intercepts of the graph of 3x-2y=12.

*asked on September 10, 2007* -
## Algebra 2

Completing the square method allows you to solve any quadratic equation. For each of the following determine what number completes the square. I cannot find my notes on completing the square, can someone please help with these two problems? 1. x^2+8x 2.

*asked on May 21, 2007* -
## Chemistry

Hydrogen iodine is a strong acid that is used in chemical synthesis to produce some common drugs as well as a source for iodine, I2. Data for the formation of hydrogen iodine was obtained as shown. The reaction was found to be first order with respect to

*asked on May 19, 2007* -
## Chemistry

Give the enthalpy change and entropy change values shown below calculate the free energy change for this reaction at 25 degrees C using Gibbs free energy equation. How does this value compare to the free energy change using the standard free energy of

*asked on May 16, 2007* -
## Chemistry

Hydrogen peroxide is used as a bleachin agent, a disinfectant and medicinally as a topical antibacterial agent. Hydrogen peroxide decomposes according to the reacton 2H^2O^2(l)-->2H^2O(l)+o^2(g) A. Given the standard free energy of formation values shown

*asked on May 16, 2007* -
## Chemistry

Hydrogen peroxide is used as a bleachin agent, a disinfectant and medicinally as a topical antibacterial agent. Hydrogen peroxide decomposes according to the reacton 2H^2O^2(l)-->2H^2O(l)+o^2(g) A. Given the standard free energy of formation values shown

*asked on May 15, 2007* -
## Chemistry

If 500.0 mL of hydrogen are collected over water at 20.0 C and 99.3 kPa what will the volume of the dry gas be at STP?

*asked on May 13, 2007* -
## Economics

Joe's burrito cart sits on a busy street corner. Customers line up to get Joe's hot fresh bean burritos filled with trimmings of their choice. In order to comply with regulations, Joe must keep his cart and utensils clean, advertise ingrediants on a

*asked on May 11, 2007* -
## Algebra2

The area of a square garden in square feet is 49x^2-14x+1. Find the dimensions of the garden in terms of x. x^2=49x^2-14x+1 Then solve for x. 48x^2-14x + 1=0 (8x-1)(6x-1)=0 and solve for two values of x that are possible.

*asked on May 4, 2007* -
## Physics

Why is it dangerous to roll open the top drawers of a fully loaded file cabinet that is not secure to the floor?

*asked on May 6, 2020* -
## Physics

Two girls are sitting on the same side of a see-saw. One girl is 28 kg and sitting 2.4 m away from the middle. The other girl is 35 kg and 2.6 m away from the middle. Their dad can balance them out if he sits 2.0 m away from the middle on the other side.

*asked on May 6, 2020* -
## Discrete Math

A certain connected graph has 68 vertices and 72 edges. Does it have a circuit? Explain.

*asked on April 24, 2020* -
## Math

For every integer n, prove n^2-n is even. Can someone help me?

*asked on April 24, 2020* -
## Physics

a small car has a head-on collision with a large truck. Which vehicle has the larger change in momentum?

*asked on April 13, 2020* -
## Physics

A crate of mass 10 kg is pulled up a rough incline with an initial speed of 1.5 m/s. The pulling force is 100 N, parallel to the incline; which makes an angle of 20o with the horizontal. The coefficient of friction is 0.40, and the crate is pulled 5.0 m.

*asked on April 2, 2020*