Saturday

May 28, 2016
Total # Posts: 71

**Physics**

A car of mass 720 kg travels round a horizontal, semicircular racetrack of radius 200 m, at a constant speed of 48 km/h. What is the sideways component of the force exerted by the track on the car’s tyres?
*April 14, 2016*

**Math**

find the three geometric means between -2/3 and -54
*May 7, 2015*

**Math**

find the third term in the expansion of (3x-y)^6
*May 7, 2015*

**Math**

Thank you! :)
*April 22, 2015*

**Math**

Find the LCM and GCF of the following numbers: 1) 2016 and 756 2) 10140 and 705551 3) 17 664 and 288 4) 3960, 150 and 495 I believe the answers are: 1) LCM = 6048 GCF = 252 2) LCM = 7 154 287 140 GCF = 1 3) LCM = 52 992 GCF = 2208 4) LCM = 19 800 GCF = 15
*April 22, 2015*

**Science**

How do you think that a plane could initialize the dragging? (Think of the parts of the wing that move)
*April 21, 2015*

**Davis**

Calculate the mass of water produced when 4.36g of butane reacts with excess oxygen.
*March 29, 2015*

**Health**

Cocaine abuse can have neurological effects such as ________. A. Strokes B. Abdominal pain C. Heart attacks D. All of the above ** I have studied this twice already and I'm still a little confused on the subject because the section it's in doesn't make much since...
*November 11, 2014*

**maths**

i dont know
*February 3, 2014*

**Car stuff?**

No, I have no idea what the question is wanting.
*January 2, 2014*

**Car stuff?**

Which one of these auto expenses would be considered variable? A. Insurance premiums B. Vehicle registration renewal C. Gasoline D. Loan payments
*January 2, 2014*

**ENGLISH**

What does the qoute mean. Can a counter example or counter claim be made? "To enjoy good wealth , to bring true happiness to ones family, to bring peace to all, one must first discipline and control ones own mind. If a person can control his mind he can find his way to ...
*December 15, 2013*

**Math**

Why 1/2 of 1 is 1/2, what is half of 2,3, and 4/
*April 23, 2013*

**Algebra**

The floor of a dance studio is covered with 435 tiles. The owner of the studio replaced the tiles last year. The tiles cost $15 for a set of 8 and $2 for each additional tile. What is the monthly increase the owner charged each of her 34 students over a 6-month period to cover...
*February 26, 2013*

**Algebra**

The floor of the studio is covered with 615 square tiles that measure 2 feet by 2 feet. The owner of the studio replaced the tiles last year. The tiles cost $15 for a set of 8 and $2 for each additional tile. What is the monthly increase the owner charged each of her 34 ...
*February 26, 2013*

**Algebra**

To complete this question - The floor of the studio is covered with 615 square tiles that measure 2 feet by 2 feet.
*February 26, 2013*

**Algebra**

The owner of the studio replaced the tiles last year. The tiles cost $15 for a set of 8 and $2 for each additional tile. What is the monthly increase the owner charged each of her 34 students over a 6-month period to cover the cost of replacing the tiles?
*February 26, 2013*

**6th grade Math**

Maria is applying for a summer job. Six employees doing the same work earn $8.00, $8.50, $9.00, $9.50, $10.00, and $23.50 per hour. In the interview, the boss tells Maria that the median of the hourly wages is $9.25. Is the boss’s statement misleading? Why or why not?
*October 9, 2012*

**Math**

Thank you! I got it right then. I wanted to make sure.
*October 9, 2012*

**Chemistry**

why would the concentration of ascorbic acid decrease as the temperature rises? Also is there any reason that the concentration would drop suddenly at 30 C then go back up and continue to decrease evenly. ( i repeated these 3set titrations 3 times and all were concordant but ...
*June 12, 2012*

**Chemistry**

the details of the experiment were to find out how temperature affects ascorbic acid by doing titrztions then to write a report about it all of my titrations were concordant it was only at 30 C I was getting weird results
*June 12, 2012*

**Chemistry**

why would the concentration of ascorbic acid decrease as the temperature rises? Also is there any reason that the concentration would drop suddenly at 30 C then go back up and continue to decrease evenly. ( i repeated these 3set titrations 3 times and all were concordant but ...
*June 12, 2012*

**ISDS**

true
*March 13, 2012*

**Physics**

A man stands on a platform that is rotating (without friction) with an angular speed of 1.21 rev/s; his arms are outstretched and he holds a brick in each hand The rotational inertia of the system consisting of the man, bricks, and platform about the central axis is 4.32 kg&...
*November 18, 2011*

**Physics**

What is the speed of a transverse wave in a rope of length 1.50 m and mass 69.0 g under a tension of 500 N?
*November 12, 2011*

**French**

le créer
*November 5, 2011*

**science**

Amy needs 5.0 V for some integrated circuit experiments. She uses a 7.5 V battery and two resistors to make a voltage divider. One resistor is 310 . She decides to make the other resistor smaller. What value should it have?
*October 22, 2011*

**chemistry **

Next time please have an explanation for your answer
*July 3, 2011*

**physics**

a long jumper travels 8.95 meters during a jump. he moves at 10.8 m/s when starts his leap. at what angle from the horizontal must he have been moving when he started his jump? you may need the double angle formula: 2 sin u cos u- sin (2u)
*June 24, 2011*

**physics**

a juggler throws a ball with an initial horizontal velocity of +1.1 m/s and an initial vertical velocity of +5.7 m/s. What is its acceleration at the top of its flight path? make sure to consider the sign when responding. consider the upward direction as positive.
*June 24, 2011*

**physics**

i can do the work all on my own but i'm not any good at the formulas, math is a very tough subject for me
*June 24, 2011*

**physics**

a friend throws a baseball horizontally. he releases it a height of 2 m and it lands 21 m from his front foot, which is directly below the point at which he released the baseball. (a) how long was it in the air? (b) how fast did he throw it? (a) (b)
*June 24, 2011*

**physics**

an ice skater starts out traveling with a velocity of (-3,-7) m/s. he performs a 3 second maneuver and ends with a velocity of (0, 5) m/s. (a) what is his average acceleration over this period? (b) a different ice skater starts with the same initial velocity, accelerates at (1...
*June 24, 2011*

**physics**

a golf ball is launched at a 37 degree angle from the horizontal at an initial velocity of 48.6 m/s. state the initial velocity in rectangular coordinates. please show me how to figure this out
*June 24, 2011*

**Math**

Log functions: A new car has an interior sound level of 70 dB at 50 km h. A second car, at the same speed, has an interior sound level that is two times more intense than that of the new car. Calculate the sound level inside the second car.
*May 27, 2011*

**Functions**

Problem solving with logarithmic functions: A new car has an interior sound level of 70 dB at 50 km h. A second car, at the same speed, has an interior sound level that is two times more intense than that of the new car. Calculate the sound level inside the second car.
*May 26, 2011*

**RES342**

In 1000 samples, assuming that the null hypothesis is true, how many times would you expect to commit Type I error if alpha=.05? a. 95 times b. 10 times c. 50 times d. Not enough information given to provide an answer
*December 2, 2010*

**RES342**

Using Problem #4, what is the probability the amount requested is between $65,000 and $80,000? a. .4500 b. .2902 c. .5987 d. None of the above
*December 2, 2010*

**RES342**

A normal distribution has a mean of 80 and a standard deviation of 14. Compute the probability of a value between 75.0 and 90.0. a) .2022 b) .3595 c) .4017 d) None of the above
*December 2, 2010*

**RES342**

A sample of 16 people reveals the mean yearly consumption to be 60 pounds with a standard deviation of 20 pounds. What is the best estimate of the population mean? a. X=60.00 b. X=0 c. X=50.00 d. X=none of the above
*December 2, 2010*

**RES342**

A normal distribution has a mean of 50 and a standard deviation of 4. Determine the value below which 95% of the observations will occur.
*December 2, 2010*

**macroeconomics**

moral hazard- the possibility that a borrower might negage in riskier behavior after a loan has been obtained.
*September 20, 2010*

**macroeconomics**

match each of the rationales for finacial intermediation listed below with at least one of the following: insurance company, pension fund, savings bank. a. adverse selection b. moral hazard c. lower managment cost generated by larger scale
*September 20, 2010*

**macroeconomics**

what happens to the net public debt if the federal government operates next year with a : budget deficit, balanced budget, budget surplus
*September 20, 2010*

**art**

why is the early christian tomb painting important to the history of art, what's it's influence, what is it's sugnuficance, why is it impt to us today?
*September 16, 2010*

**macroeconomics**

suppose that congress enacts a significant tax cut with the expectation thatthis action will stimulate sggregated demand and puch the real gdp in the short run. in gact, however, neither real gdp now the price level changes significantly as a result of the tax cut. what might ...
*September 15, 2010*

**college Macroeconomics**

Suppose that there is a temporary, but significant,increase in oil prices in an economy with an upward-sloping SRAS curve. If policy makers wish to prevent the equilibrium price level from changing in response to the oil price increase, should they increase or decrease the ...
*September 11, 2010*

**college Macroeconomics**

consider a country with an economic structure consistent with the assumptions of the classical model. Suppose that businesses in this nation suddenly anticipate higher future proftability from investments they undertake today. explain whether or how this could affect the ...
*September 11, 2010*

**Microeconomics**

Suppose that the position of a nation's long-run aggregate supply curve has not changed, but its long-run equilibrium price level has increased. Which of the following factors might account for this event? a. A rise in the value of the domestic currency relative to other ...
*September 10, 2010*

**macro**

This year, a nations long run equilibrium real gdp and price level both increase. which of the following combinations of factors might simultaneously account for both occurances? a. an isolated earthquake at the begining of the year desroyed part of the nation capital stock, ...
*September 8, 2010*

**Chemistry ASAP**

what would be the concentration of chromate ion, CrO4^-2, in a saturated solution of CaCrO4. (Ksp= 7.1x10^-4)
*May 18, 2010*

**artist**

To what extent do artists express or influence culture
*February 26, 2010*

**calculus**

Consider the following shaded region. Find the area S of this region if a = 6, b = 3. (Give an exact answer.) The two graphs intercept at 0 and the other limit is not given. The integral is int(ax-x^2)-(bx. So y=ax+x^2 is the graph on top and y=bx is at the bottom.
*February 12, 2010*

** Algebra question rewritten**

If a pro basketball player has a vertical leap of about 35 inches, what is his hang-time? Using the hang-time function V = 48T^2
*May 4, 2009*

**ALGEBRA**

If a pro basketball player has a vertical leap of about 35 inches what is his hang-time? Use the hang-time function V=48T^2. Thank you I did mess up the typing last time didn't I?
*May 4, 2009*

**algebra**

IF a pro basketball player has a vertical hang-time of about 35 inches, what is his hang-time? Use hang-time function V=48T^2. This is how I have started this question 35=38T^With this my answer is 0.854, -0.854 Is this right?
*May 4, 2009*

**chemistry**

If you are given .060m. sugar (glucose-C6H12O6), .030m. AlCl3 and .025m. NaOH. How do you figur out lowest boiling point and lowest vapor pressure of the given solutions?
*February 23, 2009*

**chemistry**

Compute the vapor pressure of water above a solution formed by dissolving 25.00 grams of magnesium sulfate, MgSO4 (MM=120.3) in 95.00 grams of water at 338K. The vapor pressure of pure water at 338K is 188.0 torr.
*February 23, 2009*

**chemistry**

A aqueous solution of acetic acid with a density of 1.25 g/ml is 30.0% by mass HC2h3O2 (MM=60.0) Compute the molarity of this solution. I figured out that if you divide 30.0 by the molar mass 60.0g which gives you .5 mol. I cannot seem to figure out what i change 1.25 g/ml ...
*February 23, 2009*

**science**

If boiling permanganate eliminates possible reducing agents in a solution, do I still need to do blank titration?
*February 5, 2009*

**3rd grade**

yes beacuse you can only add equal groups and not odd groups.
*November 12, 2008*

**science**

Hey I have another question, what is the impact of the space pen to the society?? Thanks sooooooooo much if you can help
*October 22, 2008*

**Science**

Hey I need the answer by tommorrow so can you plzzzzzzz help? Well my question is... Is the space pen still around in the markets?? Thank you soooooooooooooooooooo much if you can help. :)
*October 22, 2008*

**Science**

Will humans be able to hear a sound that has a wavelenth of 26.314 m (57 Hz, 1500 m/s)? Explain? If a dolphin sends out an ultrasound underwater toward a boat and the sound returns in 1 second, how far away is the boat?
*July 27, 2008*

**math**

emm nope i dont get it, sorry, can you do this using pythagoras??
*February 10, 2008*

**math**

A is the point (1,2), B is (7,4) and C is (5,6). Calculate the length of each side of the triangle ABC.
*February 10, 2008*

**Alegrba**

Please check my answers. Also, can I see some graphs of y-axis symmetry, orgin of symmetry, or neither? Determine whether the graph of the polynomial has y-axis symmetry, origin symmetry, or neither. f(x) = 4x^2 - x^3 -My answer: orgin of symmetry f(x) = 5 - x^4 -My answer: ...
*October 15, 2007*

**chemistry**

my younger sister has a homework assignment to find out and draw the hazard symbols found on the following.... vinegar milk of magnesia toothpaste pickled onions orange juice washing powder soap lemonade .....we've looked around the house but nothing seems to have the ...
*September 25, 2007*

**Math**

A triangle has sides 3x + 7, 4x – 9, and 5x + 6. Find the equation that represents its perimeter I believe you put each equation which represents a side in parenthesis: (3x + 7) + (4x – 9) + (5x + 6)
*February 22, 2007*

**8th grade algebra**

I need HELP with integers and algebraic expressions.
*February 1, 2007*

**acids and alkalis**

THANKS FOR YOUR HELP :d
*November 4, 2006*

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