Sunday

February 19, 2017
Number of results: 26,319

**physics(Please respond)**

if a rock is dropped into a well and it takes 17 seconds to hit the water how far down is the water level from the top of the well

*March 13, 2015 by mike*

**Science**

When a football is kicked into the air, it has a velocity of 32m/s at an angle of 25º. At the very top of the ball’s path, what is it's vertical velocity?

*March 16, 2015 by Brenna*

**geometry**

Harold has a photograph that is 8 in. Test Image 10 in. that he wants to print at a reduced size to fit into a frame that is 6 in. tall. What will be the dimensions of the new photograph?

*March 23, 2015 by Anonymous*

**maths**

a stone is dropped into a well 44 meter deep and the sound of speash is heared after 3.12 second find the speed of sound air

*March 25, 2015 by sonu*

**science 1 question**

4. When a fan is turned on, it changes electrical energy into __________ energy. (1 point) motion magnetic gravitational*** electromagnetic

*April 6, 2015 by Linda*

**Physics**

An object of 3.0kg is projected into the air at a 55 degree angle. It hits the ground 3.4s later. What is it's change in momentum while it's in the air?

*April 23, 2015 by Michaela*

**biology help**

What are the biological terms of the following 1.A diagram that show the evolutionary history of plant groups 2.hoploid cell which grows into a plant

*June 17, 2015 by jonathan*

**writing**

15. Once you acquire these two basic skills, you'll be able to transform a vague idea in your mind into a coherent piece of writing.

*July 26, 2015 by Anonymous*

**science**

Bacteria in swelling on the roots of peanut plants convert blank gas from the air into compounds that the plants need to grow.

*September 12, 2015 by zaniya*

**Introduction to Terrorism**

Describe some of the laws of war and how this is factored into the issue of terrorism. My answer is killing of innocent civilians is prohibit.

*December 20, 2015 by Dee365*

**Calculus Related Rates**

Mulch is dumped into a pile with height always 1/3 the diameter at a rate of 30 ft^3/hr. How fast is the height increasing when it is 6 ft tall?

*March 3, 2016 by Sally*

**Science**

An electric light is plugged into a 120-V outlet. If the current in the bulb is 0.5 A, how much electrical energy is used by the bulb in 15 minutes?

*March 4, 2016 by April*

**chemistry**

calculate the molarity of solution cacl2 . if on the chemical analysis . it is found that 200 ml of solution contains 3 into 10 raise the power 22 cl- ions

*March 18, 2016 by muskan*

**physics**

David Wetterman drops a 5 kg watermelon from the top of a 30 m building. What is the velocity of the watermelon as it smashes into the ground (neglecting air resistance)?

*April 17, 2016 by Eli Garrett*

**Physics**

You step into an elevator, and it accelerates to a downward speed of 8.2 m/s in 2.2 s . How does your apparent weight during this acceleration time compare with your actual weight?

*April 25, 2016 by Megan*

**Of Mice and Men (CHECK!)**

Why does Crooks let Lennie into his room? a. He can't stand people b. He likes Lennie c. He just wants company d. He hates Curley A: c

*June 6, 2016 by Victoria*

**math**

Divide 534 into three parts such that the second part will be 32 less than twice the first ,and the third will be 18 more than the first.

*July 27, 2016 by waris*

**5th grade math**

If a farmer divides his land into square fields that are 1/2 mile long and 1/2 Mike wide how many fields will he have

*September 1, 2016 by Dexter*

**Calculus**

A ball is thrown vertically into the air so that its height s after t seconds is given by the equation, s=-1/27(t^2)+4√t. Find its maximum height.

*October 11, 2016 by Glen*

**math**

A ball is thrown vertically into the air so that its height s after t seconds is given by the equation, s=-1/27(t^2)+4√t. Find its maximum height.

*October 11, 2016 by Anonymous*

**math**

Andi has shopping 48 orange and 45 apples, he wishes to divide it equally into bags. How many possible ways he can do this (he can have 6 bags of 8 fruits)

*October 23, 2016 by cintia*

**chemistry**

Dr Bob, Sorry about this penny thing, but if I was to put pure zinc into acetic acid, what would happen to the zinc?

*November 13, 2016 by lulu*

**Algebra 2**

I am trying to factor a 4th degree polynomial that does not have any rational roots. I need to somehow get it factored into two quadratics. Anyway know of a method to use. 3x^4 - 8x^3 - 5x^2 + 16x - 5

*March 8, 2007 by Brenda*

**Physics**

I have an ice cube :3000 KG,the tempereture is about 50 (cel).would you please let me know how much does it take long for it to change into water ,Hourly Basis ? Regards

*August 27, 2007 by Ali*

**US History**

True or False...For several decades into the eighteenth century, American colonists continued to lead rather backward lives, isolated from British society and culture.

*September 28, 2007 by Michael*

**Science**

If your house is heated by a furnace that blows hot air into the rooms, you are depending on the process of ______ to stay warm. Choices are: convection, radiation,conduction, heat

*October 2, 2007 by Grant*

**com 140**

Post your response to the following: What strategies can you use to incorporate effective visual elements into business presentations? Explain your answer. need help getting started

*December 11, 2008 by Anonymous*

**Algebra**

I am supposed to find the equation for the boundary lines, using the points 0,4 and 3,5. I got 5-4/3-0, which plugged into y=mx+b would equal y=1/3x+b. The book says b equals four, but where does this number come from? Thanks!

*January 31, 2009 by Caleb*

**Psychology**

How important to the mediation process is the client’s cultural perspective? How can a mediator use information about culture without falling into the traps of stereotyping and over-generalizing?

*July 20, 2009 by Angel*

**Physics**

Bob heads out into a lake at an angle of 47 degrees with respect to the shore. If his boat is capable of a speed of 2.9 m/s how far from the land will he be in 3 min. and 24 sec.? Answer in units of m.

*August 26, 2009 by bubba*

**Civics**

What have presidents justified under the principles of "immediate needs of the nation" and "a mandate from the people?" Would the answer be: It has shaped the office of the presidency into its modern form.

*October 14, 2009 by Jennifer*

**Algebra**

How do you solve 5x^4-12x^3 by factoring? I tried to pull out an x^3, but x^3(5x-12) is hard to break down further into two groups. There's no factors of 5x really other than 5 and 1, and that won't work. Could you demonstrate?

*October 15, 2009 by Mitchell*

**science**

Some insects get their nutrients by sticking a needlelike mouth part into a plant. Which vessel do you believe they are tapping? We have no clue!!! Could you explain to us what the question is asking and help us get the answer? Thanks, Wizard

*December 17, 2009 by wizard*

**Psychology**

Explain proactive and retroactive interference and how you might counteract their effects while studying in order to facilitate maximum absorption of information into long-term memory.

*May 22, 2010 by tricia*

**sculpture**

if gianlorenzo bernini's apollo and daphne were to be moved from the galleria borghese in rome where it now stands into the the ufizzi gallery, the most ideal place to install it would be?

*September 26, 2010 by cassie*

**Math**

Is it possible to bend a 20cm length of wire into the shape of a rectangle which has an area f 30cm^2? I have no idea how to even approach this. Please give me some guidance?

*October 7, 2010 by Anonymous*

**phi 445**

diversity may not be as good with less representation in foreign countries. American companies may not want to go into another country if the benefit of cheaper business costs weren't there. How do you think this would effect us?

*October 15, 2010 by meshelle*

**english**

"The editors . . . break those sequences up into quick jagged shots that key us up and keep us hyper-alert . . . we look hard at the screen to take it in." aesthetics? or is it authenticity?

*November 1, 2010 by danny*

**Organic Chemistry Lab**

A sample of hexane and octane is injected into a gas chromatograph equipped with a nonpolar column. Predict which one will have the shorter retention time.

*November 8, 2010 by Jeanne*

**inter Algebra**

r+s=5 3s+2t=-1 4r+t=14 ican u breakdown the answer I get half way though i forgot the last pat wheater i put it back into the original equationn alot of steps i get lost

*November 14, 2010 by linda*

**Finite Math**

What interest rate, compounded monthly, would you need to be paid in order to grow a $2000 investment into $3500 over a five year period?

*December 7, 2010 by Ericka*

**Finite Math**

What interest rate, compounded weekly, would you need to be paid in order to grow an $8000 investment into $12,000 over a ten year period?

*December 7, 2010 by Ericka*

**Science 6th grade**

What is the best way to tell a chemical change has taken place? 1. The matter changes color 2. The mixture separates into layers 3. The composition chnages

*December 30, 2010 by Ali*

**science**

A test liquid has a density of 1.1 g/ml. When you pour some of it into a cup of water, what will happen (assuming that their natures are such that they don't mix and that there is no chemical reaction between the two substances)?

*January 8, 2011 by Anonymous*

**nuclear engineering**

Determine the amount of energy required (in MeV) to dissociate the following elements into component parts (protons, neutrons and electrons) • Hydrogen • Deuterium • Tritium

*January 13, 2011 by Jack*

**Government**

According to communist theory, the value of a commodity is determined by the: A. Gosplan B. Five Year Plan C. laws of supply and demand D. amount of labor put into it I think it's D?

*July 14, 2011 by Ant*

**Physics**

a car traveling at a velocity of 90 km/h, when you see a dog step into the road 50 m ahead. you hit the breaks hard to get maximum deceleration of 7.5 m/s^2. how far will you travel before stopping?

*September 7, 2011 by bl*

**english**

what three words create assonance in the stanza One day a girl went walking and stepped into a store she bought a pound of sausages then set them on the floor.

*November 11, 2011 by tracy*

**Psychology Please Help!!!!**

The energy that directs behavior into productive areas originates in: a. instinct. b. emotion. c. drive reduction. d. leptin. From reading the text I know it is either a or c and not b or d. I think it is c but I am not too sure.

*November 23, 2011 by Anonymous*

**chemistry**

which of the following will result in a chemical change?A.melting ice to obtain water B.evaporating alcohol into vapor.C.drying wood in ashed D.burning coal in a furnace

*February 5, 2012 by norman*

**math**

Jane needs $30,000 to buy another car in eight years. How much should she deposit at the end of each half year into an account that earns 6% interest compounded semiannually?

*April 1, 2012 by lynn*

**math**

sunita baked a round cake for 11of her friends.she wants to divide it into 11 pieces with only 4 cuts. it is not important that the sizes of each piece should be the same how can she do that ? show it in diagram

*June 13, 2012 by NAHID NOORI*

**Help please..Physio!!:0**

If trypsin and chymotrypsin become activated within the pancreas and then are released in their active forms into the bloodstream, why would this represent a potentially life-threatening situation?

*July 29, 2012 by L.Bianchessi*

**Physio help please**

If trypsin and chymotrypsin become activated within the pancreas and then are released in their active forms into the bloodstream, why would this represent a potentially life-threatening situation?

*July 31, 2012 by L.Bianchessi*

**english**

what three words create assonance in this stanza:one day a girl went walking and stepped into a store she bought a pound of sausages then set them on the floor

*November 5, 2012 by kyelin*

**Algebra**

I need help solving this set of equations by substitution. xy=2 3x − y + 5 = 0 I originally used (3x+5=y) and came up with (x=.333 and x=-2) but when I substitute it into the original equation I get (y=2 and y=1) and it is wrong according to my homework. Please help me!

*November 9, 2012 by Jim*

**chemistry**

at a particular temperature, k equals 2.0 x 10 to the -6 power for the reaction 2CO2 <-> 2CO + O2 if 2.0 mol CO2 is initially placed into a 5.0 L vessel, calculate the equilibrium concentration of all species

*December 3, 2012 by Anonymous*

**physics**

A heavy concrete panel is being lifted into position in a building by means of a crane . The tension of 2.17 104 N in the supporting cable produces a torque with respect to point O. (Let L = 42.0 m.)

*December 6, 2012 by Anonymous*

**Chemistry**

Molar Mass of a Condensable vapor: The significance of immersing the flask as far as possible into the hot water bath? = Is to allow the volatile liqued to evaporate, current?

*January 15, 2013 by AhmadM*

**Math**

A person invests $4500.oo into 2 different mutual funds. The first has a 4.5% interest rate the second 6%. He made a total of $225 in the investment. How much did he invest in each fund?

*February 7, 2013 by Skyler*

**Chemistry**

If your partner did not take into account the vapor pressure of water when calculating the moles of hydrogen produced, would the mass of Mg that was calculated at the end of the experiment be too high or too low? Why?

*April 8, 2013 by Kate*

**Physics**

Carol drops a stone into a mineshaft 122.5m deep. Calculate the time from when she hears it hit the bottom of the shaft. Assume the speed of sound in the air 343 m/s.

*July 8, 2013 by Alex*

**english**

There was no danger, difficulty, or that could ponce de leon from venturing into the jungles of florida to search for the fountain of youth. a= obstructuion...deter b=procrastination... subside i know the definitions its to hard i think its b

*September 21, 2013 by someone*

**World History**

26. The Italian fascists had a slogan: "Women into the Home." How did this support their political ideas? Any help would be greatly appreciated, I can't find the answer in my book. Please and thank you!

*December 30, 2013 by Alex*

**math**

Approximately how much principal would need to be placed into an account earning 3.575% interest compounded quarterly so that it has an accumulated value of $68,000 at the end of 30 years?

*June 17, 2014 by Anonymous*

**Chemistry**

A sample of a smoke stack emission was collected into a 1.25 L at 752 mm Hg and analyzed. The analysis showed 92% CO2, 3.6% NO, 1.2% SO2, and 4.1% H2O by mass. What is the partial pressure exerted by each gas?

*November 15, 2014 by Aaqib Zaman*

**Foundation of a Healthy Lifestyle**

A child practices tossing a ball into a hoop from the same distance each day. What type of knowledge is he using? A. Regressive B. Hypothetical C. Assimilative D. Adaptive A.

*November 20, 2014 by Amanda*

**Foundation of a Healthy Lifestyle**

A child practices tossing a ball into a hoop from the same distance each day. What type of knowledge is he using? A. Regressive B. Hypothetical C. Assimilative D. Adaptive A.

*November 20, 2014 by Amanda*

**Foundation of a Healthy Lifestyle**

A child practices tossing a ball into a hoop from the same distance each day. What type of knowledge is he using? A. Regressive B. Hypothetical C. Assimilative D. Adaptive A.

*November 20, 2014 by Amanda*

**Foundation of a Healthy Lifestyle**

A child practices tossing a ball into a hoop from the same distance each day. What type of knowledge is he using? A. Regressive B. Hypothetical C. Assimilative D. Adaptive A.

*November 20, 2014 by Amanda*

**Chemistry**

When HgO is heated, it decomposes into elemental mercury and molecular oxygen gas. If 64.0 g of Hg is obtained from 85.0 g of the oxide, what is the percent yield of the reaction? The balanced equation is 2HgO > 2Hg + 02.

*December 8, 2014 by Anonymous*

**science**

when a molecule of water vapro in the air come into contact with a cold can of soft drink, they lose energy, slow down, and form a liquid due to a decrease in what?

*February 11, 2015 by sarah*

**science~Ms. Sue**

A ____ is a substance that cannot be separated into similar substances by physical or mechanical methods such as filtering, boiling, or sifting. (I have to again write the answer)

*February 24, 2015 by Aaliyah*

**Chemistry**

Calculate ΔG (in kJ) at 298 K for some solid ZnF2, 0.055 M Zn2+ and 0.063 M F-(aq). I found Q to be 2.18e-4, then i implemented it into the equation deltaG=RT(lnQ). I got -20.89, but the answer is -12.2.

*April 7, 2015 by JUNDY*

**Ms. Sue PLZ HELP!!!(Civics)**

The United States often uses sanctions to ______ a country. create an exception on impose a penalty on*** discourage trade with step into a conflict with

*May 17, 2015 by Anonymous*

**Algebra**

What constant must we place in the blank below in order to be able to factor the resulting expression into the product of two linear factors: 2mn - 16m - 7n + ____

*June 16, 2015 by XXX*

**David A. Brown**

Jonathan measure 2 cups of flour into a bowl on the counter then he spilled part of it and now there is only three eighths cup left how much did he spill

*September 15, 2015 by Ryan*

**Social Studies (please help)**

In what ways were diverse people from the Arabian Peninsula through the Middle East, North Africa, and into Spain united? What held them together and unified them, and how was this done?

*November 12, 2015 by Sarah*

**Chemistry**

How high can a person (assume a weight of 70 kg) climb on one ounce of chocolate if the heat of combustion (628 kJ) can be converted completely into work associated with vertical displacement?

*September 28, 2016 by Joesph*

**maths**

1a) Solve each of these questions by factorising the left hand side into a product of linear factors: (i) x^2 - 6x - 40 = 0 (ii) 3x^2 + 20x - 7 = 0 For each question in part (a), check your solutions by substituting them back in to the equation.

*October 24, 2016 by Saphina AlMatary*

**maths**

Solve each of these questions by factorising the left hand side into a product of linear factors: (i) x^2 - 6x - 40 = 0 (ii) 3x^2 + 20x - 7 = 0 For each question in part (a), check your solutions by substituting them back in to the equation.

*October 24, 2016 by Saphina AlMatary*

**maths**

1a) Solve each of these questions by factorising the left hand side into a product of linear factors: (i) x^2 - 6x - 40 = 0 (ii) 3x^2 + 20x - 7 = 0 For each question in part (a), check your solutions by substituting them back in to the equation.

*October 24, 2016 by Steve*

**algebra 2**

Reuben deposited $2000 into an account with a 3.8% annual interest rate, compounded semiannually. Assuming that no withdrawals are made, how long will it take for the investment to grow to $3000?

*October 30, 2016 by .*

**algebra 2**

Reuben deposited $2000 into an account with a 3.8% annual interest rate, compounded semiannually. Assuming that no withdrawals are made, how long will it take for the investment to grow to $3000?

*October 31, 2016 by .*

**Science**

.Fertilizers and pesticides applied to farm fields in Pennsylvania have made their way down into the Chesapeake Bay in Maryland. This is an example of _________________ pollution. Ms.Sue

*January 19, 2017 by Help I need somebody not just anybody*

**Physics**

A car travels at 64 mi/h when the brakes are suddenly applied. Consider how the tires of a moving car come in contact with the road. When the car goes into a skid (with wheels locked up), the rubber of the tire is moving with respect to the road; otherwise, when the tires roll...

*September 21, 2012 by Anne*

**Science**

Plz correct me if I'm wrong!! 1) Which of the following is a chemical change? (1 point) Boiling of water Melting a cube of ice Dissolving 10 grams of salt in water Splitting water into hydrogen and oxygen*** 2) What is the mass of water that results from combining 2.0g of ...

*February 1, 2016 by Vanessa*

**math 116**

I am taking math 116 , I am to find the solution to the problem 9x-3y=-68 and -2x+y=18 and to give an ordered pair. Now, that you have it where you take 9x from both sides, or is it 3y? My question is when you just have y do you count that as one(y) , I try to work the problem...

*August 1, 2009 by dedee*

**Algebra - Can you PLEASE check - I"m stuck!**

Bob is studying the growth of a particular species of plant. He writes the following equation to show the height of the plant f(n), in cm, after n days: F(N)=10(1.02)^n 1. Starting from 0 days, plug x-values into our function to find out how many days it takes for the plant to...

*November 17, 2014 by Jake*

**Algebra**

What would be the missing piece of information given the following information: Find the slope of the line that passes through the points (2, 6) and (4, 10). m = ? a. 2 b.6 c. 1 d. 9 I think it is c. Remeber the definition of a slope. It is the change in y divided by the ...

*October 14, 2006 by Margie*

**Statistics**

I've made an attempt to solve these using my TI-84 plus, however I don't know if my approach is correct. Any help is appreciated. 1.) As the costs of prescription drugs escalate, many senior citizens are ordering from or going to Canada to get their medicine. Is there a good ...

*May 1, 2012 by Amy*

**physics**

Equal 0.400-kg mass of lead and tin at 60 degrees celsius are placed in 1kg of water at 20 degrees celsius. a) what is the equilibrium temperature of the system? b)if an alloy is half lead and half tin by mass, what specific heat would you anticipate for the alloy? c) how many...

*February 17, 2013 by anonymous*

**algebra**

please help me here with a and b and do i have c and d correct?, i do not know how to start. john put his spare change in jar every night. If he has $11.09, at end of Jan. . 22.27 at the end of feb, 44.35 in April, 75.82 in july, 89.00 in aug. and 114.76. a. at the end of oct...

*January 16, 2012 by ann*

**weighted average?**

if you have 70 calls that come in during one minute and 3 seconds..and then you have 10 calls come in at a total of 15 seconds. what is the weighted average of calls and time? I assume you want the weighted average of the frequency of receiving calls. The easiest way to get ...

*December 12, 2006 by Cherilyn*

**Algebra**

Can someone help me do an example like this one. State the application, give the equation of the quadratic function, and state what the x and y in the application represent. Choose at least two values of x to input into your function and find the corresponding y for each. ...

*November 24, 2007 by Alicia*

**English**

Can you please check these sentences for me, please? It's urgent. 1) What do you think about going to the cinema? How about meeting at school? 2) How do I arrive at the school? I put the clothes back in the wardrobe. I put (is "take") the rubbish out once a day. 3) I must have...

*April 7, 2011 by Mike*

**Economics**

There are 10 identical consumers whose demand is D: p = 20 - 10q. There are 10 identical firms, each firm's marginal cost is MC(q)= 5 + 5q. The market is competitive. a) derive the market demand function b) derive the market supply function c) what is the market equilibrium ...

*February 4, 2013 by Andrea*

**Business Accounting**

why does the bank tell you they are "crediting" your account when they increase it and "debiting" your account when they decrease it? I know this is a simple question but I just want to make sure I am currect with my answer before I post it to my class forme. Answer: A bank ...

*May 13, 2009 by Anonymous*

**Chemistry**

HOBr (aq) <----> H+ (aq) + OBr- (aq), Ka = 2.3 x 10^-9 Hypobromous acid, HOBr, is a weak acid that dissociates in water, as represented by the equation. (a) Calculate the value of [H+] in a solution of HOBr that has a pH of 4.95. Ans: 1.1 * 10^-5 M (b) Write the ...

*April 10, 2012 by Confused*

**drbob222 math,correction**

i made some corrections for the previous postage can you check those when you get a chance please. Also for this one: my options of answers are: A)2y + 6/3 B)3x- 6 /2 C)2 + 2y D)2/3y + 6 Directions: Solve for x: 3x - 2y =6 3x - 2y = 6 +2y +2y 3x = 6 +2y -- ------ 3 3 so my ...

*January 11, 2007 by jasmine20*