Thursday

October 8, 2015
Total # Posts: 1,088

**science- physics**

Find the x- and y-components of the vector d⃗ = (6.0 km , 31 ∘ left of +y-axis). I worked it out and got 5.14, 3.09 and apparently it's wrong, I don't know what I did wrong.
*October 8, 2015*

**History**

Before the Industrial Revolution, people would mostly farm and everyone would help out. They would use animals for transportation and got their food from farming or trading for food. Clothing was sewn by hand.
*September 30, 2015*

**U.S. History**

Dry, right?
*September 30, 2015*

**U.S. History**

Was it easier for Paleo-Indians (hunter gatherers) in dry climate or cold climate?
*September 30, 2015*

**science- physics**

A car is traveling at a steady 90 km/h in a 50 km/h zone. A police motorcycle takes off at the instant the car passes it, accelerating at a steady 7.3 m/s/s.How much time elapses before the motorcycle is moving as fast as the car? How far is the motorcycle from the car when it...
*September 27, 2015*

**physics**

In college softball, the distance from the pitcher's mound to the batter is 43 feet. If the ball leaves the bat at 105 mph, how much time elapses between the hit and the ball reaching the pitcher? I figured out how many ft there would be in a second, but I'm not so ...
*September 18, 2015*

**maths**

I think 38 because jade ate 4. Nicole ate 8. Kahlee ate 16. And Chris ate 10. Add them all up and you get 38.
*September 18, 2015*

**Geometry**

but how do i fin <1 and <3?
*September 14, 2015*

**Geometry**

but how do i fin <1 and <3?
*September 14, 2015*

**Geometry**

Two lines intersect so that angle 1 and angle 3 are vertical angles, angle 2 and angle 4 are vertical angles, and angle 1 and angle 2 form a linear pair. how do you slove for x and find the measure of all the angles when angle 2= x sqaured -3x and angle 4= 6x=10 please help it...
*September 14, 2015*

**Geometry**

line BD bisects angle ABC. Find angle ABD, angle CBD, and angle ABC if angle ABD equals 3x+6 and angle DBC equals 7x-18 please help it would mean a lot
*September 10, 2015*

**math PLEASE HELP**

The bases of trapezoid $ABCD$ are $\overline{AB}$ and $\overline{CD}$. Let $M$ be the midpoint of $\overline{AD}$. If the areas of triangles $ABM$ and $CDM$ are 5 and 17, respectively, then find the area of trapezoid $ABCD$.
*August 9, 2015*

** Thesis Statement **

I have to write a summary response essay to "How to Tame a Wild Tongue" by Gloria Anzaldua. However I do not know how to construct this thesis. The text is about Anzaldua's frustration towards having to change her accent, language, and being told how to talk ...
*June 11, 2015*

**Physics**

At a constant velocity, a 5kg bag of cement is pulled straight up a 7m wall. How much work is done by the puller? (Gravitational pull is 9.8m/s2, W(J)=F(N)*D(m) How do I work this problem??
*May 23, 2015*

**Math**

A pet store is building new cages for their birds. They have 8 cockatiels, 32 parakeets, and 28 finches. How many cages will they need if each cage will hold either 2 cockatiels, 10 parakeets, or 14 finches. The different types of birds are all kept separate.
*May 21, 2015*

**Math**

A pet store is building new cages for their birds. They have 8 cockatiels, 32 parakeets, and 28 finches. How many cages will they need if each cage will hold either 2 cockatiels, 10 parakeets, or 14 finches. The different types of birds are all kept separate.
*May 21, 2015*

**Math**

Gina is tying up a stack of newspapers with string. She wants the string to wrap around twice, once lengthwise and once crosswise. If the stack of newspapers is 11 inches wide, 13 inches long, and 15 inches high, how much string will she need?
*May 15, 2015*

**Probability**

Lavonne’s mother has brown eyes, and her father has blue eyes. Lavonne has brown eyes, and her husband has blue eyes. She knows that her children are equally likely to have brown or blue eyes. What is the probability that her first child will have blue eyes? If her first ...
*May 12, 2015*

**Math**

Jameson has a storage bin that is the shape of a cube for his building blocks. If one side of the cube measures 2 feet, how many cubic feet of space does he have for storage?
*May 10, 2015*

**Math**

Tobias is helping his uncle paint the side of a barn. Each can of paint covers 80 square feet. If the side of the barn is 10 feet high and 15 feet wide, how many cans of paint will Tobias need?
*May 10, 2015*

**algebra**

a line has a slope of 5. it passes through the points (1,4) and (6,y). what is the value of y?
*May 8, 2015*

**math**

Larry and Willa are each reading the same book.Larry has read 2/3 of the book.Willa read 4/6 of the book,so she read more.Is Willa correct?Explain
*April 15, 2015*

**chemistry**

.300 molar
*March 31, 2015*

**chemistry**

Sorry it is .300ml
*March 31, 2015*

**chemistry**

How many ml of molar sulfuric acid is to be added to 50.0 ml of 0.250 molar sodium hydroxide solution to neutralize it completely . cannot post reaction sorry ..
*March 31, 2015*

**math**

Suppose you borrowed $15000 to buy a car at an interest rate 7.2% compounded monthly. What will the monthly payments be on loans of 36, 48 and 60 months if you do not have to put any money down on the financing?
*March 18, 2015*

**chemistry**

what's the lewis dot diagram for methanol?
*March 13, 2015*

**checking my answers.**

In the winter of 1976, when I was only four years old, my family moved into a modest home in a growing Greenville neighborhood. Upon a slope on one side of the house, stood a dozen tree sprigs looking rather bald and barren. By springtime, however, the little trees began ...
*March 12, 2015*

**Trig**

A pendulum swinging through a central angle of Ts completes an arc of length 6.4 cm. What is the length of the pendulum?
*March 8, 2015*

**U.S. HISTORY**

besides, financial and foreign affairs...what problems did the U.S. face after the war of 1812?
*March 1, 2015*

**History**

besides, financial and foreign affairs...what problems did the U.S. face after the war of 1812?
*March 1, 2015*

**Psychology 315**

I have ti figure out the correlation coefficient of a statistical factor o 4 personin a dextrity and anxiety test. 1 1 10, 2 1 8, 3 2 4, 4 4 2 . So I have to figure out the correlation coeficient? this is may part of the task.
*February 25, 2015*

**physical science**

How high is a building when an anvil takes 4 seconds to hit the ground? How long will it take a piano to hit the ground when dropped off a building 103 meters high?
*February 15, 2015*

**english**

influence
*February 11, 2015*

**algebra**

Find the equation of a line that passes through the points (1/3, 2/5) and (–4/5, 1/2). Please put your final answer in standard form (Ax + By = C) and please make sure that there are NO fractions (or decimals) in this answer and that the “x” term is positive. ...
*February 10, 2015*

**What study would be the best? Help with Psychology**

experiment
*January 27, 2015*

**Science**

For the dissociation of acetic acid, CH3COOH CH3COO- + H+, the free energy change, ΔG° = 27.26 kJ/mol. What is the free energy change, ΔG°', in the biochemical standard state? Given R = 8.315 J/mol · K. T = 25°C.
*January 24, 2015*

**Chemistry**

14.6 mL of hydrochloric acid is completely neutralized by 25.0 mL of 1.40 M sodium hydroxide, what was the hydrochloric acid mass percent (m/m) before the titration? (Density of hydrochloric acid is 1.02 g/cm3)
*December 12, 2014*

**Chemistry**

Acetylene gas, C2H2, reacts with oxygen according to the following equation. If 46.0 g of acetylene reacts with 100.0 g of oxygen, what is the theoretical yield of heat produced from the reaction? ___ C2H2(g) + ___ O2(g) → ___ CO2(g) + ___ H2O(g); balanced reaction ...
*December 12, 2014*

**Chemistry**

The mass/volume percent of a sodium sulfate and water solution is 12.0% m/v. If the density of the solution 1.22 g/mL, what is the molarity of the solution?
*December 12, 2014*

**Chemistry**

A spoon of sterling silver is 92.5% silver by mass and the rest is made of other metals, usually copper. If the spoon contains 0.557 mol of silver, what is the mass of the spoon?
*December 12, 2014*

**Chemistry**

If NaCl has a solubility of 36.0 g in 100 g of H2O at 20 °C, how many moles of water are needed to prepare a saturated solution containing 0.263 mol of NaCl at 20 °C?
*December 12, 2014*

**Chemistry**

After adding a hot piece of titanium to a cup containing 300.0 mL of 30.0 °C water, the final temperature of the solution is 41.2 °C and the final volume of the solution is 400.0 mL. The density of titanium is 4.50 g/cm3. If no energy is lost to the surroundings, what ...
*December 11, 2014*

**database management**

I am having problems determiming how to draw out an entity relation diagram. Can you help?
*December 3, 2014*

**O-Chem**

Write the structural formula of a compound with an unbranched chain of five carbon atoms that is an alkenoic acid.
*November 24, 2014*

**Calculus**

Of the infinitely many lines that are tangent to the curve y = −7 sin x and pass through the origin, there is one that has the largest slope. Use Newton's method to find the slope of that line correct to six decimal places.
*November 20, 2014*

**Science/Math Question**

So in school, I am doing a " planet paper roll comparison " So the scale of the diameter of one planet is 0.943cm or something.. How do I measure it on paper?
*November 20, 2014*

**Science Technology**

How was the camera developed ? ( Who made it )
*November 19, 2014*

**Science Technology**

does it mean to put in something?
*November 19, 2014*

**Science Technology**

the last sentence wasn't clear to me. Please explain.
*November 19, 2014*

**Science Technology**

Originally the camera was made to capture a moment in time quickly and exactly. Paintings often reflected the opinion of the painter in their art, however, photos show exactly what was happening. Photos can be biased but nonetheless they are real. Photography started becoming ...
*November 19, 2014*

**Science Technology**

I tried reading that but I don't understand
*November 19, 2014*

**Science Technology**

Can someone give me a brief explanation to why Cameras were developed ? Please make it short and simple.
*November 19, 2014*

**Science- Very Urgent**

And also what do u mean by will give rise to a ...
*November 14, 2014*

**Science- Very Urgent**

Thank you so much
*November 14, 2014*

**Science- Very Urgent**

is it reasonable to expect that these models will change again in time? Explain. Like the bohr diagram and etc;
*November 14, 2014*

**Science**

In what ways is Bohr's model of the atom similar to and different from Thomson's model? I still need someone to help me.. I dont know the similarities and differences..
*November 14, 2014*

**Science**

But I dont really know how they are similar or different..
*November 14, 2014*

**Science**

The Bohr Model has an atom consisting of a small, positively-charged nucleus orbited by negatively-charged electrons. I dont know about thomson's model.
*November 14, 2014*

**Science**

In what ways is Bohr's model of the atom similar to and different from Thomson's model?
*November 14, 2014*

**Chemistry**

787.6
*November 9, 2014*

**math**

Sandy measures the length of a hockey stick. she says it it 4 units long. what unit did she use? A. cubes B. inches C. feet D. yards
*November 4, 2014*

**Physics**

What is the momentum (in kg m/s) of a 131- kg football player running at a top speed of 9.9 m/s? What is the momentum of a 9.32- g rifle bullet traveling at 618 m/s
*November 4, 2014*

**Math**

Joe is making a rectangular mosaic with colored tiles. He will use 20 tiles to make his design. What are all the different arrangements of tiles that Joe could use to design his mosaic?
*October 23, 2014*

**Physics**

A highway curve with a radius of 800 m is banked properly for a car traveling 100 km/h. If a 1620- kg Porshe 928S rounds the curve at 220 km/h, how much sideways force must the tires exert against the road if the car does not skid?
*October 6, 2014*

**math**

43%
*October 6, 2014*

**(MCV4U) Vectors **

The air velocity of helicopter Hal is 200km/h due west. Hal's ground velocity is 180km/h in the direction N80*W. Determine the wind velocity. Please help! I know i should be drawing a diagram but I am very confused with how to do this question! Thank you!
*October 3, 2014*

**math**

A room measures 14 feet by 20. feet. How many tiles would it take to cover the deck if the square tiles measure 8.0 inches to the side?
*September 30, 2014*

**math**

cup 3/4 full 1/6 is poured out. what fractionof the whole bottle is poured out x fractions= whole # .
*September 15, 2014*

**physics**

Given the position function s(t) = t cos t, find the velocity function. Answer v(t) = -sin t v(t) = sin t v(t) = cos t - t sin t v(t) = cos t + t sin t
*May 28, 2014*

**Algebra**

Player lost 15 yards, gained 3,then 21 in three successive running plays. What was his total gain and loss
*May 23, 2014*

**science**

An object moves up and down the y-axis with an acceleration given as a function of time t by the expression a equals A sine of omega-t. , whereA. and omega. are constants. What is the period of this motion? Answer omega. 2 pi omega. omega squared times A. 2 pi over omega. ...
*May 23, 2014*

**math homework help**

motorcycle company invested 250,000 at 4.5% compounded monthly to be used for the expansion of their manufacturing facilities how much will available for the project in 3.5 years?
*May 20, 2014*

**Writing **

How are mobile computing, Web 2.0, and social media changing how IT systems are used?
*May 19, 2014*

**Health Information Management Statistics**

In September, the hospital has 23.652 admissions. Of these, 1,569 were readmissions. What is the hospital's readmission rate
*May 12, 2014*

**Algebra**

can you show how the equation is solved?
*May 3, 2014*

**Algebra**

A moving picture theater usually took in $220 an evening on ticket sales. The manager found out that by reducing the price of tickets by 5 cents, 200 more persons attended, and the box office receipts were $80 more an evening. How many persons attended before the reduction in ...
*May 3, 2014*

**Math word problem**

can you show how the equation would be solved?
*May 3, 2014*

**Math**

I understand the second step but how did you get the third answer?
*May 1, 2014*

**Math **

I need help with the below math problem. I have to write out the steps to show the answer. 2(x - 14) + 3 = 7x + 5
*May 1, 2014*

**History HELP! ASAP**

thanks,very helpful!
*April 16, 2014*

**History HELP! ASAP **

Congress's adoption of the declaration of independence confirmed a decisive shift in the conflict between the colonies and britain. Why did the colonies make this decisive breaak in 1776? In your answer, discuss some of the arguments for and against independence.
*April 16, 2014*

**History HELP! ASAP **

In the mid-eighteen century, how did native americans influence relations between european nations? between britain and the colonies?
*April 16, 2014*

**Chemistry**

In the SN2 mechanism, considering that the nucleophile attacks at the same time as the leaving group leaves, what would the effect of having a hindered (crowded) reaction center be on the rate of the reaction? Would you expect it to react slower or faster than an unhindered ...
*April 14, 2014*

**math**

tim has a det of $872.23. If he pays 40 percent of the debt this month and 50 percent of the remainder next month, how much does tim still owe?
*March 26, 2014*

**MATH :D**

I got 4,950 but my friend got 365 Start listing them out!!! 8)
*March 7, 2014*

**History**

Thanks!
*March 6, 2014*

**History**

How did tea change the life in Europe?
*March 6, 2014*

**math**

If you separate the socks with equal charges 4 x10-9 C until they’re 7 cm apart, what force will each sock exert on the other?
*March 3, 2014*

**Analytical Chemistry **

Match the following terms about analytical precipitations to their definitions: A.) Coprecipitation B.) Adsorption C.) Absorption D.) Gathering E.) Masking F.) Digestion G.) Peptization 1.) Inclusion or occlusion of impurities within a crystal. 2.) Binding of impurities to the...
*February 28, 2014*

**Chemistry**

Never mind, I figured out that it shouldn't make a difference. That's what I originally thought, but just wanted to clarify.
*February 27, 2014*

**Chemistry**

If say 70 mL of water is heated vs 100 mL of water, would the temperature be different or does the amount of the substance not make a difference on the temperature Thanks!
*February 27, 2014*

**physics**

The pulley is light and frictionless. Find the mass M1, given that M2 (7.00 kg) is moving downwards and accelerates downwards at 3.01 m/s2, that θ is 15.0°, and that μk is 0.270.
*February 25, 2014*

**English**

Can someone pleases explain what this sentence means...this sentence is talking about the middle class in France. "They viewed universal male suffrage as the ultimate concession to be made to popular forces, and they strongly opposed any further radical republicans and ...
*February 19, 2014*

**Physics**

A moving 3.20 kg block collides with a horizontal spring whose spring constant is 224 N/m. The block compresses the spring a maximum distance of 5.50 cm from its rest position. The coefficient of kinetic friction between the block and the horizontal surface is 0.490. What is ...
*January 1, 2014*

**Physics**

it's still incorect.. can you explain it a bit more please?... Thank you for all your help.
*December 31, 2013*

**Physics**

A moving 3.20 kg block collides with a horizontal spring whose spring constant is 224 N/m. The block compresses the spring a maximum distance of 5.50 cm from its rest position. The coefficient of kinetic friction between the block and the horizontal surface is 0.490. What is ...
*December 31, 2013*

**physics**

A moving 3.20 kg block collides with a horizontal spring whose spring constant is 224 N/m. The block compresses the spring a maximum distance of 5.50 cm from its rest position. The coefficient of kinetic friction between the block and the horizontal surface is 0.490. What is ...
*December 30, 2013*

**english**

Thank you
*December 10, 2013*

**english**

Thank you
*December 10, 2013*