Sunday

July 5, 2015

July 5, 2015

Total # Posts: 2,182

**Physics URGENT! PLEASE**

An object in equilibrium has three forces exerted on it. A 36 N force acts at 90° from the x axis and a 42 N force acts at 60°. What are the magnitude and direction of the third force?
*October 25, 2012*

**AP Physics**

A 45 kg gymnast steps off a platform located 1.3 m above a spring board. The spring board compresses 25 cm. a)What is the spring constant of the spring board? b) If energy is in fact conserved in this problem, explain how high the gymnast will spring upward. Assume the gymnast...
*October 21, 2012*

**English**

Thank you, that helped a lot!
*October 21, 2012*

**English**

In "The people could fly" what opposing forces struggle against eachother. And what is the main conflict in the story?
*October 21, 2012*

**Science**

You know that a gas in a sealed container has a pressure of 111kPa at 23 Celsius. What will the pressure be if the temperature rises to 475 Celsius?
*October 18, 2012*

**Early Child Care**

All of the following statements about the brain are correct EXCEPT: A) the brain is strongly run by patterns rather than facts. B) the brain runs better when food intake is irregular. C) stress and threat effect the brain in many ways. D) all learning is mind-body.
*October 16, 2012*

**Early Child Care**

the ability to put an object or group of objects in a logical series based on a property of those objects is: A) seriation B) phonemic awareness C) classification D) attribution
*October 15, 2012*

**math**

when enlargeing sn object, why does the area increase diffrently than the preminter?
*October 15, 2012*

**physics URGENT! PLEASE**

Figure the resultant velocity of a plane that is traveling at 300 km/hr @ 190 degrees when he encounters the wind below a) 30 km/hr tailwind b) 40 km/hr headwind c) 50 km/hr wind blowing south
*October 15, 2012*

**Physics**

A motor boat heads west across a river as a current of 12 km/hr. The speedometer reads a constant of 26 km/hr. What is the resultant velocity of the boat as compared to its original path? And what is the degree?
*October 15, 2012*

**Calculus**

f (0)=sinø + cos ø of(0)=3 f'(0)=4
*October 15, 2012*

**Physical Science**

A 100 kg sample of a metal is cooled from 100°C to 20°C by removing 20 kcal of heat. Calculate the specific heat capacity of the metal.
*October 12, 2012*

**algebra 2**

Solve for x: x=4+x divided by y-3
*October 11, 2012*

**Reading**

Was that fine
*October 10, 2012*

**Reading**

2. In a way that you didn't mean, people can interpret things
*October 10, 2012*

**Reading**

Changing sentences to COMPLEXS sentences. 1. The drought caused deprivation of food and clean water in the town 2. Many people can interpret things in a way that you didn't mean 3. The book on Ancient Greece gave me some insight as to what their life was like. 4. The part ...
*October 10, 2012*

**Reading ASAP**

You have to change the complete sentences to complex sentences
*October 10, 2012*

**Reading ASAP**

Changing sentences for complex sentences 1.The stray cat took refuge in an old cardboard box to keep warm. 2. Some students find it difficult to make the transition to a new school 3. Jesus suffered from persecution due to his religious beliefs.
*October 10, 2012*

**history**

how important were federal policies for the expansion of the industrial economy between 1865 and 1900
*October 8, 2012*

**Reading ASAP**

Where do I put the thingy in above of which words
*October 8, 2012*

**Reading ASAP**

Underline each variable IV ABOVE THE INDEPENDENT VARIABLE DV ABOVE THE DEPENDANT VARIABLE 1.How will Product x affect the life if cut flowers. 2.What is the effect of different amounts of oxygen on the rate of yeast growth. 3.Does the number of bees affect the amount of honey ...
*October 8, 2012*

**Chemistry**

Zinc reacts with hydrochloric acid according to the reaction equation: Zn(s)+2HCl(aq)->ZnCl2(aq)+H2(g) How many milliliters of 4.50M HCl1(aq) are required to react with 8.25g of an ore containing 30.0% Zn(s) by mass?
*October 7, 2012*

**fractions 7th grade**

37.5 minutes
*October 7, 2012*

**7th grade Math quick help Ms. Sue**

This is the math unit test at connections academy. you should be ashamed.
*October 3, 2012*

**Math**

The answer to 7 plus 4(8 minus 2)
*September 25, 2012*

**physics**

Two beetles run across flat sand, starting at the same point. Beetle 1 runs 0.42 m due east, then 0.72 m at 32o north of due east. Beetle 2 also makes two runs; the first is 1.48 m at 47o east of due north. What must be the magnitude of its second run if it is to end up at the...
*September 24, 2012*

**Physics**

At what distance from the earth's surface with a mass of 5.0kg be just 45.0N in weight. HELP
*September 23, 2012*

**Math**

the height of a rocket with an upward speed of 1000m/s is expressed as h=1000t-4.9t^2. what is the hight of the rocket after 8 seconds?
*September 20, 2012*

**history**

i believe its B is it correct
*September 19, 2012*

**history**

The statement below represents which genre from the early American and Colonial period? I want to explain origins of the natural world and its processes. (1 point) the poetry of Anne Bradstreet the oral tradition of Native Americans the journals of William Bradford the essays ...
*September 19, 2012*

**history**

Thomas Jefferson and Thomas Paine shared a similar purpose for writing. What was their purpose? (1 point) to express and reflect to persuade to inform to invite
*September 19, 2012*

**Chemistry**

The bromine content of the ocean is about 65 grams of bromine per million grams of sea water. How many cubic meters of ocean must be processed to recover 1.0 pounds of bromine if the density of sea water is 1.0 x 103 kg/m3?
*September 19, 2012*

**history**

i believe its anne bradstreet and william bradford is it correct
*September 19, 2012*

**history**

Which of the following authors wrote in the same genre? Anne Bradstreet William Bradford Olaudah Equiano Thomas Jefferson
*September 19, 2012*

**HISTORY**

William Bradford wrote Of Plymouth Plantation and A "To My Dear and Loving Wife." B The Day of Doom. C The Voyage of the Mayflower. D The Mayflower Compact. I THINK ITS C OR D BUT IM PRETTY CONFUSED. PLEASE HELP , IF I WERE TO PICK ID PICK C
*September 19, 2012*

**SUBJECT**

Which of the following statements about literary movements is NOT true? A A literary movement is a period that shares a particular set of ideas, concerns, or characteristics. B Ideas, concerns, or characteristics may be shared by literary movements. C Literary movements may ...
*September 19, 2012*

**HISTORY**

IS IT d?
*September 19, 2012*

**HISTORY**

IM SORRRY B-all men are created equal C - these Colonies are, and of right ought to be, free and independent states D-we the people of the United States
*September 19, 2012*

**HISTORY**

Which of the following phrases does NOT appear in the Declaration of Independence? ( A life, liberty, and the pursuit of happiness B all men are created equal C these Colonies are, and of right ought D to be, free and independent states we the people of the United States I ...
*September 19, 2012*

**history**

ARE THOSE CORRECT PLEASE CHECK
*September 19, 2012*

**history**

ACADB
*September 19, 2012*

**history**

1-Which of the following statements about literary movements is NOT true? (1 point) A A literary movement is a period that shares a particular set of ideas, concerns, or characteristics. B Ideas, concerns, or characteristics may be shared by literary movements. C Literary ...
*September 19, 2012*

**Physics AP**

A ball is thrown straight upward with a speed of +12 m/s. A) what's the ball's acceleration just after it is thrown? B) how much time does it take for the ball to rise to its maximum height? C) what's the approximate maximum height the ball reaches?
*September 15, 2012*

**physics**

What is the magnitude of the electrostatic force that the two protons inside the nucleus of a helium atom exert on each other? Why do atomic nuclei not simply explode?
*September 12, 2012*

**physics**

If we wanted a block of iron of mass 3.25 kg to acquire a positive charge of 0.100 C, what fraction of the electrons would we have to remove?
*September 12, 2012*

**physics**

Consider a battery that has Vt = 12.0 V when it is not connected to a circuit. When a 10.0- resistor is connected with the battery, the potential difference across the battery’s terminals drops to 10.9 V. What is the internal resistance of the battery?
*September 12, 2012*

**Science**

i dunno....
*September 11, 2012*

**chemistry**

the silver will heat up almost twice as fast.
*September 10, 2012*

**math**

the second largest six-digit number in which no digit appears more than three times
*September 9, 2012*

**science**

Lithium fluoride has a Ksp of 1.84 x 10-3. If 1.5 g are dissolved, what will be the percent ionization?
*September 7, 2012*

**chemistry**

if 14.7g of na reacts with 7.9g og br how many grams of nabr are found
*September 3, 2012*

**Physics**

An object is thrown upwards at an initial speed of 19.6 m/s from a height of 65m. Determine how long will take for the object to reach the ground (time of flight). what formula should i use?
*August 29, 2012*

**Math**

When dealing with linear equations, what does consistent, inconsistent, dependent, and independent mean? I'm so confused!
*August 23, 2012*

**math**

shoshanna is going to use 12 base ten blocks to model the largest possible number less than 999.Then she will use another 12 blocks to model the smallest possible number less than 999.what are the 2 numbers?
*August 20, 2012*

**math**

trying to solve fraction problem 2/3+3m/5=31/15 been too long....
*August 18, 2012*

**Physics**

Car A is moving at a constant speed of 10.0 m/s and passes Car B which is at rest. 10 seconds after, the latter follows with an acceleration of 0.5 m/s2. Determine the distance that the latter has to travel before it overtakes the former. does it require quadratic formula? Oh ...
*August 12, 2012*

**Chemistry**

What will happen when 100 ml of diethyl ether are added to 100 ml of water and thoroughly mixed? a.) Water will form a separate layer on top of the ether layer. b.)The temperature of the mixture will significantly increase. c.)There will be a chemical reaction between ether ...
*August 12, 2012*

**chemistry**

Suppose a student started with 135 mg of trans-cinnamic acid and 0.52 mL of a 10% (v/v) bromime solution, and after the reaction and workup, ended up with 0.202 g of brominated product. Calculate the student's theoretical and percent yields.
*August 12, 2012*

**math**

Question: why is it not 2/9? Since I know 1 squared will be 1, which ends in 1, but what about 9? 9 squared is 81, it ends in 1. So that makes 2/9 = 0.22 @MathMate
*August 11, 2012*

**math**

Question: why is it not 2/9? Since I know 1 squared will be 1, which ends in 1, but what about 9? 9 squared is 81, it ends in 1. So that makes 2/9 = 0.22
*August 11, 2012*

**Math**

I have this question for summer homework: "Mary's quiz scores were 92, 85, 78, 71, 77, and 80. She says she had an average of 92 for her quiz scores. Which term best describes her average score? a. mean b. median c. mode d. range" I calculated the mean, and it ...
*July 26, 2012*

**Algebra***

Short Answer. Find the following quotient: x^2-36/x+6
*July 26, 2012*

**Algebra***

Short Answer. Find the following product: (x+7)^2
*July 26, 2012*

**Algebra***

Short Answer. Find the following product: -3z(-z^2-9)
*July 26, 2012*

**chemistry**

SciMann Best Answer - Chosen by Voters Let UNITs guide you; always USE THEM in your calculation to prevent errors moles of Na in samp = 0.78 g/ atwt Na = ?? x moles NaBr * MW NaBr + (moles Na - x moles NaBr) * MW NaCl = 2.01 g x moles NaBr = [2.01 g - moles Na * MW NaCl] / [MW...
*July 26, 2012*

**algebra***

Find the following product: -9x^5y(-5x^4y^6) A)-14x^9y^7 B)45x^9y^7 C)-9x^5y-5x^4y^6 D)45x^20y^6
*July 26, 2012*

**Algebra**

Divide and check: (3x^2-2x-13)divided by (x-2)
*July 24, 2012*

**algebra**

Lunc Capacity: The polynomial 0.041h-0.018A-2.69 can be used to estimate the lung capacity, in liters of a female find the lung capacity of a 40-year old woman who is 165 cm tall.
*July 24, 2012*

**algebra***

Multiply (x^10+3)(x^10-3)
*July 24, 2012*

**algebra**

Short Answer. Add the following polynomials. (4x^2-3x+2)+(5x^3-7x^2-9)
*July 21, 2012*

**algebra**

Solve. Leave the answers in terms of pi ?. a)Find a polynomial for the sum of the areas of the circles shown in the figure. b)Find the sum of the areas when r = 5 and r = 11.3. this is what I got but I did not do it right. I needed to To write an expression for the sum, i need...
*July 21, 2012*

**algebra**

find a polynomial for the shaded area of each figure. (21t+8)(4t)-(3t-4)(2t) I did this problem incorrectly!
*July 21, 2012*

**algebra**

Solve. Leave the answers in terms of pi ?. a)Find a polynomial for the sum of the areas of the circles shown in the figure. b)Find the sum of the areas when r = 5 and r = 11.3. this is what I got but I did not do it right. I needed to To write an expression for the sum, i need...
*July 20, 2012*

**Statistics**

Find the probability of at least one match. n = 62 How do I figure out r?
*July 6, 2012*

**Physics**

I'm having trouble following this. How do you go from: GM/4R - GM/R = -GM/(R + h) to 3/4R = 1/(R+h) to h=R/3?
*June 28, 2012*

**Physics**

Eris, the largest dwarf planet known in the Solar System, has a radius R = 1200 km and an acceleration due to gravity on its surface of magnitude g = 0.77 m/s2. (a) Use these numbers to calculate the escape speed from the surface of Eris. (b) If an object is fired directly ...
*June 28, 2012*

**calculus**

(SIN^8X-5 SIN^5X+SINX)COSX DX I need the answer to this, because I have tried so many times and cannot figure it out.
*June 28, 2012*

**Physics**

The Moon causes tides because the gravitational force it exerts differs between the side of the Earth nearest the Moon and that farthest from the Moon. Find the difference in the accelerations toward the Moon of objects on the nearest and farthest sides of the Earth. (The mass...
*June 26, 2012*

**College Essay**

Thanks! I will try to elaborate more why this experience is special to me in my conclusion...
*June 18, 2012*

**College Essay**

Well one of the options for the Common App is to: Evaluate a significant experience, achievement, risk you have taken, or ethical dilemma you have faced and its impact on you. So do you think this would be acceptable as my "significant experience", or is it too strange?
*June 18, 2012*

**College Essay**

One seemingly normal day in junior year, my friend and I were taking a train together home from school. We were on an extremely crowded F train headed for Queens. Packed against the door that separated one train car from another, overly warm and squished with no pole nearby to...
*June 18, 2012*

**physics**

I would tell you the steps I've taken so far but I have no idea where to even start. Any help is appreciated! Thanks! A uniform 33.5-kg beam of length = 4.15 m is supported by a vertical rope located d = 1.20 m from its left end as in the figure below. The right end of the...
*June 16, 2012*

**Neoclassicism I english 11**

yeah i need the answers too.
*June 16, 2012*

**Accounting**

I need help in working this problem...please help... Gaines Company recently initiated a post audit program. To motivate employees to take the program seriously, Gaines established a bonus program.Managers receive a bonus equal to 10 percent of the amount by which actual net ...
*June 14, 2012*

**Accounting**

I am trying to figure out how to do this problem: scenarios (projected $90,000 annual cash inflow vs. projected $70,000 annual cash inflow). Note, 5 years of $90,000 per year equals $450,000 of total cash received over the duration of the project ($350,000 for 2nd project). ...
*June 14, 2012*

**math**

The answer is 16 because when you use FIOL for (5x-4)(5x-4) you get 25x^2 -20x-20x+16.Then you simplify to 25x^2-40x+16 to your original problem with the answer of 16 in the problem. FIOL is multiplying... the FIRST term then INNER terms then OUTER terms finally your LAST terms.
*June 6, 2012*

**physics**

If a concave mirror with a radius of curvature of 0.93 m has an object placed at 0.37 m in front of it, what is the mirror's focal length? Round your answer to 3 decimal places.
*June 4, 2012*

**physics**

If a concave mirror with a radius of curvature of 0.93 m has an object placed at 0.37 m in front of it, what is the mirror's focal length? Round your answer to 3 decimal places.
*June 4, 2012*

**Calc**

Oh, I forgot all about L'Hospital's Rule. Thanks!
*May 25, 2012*

**Calc**

Find the limit as x approaches zero from the right of ((sqrt((1+x)/(x^2))-(1/x)) I don't even know where to start with this. Help? P.S. If you go to the wolfphram alpha website and put copy and paste ((sqrt((1+x)/(x^2))-(1/x)) into the search bar you can see what it looks ...
*May 25, 2012*

**Maths B**

Charlotte received a score of 68 on both her English and Maths tests. The mean for English was 52 and the mean for Maths was 55. The standard deviations for English and Maths were 10 and 8 respectively. In which subject did Charlotte perform better? Explain your decision.
*May 24, 2012*

**Year 11 English**

thanks alot!!!
*May 24, 2012*

**Year 11 English**

Imagine you are the director of Rabbit-Proof Fence. Using what you have learned so far, how would you instruct the camera operator to help you communicate: a) how the girls are feeling during their walk home? b) how vast and empty the landscape is within the same scene? (1 ...
*May 24, 2012*

**chemistry HELP plz!**

The answer is b. 31P
*May 24, 2012*

**Maths B**

i don't get what you mean. Can you please explain it to me again.
*May 24, 2012*

**Maths B**

Charlotte received a score of 68 on both her English and Maths tests. The mean for English was 52 and the mean for Maths was 55. The standard deviations for English and Maths were 10 and 8 respectively. In which subject did Charlotte perform better? Explain your decision.
*May 24, 2012*

**Maths B**

Work out the 5 number summary Min=3 Q1=6 Median=8 Q3=14.5 Max= 24 IQR=Q3-Q1 =14.5 - 6 =8.5 Work out if 24 is an outlier or not. x-Q3>1.5*IQR 24-14.5>1.5*8.5 9.5>12.75 24 is an outlier
*May 24, 2012*

**Year 11 Maths B**

So does that mean n1=35 n2=8 m1=1715 m2=424 Total bag count: 43 Total Mass: 2139 New mean mass: 49.74418605 Round it to the nearest kilo 50kg. Is that correct???
*May 24, 2012*

**Geometry**

The volume of an oblique cone with equal diameter and height is 18pi cm^3. Find the height and radius(to the nearest cm).
*May 21, 2012*

**Physics**

A wave on a string is described by the following equation (assume the +x direction is to the right). y = (18 cm) cos[ðx/(5.3 cm) - ð t/(14 s)] What is its period? What is its speed? In which direction does the wave travel? To the left or to the right?
*May 20, 2012*