# Ali

Popular questions and responses by Ali-
## Science

A drop of oil of volume 10^10m spread out on water to make a circular film of radius 10^1m. What is the thickness of the film

*asked on October 26, 2017* -
## Calculus Please help!

If 7000 dollars is invested in a bank account at an interest rate of 7 per cent per year. A) Find the amount in the bank after 6 years if interest is compounded annually? B) Find the amount in the bank after 6 years if interest is compounded quaterly? C)

*asked on February 21, 2014* -
## management

Cai is preparing for a cross-cultural negotiation with Yosuke. In preparing for this negotiation, he wants to make sure that he understands Yosuke’s “deep culture.” This means understanding the other side’s (select one):

*asked on May 20, 2020* -
## Fact file

give one place where vascular bundles are close together

*asked on April 10, 2018* -
## Math

A rectangular prism is completely packed with 180 cubes of edge length fraction 1 over 3 inch, without any gap or overlap. Which of the following describes the volume of this rectangular prism? 19 unit cubes and 9 smaller cubes of volume fraction 1 over 27

*asked on January 20, 2016* -
## Investment management

In this assignment, you will apply the concepts of company valuation that you have just learned to determine whether company XYZ is overvalued. We are currently at the end of year "t". You performed a thorough financial analysis of XYZ and forecast the

*asked on June 10, 2020* -
## chemistry

Determine the quantity (g) of pure CaCl2 in 7.5 g of CaCl2*9H2O

*asked on November 16, 2015* -
## Fact file

give one place where vascular bundles are spread out

*asked on April 10, 2018* -
## Calculus [Implicit Differentiation]

If √x+√y=10 and y(16)=36, find y'(16) by implicit differentiation. If somebody could please help me by explaining how to solve this problem ! Thank you (:

*asked on November 17, 2012* -
## Physics

A particle has a charge of +1.5 µC and moves from point A to point B, a distance of 0.18 m. The particle experiences a constant electric force, and its motion is along the line of action of the force. The difference between the particle's electric

*asked on January 12, 2011* -
## math

In complete sentences, explain why 1/(x^2+2x+9)

*asked on August 11, 2020* -
## Science

why some people can keep fit by just walking yet others ne lots of running around

*asked on April 27, 2018* -
## Math

1. Sally was able to eat 5/8 of her lunch. John ate 75% of his lunch. Who are more of their lunch? a. John b. Sally c. They both ate the same number amount d. The amount cannot be calculated

*asked on October 4, 2017* -
## Scince

suggest and explain what happens to the movement of sugar in winter when a tree has no leaves

*asked on April 1, 2018* -
## Math

The Mall: My sister likes to go shopping. Yesterday she borrowed a wad of money from Mom and went to the mall. She began her excursion by spending $18 on a new CD. Then she spent half her remaining money on a new dress. Then she spent $11 on lunch. Then

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

Two ships leave the same port at noon. Ship A sails north at 22 mph, and ship B sails east at 12 mph. How fast is the distance between them changing at 1 p.m.? (Round your answer to one decimal place.)

*asked on October 10, 2012* -
## pyhsics

A cannonball is shot (from ground level) with an initial horizontal velocity of 36.0 m/s and an initial vertical velocity of 21.0 m/s. 1) What is the initial speed of the cannonball? 2) What is the initial angle θ of the cannonball with respect to the

*asked on September 8, 2012* -
## physics

a block of mass 0.1kg is attached to spring and placed on a horizontal frictionless table .the spring is stretched 20cm when a force of 5n is applied.calculate the spring constant

*asked on April 22, 2017* -
## math

Solve this problem plz... A shopkeeper buys some eggs at 15 cent each.6 of them are broken.while rest are sold at 20 cent each if he makes a profit of $4.8.find eggs he bought?

*asked on January 20, 2016* -
## Geometry

When constructing inscribed polygons and parallel lines, how are the steps different? A. A protractor is used to take measurements B. Four right angles are created. C. A compass is used to copy an angle. D. There are no similarities. I think it's C? What

*asked on October 13, 2017* -
## chemistry

how many moles of fe are present in 30g of rust?

*asked on August 21, 2016* -
## math

find the sum of the first 8th term of the Geometric progression, 1,3,9,27

*asked on November 5, 2010* -
## Calculus

The base of a solid in the first quadrant of the xy plane is a right triangle bounded by the coordinate axes and the line x + y = 2. Cross sections of the solid perpendicular to the base are squares. What is the volume, in cubic units, of the solid?

*asked on July 28, 2015* -
## chemistry

The Measured voltage of the cell Pt H2 (1.0atm) H+ // Ag+ (1.0M) Ag ia 1.02 V at 25degrees. Gven E cell is 0.80V, calculate the pH of the solution.

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

sec( pi/7)-sec(2pi/7)+sec(3pi/7)

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

The perimeter of a rectangular pool is 84 feet. The width of the pool is half the length. What are the measurements of the rectangular pool?

*asked on March 20, 2012* -
## Math

The mean monthly wages of 7experienced and 5 inexperienced workers is 1000 .If the mean monthly wage of the 5 inexperiencedworkers is 846 find the mean monthly wage of 7experienced workers

*asked on November 27, 2018* -
## phy

a landscape architect is planning an artificial waterfall in a city park. water flowing at 1.70 m/s will leave the end of a horizontal channel at the top of a vertical wall h =2.35 m high . and from there it will fall into a pool ( Fig . P4.18) (a) will

*asked on May 31, 2017* -
## physics

a 4.5kw electric motor is 90% efficient.how much energy it use in 20 seconds.

*asked on December 1, 2013* -
## physics

a hockey puck rebounds from a board. the puck is in contact with the board for 2.5 ms. dertermine the acceleration of the puck over the time interval. V(i) = 26 m/s...at angle of 22 degrees. V(f) = 21 m/s...at angle of 22 degrees. a=?

*asked on January 27, 2011* -
## Mathematics

The points A,B,C and D are consecutive vertices of a regular polygons with 20 sides.Calculate angles (a) ABC (b) ACD (c) ABD

*asked on March 2, 2019* -
## Biology

Which of the following are three common characteristics of echinoderms? A tube feet, circulatory system, body symmetry B marine-dwellers, endoskeletons, water-vascular system C bilateral symmetry, ossicles, respiratory system D mouths, protosomes, body

*asked on June 14, 2012* -
## Chemistry

In a eudiometer, 20 ml of a gaseous hydrocarbon A is mixed with 150 ml of oxygen gas. The combustion of A is initiated by an electric spark. After cooling and condensing the vapour, the volume of the gaseous mixture is 110 ml, of which 80 ml causes

*asked on April 28, 2019* -
## CHEMISTRY HELP !!!!

a.) which of the following reactions should have the larger emf under standard conditions & why? CuSO4 (aq) + Pb (s) goes to PbSO4 (s) + Cu (s); Cu(NO3)2 (aq) + Pb(s) goes to Pb(NO3)2(aq) + Cu(s) b.) Calculate delta G for the reaction.

*asked on April 19, 2014* -
## Investment

On April 16, 2012, the President of Argentina introduced a bill for the re-nationalization of the country's largest energy company, YPF. In more concrete terms, Argentina expropriated the shares that a foreign investor (Repsol) held in the company. Into

*asked on June 22, 2020* -
## Physiology

When the pH of the extracellular fluid declines: 1 the kidneys excrete more sodium ions. 2 the kidneys excrete more bicarbonate ions. 3 the kidneys reabsorb more potassium ions. 4 the kidneys reabsorb less water. 5 the pH of the urine increases.

*asked on March 15, 2019* -
## Math-Urgent help please.

Two cards are selected, without replacing the first card, from a standard deck. Find the probability of selecting an ace (A), and then selecting a 4 (B): (choose 2) 0.603% 0.592 0.592% They are dependent events. 0.00592

*asked on October 13, 2014* -
## Law and ethics in allied health

ive been trying to figure this question out for 20 minutes.. if you could help me that would be great. - Dennis, a new medical assistant at Dr. Hernandez's office, notices that Beth has been waiting over an hour to get an allergy shot. Dennis has never

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

Three spheres, each with a negative chrge of 4.0x10^6C, are fixed at the vertices of an equilateral triangle whose sides are 0.20 m long. Calculate the magnitude and direction of the net electric force on each spehere. i used this:

*asked on January 1, 2011* -
## College physics

A student has built a 20-cm-long pinhole camera for a science fair project. She wants to photograph the Washington Monument, which is 167 m (550 ft) tall, and to have the image on the film be 5.0 cm high.

*asked on July 30, 2010* -
## trig

Verify the identity sin 3x cos 3x = 1/2 sin 6x can you show step by step please

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

How many moles of HNO3 are required to make 250mL of a 2.4M solution? How many grams of KOH are required to make 125mL of a .50M solution?

*asked on March 4, 2009* -
## math

Find the approximate area of the shaded region below, consisting of a right triangle with a circle cut out of it. Use 3.14 as an approximation for

*asked on December 5, 2019* -
## math

translate sentence to inequality The sum of a number times 9 and 30 is at least 17

*asked on May 5, 2019* -
## chemistry

Why reversible reaction never complete

*asked on June 21, 2016* -
## Calculus

The region in the first quadrant bounded by the x-axis, the line x = ln(π), and the curve y = sin(ex) is rotated about the x-axis. What is the volume of the generated solid? Got 2.8 and .79 very confused

*asked on August 4, 2015* -
## Math

120 people are given a survey about which television shows they watch. ABC=55 NBC=30 CBS=40 ABC and CBS=10 ABC and NBC=12 NBC and CBS and ABC=5 It wants you to solve for the remaining regions of the circle (mainly what NBC+CBS equal). I know you have to

*asked on April 10, 2013* -
## trig

A space shuttle 200 miles above the earth is orbiting the. Earth once every 6 hours. how far does the shuttle travel in one hour? Note the radius of earth about 4000 miles.

*asked on September 17, 2011* -
## university

Compare and contrast packet and circuit switching in 250 to 300 words. Which is more commonly used? What are the advantages and disadvantages of each?

*asked on May 9, 2011* -
## stats

A financial institution wishes to estimate the mean balances owed by its credit card customers. The population standard deviation is estimated to be $300. If a 98 percent confidence interval is used and an interval of ±$75 is desired, how many cardholders

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

Describe how you would obtain pure crystals of Sodium chloride from a muxture of solid sodium chloride and solid zinc carbonate Step1 Step 2 Step 3 1. Add HCl to react with the carbonate. The products are zinc chloride, CO2, and water. The CO2 leaves as a

*asked on April 24, 2007* -
## Math

TO BE HONEST I DON'T REALLY KNOW SO I WAS WONDERING IF YOU GUYS HELP ME FIND THE ANSWER THANKYOU Ursula has fraction 1 over 2 cup of butter. She uses fraction 1 over 4 cup of butter to make a batch of brownies. Part A: How many batches of brownies can

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

A lighted candle is placed 38 cm in front of a diverging lens. The light passes through the diverging lens and on to a converging lens of focal length 10 cm that is 5 cm from the diverging lens. The final image is real, inverted, and 19 cm beyond the

*asked on August 3, 2015* -
## Algebra

Bob needs to mix 2 cups of orange juice concentrate with 3.5 cups of water to make orange juice. Bob has 6 cups of concentrate. How much orange juice can he make? Please help answer thx

*asked on October 28, 2014* -
## Calculus Help

A high-speed bullet train accelerates and decelerates at the rate of 4 ft/s2. Its maximum cruising speed is 90 mi/h. (Round your answers to three decimal places.) (a) What is the maximum distance the train can travel if it accelerates from rest until it

*asked on April 19, 2014* -
## derivative (fg)'

This problem tests calculating new functions from old ones: From the table below calculate the quantities asked for (fg)'(–2) x 1 –17 0 –2 f(x) 3 –4335 0 0 g(x) 1 –10097 1 –17 f(x) 7 799 0 4 g(x) 3 1767 –1 27 (fg)'(–2) = ??? ty

*asked on February 22, 2014* -
## Algerbra

A boat's crew rowed 10.5 miles downstream, with the current, in 1.5 hours. The return trip upstream, against the current, covered the same distance, but took 3.5 hours. Find the crew's rowing rate in still water, and the rate of the current.

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

apply write an expression for the quantity 506,000 cm in which it is clear that all the zeros are significant.

*asked on October 4, 2009* -
## Math

Four pipes can fill a tank in 70 minutes.how long will it takes to fill the tank if 7 pipes are used.

*asked on January 22, 2020* -
## Grammar

Select the word or phrase that makes the sentence grammatically correct. 1. A tuberculin skin test should be read within 24 hrs. ____ administration. a. Of b. Since c. As d. From 2. The student ______ for the final exam. a. Didn’t studied b. Was studying

*asked on October 4, 2017* -
## Homework 2

Harmony are agreeable features of classical music. are not supposed to use in here because harmony is singular. right or wrong??

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

He had already finished studying at an university when he was called to join the army. had/already/an/was called/when/ I think already is wrong here?? tnxxx

*asked on September 14, 2016* -
## financial mathematics

bernard burrows rm8889 at 15%per annum simple interest. he agrees to settle the loan by paying x ringgit, 2x ringgit and 3x ringgit in two months, five months and nine months respectively.find the value of x using the present as the focal date

*asked on June 10, 2016* -
## civics

which of the following is true about most state constitutions A. Delegated powers are thoroughly described in most state constitutions** B. most state constitutions are longer than the U.S. constitutions C. the constitution describes the federal government

*asked on January 13, 2016* -
## 4th grade math

There are 112 seats in the school auditorium. There are 7 seats in each row. There are 70 people seated, filling up full rows of seats. How many rows are empty? We added and got 189 then divided by 3. But it doesn't look correct. How do we show the work?

*asked on February 1, 2015* -
## home work

Problem 4: A block of mass m slides down a frictionless incline as: The block is released from height h above the bottom of the circular loop. (a) Find the force exerted on the block by the inclined track at point A. (Hint: Consider the Newton’s 2nd law

*asked on January 22, 2015* -
## Math

Suppose you spin a spinner that is equally likely to land on any one of the numbers from 1 to 8. Which event has the same probability as P(not 2 or 3)?

*asked on May 21, 2014* -
## Physics Please help!

If it requires 5.5J of work to stretch a particular spring by 2.3cm from its equilibrium length, how much more work will be required to stretch it an additional 4.5cm ? Express your answer using two significant figures. W=_____ J?

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

You are on an airplane traveling 30° south of due west at 130.0 m/s with respect to the air. The air is moving with a speed 31.0 m/s with respect to the ground due north. 1) What is the speed of the plane with respect to the ground? 2) What is the heading

*asked on September 10, 2012* -
## MATH - area question

I need help on where to begin with this problem. You are installing a new deck around your pool. The pool is rectangular with the dimensions 8m by 4m. The deck will surround the pool and will have a width by 2m. What is the area of the deck? I know that

*asked on February 27, 2012* -
## finance

Harvard Group Case Analysis Foreign Exchange Hedging Strategies at General Motors: Transactional and Translational Exposures

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

what is the solubility of Pb(NO3)2, PbCl2, PbCrO4, and PbS from highest to lowest

*asked on November 1, 2010* -
## marketing opportunity cost

Maurice receives $100 as a birthday gift. In deciding how to spend the money, he narrows his options down to four choices: Option A, Option B, Option C, and Option D. Each option costs $100. Finally he decides on Option B. The opportunity cost of this

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

How many milliliters of 0.05 N HC1 are required to neutralize exactly 8.0 g of NaOH???

*asked on July 13, 2020* -
## mathematics

Peter has two fair tetrahedral (four sided) dice. The faces on each die are labeled l, 2, 3 and 4. One die is red and another is blue. Peter throws each die once. The random variable X is the sum of the numbers on which the dice land. a) Construct a

*asked on May 3, 2020* -
## Mathematics

A fruit recipe requires 2 apples and 3 Mangoes.A baker has 37 Mangoes.What is the smallest number of apples he will need to bake as many fruit tarts as possible?

*asked on May 3, 2019* -
## Social studies

What is the difference between a direct and a representative democracy(or indirect)

*asked on May 18, 2018* -
## English

I read a story and now it asking me to identify the theme. I don’t know how to identify a theme. Can you give me some tips and make me understand what that means. How am I suppose to find those clues in a story that tell me this is a theme or some clues.

*asked on March 31, 2018* -
## math

John and Bryan share Rs 1500.If John gets twice as much as Bryan,how much money does Bryan have?

*asked on November 15, 2016* -
## Chemistry

Solid AgNo3 is added slowly to solution of 0.001M Cl,Br,and I a) at what concentration of Ag will AgI precipitating? at what concentration of Ag will AgCl precipitating? at what concentration of Ag will AgBr precipitating? b) calculate the percent % of I

*asked on October 18, 2016* -
## Math

Mr. Kole has 30 students in his class he has twice as many girls as boys what is the ratio of boys to the class

*asked on October 2, 2016* -
## Chemistry

Why do warm temperatures speed up the fermentation of milk?

*asked on February 22, 2016* -
## maths

a survey of 250 people showed that 220people favored a candidate for re-election what percent of the people surveyed favoured the candidate

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

Solve this problem plz... A rectangle has an area of 288 cm square.if the width is decreased by 1cm and length is increased by 1 cm the area would decreasedby 3 cm square.fin the original dimension of the rectangle.

*asked on January 20, 2016* -
## college chemistry

From your mass of MgNH4PO4.6H2O collected, calculate your value a) for the mass of "P2O5" in the initial mass of fertilizer analyzed b) the % "P2O5" in the fertilizer. Compare this with the manufacturer's specification. Just want to know how i would go

*asked on September 23, 2015* -
## 4th grade math fraction

Ashley bought 4 packages of juice boxes. There are 6 juice boxes in each package. She gave 2 juice boxes to each of 3 friends. How many juice boxes does Ashley have left?

*asked on February 2, 2015* -
## Algebra

A collector has 120 movie posters and 100 band posters. She wants to sell 24 movie posters but still have her poster collection maintain the same ratio of 120:100. If she sells 24 movie posters, how many band posters should she sell? Explain thx

*asked on October 28, 2014* -
## Calculus

inding vertex and focus of parabola y^2 +4y +8x - 12 =0

*asked on May 27, 2014* -
## chemistry help~~~~ Please!!!

how should the ph of a 0.1 m solution of nac2h3o2 compared with that of a 0.1 m solution of kc2h3o2?

*asked on April 10, 2014* -
## Calculus Please help!

Use implicit differentiation to find the slope of the tangent line to the curve at the point (1,3) -4x^2+4xy-2y^3=-46 m=____? ty guys so much!

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

a large nuclear power plant generates electric energy at the rate of 1000 MW. how many joules of electricity does the plant generate in one day? what is the mass of this much energy?

*asked on October 25, 2013* -
## math

Tony is 1/2 of a mile ahead of Laura on a jogging path. If Tony is running at 5 miles per hour, and Laura is running at 7 miles per hour, how long will it take Laura to catch up with Tony?

*asked on September 12, 2013* -
## Math

Calculate the length of the path over the given interval: c(t) = (3t^2, 4t^3), 2

*asked on August 7, 2013* -
## chem com

3PbO + 2NH3 ---> 3Pb + N2 + 3H2O Based on the above balanced equation, If given 12.6 moles of NH3, how many moles of lead (Pb) will be produced

*asked on April 17, 2013* -
## muniz

how much heat must be removed from 20g of water at 130 c to make 20 g water at -22 c

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

sphere A has a mass of 4.2*10^-2 kg and is tethered to a wall by a thin thread. Sphere a has an excess of 1.2 *10^12 electrons. Sphere B has a deficit of 3.5*10^12 electrons and is o.23 m from sphere A a) determine the angle between the thread and the wall

*asked on January 12, 2013* -
## Calculus: Help !

The demand function for a certain brand of blank digital camcorder tapes is given by p=−0.02x^2−0.1x+24 where p is the wholesale unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. Determine the consumers'

*asked on November 30, 2012* -
## Physiology

if someone is infected with the common cold virus, which type of nonspecific immune response would attempt to deal with the invader? A) T cells B) b cells C) antibodies D) none of these

*asked on June 6, 2012* -
## science

Calculate the molarity of each solution. a) 1.0 mol KCl in 750 mL of solution b) 0.50 mol MgCl2 in 1.5 L of solution

*asked on March 24, 2011* -
## statistics

an experiment consists of 4 tosses of a coin.denoting the outcomes HHTH,THTT,..and assuming that all 16 outcomes are equally likely, find the probability distribution for the total number of heads.

*asked on November 21, 2010*