# Andre

Newest questions and responses by Andre-
## physics

A force of 40N is applied at the end of a wire 4m long and produces an extension of 0.24mm. If the diameter of the wire is 2.00mm calculate the stress on the wire and strain in the wire. With full workings please

*asked on April 23, 2018* -
## biomechanics

If a person is in the air during a jump can they modify the path in the air of: a) Their whole body centre of gravity b) Their foot c) Theirpelvis

*asked on January 25, 2018* -
## Math

Your older sister drove 500 miles to college one way in ten hrs what was her average velocity

*asked on December 6, 2017* -
## Math

the cote family car gets between 25 and 29 miles per gallon of gasoline the fuel tank holds 17 gallons of gasoline and the cotes refill the tank whenever it is 1/4 full the cost of gasoline will be 3.47 and 3.69 per gallon A) write expressions to estimate

*asked on October 29, 2017* -
## physics

adsa

*asked on September 25, 2017* -
## Physics

a bicycle chain is wrapped around a rear sprocket (r=.039m) and a frond sprocket (r=0.10m) the chain moves with a speed of 1.4 m/s around the sprockets while the bike moves at a constant velocit find the madnitude of the acceleration of a chain link that

*asked on September 25, 2017* -
## math

four more than three times a number equals 27

*asked on June 7, 2017* -
## Maths

Mrs Ricky borrowed $5,340 at a bank at 9.5% per annum simple interest for 5 years. (A) the sum of money paid in interest to the bank. (B) the total amount of money repaid to the bank. (C) the value of each monthly installment.

*asked on January 13, 2017* -
## Math

Ryan burned 315 calories in 30 minutes . If ryan works out for 1.5 hours , how many calories can he expect to burn?

*asked on December 14, 2016* -
## Math

The table shows the number of volunteers that work at a radio-thon for different numbers of hours . How many volunteers can be expected to go to work for 9 hours?

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

the sum of the ages of three redwood trees is exactly one thousand years. when the youngest tree reaches the age of the middle tree, the middle tree will have reached the age of the oldest tree. at that time the middle tree will be four times the current

*asked on September 12, 2016* -
## Math

If a storage tank is holding 450 litres when it is three-quarters full, how much will it contain when it is two-thirds full?

*asked on September 3, 2016* -
## Math

The following regular hexagon A ____________B / \ / \ / \ F\ /C \ / E\____________/D has two diagonals going through it, FD and CE. These two lines form 3 triangles. We know that the area of the hexagon is 1. What is the area of those 3 triangles?

*asked on August 26, 2016* -
## calculus

Find all first and second partial derivatives of z with respect to x and y if x^2+4y^2+16z^2−64=0.

*asked on August 24, 2016* -
## calculus

Find lim as (x,y) goes to (0,0) of (e^(-x^2-y^2)-1)/(x^2+y^2).

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

A particle moves so that its position is given by ⟨cos(t),sin(t),cos(6t)⟩. Find the maximum and minimum speeds of the particle.

*asked on August 19, 2016* -
## calculus

Find an equation of the plane containing the line of intersection of x+y+z=1 and x−y+2z=2, and perpendicular to the x-y plane.

*asked on August 17, 2016* -
## calculus

Do the three points (1,2,0), (−2,1,1), and (0,3,−1) form a right triangle? I think they do by using dot product. Do the three points (1,1,1)(1,1,1), (2,3,2)(2,3,2), and (5,0,−1)(5,0,−1) form a right triangle? I think they don't.

*asked on August 15, 2016* -
## calculus

A force of 10 pounds is applied to a wagon, directed at an angle of 30∘30∘. Find the component of this force pulling the wagon straight up, and the component pulling it horizontally along the ground.

*asked on August 15, 2016* -
## calculus

Find the Maclaurin series of xcos(x^2).

*asked on August 7, 2016* -
## Calculus

Calculate the interval of convergence. Sigma from n=1 to infinity of (n!*x^n)/n^n. Calculus - Steve, Friday, July 29, 2016 at 11:52pm try using the ratio test. You should be able to show that the series converges for |x| < e I tried and I got |x|lim

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

Calculate the interval of convergence. Sigma from n=1 to infinity of (n!*x^n)/n^n.

*asked on July 30, 2016* -
## Math

Solve the equation using exact values. Check for any extraneous roots. 9^2x+4(9^x)=21.

*asked on July 23, 2016* -
## math-steve

When Mr. Lucky starts betting, he has 3 dollars. On any bet, he wins with probability 1/3 and loses with probability 2/3. If he wins a bet, the total amount of money he has triples. If he loses a bet, he loses 2/3 of the total amount of money he has. Mr.

*asked on July 9, 2016* -
## math-steve

When Mr. Lucky starts betting, he has 3 dollars. On any bet, he wins with probability 1/3 and loses with probability 2/3. If he wins a bet, the total amount of money he has triples. If he loses a bet, he loses 2/3 of the total amount of money he has. Mr.

*asked on July 5, 2016* -
## math

When Mr. Lucky starts betting, he has 3 dollars. On any bet, he 7. wins with probability 1/3 and loses with probability 2/3. If he wins a bet, the total amount of money he has triples. If he loses a bet, he loses 2/3 of the total amount of money he has.

*asked on July 5, 2016* -
## Math

A circle of radius greater than 9 cm is inscribed in the square ABCD. A point P on the circle is 8 cm from side AB of the square, and 9 cm from side AD. What is the radius of the circle? D-----------C | | | |

*asked on July 4, 2016* -
## Calculus

How do you find the derivative of sqrt(x+sqrt(x+sqrt(x+.......)))?

*asked on March 30, 2016* -
## Calculus

Use the integral identity: ∫(a-1) (1/(1+x^2))dx=∫(1-1/a) (1/(1+u^2))du for a>1 to show that: arctan(a)+arctan(1/a)=π/2

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

What is the largest integer n such that 1440/(n^2-1) is an integer?

*asked on March 6, 2016* -
## math

What is the largest integer n that 4n+1 is a multiple of n+1?

*asked on March 6, 2016* -
## Math

How many digits are in the decimal representation of 5^40? No calculator allowed.

*asked on March 3, 2016* -
## calculus

There is a shape first a regular triangle inscribed in a circle, and inscribed in a square, inscribed in a circle, inscribed in a pentagon, etc. so polygon circle polygon circle, etc. the radius of the first circle is 1, find an equation for radius n.

*asked on February 23, 2016* -
## math

Prove that sinx=x for x is a real number has only one solution at x=0

*asked on February 16, 2016* -
## Math

If a valid time on a 12 hour time period has the hour hand and minute hand switched, how many times will that result in another valid time? I have found 11, which is when the hour hand points at the same place as the minute hand. I know there is much more,

*asked on February 6, 2016* -
## Calculus

What is the derivative of f^3(g(x)) where both are continuous functions? I used chain rule and got 3f^2(g(x))f'(g(x))g'(x) but it is not right.

*asked on February 6, 2016* -
## Calculus

1. Prove that (f(x+h)-f(x-h))/2=f'(x) 2. Prove that any parabola sastifies the equation (f(x+h)-f(x-h))/2=f'(x) For the first question, I tried to solve it but there is an extra h tacked on to one side. I have no clue what to do for the second question.

*asked on February 2, 2016* -
## Calculus

Use the identity sin^2x+cos^2x=1 and the fact that sin^2x and cos^2x are mirror images in [0,pi/2], evaluate the integral from (0-pi/2) of sin^2xdx. I know how to calculate the integral using another trig identity, but I'm confused about how to solve this

*asked on January 19, 2016* -
## Calculus

Integrate 1/sinx dx using the identity sinx=2(sin(x/2)cos(x/2)). I rewrote the integral to 1/2 ∫ 1/(sin(x/2)cos(x/2))dx, but I don't know how to continue. Thanks for the help.

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

Find the volume generated by rotating about the x axis the area bounded by x=0, y=2sinxcosx,, y=2cosx, and x=4, if 0≤x≤pi/2. I don't get the graph.

*asked on January 5, 2016* -
## Calculus

A thin plate lies in the region between the circle x^2+y^2=4 and the circle x^2+y^2=1 above the x axis. Find the centroid. For the second part, same question except the region in the first quadrant instead of above x axis. For part a, I figured out bar x

*asked on January 3, 2016* -
## Calculus

A 20 meter long steel cable has density 2 kg per meter. It is hanging straight down. There is a 100 kg bucket of concrete attached to the bottom. How much work is required to lift the bucket 10 meters by lifting the cable ten meters? Gravitational force

*asked on January 1, 2016* -
## Salk

What is 58,420 in simplest form (math question 6grade)

*asked on December 15, 2015* -
## trigonometry

from a point A on the side of straight road, the angle of elevation of the top of the electric pole is 15°20'. from a point B on the same side of the road, the angle of elevation of the top of the pole is 10°52'. If the distance of A and B is 50 meters,

*asked on December 8, 2015* -
## wcccd

A car dealership offers a $1400 rebate and a 5% discount off the price of a new car. Let p be the sticker price of a new car on the dealer's lot, r the price after the rebate, and d the discounted price. Then r(p) = p − 1400 and d(p) = 0.95p

*asked on November 21, 2015* -
## wcccd

The period p of a pendulum, or the time it takes for the pendulum to make one complete swing, varies directly as the square root of the length L of the pendulum. If the period of a pendulum is 1.3 s when the length is 2 ft, find the period when the length

*asked on October 18, 2015* -
## DC-AC Electronics

What is a Series Capacitor

*asked on August 5, 2015* -
## Maths

A cylindrical tank has the dimensions a 100cm and 140cm ,if the tank is filled with 275 liters of water what is the depth of water in the tank

*asked on June 16, 2015* -
## Science

what is the combination of waves?

*asked on May 24, 2015* -
## Languages Arts

Which of the following describes the word dew? A. What happens when you don't get enough sleep for a few days. B. What happens to your teeth when you eat too much candy. C. What happens to plants in a garden overnight. D. What happens when you leave a

*asked on February 6, 2015* -
## Computers

1. What does the term "fair-use exception" mean? (1 point) to use only material that has never been published the ability to use material made by others for educational purposes an exception to copyright restrictions for images only Educational material is

*asked on February 3, 2015* -
## Science

3.What are the advantages of your design over using fossil fuels (I JUST WANNA KNOW WHAT DOES THE QUESTION MEAN LIKE BREAK IT DOWN FOR ME YOU DON'T HAVE TO DO IT THANK YOU)

*asked on January 9, 2015* -
## English

1) In the story "A Meeting in the Dark," John's character advances the plot and communicates the theme through each of the following conflicts except. A)man vs. man B)man vs. nature C)man vs. society D)man vs. himself 2) Read the following sentences that

*asked on December 11, 2014* -
## English

Which of the following lines from the poem best shows the speaker's distaste for the situation? A)Silence. Silence transmission of Pressurized good breeding? B)OR VERY DARK?" Button B. Button A. Stench. C)Pushed dumbfounded to beg simplification. D)Her

*asked on December 9, 2014* -
## English

In "Telephone Conversation," which of the following best describes the shift in the speaker's attitude towards the landlady? A)from fuming to mischievous B)from angered to conciliatory C)from embarrassed to arrogant D)from cooperative to ninchalant

*asked on December 9, 2014* -
## Maths

The first term of an AP is 12 and that of a GP is 6. The common difference and the common ratio are equal, so as are the sum of the fist 3 terms. Find the possible values of the common difference?

*asked on December 1, 2014* -
## physics

A constriction in a pipe reduces its diameter from 7.9 cm to 1.8 cm . Where the pipe is wider, the fluid velocity is 8 m/s. Find the fluid velocity where the pipe is narrow. Answer in units of m/s

*asked on November 7, 2014* -
## physics

A circular swimming pool has a flat bottom and a 4.39 m diameter. It is filled with water to a depth of 1.51 m. There is 1.36 atm of pressure on the top surface.

*asked on November 7, 2014* -
## physics

What force F must be applied to the small piston to maintain the load of 49 kN at a constant elevation?

*asked on November 7, 2014* -
## physics

If the average gauge pressure in the vein is 14400 Pa, what must be the minimum height of the bag in order to infuse glucose into the vein? Assume that the specific gravity of the solution is 1.05. The acceleration of gravity is 9.8 m/s

*asked on November 6, 2014* -
## physics

A 73 kg man in a 4.3 kg chair tilts back so that all his weight is balanced on two legs of the chair. Assume that each leg makes contact with the floor over a circular area of radius 1.5 cm. Find the pressure exerted on the floor by each leg. The

*asked on November 6, 2014* -
## Calculus

It is known that the quantity demanded of a certain make of portable hair dryer is x hundred units/week and the corresponding wholesale price is shown below where p is in dollars. p = sqrt(225 - 5x) The supplier will make x hundred units of hair dryers

*asked on September 25, 2014* -
## Reading

8. in which sentence is the word gesture used correctly ( 1 point) A.Smiling, she extended her hand in a gesture of friendship. B.Tired from a long day of work, I put my gesture down on the table wearily.**** C.He called for a gesture next Tuesday, and all

*asked on September 17, 2014* -
## science

Is it ture that air molecules have weaker attractions then water molecules? A.Yes B.No

*asked on May 6, 2014* -
## Math

If a boat rental company charges 100.00 a day plus .50 per kilometer and another company charges 90.00 a day plus .60 per kilometer, at how many miles would the bill at both companies be the same?

*asked on January 31, 2014* -
## Math

A candle has length 25 cm. Once lit, the candle burns away at a constant rate of 0.6 cm per minute. What is the length of the candle (in cm) 20 minutes after it is lit?

*asked on September 22, 2013* -
## programming

where are the errors the pseudocode debugging exercise // This application reads student typing test data // including number of errors on the test, and the number // of words typed per minute. Grades are assigned based // on the following table: // Errors

*asked on September 15, 2013* -
## programming

trying to debug pseudocode 2. Th e Springwater Township School District has two high schools—Jeff erson and Audubon. Each school maintains a student fi le with fi elds containing student ID, last name, fi rst name, and address. Each fi le is in student

*asked on September 5, 2013* -
## programming

DEBUGGING // The two senior class homerooms at Littleville High School // are having a fundraising drive for the prom. Each time a student // solicits a contribution, a record is created with the // student's name and the value. Two files have been created

*asked on September 1, 2013* -
## programming

Find Bugs in the pseudocode start Declarations num category num SIZE = 5 num QUIT = 9 num sales[SIZE] = 0, 0, 0, 0, 0 string HEAD1 = "Sales" string HEAD2 = "Category Number of Sales" output "Enter category ", QUIT, " to quit " input category while category

*asked on August 31, 2013* -
## Math

Kathy drove from Dry Creek to Cactus, a distance of 250km. She increased her speed by 10km/h for the 360km trip from Cactus to spur. If the total trip took 1 hours, what was her speed from Dry creek to Cactus.

*asked on April 7, 2013* -
## math

A runner starts a race at the starting line. A second runner starts at 44 yards. If the first runner moves 7 yards each second and the second runner moves 3 yards each second, at what distance will the first runner catch the second runner?

*asked on January 15, 2013* -
## language

introduction for an essay . show me please

*asked on October 2, 2012* -
## english

what is a simple predicate in a well-fed lion will be peaceful thank you

*asked on August 31, 2012* -
## calculus

a graph shows the divends declared per share of stock for the colgate-palmolive company for the years 1988 through 1998. Find the slope of the line segment connecting the years 1988 and 1998

*asked on August 22, 2012* -
## statistics

Considering that a researcher can test at the

*asked on June 16, 2012* -
## Math Models

The distance needed to stop a car (d) varies directly with the aquare of the speed of the car (s). If a car traveling 25 mph requires 0 feet to stop, how many feet will be required to stop a car that is traveling at 60 mph?

*asked on June 13, 2012* -
## Chemistry

What massof iron is contained in 86.6 grams if FeSO4?

*asked on June 12, 2012* -
## Statistics

The Arcade shack is a manufacturing plant located in San Diego where 800 factory workers are employed. The personnel department selected 36 factory employees at random for the statistical study. construct a 95% interval for the percentage of males in the

*asked on May 23, 2012* -
## business

Lansing Auto Pats, Inc., has projected sales of $25,000 in October , $35,000 in November, and $30,000 in December of the company’s sales 20 percent are paid for by cash and 80 percent are sold on credit. The credit sales are collected one month after the

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

A solution is prepared by adding 50.3 mL of concentrated hydrochloric acid and 16.6 mL of concentrated nitric acid to 300 mL of water. More water is added until the final volume is 1.00 L. Calculate [H+], [OH -], and the pH for this solution. [Hint:

*asked on February 29, 2012* -
## Finite with Calculus Applications

The Ball Company manufactures three types of lamps, labeled A,B,and C. Each lamp is processed in two departments, I and II. Total available work-hours per day for departments I and II are 400 and 600, respectively. No additional labor is available. Time

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

Consider the reaction below. 3 O2(g) --> 2 O3(g) At 175°C and a pressure of 128 torr, an equilibrium mixture of O2 and O3 has a density of 0.168 g/L. Calculate the Kp for the above reaction of 175°C

*asked on February 21, 2012* -
## Chemistry

The equilibrium constant Kp for the reaction below at 700°C is 0.76 atm. CCl4(g) --> C(s) + 2 Cl2(g) Determine the initial pressure of carbon tetrachloride that will produce a total equilibrium pressure of 1.20 atm at 700°C

*asked on February 21, 2012* -
## eng 125

How is the more direct performative aspect of drama and/or poetry reflected in these forms?

*asked on November 11, 2011* -
## eng 125

Reflecting on this week’s literary readings, as well as your own reading experiences, identify at least one major similarity and one major difference between the forms of the short story and the poem. How do the differences between these literary forms

*asked on October 27, 2011* -
## physics

Suppose that it takes 10.0 h to drain a container of 5100 m3 of water. What is the "mass flow rate," in kilograms per second, of water from the container?

*asked on August 26, 2011* -
## algebra1

1/2x-6=5

*asked on July 19, 2011* -
## algebra1

1/2x-6=5

*asked on July 19, 2011* -
## math

a farmer plants a square block of trees. he plants another 25 tress and still has a square plantation. how many trees in the new plantation

*asked on February 14, 2011* -
## math

5x^3y^4/14x^5y^-8

*asked on February 3, 2011* -
## 10th grade

log (x-9) - 109x=log 19

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

a+c=8

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

The side length,s, of a cube is related to its volume, v, by the formula s=v^1/3. A cube box when filled with materials has a volume of 729 cm2. What is the side lenth of the cube box used? Please help me step by step with this. I don't know where to start

*asked on November 20, 2010* -
## Math

The side length,s, of a cube is related to its volume, v, by the formula s=v^1/3. A cube box when filled with materials has a volume of 729 cm2. What is the side lenth of the cube box used? Please help me step by step with this. I don't know where to start

*asked on November 18, 2010* -
## 4th grade science

What sea animal you get when you unscramble the letters gsntoe

*asked on October 26, 2010* -
## Chemistry

Thank you for your help. I did want to clarify why you are only calculating the Molar Mass for H2 and not the molar mass for H2O (or even H2O2). I'm not sure why you did this. Please clarify. See below: The following reaction represents the decomposition

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

The following reaction represents the decomposition of hydrogen peroxide 2H2O2 -> o2 (g) + 2H2O (l) How many molecules of water are produced from the decomposition of 3.4g of Hydrogen peroxide, H2O2? Please walk me through this one, I need more then just

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

Hi I just wanted to verify a few answers to chem questions I'm working on. Was wondering if anyone could help? 1. Calculate the molar concentration of 2.34g of lithium hydroxide, LiOH disolved in water to make 750ml of solution. My answer was CLiOH = 0.133

*asked on October 17, 2010* -
## algebra

2/3m + 17 = 17

*asked on October 13, 2010*

## Pages

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