Saturday

June 25, 2016
Total # Posts: 1,232

**Physics**

what propels a rocket away from the surface of the earth?
*November 14, 2010*

**Physics**

what propels a rocket away from the surface of the earth?
*November 14, 2010*

**Physics**

does a baseball thrown at 100 miles per hour have a lot of force?
*November 14, 2010*

**Physics**

is a collision an example of an interaction?
*November 13, 2010*

**Physics**

Which of the following forces does NOT have a zero work done on the object. Choices The normal force on a box that slides across a horizontal level floor. The weight on a box that slides across a horizontal level floor. The normal force on a box that slides down an inclined ...
*November 11, 2010*

**physics**

A person bends over, and lifts an object of mass m = 28.5 kg while keeping the back parallel with the floor. The muscle that attaches 2/3 of the way up the spine maintains the position of the back. This muscle is called the back muscle or latissimus dorsi muscle. The angle ...
*November 11, 2010*

**2nd grade**

it is greater than 43 less than 52 if you add digits the sum is 8 write the number word
*November 11, 2010*

**12th grade Trig**

What are the period and 2 consecutive asymptotes? 1. y= -3tan pi x 2. y= 2 sec 4 x 3.y= csc x/3 4.y = 3cot pi x/3
*November 10, 2010*

**math**

the next three terms are 70,87,106. the pattern is adding consecutive odd numbers to each term. ex: 15+7=22, 22+9=31, 31+11=42, 42+13=55 and so on.
*November 10, 2010*

**4th grade math**

either 3,344 or 3,322
*November 9, 2010*

**Physics**

Please help! How long would it take (in seconds) to travel 1 km at a speed of 100 km/h?
*November 9, 2010*

**4th grade math**

1001 or 999
*November 9, 2010*

**Math**

convert both of them to improper fractions and multiply them normally.
*November 9, 2010*

**4th grade**

Either 45 or 54
*November 9, 2010*

**Physics**

How long would it take (in seconds) to travel 1 km at a speed of 100 km/h?
*November 9, 2010*

**Physics**

A roller-coaster vehicle has a mass of 506 kg when fully loaded with passengers (see figure). (a) If the vehicle has a speed of 22.0 m/s at point A, what is the force of the track on the vehicle at this point? (b) What is the maximum speed the vehicle can have at point B in ...
*November 4, 2010*

**Physics**

point A, r=10m and point B, r=15m
*November 4, 2010*

**Physics**

A roller-coaster vehicle has a mass of 506 kg when fully loaded with passengers (see figure). (a) If the vehicle has a speed of 22.0 m/s at point A, what is the force of the track on the vehicle at this point? (b) What is the maximum speed the vehicle can have at point B in ...
*November 4, 2010*

**Math**

Light travels at a speed of about 186,000 miles per second. Sound travels at a speed of about 1,087 feet per second. How many times faster light travels than sound.
*November 3, 2010*

**english**

sometimes i be so tired can't nobody wake me up.
*November 1, 2010*

**Chemistry**

In a gas expansion, 69 J of heat is absorbed from the surroundings, and the energy of the system decreased by 118 J. Calculate the work done. _______ J
*October 31, 2010*

**chemistry**

If 150.0 f of sulfuric acid is spilled, what is the minimum number of moles of sodium carbonate have to be added to complete reaction
*October 30, 2010*

**poetry part 1**

nature
*October 28, 2010*

**math**

okay but I thought when it was traslated over the yaxis that the negitive went insixde the (-) not ouside like so -()
*October 28, 2010*

**math**

Square root of x is the equation. Translate: down seven reflected over y axis left five ANSWERS: square root of negitive x+5)-7 negitive square root of x+5)-7 square root of x-5)-7 square root of x+5)+7 IM not getting any of these HELP!!!
*October 28, 2010*

**Pre Calc!!!!!!!!!! test tom!!**

Square root of x is the equation. Translate: down seven reflected over y axis left five ANSWERS: square root of negitive x+5)-7 negitive square root of x+5)-7 square root of x-5)-7 square root of x+5)+7 IM not getting any of these HELP!!!
*October 27, 2010*

**Physics**

Well I saw on a related problem someone wrote: Package height Y at drop time t is Y = 120 + 5 t - 4.9 t^2 Set Y = 0 and solve. but I have no idea what that means...
*October 24, 2010*

**Physics**

For some reason I keep getting this problem wrong. Please Help! A helicopter is ascending vertically with a speed of 9.00 m/s. At a height of 90 m above the Earth, a package is dropped from a window. How much time does it take for the package to reach the ground?
*October 24, 2010*

**math**

-2(x+3)=-24
*October 24, 2010*

**Chemistry**

Determine the mass of zinc sulphide, Zns which is produced when 6.2 g of zinc and 4.5 g of sulphur are reacted. My answer was 9.26 grams of zinc sulphide are produced. I wanted to verify if this was right. Please let me know. Thanks.
*October 19, 2010*

**CHEMISTRY**

You subtract the moles of NaoH from the moles of HCl to determine the excess moles left, which decides the pH. To find pH, pH= -log(concent. of H+) or ( concen. of OH-) If NaOH is more than HCl, you get find pH by subtracting the pOH you get from the above formula from 14.
*October 17, 2010*

**Foods**

This item also cooks vegetables and fruits so I don't think its a blender. Thanks anyway!
*October 17, 2010*

**Foods**

what cooking tool is used to make sauces which do not contain milk? I know I have asked this question already but I have still not a found very good answer. The sites that people have gave me are not helping infact they are just showing me how to cook sauce or other stuff, not...
*October 17, 2010*

**Foods**

Thank you very much for helping me Ms.Sue, BobPursley and Writeacher. Thanks!!:):):):):):):):):):):):)
*October 16, 2010*

**Foods**

I think I have mostly all the answers to my questions though I don't know if they are right. Any ways my last question is: what is used to cook vegetables and fruits, and to make sauces which do not contain milk? Please try to answer my other questions as well. I do not ...
*October 16, 2010*

**Foods**

I clicked the site and all it showed me was a picture. why? Can you please just list me the items I need, and not give me any sites. It will be very helpful.
*October 16, 2010*

**Foods**

I am pretty sure #5 is a pasrty blender and #4 is a grater. Am I right? I checked the site you gave me but I couldn't find anything- it was a bit difficult for me. Please help me I beg you!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
*October 16, 2010*

**Foods**

I have no choices. Answers I have: 1.rolling pin 2.sauce pan 3.metal spatuala 4.paring knife 5.? 6.? 7.? 8.?
*October 16, 2010*

**Foods**

what is used to knead dough and to roll pastry ? what is used to cook some less tender meats,to steam puddings and to asselerate the cooking time of foods? what is used to sift flour before measuring? what kind of knife is used to very finely slice or crumb foods? what is used...
*October 16, 2010*

**math**

the awnser to h+5h=48 is 44
*October 14, 2010*

**5th grade English**

yes it does
*October 14, 2010*

**physics**

hello, I need some help with this work problem that goes... If the height of a helicopter above the ground is given by h=3.25t^3, where h is in meters and t is in sec. After 1.50s, the helicopter releases a small mailbag. How long after its release does the mailbag reach the ...
*October 5, 2010*

**physics**

a = (deltav)/t = (d/t)/t =(400/10) / 10 =4m/s :)
*October 3, 2010*

**Maths - trig**

Solve 3cos2x - 7cosx = 0, when 0<=x<=360 And also, find the exact values for x when 0<=x<=360 if 3tan^2x=1 Thankyou!
*October 3, 2010*

**physics**

Devon : a = F / m Effective F = upward force - downward force (weight) = 11- 15.5 = 4.5 downward a = 4.5/ (15.5/9.8) = 2.8 m/s downwards. (I'm pretty sure anyway)
*October 3, 2010*

**physics**

Yes if the upward force is less than gravitythen the acceleration would be downward, but it wouldn't be negative as it's not a deacceleration. :)
*October 3, 2010*

**Chemistry**

Balance the eqn Na2CO3 + 2HCl -> 2NaCl +H20 + CO2 From the balanced eqn you can see that one mole of CO2 is produced. Then at stp 1 mole of gas takes up 24 litres (I think, check this on google) therefore v= 24 litres. :)
*October 3, 2010*

**PIs 267**

How much work is need to raise a 110 kg loag of bricks 12m above the ground
*September 29, 2010*

**geometry**

Solve the equation for x. -5x = 3 + y is it x = (3+y)/-5
*September 29, 2010*

**Math**

wait there is no x after the seven its just 3x + 23 = 7 so x = ?what?
*September 29, 2010*

**Math**

If triangle XYZ is equilateral and the length of one side is 7.5, what is the perimeter of XYZ and what is the measure of each angle?
*September 29, 2010*

**Math**

Soda comes in packs of 6. Candy comes in 4 bags per pack. What is the least number of each pack (Soda and Candy) she must buy to have exactly one soda per bag of candy?
*September 28, 2010*

**6th grade, social studies**

who is discussed in the biography feature of chapter 6,lesson 1
*September 27, 2010*

**Math**

How is 3x2 different from 3 to the 2nd power ?
*September 21, 2010*

**chemistry**

You mix 2.0 mL of 0.50 M Cu(NO3)2 with 5.0 mL of 0.50 M KI, and collect and dry the CuI precipitate. Calculate the following: a) Moles of Cu(NO3)2 used b) Moles of KI used c) Moles of CuI precipitate expected from Cu(NO3)2 d) Moles of CuI precipitate expected from KI
*September 20, 2010*

**Physics**

thank you. can you help me solve another?
*September 19, 2010*

**Physics**

Two cars travel at the same constant speed. The first car travels for 10 minutes, the second for 27 minutes. If the second car travels 18 miles farther tht the first, how far does each car travel?
*September 19, 2010*

**psychology**

thanks a lot Ms. Sue, it has been a while.
*September 19, 2010*

**psychology**

Need two peer reviewed articles to help me work on those questions. below Discuss how social psychology differs from other related disciplines (e.g., clinical psychology, general psychology, sociology). Explain the main types of research approaches/methods and their role(s) ...
*September 19, 2010*

**physics**

An object with uniform motion traveled 265cm in 2.4 seconds. how much time did the object take to travel the last 50cm?
*September 19, 2010*

**algebra**

We can determine the time it would take an object to fall (if there were no air resistance) by using the formula where d is the distance. A. How long does it take a quarter dropped from a 35 foot roof to reach the ground? B. If there are 5,280 feet in one mile, how long would ...
*September 12, 2010*

**childcare**

5d,8a,13a
*September 3, 2010*

**childcare**

1b,2c,5d,8a,13a
*September 3, 2010*

**geometry**

he has a run track mind
*August 22, 2010*

**Science**

Thank you !!!!!!!!
*August 4, 2010*

**Science**

a certain plant's roots contain higher concentration of nitrate than the soil that surrounds them. Which of the fallowing mechanism explains the movement of nitrate from soil into the plant's roots? Active transport???
*August 4, 2010*

**Science**

1-B 2-B 3-C
*August 4, 2010*

**Science**

) Mare is preparing an experiment using 3 cups, one made of paper, one of plastic and one of glass. She plans on pouring 50 ml of hot water from a pitcher into each of the 3 cups and record the temperature in 5 minute intervals. What is the independent variable in this ...
*August 4, 2010*

**science**

Maria is preparing an experiment using three cups, one made of paper, one of plastic, and one of glass. She plans on pouring 50 ml of hot water into each of the three cups and recording the temperatures in 5 minute intervals. What is the independent variable in this ...
*August 4, 2010*

**science**

Maria is preparing an experiment using three cups, one made of paper, one of plastic, and one of glass. She plans on pouring 50 ml of hot water into each of the three cups and recording the temperatures in 5 minute intervals. What is the independent variable in this ...
*August 4, 2010*

**Science**

a certain plant's roots contain higher concentrations of nitrates than the soil that surrounds them, which mechanism explains the movement of the nitrate from the soil into the plant's roots? is it facilitated diffusion
*July 28, 2010*

**Quantitative Analysis**

Payoff tables are more difficult to use than decision trees when?
*July 27, 2010*

**Physic**

Brad uses a wheelchair to get in his house.which modification would make it easier for Brad to get in his house? a)increase the length of the ramp b)increase the friction between the wheels and the ramp surface
*July 26, 2010*

**Chemistry**

Below are the formulas of some hydrates. what is the mole ratio of salt to water? Hydrate Na2SO4.10H2O Co(NO3)2.6H2O Mo(NO3)2.5H2O CaSO4.2H2O (CaSO4)2.H2) Thankk you
*July 22, 2010*

**Chemistry**

A student worked with a sample of ZnSO4.7H2O, what is the stoichiometric ratio of salt to water?
*July 22, 2010*

**Chemistry**

mole ratio of Na2SO4.10H2O
*July 22, 2010*

**chemistry**

mole ratio of CaSO4.2H2O
*July 22, 2010*

**chemistry**

mole ratio of (CaSO4)2.H2O
*July 22, 2010*

**statistics**

a. 50% b. 0.84 c. 97.72%
*July 19, 2010*

**geometry**

how can i identify iif it is coplanar,collinear or neither
*July 18, 2010*

**english**

need help with tefl unit 6 the whole of it
*July 8, 2010*

**english**

identify the folowing tenses give reasons for identification. i have never met any body famous john is having a shower at the moment i go shopping at least twice a week i have been working herefor 10 years
*July 7, 2010*

**english**

How , what, and when would you correct mistakes/errors made during the following stages ENGAGE STAGE, STUDY STAGE, ACTIVATE STAGE
*June 26, 2010*

**algebra**

4(2x+y)-3(x-5)
*June 19, 2010*

**algebra**

using the quadratic formula, how do you solve 2p^2 + 16p = -2p^2 + 3?
*June 8, 2010*

**math**

The price of an antibiotic decreased from $86.25 to $52.75 for a bottle of 100 tablets. Find the ratio of the decrease in price to the original price.
*June 7, 2010*

**business**

What are some of the best practices or etiquette that should be followed when writing business e-mails. How is the Web affecting the way business is conducted? Are there changes in business practices that apply to a virtual company?
*June 7, 2010*

**ethnic studies**

what is a good definition for individual discrimination?-...... I am trying to contrast it from institutional discrimination and I am finding it to be complicated, Thanks
*June 6, 2010*

**intro to business**

No one can predict a natural disaster or world crisis. When a hurricane or flood or a pandemic strikes a country, who is most likely to respond first? Which economic system is the best solution to handling a crisis of epic proportion?
*May 21, 2010*

**race and ethnicity**

what can be the best way to explain the differences between exclusion and segregation??- Thanks
*May 20, 2010*

**english**

what are the five basic clues or signals that awriter can use yo guide readers through a peice of writing
*May 14, 2010*

**statistics**

Using the 68-95-99.7 rule: Assume that a set of test scores is normally distributed with a mean of 100 and a standard deviation of 20. Use the 68-95-99.7 rule to find the following quantities: Suggest you make a drawing and label first… a. (0.1 point) Percentage of scores...
*May 10, 2010*

**psychology**

need to identify at least four key milestones in the development of cognitive psychology as a discipline, need some data to help me discuss this question
*May 8, 2010*

**anatomy**

If a person has stopped breathing and is recieving pulmonary resuscitation would it be better to administer pure oxygen or a mixture of oxygen and carbondioxide?
*May 7, 2010*

**anatomy**

If a person has stopped breathing and is recieving pulmonary resuscitation would it be better to administer pure oxygen or a mixture of oxygen and carbon dioxide?
*May 7, 2010*

**Life orientation**

Any human or enviromental problem and the community is Mamelodi
*May 3, 2010*

**psychology**

Can I please have some information to help me discuss this question beloww: Analyze at lease two research methods used for uncovering basic emotions
*April 30, 2010*

**Intermediate Algebra**

Used ASCII Character Solve for X 5=6x+ 6x=5-9 6x=-4 x=-2/3
*April 30, 2010*

**Intermediate Algebra**

Solve this please 5=6x=9 6x=5-9 6x=-4 x=-2/3
*April 30, 2010*

**statistics**

At a ski area in Vermont, the daytime high temperature is normally distributed during January, with a mean of 22°F and a standard deviation of 10°F. You are planning to snowboard there this January. What is the probability that you will encounter daytime highs of a) 42...
*April 23, 2010*