Thursday

September 18, 2014

September 18, 2014

Total # Posts: 59

**Physics**

A ball is thrown vertically upward from the ground with a speed of 36.0 m/s.Suppose the acceleration of gravity were only 2.00 m/s^2 instead of 9.80 m/s^2 a)At what time does it have a velocity of 12.0 m/s upward? b)At what time does it have a velocity of 12.0 m/s downward? c)...
*September 6, 2014*

**Calculus**

Two automobiles start from a point A at the same time. One travels west at 60km/hr and the other travels north 35 km/hr. how fast is the distance between them increasing 3hr later?
*August 31, 2014*

**Economics **

Difference of fair work act 2009 and australian pay and conditions standard. Thank you
*May 6, 2014*

**social studies**

What did the Ottomans demand from the Treaty of Sevres and Lausanne ?
*March 30, 2014*

**English**

What's the word with the meaning : A strange habit or characteristics that is seen as not important and not harming anyone. I am doing a pre-PSAT crossword puzzle and the word ends with e. Thank you!
*October 13, 2013*

**Physics**

An object is launched horizontally with a velocity of 12 m/s. What is the vertical component of velocity after 2s? What are the coordinates of the object after 4s?
*September 24, 2013*

**Physics; help please :)**

A car A moves to the left with speed 40 km/h(with respect to the road). Another car (B) moves to the right with speed 60 km/h (also with respect to the road). Find the relative velocity of B with respect to A.
*September 24, 2013*

**English**

What is the meaning of Ethics of Plagiarism?
*September 22, 2013*

**Physics; help please :)**

A transverse wave is observed to be moving along a lengthy rope. Adjacent crests are positioned 2.4m apart. Exactly six crests are observed to move past a given point along the medium in 9.1 seconds. Determine the wavelength, frequency and speed of these waves. tHank you :)
*September 4, 2013*

**Physics; help please :)**

Two wires made of the same material of density 7240 kg/m3 and having the radius in the ratio 1:2 but the same length 1.54 connected together and stretched by a force of 540 N. If the speed of a transverse wave through the thinner wire is 3600 m/s, calculate the wave velocity ...
*September 4, 2013*

**Chemistry :)**

How does intermolecular force of attraction is responsible for a change of state?
*August 24, 2013*

**Business Studies**

Difference in Buying an Existing Business VS Starting from Scratch VS Buying a franchise? Thank you! :)
*August 23, 2013*

**Chemistry**

How does intermolecular force of attraction is responsible for a change of state?
*August 23, 2013*

**chem**

calculate the concentration of all ions present in 58.7 mg NH4Br in 500 mL of solution
*April 11, 2013*

**1301 history**

To flee religious prosecution to discover eldorado Economic migrants
*September 23, 2012*

**physics**

A point charge with a charge of q1=2.60uC is held stationary at the origin. A second point charge with charge q2=-4.70uC moves from the point. x=0.140m, y=0 to the point x=0.230m, y=0.290m How much work is done by the electric force on q2?
*February 22, 2012*

**maths**

The Double of a number is greater by 48 than its half. find the number.
*December 14, 2011*

**physics**

A rolling ball moves from x1 = 3.2 cm to x2 = -4.4 cm during the time from t1 = 3.4 sec to t2 = 6.2 sec. What is its average velocity?
*October 9, 2011*

**Biology**

Please help. Assume that a cell culture has a density of 10^8 cells/mL. You transfer 20 microliters of this culture onto the microscope slide. A) How many cells do you expect will be in this 20 microliters drop you placed under the microscope? B) You add to your sample above ...
*September 12, 2011*

**Biology**

Please help. Assume that a cell culture has a density of 10^8 cells/mL. You transfer 20 microliters of this culture onto the microscope slide. A) How many cells do you expect will be in this 20 microliters drop you placed under the microscope? B) You add to your sample above ...
*September 12, 2011*

**Biology**

Please help. Assume that a cell culture has a density of 10^8 cells/mL. You transfer 20 microliters of this culture onto the microscope slide. A) How many cells do you expect will be in this 20 microliters drop you placed under the microscope? B) You add to your sample above ...
*September 12, 2011*

**Biology**

Please help. Assume that a cell culture has a density of 10^8 cells/mL. You transfer 20 microliters of this culture onto the microscope slide. A) How many cells do you expect will be in this 20 microliters drop you placed under the microscope? B) You add to your sample above ...
*September 12, 2011*

**Biology**

Assume that a cell culture has a density of 10^8 cells/mL. You transfer 20 microliters of this culture onto the microscope slide. How many cells do you expect will be in this 20 microliters drop you placed under the microscope?
*September 11, 2011*

**Physics (please help!!!!)**

Thanks!!
*April 1, 2011*

**Please I really need help with this problem!!!**

I thought it was A and B but I was not right...
*April 1, 2011*

**Physics (please help!!!!)**

An artillery shells is moving on a parabolic trayectory, when it explodes in midair. The shell chatters into a very large number of fragments. Which of the following statements is true? (Select all that apply.) A) A center of mass of the system of fragments will contitnue to ...
*April 1, 2011*

**Physics...help please!**

An artillery shells is moving on a parabolic trayectory, when it explodes in midair. The shell chatters into a very large number of fragments. Which of the following statements is true? (Select all that apply.) A) A center of mass of the system of fragments will contitnue to ...
*April 1, 2011*

**Physics**

An artillery shells is moving on a parabolic trayectory, when it explodes in midair. The shell chatters into a very large number of fragments. Which of the following statements is true? (Select all that apply.) A) A center of mass of the system of fragments will contitnue to ...
*April 1, 2011*

**Physics...help please!**

An artillery shells is moving on a parabolic trayectory, when it explodes in midair. The shell chatters into a very large number of fragments. Which of the following statements is true? (Select all that apply.) A) A center of mass of the system of fragments will contitnue to ...
*March 31, 2011*

**Chemistry (pleas help!)**

a stressed chemistry student is hyperventilating into a paper bag. The student stops to wip his brow after a few breaths, and the bag is at 5.7 KPa and the temperature in the lecture hall is 24 degrees C. The bag is 0.75 L full. The student then goes at it again, and ...
*March 24, 2011*

**Chemistry (please help!!)**

That's the equation I use use and I get 594 K... I think that's a really high value, is that answer right?
*March 23, 2011*

**Chemistry (please help!!)**

Do I not need to turn the temperature to Kelvin for the equation?? If I don't turn it to K I get 49 C... which is a more reasonable value... I left the other values with their same units... please someone answer...
*March 23, 2011*

**Chemistry (please help!!)**

My answer is 594 K... which is excessively high...
*March 23, 2011*

**Chemistry (please help!!)**

a stressed chemistry student is hyperventilating into a paper bag. The student stops to wip his brow after a few breaths, and the bag is at 5.7 KPa and the temperature in the lecture hall is 24 degrees C. The bag is 0.75 L full. The student then goes at it again, and ...
*March 23, 2011*

**Physics (please help!!)**

Analyze the flight of a projectile moving under the influence of gravity (mg) and linear, i.e., laminar-flow drag (fD = -bv), with b constant). Neglect (phase I); assume the projectile is launched from mthe origin at speed v1 and angle theta1 above the horizontal. WARNING: ...
*March 7, 2011*

**Physics (please help!!)**

Analyze the flight of a projectile moving under the influence of gravity (mg) and linear, i.e., laminar-flow drag (fD = -bv), with b constant). Neglect (phase I); assume the projectile is launched from mthe origin at speed v1 and angle theta1 above the horizontal. WARNING: ...
*March 7, 2011*

**writing**

What is the easiest format for a research paper
*February 22, 2011*

**Calculus Please Help**

Forget it... it's 2.. don't know why I thought it was -3 thanks anyways...
*February 21, 2011*

**Calculus Please Help**

Given the numerical values shown for the function f(x), find approximate values for the derivative of f(x) at each of the x-values given. x= 0 1 2 3 4 5 6 7 8 f(x)= 13 15 16 17 17 14 11 9 7 f'(x)= 2 1 1 1 0 -3 -3 -2 -2 What seems to be the greatest rate of change of f(x)? ...
*February 21, 2011*

**Chemistry**

THank you Dr. BOb, I got 22.18, thank you thank you for sharing your knowledge, you helped out my roommate and I.
*February 23, 2010*

**Chemistry**

I dont understand how to calculate the final temperature, can anyone help. thank you
*February 23, 2010*

**Chemistry**

calculate the final temperature (once the ice has melted) of a mixture made up of initially of 75.0mL liquid water at 29 degrees Celsius and 7.0 g of ice at 0.0 degrees Celsius
*February 23, 2010*

**Science**

Okay. Yes, it must have been other kids with similar worksheets or something. Well, thanks. :)
*September 22, 2009*

**Science**

Also, I'm pretty sure Aaron's words are correct... they seem to fit. Thanks! Anyway, it is 8th grade physical science and we're learning about the scientific method.
*September 22, 2009*

**Science**

I haven't posted this question several times, so unless I accidentally pressed send a few times, it must be other students in my class.
*September 22, 2009*

**Science**

There are two fill-in-the-blank questions that I can't find the missing word. If you could be of any help, I'd appreciate it. :) #1. The ____ describes the steps you use during an experiment. #2. Sometimes scientists make a mistake, or ____, and need to do an ...
*September 22, 2009*

**Geometry**

What is an equation I can use to find the sum of the first 1000 counting numbers? I have been trying to find out how to figure out this problem, but can't find it my notes. Thanks in advance. :)
*September 21, 2009*

**Physical Science**

There are two more terms I need: "displacement" and "derived quantity". I know what displacement is but can't find a good definition for it, and I do not know what derived quantity is. If you can give me a definition or a link to a definition, that ...
*September 14, 2009*

**Physical Science**

What does "standard unit equivalent" mean? I tried googling the term, but could not find any good results. Thanks in advance for your help. :)
*September 14, 2009*

**Geometry**

One pattern on my worksheet has angles. The first is 90 degrees, 135 degrees, then 157.5 degrees. I don't really see any pattern. Could anyone help me with this? Thank you so much. :)
*September 10, 2009*

**Geometry**

Using your calculateor, look at the successive ratios (of the Fibonacci sequence) of one term to the next. Make a conjecture. I don't exactly get what the questions asking. I tried listing the ratios, but I really didn't see any pattern. Thanks in advance. :)
*September 10, 2009*

**Thanks! :)**

:D
*September 10, 2009*

**Geometry**

Name two different ways to continue the pattern. 48, 49, 50. I obviously know 51 could be an answer, but can't figure out a second way the pattern could be continued. Any help would be appreciated. :)
*September 10, 2009*

**Math- Algebra**

ABSOLUTE VALUES that have to get graphed. g(x) = | -x - 3 | f(x) = | x + 2 | + 3 g(x) = | 2x - 3| +1 can you help me do these? and show the steps?
*April 24, 2009*

**science**

Which kind of yeast ,young or old, is bigger? And why?
*November 1, 2008*

**science**

pls. give me an acrostic for the word " "science"
*June 11, 2008*

**maths**

solve this equation;5t(6 times 10 neg.3)=(6 times10neg -2) does it look like this: t =variable 5t(6 X 10 - 3) = 6 X 10 - 2 are there any parenthesis missing? If you have only t that means it wants you to solve for the varible t.
*June 19, 2007*

**the big idea of energy**

i think you well don!
*December 5, 2006*

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