Thursday

January 29, 2015

January 29, 2015

Total # Posts: 425

**Calculus III**

A particle is moving in R2 according to the law x=t^2, y=t^3 (time is measured in seconds, coordinates in meters). (a) What is the average velocity of the particle over the time interval [1,1.1]? (b) What is the instantaneous velocity of the particle at time t=1?
*October 12, 2010*

**PHYSICS**

A flatbed truck of mass 2000kg traveling 20 m/s (about 45mph)carries a load of mass 500kg positioned 3 meters behind the cab. The load is kept on the truck by friction, and the coefficient of friction between the load and the bed of the truck is 0.5. What is the shortest ...
*October 12, 2010*

**Science**

What is the hydrologic cycle?
*October 7, 2010*

**Science**

Jake was doing a lab to find the density of metal. Here's his data: mass of the metal sample: 45 grams, volume of metal sample: 4.5 mL. Use his data to determine the density of the metal sample. Can you help? I don't get this.
*October 7, 2010*

**Algebra 1 Honors**

What Is 45% of 30?
*September 23, 2010*

**Biology 9th grade**

describle plasma membrane
*September 16, 2010*

**math (trig)**

from the top of a bridge over the burlington canal, maria looks down at a sailboat at an angle of depression 15 degrees.the bridge is 18m above the water. calculate the horizontal distance from the bridge to the sailboat
*September 14, 2010*

**math**

Beth drives 55 miles on one hour.she says she will drive a distance of about 830 miles when she drives for 26 hours is Beth's estimate right or wrong?
*September 7, 2010*

**math**

A toy manufacturer is introducin g two new dolls, my first baby and my real baby. IN one hour, the company can produce 8 first baby dolls and 20 real baby dolls. Because of demand, the company produces at least twice as many first babies as real babies. The company spends no ...
*August 29, 2010*

**Physics**

Using Planck’s constant as h = 6.63 E-34 J*s, what is the wavelength of a proton with a speed of 5.00 E6 m/s? The mass of a proton is 1.66 E-27 kg. Remember to identify your data, show your work, and report the answer using the correct number of significant digits and ...
*June 30, 2010*

**Chemistry**

An excess of zinc metal is added to 50.0 mL of a 0.100 M AgNO3 solution in a constant-pressure calorimeter. Assuming that the density of the solution is the same as for water, calculate the mass of the solution.
*June 30, 2010*

**Algebra 2 Honors**

no, i need an exact answer
*June 6, 2010*

**Algebra 2 Honors**

what is the exact value of tan375degrees
*June 6, 2010*

**science**

WHich of the following systems will the endocrine system use to send any of it messaqges? THe circulatory The immune The reproductive The excretory
*April 18, 2010*

**science**

Feedback inhibition means that an increase in a substance will what?
*April 18, 2010*

**college math**

(x)(x-1)(x+1)
*April 15, 2010*

**college math**

(3x)(y + 3y + 2)
*April 15, 2010*

**History**

I'm writing a comparison paper on two popes. One of them is Innocent III, but I'm not sure what a good comparison for him would be? The catch is that it has to be within the time period: 1100-1272 Any ideas? Thanks!
*April 13, 2010*

**3rd grade**

refer to the frequency table to anwser the questions
*April 8, 2010*

**science**

100
*April 1, 2010*

**calculus**

A box with a square base and an open top is to have a volume of 68in^3 . Neglect the thickness of the material used to make the box, and find the dimensions of the box that would minimize the amount of material used. The width and length of the box are each ___ in. The height ...
*March 30, 2010*

**8th grade math**

which ezpresses 3,571,000 in scientific notation?
*March 8, 2010*

**Chemistry**

You are given a jar containing a mixture of three different solid substances. The particles of each substance are larger than 0.5 cm in diameter. All you know about the substances is that each is a pure metal. Describe a method for determining the identities of the metals that...
*February 23, 2010*

**math**

suppose a pizza slice is a circle sector with a 24 angle and a radius of 15 inches. If a can of pizza sauce will cover 94 square inches of pizza, how many cans of sauce are needed to cover this slice?
*February 18, 2010*

**math**

9497463345x932234524?
*February 11, 2010*

**gr12 chem**

Both propane and propene react with bromine. State two ways in which these two hydrocarbons can be distinguished in their reaction with bromine
*February 5, 2010*

**consumer math**

b 48.87
*February 4, 2010*

**history**

what was the situation of african americans in e united states from 1800 to 1860.
*February 1, 2010*

**chemistry**

we boiled water in a beaker and put a flask with a small amount of an unknown liquid into the flask then covered it with a lid with a pinhole in it, and we placed this flask in the boiling water bath until the liquid evaporated, then we let it cool and condense.
*January 27, 2010*

**chemistry**

during an experiment, if not all of a liquid vaporizes, in a flask with a cap with a pinhole. will the reported molecular weight be too high or low? i was thinking too high because the liquid weighs more.
*January 27, 2010*

**geometry proofs **

given: line QO congruent to QN, line NM CONGRUENT TO OP Prove: triangle QMP IS ISOCELES 5. TRIANGLE QNM CONGRUENT TO TRIANGLE QOP WHAT IS THE REASON 7. TRIANGLE QMP IS ISOCELES WHAT IS THE REASON
*December 8, 2009*

**chemistry**

We Know that : According to debroglies wavelength : λ = h / mv = 6.627 x 10 -34 J -s / 6.6 x10-24 x 10-3 kg / 1 g x 3.4x 107 mile / hr x 5 793 638.4 m / s / 1 mile / hr = 5.09 x 10-22 m
*December 2, 2009*

**Physics**

A 59 g particle is moving to the left at 29 m/s. How much net work must be done on the particle to cause it to move to the right at 38 m/s? .....i have tried two different ways and gotten the wrong answer. Kinetic Energy = 0.5 * Mass * (Change in Velocity)^2. Change in ...
*November 29, 2009*

**government**

this item can give a president real leverage in influencing congress?
*November 17, 2009*

**French**

Thanks, Ms. Sue. I looked up the spelling, and I've seen it spelled it both ways
*November 14, 2009*

**French**

surveilant
*November 14, 2009*

**For Haley**

I gave my answer on the question about probability. What's wrong with it? The one about the distributive property, also. I thought that was what he/she meant by "expanding." My bad.
*November 14, 2009*

**For Haley**

I'm not sure what you mean by my "last three responses." Please give me some examples of when I had answered incorrectly besides the one about expanding.
*November 14, 2009*

**Probability**

The probability that it's a queen would be 1/13, because there are 4 out of 52 cards in the deck that is a queen. 4/52 simplifies to 1/13. The probability that it's a spade would be 1/4, because there are 13 spades out of the 52 cards in the deck. 13/52 reduces to 1/4...
*November 14, 2009*

**probability**

Okay, hete is how to solve this problem: Since the probability that Alysha will miss is 0.15, that means that it is 15%, right? So, the probability that Alysha will NOT miss is 100 - 15, which is 85%. So the answer is 0.85 Now for Carla. 0.07 = 7%. 100 - 7 = 93%. So the answer...
*November 14, 2009*

**math g12**

If the ^ is a multiplication symbol, and you mean "expand" by using the distributive property, then this is the answer. n(a+b+c) is the same as: n(a) + n(b) + n(c) Which is na+nb+nc Hopefully, you know what this distributive property is, That would be VERY VERY ...
*November 14, 2009*

**Math**

The expected probability of rolling a die and landing on any number (1,2,3,4,5,6) would always be 1/6, because there are 6 possible outcomes, but only 1 will happen. I'm not sure i understand the question...
*November 14, 2009*

**social studies)**

Florida served as a safe haven for loyalists escaping the fighting of the northern colonies during the Revolutionary War. The British evacuation of loyalists from St. Augustine is well documented.
*November 14, 2009*

**pre algebra**

These are my steps: 52 = p + (-41) 52 = p - 41 (same thing) 52(+41) = p - 41 (+ 41) 93 = p
*November 13, 2009*

**math**

35, 27, 21, 15
*November 13, 2009*

**science**

The first would be distance. The second would be velocity.
*November 12, 2009*

**PLEASE HELP ME!!!**

That would be : C) Divide by 3 on both sides.
*November 12, 2009*

**10th grade algebra not ms.sue**

68 = 110 ---- ---- 2 x This is how to set up the proportion that zorro was talking about, although he did it incorrectly. Cross multiply: 110 (2) = 220 68 (x) = 68x Therefore: 220 = 68x Solve for x by dividing by 68 on both sides.
*November 12, 2009*

**algebra**

How do you find Standard Form for the problem: m=-3; b=2?
*November 11, 2009*

**grammar**

a declartive you delcare ex i had chips today for klunch. it has twqo subjects and 2 predicate it might look like a runon but dont get the two confused ex molly wants a fish sanwhich at bee resturant while her bother mathew wants fries from buger king
*November 11, 2009*

**5th grade**

The verb is "stood." It is describing "there," thus he "stood there."
*November 9, 2009*

**7th grade**

Circumference = 2 (pi) radius That is (2) times (3.14) times the (radius) The radius is half of the diameter
*November 9, 2009*

**ipc**

how do i solve spefic heat problems?
*November 2, 2009*

**Math**

-10+12
*October 19, 2009*

**Physics**

Change frequency to period T=1/f. Find the velocity v=2(pi)r. Find radial acceleration a=v^2/r. Then divide gravity by the radial acceleration that you found. g/a
*October 4, 2009*

**microeconomics**

In general, it is true that a more specialization is always better. b less specialization is always better. c specialization imposes costs as well as benefits. d more specialization is always worse.
*September 18, 2009*

**microeconomics**

Earth Movers and Shakers operates 3 iron ore mines. This table shows their daily production rates given the number of miners at each mine. All of the miners work for the same wage. mine-----------tons---- # of miners mother lode------100-------25 scraping bottom---30-------10 ...
*September 18, 2009*

**1st. grade**

Thermometer is used to show temperature
*September 17, 2009*

**Chemistry**

A solution is prepared by placing 72.8 g of calcium chloride in 120 g of water at 22C. The vapor pressure of water at 22C is 2.6 kPa. a)What is the boiling point of the solution? b)What is the freezing point of the solution?
*September 16, 2009*

**Chemistry**

What is the molality of ammonium ions in a 1.75 m solution of (NH4)3PO4?
*September 16, 2009*

**Math**

Creating the best fit straight line through a set of points on a graph is called 1. slope-intercept method. 2. connecting the dots. 3. linear regression. 4. the straight edge method. 5. the equation of a straight line.
*September 15, 2009*

**Math**

Creating the best fit straight line through a set of points on a graph is called?
*September 15, 2009*

**Math**

When graphing, which of the following is correct? a) The x-axis is the dependent axis, and the y-axis is the independent axis. b) The y-axis is the dependent axis, and the x-axis is the independent axis.
*September 15, 2009*

**9th grade**

can you show me how to work this problem 6x+2=6
*September 1, 2009*

**Math**

I need help with the 5 number summary for these #'s 7, 7, 5, 4, 1, 9, 8, 8, 8, 5, 2
*August 21, 2009*

**math**

Write the ratio of 4 1/3 to 6 in simplest form.
*August 16, 2009*

**Math**

I need to write 116 2/3 as a fraction or a mixed number.
*August 15, 2009*

**Math**

Mrs. I recalculated is the answer 7,549,700
*August 12, 2009*

**Math**

Mr. Sue, is the correct answer 7550 barrels?
*August 12, 2009*

**Math**

Gasoline accounts for 85% of the motor fuel consumed in the United States every day. If 8,882 thousand barrels (bbl) of motor fuel is consumed each day, how much gasoline is consumed each day in the United States? Round to the nearest barrel. I need help setting up and solving...
*August 12, 2009*

**Eth**

How well do you think Native American organizations, like the Bureau of Indian Affairs (BIA), the National Congress of American Indians (NCAI), and the National Indian Gaming Association (NIGA), are helping Native Americans to advance?
*August 10, 2009*

**com 140**

DQ for which week.
*August 10, 2009*

**Math**

How many hours of jogging at 5 mi/h would be needed for a 200-pound person to lose 5 pounds? (Again, assume calorie consumption is just enough to maintain weight, with no activity.)
*August 7, 2009*

**math**

what is 0.062 divde 0.1116
*July 9, 2009*

**English**

Hi there, I am doing a agrumentative essay on why 'Armed Police Officers' shouldn't be in our schools. But i am having trouble coming up with arguments for my three paragraphs. Any ideas? Could you also direct me to any useful sites, opinions, articles and stats on...
*May 9, 2009*

**algebra**

12f-15+3+16f=-2f-12+20
*March 8, 2009*

**Math**

What is the only quadalateral to have a 45 degree angle?
*January 28, 2009*

**math**

negative 1 multiplied by .5 divided by .5=
*January 25, 2009*

**social studies**

thanx so much
*January 19, 2009*

**social studies**

3 major roads and cities in okanogan county ????????????!!!!!!!
*January 19, 2009*

**Biology**

What are some organisms that are selectively breed to have specific characteristics?
*October 21, 2008*

**12th grade Physics**

How fat must a mortar be shot to reach a target that is 800 meters fromthe base of the cliff?
*October 12, 2008*

**spanish**

would i put ser, estar, somos, or estamos in front of sentandonos en el arbol
*September 27, 2008*

**math**

How much does it cost to send a 1 lb package to Italy?
*September 1, 2008*

**biology**

What part of the cell controls our heredity?
*June 12, 2008*

**Science**

Sucrose and glucose contain the elements carbon, oxygen, and hydrogen. What kind of elements are these?
*March 14, 2008*

**science**

im a series of tubes found through out the cell i transport proteins and other things as well what am i
*January 10, 2008*

**HELP!**

Scientists throrize that the continents are still drifting apart. What will be the eventual position of North America with respect to Eurasia?
*January 6, 2008*

**Social studies Egypt**

Who controlled all aspects of Egyptian life during the Old Kingdom?
*November 4, 2007*

**social studies egypt**

Ramses II had many, many monuments and statues bulit for himself. True or False?
*November 4, 2007*

**Social Studies Egypt**

Egypt : New Kingdom Three areas conguered by Egypt diring the New Kingdom were: 1. 2. 3.
*November 4, 2007*

**Social studies**

During the New Kingdom, through what two ways did Egypt's empire become larger and wealthier?
*November 4, 2007*

**math**

A stereo system is marked down from $450 to $382.50. What is the discount rate?
*October 4, 2007*

**social studies**

what are the regional and human-inviroment interactions for Africa?
*September 30, 2007*

**Social Studies**

What are the five themes of geography for Africa?
*September 29, 2007*

**GRADE 12 PHYSICS AGAIN**

it has been 2 hours, can't someone please help me? I need to know if what I did was right, I think it is wrong and one of the numbers is supposed to subtracted instead of added. 2.44(t+1)^2 = 2.44 (t^2-2t-1) d=2.44t^2-4.88t+2.44 & then 1.83t^2=2.44t^2-4.88t+2.44 0=0.61t^2-...
*September 12, 2007*

**physics Again**

bobpursley can you please check my reply to your post about my question? I am not sure if I did my equation correctly. Thanks
*September 12, 2007*

**English**

try searching that wiki(pedia) or google
*September 12, 2007*

**Grade 12 Physics**

CAN SOMEONE PLEASE HELP ME WITH MY QUESTION I AM REALLY STUCK!!!!! SOMEONE ANYONE!! I need some help, my brain hurts already just over analyzing this question! [_] [_]Thanks! [_]
*September 12, 2007*

**Grade 12 Physics**

mhm ok so is this what the equation should look like (before I use quadratic equation)? 4.88/2= 2.44 2.44(t+1)^2 = 2.44 (t^2-2t-1) d=2.44t^2-4.88t+2.44 (3.66/2=1.83) 1.83t^2=2.44t^2-4.88t+2.44 0=0.61t^2-4.88+2.44 I am not even sure how I did the top one before placing it into ...
*September 12, 2007*

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