Sunday

February 7, 2016
Total # Posts: 315

**physics**

The membrane that surrounds a certain type of living cell has a surface area of 4.50 × 10-9 m2 and a thickness of 1.00 × 10-8 m. Assume that the membrane behaves like a parallel plate capacitor and has a dielectric constant of 5.3. The potential on the outer ...
*February 2, 2016*

**physics **

Starting from rest, a 10kg suitcase slides down a 3.00m long ramp inclined at 30 degrees from the floor. The coefficient of friction between the suitcase and the ramp is 0.35. 1) what net force is applied to the suitcase while it is on the ramp? 2)what is the change in the ...
*December 13, 2015*

**physics**

.165
*December 2, 2015*

**Math - 3rd grade**

thanks!
*October 27, 2015*

**Math - 3rd grade**

Mr. Thomas travel 20miles each week to and from work. If he works 5 days a week, how many miles does Mr. Thomas travel each day to go to work? Does this mean 20miles total for the week or that it should be 40miles total(20 miles to + 20 miles from)? 20miles/5days = 4 miles/day...
*October 27, 2015*

**Physical Science**

Did this yesterday. With 270 kPa being half of 540 kPa I got an answer of two and the teacher marked it correct
*October 20, 2015*

**Math**

24,87.67+ ? into the nearest dollar
*October 13, 2015*

**3rd grade math**

thanks!
*September 3, 2015*

**3rd grade math**

1. What is 47 and 52 rounded to nearest hundred? answer: both 0?
*September 3, 2015*

**3rd grade math**

thank You.
*September 1, 2015*

**3rd grade math**

What is the value of the underlined digit? $2.29 (9 is the underlned digit). My teacher said it's not the ones place. How do i figure it out?
*September 1, 2015*

**physics**

three 80 gram weights are suspended at 32 cm 43 cm and 76 cm of a uniform meter stick. if the stick is made to rotate at its midpoint where must the 4th 80 gram weight be suspended to attain equilibrium? please and thank you
*August 31, 2015*

**physics**

Guys help with my physics please!!! Four 40-gram weights are suspended at the 13-cm 21-cm 35-cm and 74-cm marks of a uniform meter stick.if the stick is supported at the mid point what load must be suspended at the 82 cm mark to attain equilibrium please explain to me how
*August 31, 2015*

**Statics**

If both the projection Pa and component Fb of the force F are 250 N, determine the magnitude of the resultant F and the orientation theta of the b-axis. There is a 34 degree angle from the resultant force to the a-axis. There is a 4 degree angle from the resultant force to the...
*August 27, 2015*

**Pre Calculas**

A man who can row in still water at 3 mph heads directly across a river flowing at 7 mph. At what speed does he drift downstream?
*May 12, 2015*

**Chemistry**

Copper has a specific heat of 0.387 J/g·°C. How much energy is required to raise the temperature of 460. g of copper from 34.5°C to 232.0°C?
*May 6, 2015*

**Math problems**

a farmer plants .6 0f a field with peanuts. the field is 5.6 acres in size. how many acres are planted with peanuts
*February 1, 2015*

**Civics**

@Ms. Sue is it A?
*January 12, 2015*

**Math**

A cake recipe requires 2 cups of milk.How many batches can be made using 2 gallons?
*January 8, 2015*

**Geometry**

I have four questions: 1. The area of trapezoid ABCD is 60. One base is 4 units longer than the other, and the height of the trapezoid is 5. Find the length of the median of the trapezoid. 2. In trapezoid ABCD, line BC is parallel to line AD, angle ABD = 105 degrees, angle A...
*December 6, 2014*

**Chemistry**

Calculate the S(univ) for the following phase change at 25 deg celcius. The boiling point of heptane is 98.0 Celcius and has a Delta Hvap= +21.6kj/mol. C7H16(l)--> C7H16(g) Delta S= +79.0j/k I know that the equation is Delta Suniv= DSsys + DSsurr PLEASE SOMEONE HELP ME WITH...
*November 24, 2014*

**Chemistry**

Calculate the S(univ) for the following phase change at 25 deg celcius. The boiling point of heptane is 98.0 Celcius and has a Delta Hvap= +21.6kj/mol. C7H16(l)--> C7H16(g) Delta S= +79.0j/k I know that the equation is Delta Suniv= DSsys + DSsurr PLEASE SOMEONE HELP ME WITH...
*November 22, 2014*

**la**

At the end of her aunt's story in “The Story-Teller," the older girl asks whether the girl in the story would have been rescued even if she had not been good. what does she seem to think is the theme of her aunts story? what detail in the aunt's story leads ...
*November 6, 2014*

**physics**

A uniform rod is set up so that it can rotate about a perpendicular axis at one of its ends. The length and mass of the rod are 0.849 m and 1.17 kg. What constant-magnitude force acting at the other end of the rod perpendicularly both to the rod and to the axis will accelerate...
*October 28, 2014*

**science**

How are Newton’s second and third laws of motion important to your everyday life?
*October 24, 2014*

**la **

While Cyril is smacking the seat cushions, his aunt invites him to look out the window. What can you infer from these two details in "The Story-Teller"? The aunt is trying to distract Cyril and get him to behave. The aunt is punishing Cyril for his bad behavior. The ...
*October 21, 2014*

**la**

i was wondering do you have any ideas on how to start writing my answer
*October 20, 2014*

**la**

At the end of "Raymond's Run," Squeaky has a different attitude about running and about her rival, Gretchen. Describe the actions that demonstrate these changed feelings. What role does conflict play in Squeaky's changed attitude? Use events and details from ...
*October 20, 2014*

**sj hig**

-53.9-(19.4)
*October 13, 2014*

**ECT**

ECT = Electronic Control Tech aka robotics So i need to make a project and i dont know what to make - not really homework but still please help me out.
*September 11, 2014*

**Science**

thanks
*May 27, 2014*

**Sociology**

Thank you very much
*April 12, 2014*

**Sociology**

If Andrea's parents have her take violin lessons, take a foreign language and attend science camp in hopes of her developing skills so she can get into a competitive college, is that an example of human capital or cultural capital? I was leaning towards human capital but ...
*April 12, 2014*

**Algebra - Help!**

Given the function: f(x)=(x^2+6x+5)/(x^2+3x−10) Find the Domain: Vertical asymptote(s): Hole(s): Horizontal asymptote (if exists):
*April 7, 2014*

**Quadratic Functions in Algebra**

Suppose C(x)=x^2−6x+20 represents the costs, in hundreds, to produce x thousand pens. How many pens should be produced to minimize the cost? What is the minimum cost? Number of pens to minimize cost: Minimum Cost:
*March 18, 2014*

**Physics**

A .75kg block is going at a velocity of 1.5m/s and moves on a frictionless surface. Then all of a sudden, the block hits a rough patch. The rough patch is .5m long and has a coefficient of friction of .25. Then it slides onto the frictionless surface again. The mass then ...
*March 16, 2014*

**math **

solve the following r/15 >-3 a r>-45 b r>-15 c r > 12 r > 45
*January 28, 2014*

**math**

Solve the inequality.- **C + 6 < –20** (A.) c < –26 (B.) c < –14 (C.) c < 26 (D.) c < 14 **D/13≥ –3** (A.) d ≥ –16 (B.) d ≥ 39 (C.) d ≥ 10 (D.) d ≥ –39 **–3p > –48** (A.) p < 16 (B.) p &...
*January 28, 2014*

**math**

The cost of refreshments (in dollars) is a function, h, of the number of people served, n. If h(n)=100/9n, find the number of dollars it would cost for refreshments for 27 people.
*December 4, 2013*

**Phsycis/Math (please help)**

Two blocks are connected by a string over a frictionless, massless pulley such that one is resting on an inclined plane and the other is hanging over the top edge of the plane. The inclined plane is inclined at an angle of 37 degrees. The hanging block has a mass of 16.0 kg, ...
*November 20, 2013*

**Math**

How many integer palindromes are between 10,000 and 70,000 and how many of those are even?
*November 19, 2013*

**Math Word Problem**

During the summer throughout high school and for a year after, Lewis worked as a lifeguard at the beach. In that 5-year period, he saw a total of 461 dolphins swimming in the distance. About how many did Lewis spot per summer in the 5 summers he worked?
*October 10, 2013*

**algebra**

find the root i know this answer should be 4 but how do i arrive there can someone show me how to do this please X+16/x=8
*October 8, 2013*

**Math Exponents **

A closet has a volume of 5^3 cubic feet. Which of the following is equal to 5^3? A.)15 B.)25 C.)125 D.)243
*October 7, 2013*

**MATH - URGENT!!!**

Were you able to get an answer? I got 76, but I know it is wrong.... I just can't find anymore.
*October 6, 2013*

**MATH - URGENT!!!**

Were you able to get an answer? I got 7, but I know it is wrong.... I just can't find anymore.
*October 6, 2013*

**Math Explanation**

Explain what 4 raised to the fourth power means.
*October 3, 2013*

**Math Word Problem**

The Mesozoic Era began about 250,000,000 years ago. The Palezoic Era began 292,000,000 years before that. How long ago did the Palezoic Era Begin? A. 42,000,000 Years B. 492,000,000 Years C. 542,000,000 Years D. 556,000,000 Years
*September 24, 2013*

**Math Word Problem**

Stefany ran 2 miles each day for 14 days. How many miles did she run in 14 days? Explain two different ways to solve this problen, and then solve
*September 23, 2013*

**us history**

1-Name the first president to die in the office (while president) my answer is William Henry Harrison do you agree ?
*May 16, 2013*

**us history**

1-which president was a bachelor,he never married in his life -James Buchanan 2-which state of the U.S was its own country can you help me
*May 16, 2013*

**us history**

my answer is William Henry Harrison do you agree ?
*May 16, 2013*

**us history**

I am not sure if William Henry Harrison was the first president to die in office (while president)
*May 16, 2013*

**us history**

Name the first president to die in office (while president). help?
*May 16, 2013*

**us history**

1-Which state's capital is Springfield? 2-The oldest city in the U.S.is in which state? 3-Name the three state capitals which are named after a president. answers 1-Illinois 2-Saint Augustine, Florida •3-Lincoln, for Abraham Lincoln -Madison, Wisconsin for James ...
*May 16, 2013*

**CHEM**

An isotope has a half life of 56 days. It now has 10,000DPM/ml. What will its activity be 100 days from now?
*April 17, 2013*

**physics**

Use the potential energy and momentum. mommentum = mass times velocity So 2kg x 60m/s Take that answer and set it equal to the formula for potential energy. This works because when the rocks velocity is zero all the energy will be converted from kinetic energy to potential ...
*March 23, 2013*

**math**

Ms. Sue thank you for all your help your the best!!!!!
*March 15, 2013*

**math**

now I am really not sure I am going to guess and hope it's right b or c?
*March 15, 2013*

**math**

what expression can be used to represent the phrase "3 more than 2 times the number of minutes, m"? a.3m+2 b.2m+3 c.m+3x2 d.2m-3 I think it may be A?
*March 15, 2013*

**math**

Oh that was easier than I thought, it would be $176. Thank you
*March 15, 2013*

**math**

The community is having a book sale to raise money for a new computer. The library sells each book for $4.00. complete the table, where b represents the number of books sold. How much money will the library earn if b=44? b 4b 40 160 44 ? 50 200 I don't know?
*March 15, 2013*

**math**

Marco's goal is to eat only 2,000 calories each day. One day for breakfast he consumed 310 calories, for lunch he consumed 200 more calories than breakfast, and for dinner he consumed 800. Did he make his goal? I added 310+510=810+800 and got 1,610 not sure if this is done...
*March 14, 2013*

**math (pemdas)**

3*3 multiplied by 4+12= I did this but not sure that it is right 3x3x4+12 9x4+12 36+12=48
*March 12, 2013*

**Math**

How do u graph an inequality
*March 11, 2013*

**Math**

The freezer is always less than 6 degrees Fahrenheit write an inequality for the temperature t in degrees. Graph the inequality
*March 11, 2013*

**math**

Ok Thank you Randy :)
*March 10, 2013*

**math **

which expression mean "3 times a number h"? A. 3 x h B. 3 - h C. 3 + h D. 3 divided h I am thinking it is A but not sure?
*March 10, 2013*

**math**

It is C I feel silly I should have known this right off the bat
*March 7, 2013*

**math **

which expression stands for "32 more than a number d" ? A. 32 x d B. 32- d c. 32 + d d. 32 divided by d I am not sure?
*March 7, 2013*

**4th grade Algebra**

thank you Dr. Jane :)
*March 7, 2013*

**4th grade Algebra**

Evaluate the expression 15 - n when n= 9 I am not sure but is it 6?
*March 7, 2013*

**4th grade Algebra**

thank you
*March 6, 2013*

**4th grade Algebra**

What is another way to write the expression 44n? What is another way to write the expression 44 divided by n?
*March 6, 2013*

**English**

Ok Thank you Danni and Miss Sue
*March 1, 2013*

**English**

That is what I put I wasn't sure that overdo was a word. Thank you for all your help
*March 1, 2013*

**English**

Be careful not to overdue the hot spices! What changes should be made? change overdue to overdo insert comma after hot change exclamtion point to a question mark?
*March 1, 2013*

**English**

thank your Danii :)
*March 1, 2013*

**English**

Revising and Editing It is not only quick and easy to make but it also tastes good and is fun to eat. What changes should be made in this sentence? Insert a comma after make? Change good to well? or insert a comma after fun?
*March 1, 2013*

**Chemisty**

the answer is 30.1 grams magnesuim chloride but i dont kknow how to get to the answer
*February 24, 2013*

**Chemisty**

195 g of water containing magnesium chloride boils at 102.5 celcuis. what mass of salt is needed?
*February 24, 2013*

**Chemisty**

250g of water containing sucrose freezes at -3.5C. What is the molality of the solution?
*February 24, 2013*

**math**

oh yeah marsha, Sara, Juan and Melissa
*February 22, 2013*

**math**

so Juan, Melissa then marsha?
*February 22, 2013*

**math**

Melissa and her friends are stretching rubber bands for an activity in class. Melissa stretched her elastic to 10 inches. Juan stretched it 3 1/2 times as far. Sara stretched it 4/4 as far. Marsha stretched it 2/5 as far. Put the students in order of how far they stretched ...
*February 22, 2013*

**math**

I have to put these in order from greatest to least without multiplying? 6x 2/5, 3 2/3x 2/5, 2/7x2/5, 2/2x2/5 I think this is correct the way it is am I right?
*February 22, 2013*

**word problem**

thank u steve
*February 15, 2013*

**word problem**

Millwood city is constructing a new highway through town. The construction crew can complete 5 3/6 miles of road each month. The total new highway will be 54 miles long. Will the highway be finished in 8 months? I know that 36 2/5 miles of highway can be completed in 6 1/2 ...
*February 15, 2013*

**math**

it does
*February 15, 2013*

**math**

Algebra write a mixed number for p so that 3 1/4 x p is more than 3 1/4= I was not sure I was thinking 2 2/3?
*February 15, 2013*

**math**

thank you
*February 15, 2013*

**math**

ok I got 10.4?
*February 15, 2013*

**math**

3/4 x 2 2/3 x 5 1/5= 3/4 x 8/3 x 26/5= 624/60 what do I do from there?
*February 15, 2013*

**math**

good question? I just did it again and came up with the answer you did. Thank you Steve
*February 14, 2013*

**math**

1 4/5 x 1 1/3 x 1 3/4=720/48 then I get 15 not sure it that is correct?
*February 14, 2013*

**math**

thank you
*February 14, 2013*

**math**

multiplying mixed numbers 4 3/5 x 2/3= 23/5 x 2/3= 46/15? I am not sure it this is right I know that I can't simplify it, so I am thinking that it is 46/15
*February 14, 2013*

**physics**

a 5-kilowatt source powers a motor that is lifting a 30 kg mass straight up. how far will the mass move in 6 seconds
*February 12, 2013*