Sunday

February 7, 2016
Total # Posts: 251

**5th grade math (word problems)**

For the first question divide 3 in two 25 your answer is the equation subtracted from 25 2nd question=200×20=your answer
*December 12, 2012*

**3rd grade language**

1-3 follow ms sue and Joshua but 4 answer=is=state of being
*December 11, 2012*

**grammer**

Who is correct
*December 6, 2012*

**5th grade math**

what is a word problem for 4.23x10
*December 5, 2012*

**Elementary**

edie needs to start from the ones place then subtract the rest of the problem. simple as pie.
*December 5, 2012*

**Spelling 4th grade**

Fly is correct jump is wrong
*November 26, 2012*

**chemistry**

Determine whether a solid forms when solutions containing the following salts are mixed. If so, write the ionic equation and the net ionic equation. KCl and Na2S
*November 21, 2012*

**Chemistry**

If argon has a volume of 5.0 dm3 and the pressure is .92 atm and the final temperature is 30 degrees celcius and the final volume is 5.7 L and the final pressure is 800 mm Hg, what was the initial temperature of the argon?
*November 19, 2012*

**Algebra**

A motorcycle breaks down and the rider has to walk the rest of the way to work. The motorcycle was being driven at 45mi/hr and the rider walks at a speed of 6mi/hr. Teh distance from home to work is 25 miles and the total time for the trip was 2 hours. How far did the ...
*November 11, 2012*

**Angular Speed-Physics**

Stars originate as large bodies of slowly rotating gas. Because of gravity, these clumps of gas slowly decrease in size. What happens to the angular speed of a star as it shrinks? Explain.
*November 1, 2012*

**Physics Inertia!**

Rank from fastest to slowest. a)a solid ball rolling down a ramp without slipping b)a cylinder rolling down the same ramp without slipping. c)a block sliding down a firctionless ramp with the same height and slope. Select all that apply. The ball is fastest The cylinder is ...
*October 30, 2012*

**Physics**

An asteroid with mass m = 1.85*10^9 kg comes from deep space, effectively from infinity, and falls toward Earth. How much work would have to be done on the asteroid by friction to slow it to 550 m/s by the time it reached a distance of 1.50*10^8 m from Earth?
*October 16, 2012*

**Math (kindergarten)**

18 + 21 = 39 Answer: 39
*October 10, 2012*

**physics**

Henry almost had it right.... s=(2+4+4.5)km/ 20min --> convert to m/s: s=10.5km/20min x 1000m/1km x 1min/60s --> 8.75 m/s
*October 4, 2012*

**algebra**

A board is leaning against a building so that the top of the board reaches a height of 18 feet. The bottom fo the board is on the groung 4 feet away from the wall. What is the slope of the board as a positive number?
*September 30, 2012*

**algebra**

simplify 36/3*4-(-2) ?
*September 19, 2012*

**physics**

What is the final speed?
*September 14, 2012*

**physics**

Light-rail passenger trains that provide transportation within and between cities are capable of modest accelerations. The magnitude of the maximum acceleration is typically 1.3 {\rm m}/{\rm s}^{2}, but the driver will usually maintain a constant acceleration that is less than...
*September 14, 2012*

**chemistry**

Why is it important to list what you already know about a problem ?
*September 3, 2012*

**Physics (one more)**

A lead ball has a volume of 94.3 cm3 at 19.3°C. What is the change in volume when its temperature changes to 34.3°C? Someone on here has already answered this but it was wrong!
*June 22, 2012*

**PHYSICS please!!!!**

A cube of wood and a cube of concrete, each 0.17 m on a side, are placed side by side. One of the long faces of the rectangular prism formed by the two cubes is held at 17°C, and the opposite long face is held at 32°C. What is the total rate of heat transfer through ...
*June 22, 2012*

**physics....**

nevermind I get it
*June 12, 2012*

**physics....**

I don't understand why you're multiplying by two for the second question.
*June 12, 2012*

**world history/World Geography**

B. Is the correct answer for this question. Source: Took a World Geography with the same question and got a hundred, and the correct answer is B. (Courtnei, A is wrong answer.)
*May 1, 2012*

**Humanities**

Is the answer C?
*April 27, 2012*

**Astronomy**

Can you please show me how you calculated your answer?
*March 9, 2012*

**Astronomy**

The maximum wavelength of emission from Neptune's cloud tops is 6.0 x 10-5m. Using this value, determine the temperature of Neptune's outer atmosphere.
*March 9, 2012*

**Physics**

A river is flowing 4.0 m/s to the east. A boater on the south shore plans to reach a dock on the north shore 30.0 Degrees downriver by heading directly across the river. What should be the boat's speed relative to the water?
*February 6, 2012*

**Physics**

A river is flowing 4.0 m/s to the east. A boater on the south shore plans to reach a dock on the north shore 30.0 Degrees downriver by heading directly across the river. What should be the boat's speed relative to the water?
*February 6, 2012*

**algebra**

if a 12 apple weigh 5lb how much 36 weigh
*February 6, 2012*

**Physics**

1. set it up: s=d/t --> s=(2+4+4.5)km/ 20min 2. Convert to meters/ seconds s= 10.5km/20 min x 1000m/km x 1min/60s= 8.75 m/s
*January 9, 2012*

**Astronomy**

Thank you for your help!
*December 12, 2011*

**Astronomy**

Explain the idea of parallaz. The closet star to the Sun, Proxima Centauri, is 4.2 light years away from us. What is its parallax angle?
*December 12, 2011*

**Science**

Okay, say im doing a science fair project, and I am not really good at coming up with questions, what would be a good question to ask about Newtons First Law of Motion
*November 28, 2011*

**Astronomy**

If we assume the Sun is made totally out of hydrogen, how many hydrogen atoms are contained with the Sun? If the Sun converts half of these hydrogen atoms into helium over its lifetime of about ten billion years, how many hydrogen atoms are converted per second? Mass of Sun = ...
*November 22, 2011*

**Astronomy**

Calculate the wavelength of peak emission for a typical sunspot and compare it to that of the photosphere. How many times brighter is the photosphere than a typical sunspot? (Hint: Assume the photosphere and a sunspot are good blackbodies for these calculations.)
*November 21, 2011*

**physics**

(-6.51,76.8)
*October 6, 2011*

**Physics**

Posted earlier but I wrote it incorrectly. How fast would a rocket have to be going in order to completely leave the solar system? (Assume that the Sun is the only mass in the solar system and that the rocket is beginning its journey from Earth's orbit?)
*September 30, 2011*

**Physics**

How fast would a rocket have to be going in order to completely leave the solar system? (For the second part of this problem, assume that the Sun is the only mass in the solar system and that the rocket is beginning its journey from Earth's orbit?)
*September 30, 2011*

**Physics**

How fast does a rocket need to be going to break free of Earth's gravity? How fast would it have to be going in order to completely leave the solar system? (For the second part of this problem, assume that the Sun is the only mass in the solar system and that the rocket is...
*September 30, 2011*

**Physics**

How fast does a rocket need to be going to break free of Earth's gravity? How fast would it have to be going in order to completely leave the solar system? (For the second part of this problem, assume that the Sun is the only mass in the solar system and that the rocket is...
*September 29, 2011*

**science**

what effect does sugar water have on a plant?
*September 20, 2011*

**Algebra**

what is incorrect in this argument: the equation 5x + 3 = 3 + 5x isalways true because of the symmetric property of equality
*September 14, 2011*

**French**

Please help me unscramble the following words in french: penctoier uernigrsul aceir cuehaebrisnfa arlabtce botromen eercn nealum lstaa
*September 11, 2011*

**Physics**

A particle starts from xi = 10 m at t0 = 0 and moves with the velocity graph shown in the graph below. Sorry for no graph it's at 12 m/s when time is zero. Moves down consistently so that it is 8 at 1 4 at 2 0 at 3 and negative 2 at 4. (a) What is the object's position...
*September 5, 2011*

**calculus**

In a problem where you have to solve the limit f(x) as x approaches x sub zero, what does x sub zero mean?
*August 8, 2011*

**math**

Well 9 times 6 gets 54 and there is 2 left over so the answer is 6 and two-ninths
*May 23, 2011*

**Acids and Bases**

NaOH was added to 1.0 L of HI(aq) 0.40 M. Calculate H3O in the solution after the addition of .14 mol of NaOH. Calculate H3O in the solution after the addition of 0.91 mol of NaOH.
*March 23, 2011*

**math**

1/6 students like math, 2/3 like reading and 12 like science. How many students were asked.
*March 22, 2011*

**Marine Ecology**

what tissue do humans have that cnidarians do not?
*March 14, 2011*

**chemistry**

A steel tank containing helium is cooled to 15◦C. If you could look into the tank and see the gas molecules, what would you observe?
*March 7, 2011*

**psychology**

8. Cognitive psychology can best be described as:
*February 6, 2011*

**social studies**

In 1963 Viginia's public schools opened their doors to:...
*February 2, 2011*

**science**

What is Pangea?
*January 25, 2011*

**geography**

Taken as a whole, what would you say is the single most pressing problem found in Latin America or South America? What possible solutions can you develop?
*December 15, 2010*

**10th grade**

Describe the geography of Southern South America and how this geography influences economic activity?
*December 15, 2010*

**physics**

so would it be... P=((73+7)*9.8)/2*pi*r then divide it by 2? or would it be... 4P=((73+7)*9.8)/2*pi*r then divide it by 2?
*December 13, 2010*

**physics**

A 73 kg man in a 7.0 kg chair tilts back so that all the weight is balanced on two legs of the chair. Assume that each leg makes contact with the floor over a circular area with a radius of 1.0 cm, and find the pressure exerted on the floor by each leg.
*December 13, 2010*

**physics**

i keep coming up with the wrong answer for T1. i am getting 358.57 and its wrong.
*December 12, 2010*

**physics**

A window washer is standing on a scaffold supported by a vertical rope at each end. The scaffold weighs 210 N and is 2.80 m long. What is the tension in each rope when the 710 N worker stands 1.80 m from one end? smaller and larger.
*December 12, 2010*

**physics**

nevermind. i just figured it out.
*December 12, 2010*

**physics**

A 581 kg satellite is in a circular orbit about the Earth at a height above the Earth equal to the Earth's mean radius. the orbital speed is 5590.98 m/s. Find the period of its revolution.
*December 12, 2010*

**physics**

A satellite moves in a circular orbit around the Earth at a speed of 5661 m/s. (b) Determine the period of the satellite's orbit. the satilites altitude above the surface of earth is 6076312.71m. im using the equation P=2*pi*r/v and am coming up with 1.87 and its not right...
*December 8, 2010*

**physics...**

A satellite moves in a circular orbit around the Earth at a speed of 5661 m/s. (a) Determine the satellite's altitude above the surface of the Earth. i'm using the equation Gm/(r+h)=9.8 where h=altitude and i keep coming up with the wrong answer.
*December 8, 2010*

**physics**

A 0.480 kg pendulum bob passes through the lowest part of its path at a speed of 3.10 m/s. (b) When the pendulum reaches its highest point, what angle does the cable make with the vertical? The cable of the pendulum is 80 cm or .8m.
*December 7, 2010*

**physics**

A 0.480 kg pendulum bob passes through the lowest part of its path at a speed of 3.10 m/s. (b) When the pendulum reaches its highest point, what angle does the cable make with the vertical? The cable of the pendulum is 80 cm or .8m.
*December 7, 2010*

**physics**

A 0.50 kg ball that is tied to the end of a 1.4 m light cord is revolved in a horizontal plane with the cord making a 30° angle with the vertical. (b) If the ball is revolved so that its speed is 4.0 m/s, what angle does the cord make with the vertical?
*December 6, 2010*

**physics**

A 0.50 kg ball that is tied to the end of a 1.4 m light cord is revolved in a horizontal plane with the cord making a 30° angle with the vertical. (b) If the ball is revolved so that its speed is 4.0 m/s, what angle does the cord make with the vertical?
*December 6, 2010*

**physics**

(b) If the ball is revolved so that its speed is 4.0 m/s, what angle does the cord make with the vertical?
*December 6, 2010*

**physics**

A 0.50 kg ball that is tied to the end of a 1.4 m light cord is revolved in a horizontal plane with the cord making a 30° angle with the vertical. determine the balls speed.
*December 6, 2010*

**statistics**

with a mean of 62 and standard deviation of 12, how would you find a proportion greater than 80 and draw it on a curve?
*December 2, 2010*

**physics**

Consider a level flight turn of a propeller-driven airplane in which the airplane makes a complete circular turn in 1.6 min. If the plane's speed is 200 m/s, what is the radius of the circle?
*December 2, 2010*

**physics**

It has been suggested that rotating cylinders about 10 mi long and 4.9 mi in diameter be placed in space and used as colonies. What angular speed must such a cylinder have so that the centripetal acceleration at its surface equals the free-fall acceleration?
*December 1, 2010*

**physics**

An 8.00 g bullet is fired into a 250 g block that is initially at rest at the edge of a table of 1.00 m height. The bullet remains in the block, and after the impact the block lands d = 1.8 m from the bottom of the table. Determine the initial speed of the bullet.
*November 23, 2010*

**World Geography**

Identify the state capital that will be visited by a team from a state capital?
*November 23, 2010*

**reading**

how do you know that the stranger ontinued to care about the baileys after he left the farm?
*November 11, 2010*

**AP physics**

A 66 kg diver steps off a 13 m tower and drops, from rest, straight down into the water. If he comes to rest 4.4 m beneath the surface, determine the average resistance force exerted on him by the water.
*November 10, 2010*

**MATH**

How does the equation of a log and Ln function effect the graph. (Ex. Dilation, reflection, ect.)
*November 8, 2010*

**math**

.34 least 30% next 3/4 greatest
*November 8, 2010*

**Physics**

A car traveling initially at 7.49 m/s acceler- ates at the rate of 0.743 m/s2 for 5.41 s. What is its velocity at the end of the accel- eration?
*November 8, 2010*

**Physics**

The knot at the junction is in equilibrium under the influence of four forces acting on it. The F force acts from above on the left at an angle of with the horizontal. The 6 N force acts from above on the right at an angle of 47◦ with the horizontal. The 5.4 N ...
*October 24, 2010*

**college**

How do i calculate the number of equivalents of h2c4h4o4 titrated?
*October 20, 2010*

**Math**

Kay is making beaded belts for her friends from 6.5 meters of cord.On belt uses 0.625 meters of cord.How many belts can she make?
*October 18, 2010*

**Chemistry**

the hydrated salt is overheated and the anhydrous salt thermally decompose, one product being a gas; will the reported value of x be too high,low on the unaffected? explain.
*October 12, 2010*

**physics**

By how much does the speed of a vehicle moving in a straight line change each second when it is accelerating at 4 m/s2?
*October 3, 2010*

**Physics**

A ball is thrown upward from the ground with an initial speed of 26.8 m/s; at the same instant, a ball is dropped from a building 15.9 m high. After how long will the balls be at the same height?
*September 21, 2010*

**algebra**

write the inequality statement. The range of shoe sizes in geometry class is size 5 to size 14. really confused.
*September 7, 2010*

**Math**

i need help with diviging decimals.
*August 24, 2010*

**7th grade**

I am trying to unscramble ecrfenine in my science homework and cannot get an answer. My mom has read the whole chapter as well with me and we cannot find it. It has to do with scientific method.
*August 18, 2010*

**Math**

10 divied by 16 =
*July 14, 2010*

**8th grade**

when two or more substances combine to make a complex compound,the process is called a......WHAT??
*June 8, 2010*

**Math**

An aluminum cylindrical juice can has a height of 4 in. and a radius of 6 in. How many square inches of aluminum are needed to make the can?
*May 23, 2010*

**chemistry**

What's an example of suspensionn?
*May 17, 2010*

**Social Studies**

How do ethnic, racial, and religious hatred weaken society??
*April 17, 2010*

**algerbra 2**

what are the other roots of 3x^4-12x^3+41x-8x+26 that include 2-3i
*April 10, 2010*

**algebra**

5 c 2
*February 3, 2010*

**7th grade**

Susan has red, blue, green, and yellow sweaters. Joanne has green, red, purple, and white sweaters. Diane's sweaters are red, blue, purple, and mauve. Each girl has only one sweater of each color, and will pick a sweater to wear at random. Find each probability. P(each ...
*January 20, 2010*

**elizabeth shelton**

ok
*December 16, 2009*

**physics**

A crate starts from rest at the top of a large, frictionless spherical surface, and slides into the water below. At what angle, θ, does the crate leave the surface?
*December 4, 2009*

**8th Grade Algebra**

1. (y^2+6y+1)(3y^2-3) 2. (4x^2-2x-1)(3x-1) 3. (n^2-n+2)(n+2) Help!! I'm trying to help my daughter with her homework.
*November 16, 2009*