# Brooke

Most popular questions and responses by Brooke-
## language arts

2. An example of literal description in the poem is (1 point)the sun brightening valleys. an audience being moved by a speech. the words of the president being relevant for a long time. shadows falling over the land.

*asked on March 19, 2015* -
## Social Studies

1. How did World War 1 change warfare? A. By introducing the atomic bomb B. By showing the effectiveness of trench warfare C. By using tanks, airplanes, and machine guns D. By demonstrating the success of the blitzkrieg 2. Which of the following was a

*asked on February 29, 2016* -
## Algebra

Sarah's mother has a miniature village modeled after her home town. The model is 10 feet long and 7 feet wide. The actual village is 7 miles long. What is the village's actual width? I just want to know if I should convert the feet to miles at one point.

*asked on August 25, 2017* -
## help me for this stupid worksheet

the question is.. why did the ghost decide to haunt city hall? urgh i don't fee like doing it so im hoping someone has the answer :] You might have gotten an answer if you'd told us the source of your question. To which story, poem, play are you referring?

*asked on January 31, 2007* -
## Math

from a window 35 meters high, the angle of depression to the top of a nearby street light is 55 degrees. The angle of depression to the base of the streetlight is 57.8. How tall is the streetlight?

*asked on March 2, 2009* -
## math

The area of a square floor on a scale drawing is 100 square centimeters and the scale of the drawing is 1 centimeter:2ft. What is the area of the actual floor? What is the ratio of the area in the drawing to the actual area?

*asked on November 16, 2015* -
## Chemistry

Please help me N2O5(g) + H2O(l) --> 2HNO3(l) delta H° = -76.2 kJ H2O(l) --> H2(g) + 1/2O2(g) delta H° = 286.0 kJ 1/2N2(g) + 3/2O2(g) + 1/2H2(g) --> HNO3(l) delta H° = -174.0 kJ Calculate delta H° for the reaction 2N2O5(g) --> 2N2(g) + 5O2(g)

*asked on October 27, 2015* -
## Algebra

Hello! Suppose that the price per unit in dollars of a cell phone production is modeled by p = $55 − 0.0125x, where x is in thousands of phones produced, and the revenue represented by thousands of dollars is R = x · p. Find the production level that

*asked on October 12, 2018* -
## English

In which of the following sentences does the use of prepositional phrases make it harder for readers to find the main point of the sentence? A. The committee voted on several of the issues under consideration. B. In what way is a political group considered

*asked on October 21, 2016* -
## social studies

10. Which of the following best describes the purpose of the Non-Intercourse Act? (1 point) to forbid the U.S. from trading with Britain and France so the countries would recognize U.S. trading rights to allow U.S. merchants to resume trade with all

*asked on October 20, 2016* -
## chemistry

Would the following procedural errors result in an incorrectly high or low calculated percent NaOCl in commercial bleach solution? A student failed to allow the volumetric pipet to drain completely when transferring the diluted bleaching solution to the

*asked on April 1, 2013* -
## Math

A science class has 3 girls and 3 boys in the seventh grade and 4 girls and 1 boy in the eighth grade. The teacher randomly selects a seventh grader and an eighth grader from the class for a competition. What is the probability that the students she

*asked on February 14, 2016* -
## math

Peter played his favorite video game for 10 hours last week. Today, Peter's parents restricted him to 5 additional hours each week for the next 8 weeks. Create the function, f(x), that models Peter's total video game time? Is it f(x)=5x + 10 or f(x)=5x + 8

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

There are 12 pieces of fruit in a bowl.7 are apples 2 are peaches.What is the probability that a randomly selected piece of fruit will not be an apple or a peach?Justify your answer.

*asked on August 19, 2015* -
## physics

Calculate the net charge on a substance consisting of a combination of 4.3 multiplied by 1013 protons and 2.5 multiplied by 1013 electrons.

*asked on April 10, 2012* -
## Math

An airline know that,on average the probability that a passenger will not show up for a flight is 6%.If an airplane is fully booked and holds 300 passengers,how many seats are expected to be empty?If the airline overbooked the flight by 10 passengers,about

*asked on August 27, 2015* -
## math: probability

A locker combination has three nonzero digits, and digits cannot be repeated. If the first two digits are even, what is the probability that the third digit is even?

*asked on March 27, 2008* -
## Chemistry

Consider the following reaction: H2+I22HI A reaction mixture at equilibrium at 175 K contains P(H2)=0.958 atm, P(I2)=0.877 atm, and P(HI)=0.020 atm. A second reaction mixture, also at 175 K, contains P(H2)=P(I2)=0.616 atm, and P(HI)=0.106 atm. What will

*asked on April 4, 2011* -
## Science

A truck whose bed is 2.5m long 1.5 m wide and 1.0 m high is delivering sand for a sand sculpture competition. About how many trips must the truck make to deliver 7 m3 if sand

*asked on August 27, 2015* -
## Psychology

With respect to the theory of cognitive dissonance, people can hold contradictory ideas in their minds. If you become aware of the dissonance between two ideas, you could pursue which of the following strategies to reduce the dissonance? B. You can modify

*asked on July 31, 2016* -
## chemistry

If you start with 1.00 g NaCl and an excess of the other reactants, how many grams of Cl2 will be produced?

*asked on April 14, 2010* -
## English

Read the following opening sentence of an introductory paragraph and answer the question that follows. Should you ever find yourself in a situation in which you suspect that someone is listening in your private conversation, you might not be as paranoid as

*asked on October 20, 2016* -
## Physics

A point on a wheel rotating at 5revs/s is located 0.20m away from the axis. What is the centripetal acceleration? a. 198m/s^2 b. .05m/s^2 c. 48m/s^2 d. 1.35m/s^2

*asked on January 20, 2015* -
## Physics

A car of mass = 1200 traveling at 60.0 enters a banked turn covered with ice. The road is banked at an angle , and there is no friction between the road and the car's tires.What is the radius of the turn if = 20.0 (assuming the car continues in uniform

*asked on April 6, 2011* -
## Math

Ms. Alison drew a box-and-whisker plot to represent her students’ scores on a midterm test. Josh received 83 on the test. Describe how his score compares with those of his classmates. a. About 23% scored higher; about 77% scored lower. b. About 50%

*asked on August 25, 2017* -
## English

Pablo insists that a conclusion should reinforce the thesis statement. Patrice says that the conclusion should follow logically from the introduction. Who is correct? A. Both Pablo and Patrice are correct. B. Neither Pablo nor Pam is correct. C. Only Pam

*asked on October 21, 2016* -
## Physics

Two objects, one of mass 3kg moving at 2m/s, the other of mass 5kg and speed of 2m/s move towards each other and collide in a head on collision. If the collision is perfectly inelastic, find the speed of the objects after the collision.

*asked on December 21, 2014* -
## Social Studies

Why did Adams increase the size of the American Navy? He wanted to prepare for all-out war on Britain He hoped it would deter more attacks by French ships He needed to use tax money to fund an increase in military spending Congress passed a law that

*asked on October 20, 2016* -
## science

which of the following is a constant, or control variable, in this experiment?

*asked on January 14, 2016* -
## Chemistry

A 25.0 mL sample of a 0.100 M solution of aqueous trimethylamine is titrated with a 0.125 M solution of HCl. What is the pH of the solution after 10.0, 20.0, and 30.0 mL of acid have been added?

*asked on April 5, 2019* -
## Math

Ms. Alison drew a box-and-whisker plot to represent her students’ scores on a midterm test. Josh received 53 on the test. Describe how his score compares with those of his classmates. a. About 25% scored higher; about 75% scored lower. b. About 50%

*asked on August 25, 2017* -
## algebra

The length of Sally's garden is 4 meters greater than 3 times the width. The perimeter of her garden is 72 meters. What are the dimensions of Sallly's garden?

*asked on January 26, 2010* -
## Physics

In an electronics factory, small cabinets slide down a 30 degree incline a distance of 16 m along the incline to the next assembly stage. The cabinets have a mass of 10 kg each. Calculate the speed each cabinet would acquire if the incline were

*asked on November 17, 2011* -
## physics

An 85 kg football player traveling 4.7 m/s is stopped in 1.0 s by a tackler. What is the original kinetic energy of the player? (I tried using 1/2 m v^2 but that doesn't seem to be right. How do I manipulate the formula?) What average power is required to

*asked on June 18, 2012* -
## 7th grade

Why do pesticides create the greatest problems for carnivores?

*asked on February 6, 2009* -
## chemistry

Mercury poisoning is a debilitating disease that is often fatal. In the human body, mercury reacts with essential enzymes, leading to irreversible inactivity of these enzymes. If the amount of mercury in a polluted lake is 215 ng of mercury / mL, what is

*asked on September 23, 2014* -
## Heat!!!

Can you please check my answers. My teacher gave me a list of 200 questions to study, but I lost the answer sheet. Can you please help me with these 23 Thanks 1. A silver bar 0.125 meter long is subjected to a temperature change from 200°C to 100°C. What

*asked on July 5, 2011* -
## Physics (12)

A car and train move together along parallel paths at 25 m/s [W]. The car then undergoes a uniform acceleration of 2.5m/s^2 [E] because of a red light and comes to rest. It remains at rest for 45s, then accelerates back to a velocity of 25m/s [W] at a rate

*asked on September 11, 2007* -
## Biology

In an experiment designed to measure the distance a golf ball is hit by clubs made of different material, a standardized variable would be: A The distance the golf ball traveled B The type of material the club is made of C The material the golf ball was

*asked on January 11, 2012* -
## English

The _______ form of a verb should be used to distinguish between actions completed in the immediate past and actions completed before a specific time. A. past perfect B. simple past C. irregular D. infinitive

*asked on October 19, 2016* -
## Math

Ronnie misses the school bus 1 out of every 30 school days. He sets up the proportion 1/30=180/x to predict how many days he will miss the bus in the 180-day school year. What is Ronnies error?

*asked on August 27, 2015* -
## Physics

A 0.0420-kg hollow racquetball with an initial speed of 18.3 m/s collides with a backboard. It rebounds with a speed of 7.4 m/s. Calculate the total impulse on the ball.

*asked on December 21, 2014* -
## physics

A plane is traveling at 300 m/s drops a bomb which hits it target 10 sec later. How high was the plane flying?

*asked on September 21, 2011* -
## Accounting

On June 3, a company borrows $200,000 cash by giving its bank a 90-day, interest-bearing note. On the statement of cash flows, where should this be reported?

*asked on April 23, 2019* -
## Physics

A .5 kg block is sliding along a tabletop with an initial velocity of .20 m/s. It slides to rest in a distance of .7m. Find the frictional force regarding it motion. The answer given is .0143 N but I do not understand how to get that.

*asked on November 17, 2011* -
## chemistry

How much heat is needed to change 4.5g of water at 10degrees celcius into steam at 150 degrees celcius?

*asked on August 21, 2012* -
## Physics

A motorcycle has a mass of 250kg. It goes around a 13.7 m radius turn at 96.5 km/hr. What is the centripetal force? a. 2.95x10^3 N b. 4.31x10^4N c. 1.31x10^4 N d. 719N

*asked on January 20, 2015* -
## Chemistry

magnesium powder reacts with steam to form magnesium hydroxide and hydrogen gas. What is the pecentage yield of 10.1g Mg reacts with an excess of water abnd 21.0g Mg 9g (OH)2 is recovered? If 24g Mg is used the percentage yield is 95% how many gramns of

*asked on January 10, 2010* -
## Calculus

Find the dimensions of the right circular cone of maximum volume having a slant height of 5 ft. See the figure.

*asked on December 12, 2016* -
## Calculus

Redo problem 8 in section 6.3 of your textbook (page 288) assuming that the parents need $105000 in 9 years for college expenses, and that the bank account earns 9.25% compounded continuously. Round your answers to the nearest cent. (You may need to

*asked on December 1, 2010* -
## Math

Suki's has 54 rock songs,92 dance songs,and 12 classical songs on her play list.If Suki's music player randomly selects a song from the playlist,what is the experimental probability that the song will not be a classical song?Explain your answer.

*asked on September 3, 2015* -
## Physics

7. A cat pushes a ball from a 7.00 m high window, giving it a horizontal velocity of 0.20 m/s. How far from the base of the building does the ball land? (Assume no air resistance and that ay= g = 9.81 m/s2.)

*asked on September 14, 2012* -
## Chrmisty

Find the pH at each of the following points in the titration of 25 ml of 3.0M HF with 0.3 M NaOH. The Ka value is 6.6x10-4. After adding 25 ml of 0.3M NaOH

*asked on January 29, 2017* -
## Physics

Three resistors are connected in series across a battery. The value of each resistance and its maximum power rating are as follows: 7.1Ω and 20.9 W, 29.5Ω and 11.4 W, and 13.6Ω and 12.5 W. (a) What is the greatest voltage that the battery can have

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

Explain how the half-life of a radioactive isotope affects the usefulness of that isotpe in dating specific types of rock?

*asked on February 3, 2010* -
## History

Historians have often labeled the period after World War II the “Age of Containment” or a period of “The Great Fear.” Why do you think the end of the war ushered in such a fearful age? What were some of the internal and external factors?

*asked on May 28, 2009* -
## chemistry

Would the following procedural errors result in an incorrectly high or low calculated percent NaOCl in commercial bleach solution? A student failed to allow the volumetric pipet to drain completely when transferring the diluted bleaching solution to the

*asked on April 2, 2013* -
## Accounting

Holly County needs a new county government building that would cost $24 million. The politicians feel that voters will not approve a municipal bond issue to fund the building since it would increase taxes. They opt to have a state bank issue $24 million of

*asked on January 31, 2013* -
## English

Which of the following is a true statement about an MLA Works Cited page? A. The Works Cited page requires no special formatting. B. The Works Cited page should immediately follow the conclusion and be on the same page. C. The Works Cited page should

*asked on November 30, 2016* -
## Writing Skills

Which of the following statements about connecting paragraphs is correct? A. A good connection between two paragraphs is an implied transition. B. Two paragraphs may be joined by an action verb. C. You can use a pointing word that that refers to a word in

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

Which of the following scale factors would produce an expansion under a dilation of the original image? A. 2/3 B. -1/2 C. 3/2 D. -3/4

*asked on May 2, 2008* -
## Chemistry

A 0.25 g sample of lime (CaO) is dissolved in enough water to make 1487 mL of solution. Calculate the pH of the solution

*asked on February 28, 2012* -
## Physics

A 15 kg model airplane flies horizontally at point A that is 20 m about point B. It has a speed of 19.993 m/s at point A. It then flies horizontally at point B. If the loss of potential energy is reflected as an increase in kinetic energy, what is the

*asked on November 17, 2011* -
## Calculus

assuming that you wish to have $19000 in 7 years and that the account earns 6% compounded continuously. Round your answer to the nearest cent. Answer:

*asked on December 1, 2010* -
## Chemistry

What is the mass in grams of each of the following: a) 4.50 x 10^12 atoms Cl b) 8.42 x 10^18 atoms of Br

*asked on October 2, 2007* -
## algebra

Tickets to a sporting event cost $6 for children and $8 for adults. The total revenue from the tickets sold was $2340. There were 320 total tickets sold. How many children’s tickets were sold?

*asked on October 12, 2017* -
## physics

A dad pushes tangentially on a small hand-driven merry-go-round and is able to accelerate it from rest to a frequency of 16 rpm in 11.5 s. Assume the merry-go-round is a uniform disk of radius 3.0 m and has a mass of 790 kg, and two children (each with a

*asked on June 21, 2012* -
## Biology

Name three characteristics of mitochondria and chloroplasts that support the endosymbiotic hypothesis of eukaryotic evolution?

*asked on February 3, 2010* -
## Math

A cookie recipe calls for 5/8 cups of flour and 5/6 cup of sugar. What is the least common denominator of the fractions?

*asked on April 25, 2019* -
## chemistry

How to calculate the molarity of commercial bleach

*asked on April 1, 2013* -
## chem

calculate the solubility of barium sulfate (Ksp=1.1x10^-10) in a) water b) a 0.10 M barium chloride solution help is GREATLY appreciated

*asked on March 18, 2012* -
## US GOV

Which of the following statements concerning the Twenty-fifth Amendment is incorrect? a. It allows the vice president to serve as acting president in the case of presidential disability. b. It allows the vice president alone to declare the president

*asked on November 18, 2011* -
## Calculus

Company QRS generated a net profit between 1992 and 1997 at a rate approximated by 20 t + 264.5 million dollars per year, where t is the time in years since 1992. Find the value, in 1992, of QRS's net profit over the 5-year period from 1992 to 1997. Assume

*asked on December 1, 2010* -
## Math

HELP PLEASE Which statement is false? A. Every integer is a real number*** B. The number zero is a rational number C. Every irrational number is a real number D. Every real number is a rational number Am I correct?

*asked on September 27, 2019* -
## Physics

A child swings from a rope of length L. If she starts her swing with the rope horizontal what is her acceleration at the bottom of the swing? a. 2gL^2 b. g/2 c. g d. 2g/l e. 2g

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

Oops I left a part of the question out: 2. Mercury poisoning is a debilitating disease that is often fatal. In the human body, mercury reacts with essential enzymes, leading to irreversible inactivity of these enzymes. If the amount of mercury in a

*asked on September 23, 2014* -
## physics

An alpha particle (charge = +2.0e) is sent at high speed toward a gold nucleus (charge = +79e). What is the electric force acting on the alpha particle when the alpha particle is 1.7 multiplied by 10-14 m from the gold nucleus? N

*asked on April 10, 2012* -
## college board

what does the SQ3R method stand for?Example: S- Q- R- R- R-

*asked on September 23, 2008* -
## physics 2

How many electrons must be removed from each of two 5.40kg copper spheres to make the electrical force of repulsion between them egual in magnitude to the gravatational attraction between them?

*asked on February 6, 2009* -
## Chemistry

Hi i am having trouble with this question: Name five household products that are not reactive, and for each product, describe the properties that make it ueful. Thanks in advance.

*asked on March 16, 2008* -
## Physics

A penny is placed on a disk that is rotating at 2 revolutions per second. The coefficient of friction between the penny and the disk is 0.4. What is the maximum radius at which the penny will stay on the disk? a. 2.5cm b. 100cm c. 1cm d. 10cm e. 25cm

*asked on January 15, 2015* -
## 4th grade

A class can make equal teams of 5 for basketball, or equal teams of 6 for volleyball. Each student in the class was on a team. How many students might be in the class? Please explain.

*asked on January 14, 2009* -
## algebra

The sum of two numbers is 43. The smaller number is 15 less than the larger number. What are the numbers

*asked on November 28, 2016* -
## PLZ HELP MATH

from a window 35 meters high, the angle of depression to the top of a nearby street light is 55 degrees. The angle of depression to the base of the streetlight is 57.8. How tall is the streetlight?

*asked on March 2, 2009* -
## Physics

Two wires are identical, except that one is aluminum and one is copper. The aluminum wire has a resistance of 0.527Ω. What is the resistance of the copper wire? Take the resistivity of copper to be 1.72 x 10-8 Ω·m, and that of aluminum to be 2.82 x 10-8

*asked on February 26, 2017* -
## Math

Suki has 54 rock songs 92 dance songs and 12 classical songs on her playlist . If suki's music player randomly selects a song from the playlist, what is the experimental probability that the song will not be classical

*asked on September 3, 2015* -
## Math

The profit (in millions of dollars) from the sale of x million units of Blue Glue is given by p= .7x-25.5. The cost is given by c= .9x +25.5 (a) Find the revenue equation. (b) What is the revenue from selling 10 million units? (c)What is the break-even

*asked on April 9, 2013* -
## Algebra

Tickets to a movie cost $7.25 for adults and $5.50 for students. A group of friends purchased 8 tickets for $52.75. How many adult tickets and student tickets were purchased?

*asked on January 26, 2010* -
## physical science

A 50.0 kg object is lifted using 4900.0 J. How high is it lifted?

*asked on May 6, 2008* -
## Physics

Density is the ratio of mass to volume. Mercury has a density of 1.36 x 10^4 kg/m^3. What is the density of mercury in units of g/cm?

*asked on August 18, 2018* -
## Math

A printing company makes plastic banners 15 ft long by 6 feet wide. How many square meters is the banner? Use 1 foot=0.305meters

*asked on April 27, 2015* -
## physics

At the point of fission, a nucleus of 235U that has 92 protons is divided into two smaller spheres, each of which has 46 protons and a radius of 5.08 multiplied by 10-15 m. What is the magnitude of the repulsive force pushing these two spheres apart?

*asked on April 10, 2012* -
## Physics

Jane, looking for Tarzan, is running at top speed (6.2 m/s) and grabs a vine hanging vertically from a tall tree in the jungle. How high can she swing upward?

*asked on October 24, 2011* -
## physics

A 65.5 kg high jumper leaves the ground with a vertical velocity of 8.1 m/s. How high can he jump? The acceleration of gravity is 9.8 m/s2 .

*asked on December 1, 2015* -
## Chemistry

How would you calculate the number of atoms for 1.004 mol bismuth

*asked on September 21, 2009* -
## precalc

A projectile is launched from a platform 20 feet high with an initial velocity of 48 feet per second, The height h of the projectile at t seconds after launch is given by h = –16t^2 + 48t + 20 feet. (a) How many seconds after launch does the projectile

*asked on July 12, 2015* -
## Chemistry

Using Werner Hesienbergs uncertainty principle delta x >h/ (4pie*m*delta v) when mass of electron is 9.11x10^-31kg what is the uncertainty in the position of an electron moving at 9x10^6 m/s with an uncertainty of delta v= 0.01x10^6m/s

*asked on January 14, 2013* -
## physics

Assume the driver has a mass of 70.6 kg . What horizontal force does the seat exert on the driver? Answer in units of N

*asked on November 13, 2011* -
## physics

A man is pulling on a rope with a force of 65 N directed at an angle of 26◦ to the horizontal. What is the x-component of this force? Answer in units of N.

*asked on September 13, 2010* -
## history

12. What was the Cold War? What exactly made it "Cold"? Why was it never "hot"? (Answer every part of the question) (5 points) *

*asked on April 4, 2019*