# Johnny

Popular questions and responses by Johnny-
## History

Why do you think state and local governments have a major role in providing important services? Why doesn't the federal government take on more of this role?

*asked on December 7, 2016* -
## CHemistry

Arrange the following compounds in order of decreasing ease of elution from a column of silica gel: a) 2-octanol; b) 1,3-dichlorobenzene; c) tert-butylcyclohexane; d) benzoic acid I was wondering if this was the correct order of it: Tert-butylcyclohexane >

*asked on May 2, 2010* -
## 11th grade economics

Why is it that the reward for capital is interest? I don't get how the business is rewarded interest, isn't it the banks?

*asked on February 15, 2010* -
## Organich Chemistry

What effect will the following factors have on a chromatographic separation 1) too strong an absorbent 2)collection of large elution fractions

*asked on April 26, 2010* -
## Math

Solve for the unknown quantity in each proportion

*asked on January 12, 2018* -
## History

Which accurately describe the involvement of the Catholic Church in the Crusades? A.)In the 13th century, the Church sanctioned the Children’s Crusade in which adolescents and teenagers set out from Europe to reclaim Jerusalem. B.)In 1208, the Church

*asked on June 12, 2019* -
## geometry

Given: ΔАВС, m∠ACB = 90° CD⊥AB,m∠ACD =60° BC = 6 cm. Find: АD

*asked on December 3, 2017* -
## physics

I am having great difficulty with this question. A block is placed on a frictionless ramp at a height of 12.5 m above the ground. Starting from rest, the block slides down the ramp. At the bottom of the ramp, the block slides onto a frictionless horizontal

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

In the following reaction, which substance is acting as the Brønsted-Lowry acid? NH3 + H2O NH4+ + OH

*asked on June 13, 2011* -
## physics!

howdy, just cant seem to get this question, can anyone express this question in words i can get?! thanks A sound wave of wavelength 0.8 m divides into two equal parts that recombine to interfere constructively, with the original difference between their

*asked on June 3, 2010* -
## physics

In downhill speed skiing a skier is retarded by both the air drag force on the body and the kinetic frictional force on the skis. Suppose the slope angle is è = 37.5°, the snow is dry snow with a coefficient of kinetic friction ìk = 0.0400, the mass of

*asked on December 13, 2008* -
## Algebra 2 Probability

There are 10 cards. Each card has one number between 1 and 10, so that every number from 1 to 10 appears once. In which distributions does the variable X have a binomial distribution? When a card is chosen at random with replacement six times, X is the

*asked on April 17, 2018* -
## College physics

A 0.006 00-kg bullet traveling horizontally with a speed of 1.00 x 10^3 m/s enters an 20.1-kg door, imbedding itself 10.9 cm from the side opposite the hinges as in the figure below. The 1.00-m wide door is free to swing on its frictionless hinges. At what

*asked on April 11, 2012* -
## physics

A firefighter with a weight of 722 N slides down a vertical pole with an acceleration of 3.11 m/s2, directed downward. (a) What are the magnitude and direction of the vertical force (use up as the positive direction) exerted by the pole on the firefighter?

*asked on December 11, 2008* -
## Chemistry

Explain, in terms of particles, concentration, and reaction rate, what you expect to happen when methane gas (CH4) and hydrogen sulfide gas (H2S) are sealed in a flask and reach a state of equilibrium. CH4 (g) +2 H2S (g) CS2 (g) + 4 H2 (g

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

A 1175 kg car carrying four 82 kg people travels over a rough "washboard" dirt road with corrugations 4.0 m apart which causes the car to bounce on its spring suspension. The car bounces with maximum amplitude when its speed is 24 km/h. The car now stops,

*asked on December 11, 2008* -
## Chemistry

How many grams are there in 2.3 x 10^24 atoms of silver? I need to use dimensional analysis, and I'm not sure of the conversions I'd need to solve this problem. Thank you!

*asked on October 7, 2007* -
## math

Mr. Angulo buys 5/8 pound of red grapes and 3/8 pound of green grapes. How many pounds of grapes did mr.angulo buy in all?

*asked on February 10, 2016* -
## the odyssey

what is an important theme in the odyssey,Part 2?Describe the events that illustrate this theme? You need to go to www.sparknotes.com/lit, find Odyssey (in the O section, not the T's), read through the themes section, and decide. Let us know what you

*asked on March 2, 2007* -
## Chemistry

3AgNO3 + Na3PO4 ---> Ag3PO4 + 3NaNO3 Silver nitrate and sodium phosphate are reacted in equal amounts of 200. g each. How many grams of silver phosphate are produced? 1. What is the limiting? 2. How much silver phosphate is produced? 3. How much is in

*asked on November 11, 2017* -
## Calculus and Vectors

THE VECTORS a - 5b AND a-b ARE PERPENDICULAR. IF a AND b ARE UNIT VECTORS, THEN DETERMINE a dot b

*asked on May 11, 2013* -
## Chemistry

Hey bob- Here's what I got so far: 3AgNO3 + Na3PO4 ---> Ag3PO4 + 3NaNO3 Silver nitrate and sodium phosphate are reacted in equal amounts of 200. g each. How many grams of silver phosphate are produced? 1. What is the limiting? 2. How much silver phosphate

*asked on November 11, 2017* -
## Chemistry

Mg + 2HCl ----> MgCl2 + H2 What volume of hydrogen at STP is produced from the reaction of 50.0g of Mg and the equivalent if 75g of HCl? 1. What is the limiting reagent? 2. What is the volume of hydrogen produced? 3. How much is in excess?

*asked on November 11, 2017* -
## Social studies

Why was the mayflower compact so significant?

*asked on October 16, 2016* -
## Chemistry

2. When a 1.000 g sample of the rocket fuel hydrazine, N2H4, is burned in a bomb calorimeter which contains 1200g of water, the temperature rises from 24.62C to 28.16C. If the C for the bomb is 840 J/C Calculate: q reaction for combustion of a one-gram

*asked on March 8, 2011* -
## chemistry

which of the following tetrahedral molecules is polar? please explain CH4 CF4 CH3F thanks

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

The acceleration of a bus is given by a_x(t)=At, where A= 1.21 is a constant. A)if the bus's velocity at time t_1= 1.14s is 5.03m/s, what is its velocity at time t_2= 2.04 ? B)if the bus's velocity at time t_1= 1.14s is 6.02m/s, what is its velocity at

*asked on May 28, 2010* -
## Geometry

Given: △ABC, ADEF rhombus D∈AB, E∈BC, F∈AC AB=14, BC=12, AC=10 Find: BE and EC

*asked on March 4, 2019* -
## Economics

At a management luncheon, two managers were overheard arguing about the following statement “A manager should never hire another worker if the new person causes diminishing returns”. Is this statement correct? If so, why? If not, explain why not.

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

A poster is 3 times a long as it is wide. A banner is 5 times as long as it is wide. Both the banner and the poster have perimeters of 24 inches. What are the length and width of the poster and the banner

*asked on October 10, 2013* -
## chemistry

Calculate the concentrations of all species in a 1.67 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4× 10–2 and Ka2 = 6.3× 10–8. I know how to find the Na^+ and SO3^-2 but I don't know how to find

*asked on June 17, 2012* -
## algebra

simplify the number using the imaginary unit i. √-16

*asked on October 21, 2013* -
## Math - Polynomials

off-topic: yay it's friday :D Simplify each polynomial. 1. 6g + 8k + 9g + 2k A) 3g + 10k B) -3g + 10k *** C) 17gk D) 10k - 3 2. -4x + 6x2 + 5x A) 7x^3 B) 6x^2 + 9x *** C) 6x^2 - 9x D) 6x^2 + x 3. a^2 + 5a - 3a^2 A) 5a + 2a^2 *** B) 5a - 2a^2 C) 2a^2 + 5a

*asked on May 8, 2015* -
## Physics

A crate sets on wooden horizontal surface (a wooden floor). The figure shows a top view of this looking down onto the crate (gravity would be acting into the page). Man one and man two apply forces F1 and F2, at angles of θ1 and θ2 respectively, with the

*asked on October 9, 2014* -
## Chemistry

A .288 g sample of an unknown monoprotic organic acid is dissolved in water and titrated with a .115 M sodium hydroxide solution. After the addition of 17.54 mL of base, a pH of 4.92 is recorded. The equivalence point is reached when a total of 33.83 mL of

*asked on June 8, 2008* -
## algebra 1

simplify (0.4)3

*asked on February 3, 2016* -
## math

In ΔABC,AD and BE are the angle bisectors of ∠A and ∠B and DE║ AB.If m∠ADE is with 34° smaller than m∠CAB,find the measures of the angles of ΔADE.

*asked on December 3, 2017* -
## physics

An automobile can be considered to be mounted on four identical springs as far as vertical oscillations are concerned. The springs of a certain car are adjusted so that the oscillations have a frequency of 3 Hz. (a) What is the spring constant of each

*asked on December 11, 2008* -
## Plz help with literature

The Most Dangerous Game Directions: Each question has a different point value. (134 total) As always, answer in complete sentences. Use the back of the sheet or your own paper. DO NOT CRAM ANSWERS ON THIS SIDE OF THIS SHEET! (5) 1. What do you admire or

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

let theta be an angle of quadrant IV such that sin theta = -8/9 find the exact value of sec theta and cot theta?

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

Juan charges $3.50 per hour for babysitting. Write a rule to describe the amount of money (M) earned is a function of the number of hours (h) spent baby-sitting. HELP PLEASE

*asked on November 17, 2010* -
## PHYSICS HELPPPPP

A diver descends from a salvage ship to the ocean floor at a depth of 35 m below the surface. The density of ocean water is 1.025x10^3 kg/m^3. a) Calculate the guage pressure on the diver on the ocean floor. b) Calculate the absolute pressure on the diver

*asked on January 21, 2007* -
## chemistry

What mass of carbon dioxide can be produced from 4 moles of sodium bicarbonate according to the following unbalanced reaction, NaHCO3 --> Na2CO3 + CO2 + H2O?

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

Four 50-\mu {\rm{C}} charges are brought from far apart onto a line where they're spaced at 2.0-{\rm cm} intervals. How much work does it take to assemble this charge distribution?

*asked on February 4, 2010* -
## Math

Milo's pancakes recipient makes 9 serving. It's calls for 3/4 cup milk.Milo's wants to make 6 serving. How much milk will he needs.

*asked on March 30, 2016* -
## algebra 1

graph the function for the domain of 3x -y=1;D:(-3,-1,0,4)

*asked on December 16, 2015* -
## Programming

Submit pseudocode and a flowchart for the following programming exercise: Fat Gram Calculator Design a program that asks for the number of fat grams and calories in a food item. Validate the input as follows: - Make sure the number of fat grams and

*asked on August 19, 2010* -
## Statisitcs

Scores on the verbal section of the SAT have a mean of 500 and a standard deviation of 100. If someone scored at the 90th percentile, what is their SAT score?

*asked on October 31, 2010* -
## physics

An object is hung from a spring balance attached to the ceiling of an elevator cab. The balance reads 60 N when the elevator is standing still. (a) What is the reading when the elevator is moving upward with a constant speed of 9.6 m/s? N (b) What is the

*asked on December 11, 2008* -
## Physics

Balance of vertical forces problem. Three balanced forces pull on a ring that is centered over a force table. Two forces F1 and F2 are due to weights hanging from pulleys. A frictionless pulley changes the direction of a force without altering its

*asked on April 27, 2010* -
## math

One phone plan charges a $20 monthly fee and $0.08 per minute on every phone call made. Another phone plan charges a $12 monthly fee and $0.12 per minute on each call. After how many minutes is the charge the same for both plans? A.60 minutes B.90 minutes

*asked on July 14, 2014* -
## math

In △ABC, CM is the median to AB and side BC is 12 cm long. There is a point P∈CM and a line AP intersecting BC at point Q. Find the lengths of segments CQ and BQ, if P is the midpoint of CM

*asked on December 29, 2018* -
## math

kellys dog eats 1 2/3 bones in 10 days. How many bones will he eat in 18 days?

*asked on February 8, 2015* -
## physics

A mass M is split into two parts, m and M - m, which are then separated by a certain distance. What ratio m/M maximizes the magnitude of the gravitational force between the parts?

*asked on December 6, 2008* -
## chemistry

Sixteen electrons are present in the Lewis structure of which of the following molecules? CO2 N2O SO2 more than one correct response no correct response If more than one correct response please show all correct answers thank

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

Can someone please tell me what this quote means, I am having trouble understanding. “When Andrew Johnson took upon himself the duties of his high office he swore to obey the Constitution and take care that the laws be faithfully executed. That, indeed,

*asked on November 17, 2017* -
## math

5. There are x dictionaries in a bookstore. After 1/8 of them were purchased, 10 more dictionaries were shipped in bringing the total number of dictionaries to 52. What is the value of x?

*asked on July 28, 2014* -
## Math

An only son inherited a 3/4 hectare lot. He decided to build a 40-door condominium on the lot. The floor are of the units is uniform and the total floor area of the entire condominium is 1/5 less than the area of the lot to provide for certain amenities.

*asked on July 3, 2016* -
## trig

This a problem I need help with. A vertical ple stands by a road that is inclined 10 degrees to the horizontal. When the angle of elevation of the sun is 23 degrees, the pole casts a shadow 38 ft long directly downhill along the road. How long is the pole?

*asked on November 9, 2009* -
## Physics

I need help on two problems :P 1. A spherical balloon is partially blown up and its surface area is measured. More air is added increasing the volume of the balloon. If the surface area of the balloon expands by a factor of 2.0 during this procedure, by

*asked on September 1, 2010* -
## math

building lot in a city is shaped as a 30° -60° -90° triangle. The side opposite the 30° angle measures 41 feet. a. what is the length of the side of the lot opposite the 60° angle b. what is the length of the hypotenuse of the triangular lot. c. what

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

A driver of a car going 95.0 km/h suddenly sees the lights of a barrier 39.0 m ahead. It takes the driver 0.95 s before he applies the brakes, and the average acceleration during braking is -10.0 m/s2. What is the maximum speed at which the car could be

*asked on February 15, 2011* -
## physics

In an electric shaver, the blade moves back and forth over a distance of 2.0 mm. The motion is simple harmonic, with frequency 118 Hz. (a) Find the amplitude. mm (b) Find the maximum blade speed. m/s (c) Find the magnitude of the maximum blade

*asked on December 11, 2008* -
## Geography/ Auto industry

What government imposed barriers stop or hinder the export of automobiles?

*asked on January 8, 2008* -
## Physics

On your first day at work for an appliance manufacturer, you are told to figure out what to do to the period of rotation during a washer spin cycle to triple the centripetal acceleration. You impress your boss by answering immediately. Express in terms of

*asked on June 7, 2010* -
## Physics

A neutron with a mass of 1.67x10^-27 kg traveling east with a kinetic energy of 2.00x10^-21J collides perfectly elastically with helium nucleus with a mass 6.68x10^-27 kg that is initially at rest. After the collision, the neutron has a kinetic energy

*asked on November 12, 2014* -
## Chemistry

Been stumped on this problem for a day now. 2KClO3-->2KCl+3O2 a) If 53.0g of potassium chlorate breaks down, what volume of oxygen is produced? For this one I got: 14.6L O2 b) How many grams of potassium chloride are produced from problem a? For the life

*asked on November 11, 2017* -
## physics

An airplane is travelling at a speed of 600 mph on a heading of 345 degrees. There is a wind moving at a speed of 70 mph on a heading of 20 degrees. The pilot would like to maintain his planned course. Find the speed and heading he should set in order to

*asked on November 15, 2015* -
## physics

The Sun and Earth each exert a gravitational force on the Moon. What is the ratio FSun/FEarth of these two forces? (The average Sun-Moon distance is equal to the Sun-Earth distance.)

*asked on December 6, 2008* -
## Math

Given rectangular prism A is similar to rectangular prism B and the volume of A is 125 ft3 and the volume of B is 27 ft3. What is the ratio of the surface areas for A:B? A. 3 : 5 B. 5 : 3 C. 25 : 9 D. 125. 27

*asked on April 2, 2020* -
## Math Problem Solving

Jay and Mark run a lawn mowing service. Mark's mower is twice as big as Jay's, so whenever they both mow, Mark mows twice as much as Jay in a given time period. When Jay and Mark are working together, it takes them 4 hours to cut the lawn of an estate. How

*asked on January 18, 2010* -
## physics

A neutron with a mass of 1.67x10^-27 kg traveling east with a kinetic energy of 2.00x10^-21J collides perfectly elastically with helium nucleus with a mass 6.68x10^-27 kg that is initially at rest. After the collision, the neutron has a kinetic energy

*asked on November 9, 2014* -
## math

Find the area of the following circle. r = 9 yd.

*asked on January 25, 2013* -
## Physics

What is the change in entropy of steam 320g of steam at 100°C when it is condensed to water at 100°C?

*asked on July 1, 2019* -
## MATH

The volume of a cylinder with a radius of 2 feet and a height of 4 feet is 50.2 feet^3. The volume of a cylinder with a radius of 4 feet and a height of 8 feet is 401.9 feet^3. The volume of a cylinder with a radius of 6 feet and a height of 12 feet is

*asked on December 15, 2017* -
## Finite math

Consider the following annuity scheme: regular payments of $200 are made every two months at the end of the month (in other words, there are six equally spaced payments over the year) into an account with a nominal rate of 6% compounded monthly. Note, this

*asked on November 10, 2016* -
## Chemistry

During a fractional distillation of a 25mL ethanol/H2O soln, it was found that first the temperature stayed constant at ~75 C for 3mL of soln, then it went up to 100 C for the rest of the soln. The first question is: Assuming that the unknown (ethanol) did

*asked on February 1, 2012* -
## math

A ship model is 0.5% actual size. If the model is 1 meter long, what is the actual length of the ship?

*asked on July 8, 2014* -
## chemistry

If you are given a 2.0 M solution of sucrose, describe in detail how you would make the following solutions (include specific glassware): a. 500 ml of 1.2M sucrose b. 300 ml of 0.55M sucrose

*asked on May 26, 2008* -
## stats

The probability is 0.7 that a person shopping at a certain store will spend less than $20. For groups of size 13, find the mean number who spend less than $20.

*asked on July 6, 2017* -
## physics

A wheel starts from rest and rotates with constant angular acceleration to an angular speed of 9.3 rad/s in 1.39 s. Find the magnitude of the angular acceleration on the wheel

*asked on February 8, 2015* -
## physics

An astronaut comes loose while outside the spacecraft and finds himself floating away from the spacecraft with only a big bag of tools. In desperation, the astronaut throws his bag of tools in the direction of his motion (away from the space station). The

*asked on October 9, 2014* -
## AP physics 2

You are moving into an apartment and take the elevator to the 6th floor. Suppose your weight is 790 N and that of your belongings is 1080 N. (a) Determine the work done by the elevator in lifting you and your belongings up to the 6th floor (15.2 m) at a

*asked on February 18, 2011* -
## NEED HELP ASAP PHYSICS@!!1

Tarzan (m = 78.4 kg) tries to cross a river by swinging from a vine. The vine is 10 m long. Tarzan doesn't know that the vine has a breaking strength of 1045 N. What maximum speed (in m/s) can Tarzan have at the bottom of the swing (as he just clears the

*asked on April 10, 2015* -
## phyics

A ball is thrown straight upward. At 5.00 m above its launch point, the ball’s speed is one-half its launch speed. What maximum height above its launch point does the ball attain?

*asked on October 20, 2013* -
## Economics

Engineers at a national research laboratory built a prototype automobile that could be driven 180 miles on a single gallon of unleaded gasoline. They estimated that in mass production the car would cost $40,000 per unit to build. The engineers argued that

*asked on July 6, 2009* -
## physics

The figure below shows a "conical pendulum", in which the bob (the small object at the lower end of the cord) moves in a horizontal circle at constant speed. (The cord sweeps out a cone as the bob rotates.) The bob has a mass of 0.035 kg, the string has

*asked on December 11, 2008* -
## Physics

A driver of a car going 95.0 km/h suddenly sees the lights of a barrier 39.0 m ahead. It takes the driver 0.95 s before he applies the brakes, and the average acceleration during braking is -10.0 m/s2. What is the maximum speed at which the car could be

*asked on February 15, 2011* -
## Physics

A neutron with a mass of 1.67x10^-27 kg traveling east with a kinetic energy of 2.00x10^-21J collides perfectly elastically with helium nucleus with a mass 6.68x10^-27 kg that is initially at rest. After the collision, the neutron has a kinetic energy

*asked on November 12, 2014* -
## chemistry

Which of the following statements concerning differences between ionic and molecular compounds is correct? Molecular compounds contains two elements, and ionic compounds contain three of more elements ionic compounds contain oxygen, and molecular compounds

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

What's the formula for Li2Co3+Co(NO3)3(aq) ->

*asked on June 1, 2016* -
## math

The number 1 is a perfect square (1X1=1) and a perfect cube (1X1X1=1). What is the next smallest whole number which is both a perfect square and a perfect cube?

*asked on April 4, 2011* -
## ACTIVITY-BASED COSTING

Globe Company produces two products, A1 and B2. A1 is a high-volume item totaling 20,000 units annually. B2 is a low-volume item totaling only 6,000 units per year. A1 requires one hour of direct labor for completion, while each unit of B2 requires 2

*asked on February 24, 2009* -
## physics

In 1956, Frank Lloyd Wright proposed the construction of a mile-high building in Chicago. Suppose the building had been constructed. Ignoring Earth's rotation, find the change in your weight if you were to ride an elevator from the street level, where you

*asked on December 6, 2008* -
## Physics...PLZ HELP

How much work is done to move 1.0 micro coloumb of charge from the negative terminal to the positive terminal of a 1.8V battery?

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

12.8 kg of ice at 0 C is dropped into 3.3 kg of water at C. What fraction of the ice melts? =

*asked on May 4, 2014* -
## Math

A golden rectangle has a length of 10 cm. The ratio of its length to its width is (1 + sqrt 5)/2 what is the width of the rectangle in simplified radical form? I need to know the formula to solve other problems like this.

*asked on May 22, 2020* -
## Financial Management 2-2

If an individual buys stock on margin and its price rises, the investor A. must put up additional collateral. B. must pay tax on the unrealized gain. C. must pay interest on the borrowed funds. D. may take delivery of the stock. I would think the answer is

*asked on February 21, 2009* -
## chemistry

In the explosion of a hydrogen-filled balloon, 0.30g of hydrogen reacted with 2.4g of oxygen to form how many grams of water vapor? (Water vapor is the only product.)

*asked on September 6, 2011* -
## physics

How much work is done to move 1.0 micro coloumb of charge from the negative terminal to the positive terminal of a 1.8V battery?

*asked on September 29, 2009*