Sunday

February 7, 2016
Number of results: 14,890

**physics**

If the back of the truck is 1.0 above the ground and the ramp is inclined at 26, how much time do the workers have to get to the piano before it reaches the bottom of the ramp?
*September 21, 2010 by DP*

**physics**

A 160kg horizontal beam is supported at each end. A 330kg piano rests a quarter of the way from one end. What is the vertical force on each of the supports?
*November 27, 2012 by Melissa*

**math**

Does anybody understans this? You have been assigned a task of estimating the cost of a tree removal. The cost is $25 per foot, up to 50 feet; above that, the cost increases to $50 per foot. You drop the kids off at the swimming pool and see some of your friends basking in the...
*January 21, 2012 by Anthony*

**Physics**

A 500-kg elevator's cable snaps at a height of 15m. fortunately, there's a spring at the bottom of the shaft. If the spring has a spring constant of 500N/m, calculate how much it will be compressed before the elevator comes to a stop.
*April 4, 2010 by Brennen*

**physical science**

the 200g head of a golf club moves 40 m/s in a circular arc of 1.2m radius. How much force must the player exert on the handle of the club to prevent it from flying out of her hands at the bottom of the swing? ignore the mass of the clubs shaft.
*September 14, 2012 by tracey*

**Physics**

In the manufacture of a cam, a uniform solid cylinder of radius R is first machined. Then an off-center hole of radius R/2 is drilled, parallel to the axis of the cylinder, and centered at a point a distance R/2 from the center of the cylinder. Then cam, of mass M, is then ...
*May 16, 2007 by Lancelot*

**physics**

A rock is dropped into the Grand Canyon. It takes 18 seconds to hit the bottom. Calculate how deep the canyon is.
*August 26, 2013 by Terry*

**Physics**

how much torque does it take to turn a rotor that is 12" diameter and weights around 200lbs that seats on bearings. a 2" diameter shaft that thru the center of the rotor that is on center. don
*September 2, 2009 by righteous dude*

**phyics**

Why does the distance traveled by the ball in each half second after it is released change in the way that it does? A.Gravity is pulling down on the ball, so it accelerates down at a steady rate. B.The incline plane pushes up on the ball, so it accelerates down at a steady ...
*September 19, 2015 by rachel*

**solving for x math**

2e^(4x^2)=3 how do i solve for x. do i use the ln methode because i don't know how to do that. by calculator, i got x=.168 but i don't know how to show my work. please help me solve for x. Take natural logs of both sides. ln 2 + 4 x^2 = ln 3 4 x^2 = ln (3/2) = 0.40547 x^2 = 0....
*December 5, 2006 by david*

**Pre-Algebra**

If a ping pong ball falls from the top of a building that is 168 feet high, how many seconds will it take the ball to hit the ground? Remember, the formula for distance is d = 16t^2. 1 3.2 10.5 16
*October 1, 2012 by Anonymous*

**English**

Can you help me checked if the following sentences are grammatically correct? Thank you very much. 1) On what condition can Shylock take a pound of flesh from Antonio? On condition that he doesn't drop(?) a single drop of Antonio's blood. 2) Why can have the Duke have him ...
*September 26, 2010 by Franco*

**Statistics**

A family goes on vacation an average of three times every 8 years. a. What is the probability that they will have 4 vacations in an 8-year period? The answer the teacher gave us was .168 What formula would you use? Poisson, binomials, etc?
*March 7, 2011 by James*

**spanish**

"Cuando eran pequeños, ¿tocaban Uds. algunos instrumentos musicales?" "Sí, _____ el violín y el piano." a. tocaba b. tocaban c. tocamos d. tocábamos i'm not sure if it's C or D
*May 6, 2009 by y912f*

**Physics**

A piano string having a mass per unit length equal to 5.00 „e 10¡V3 kg/m is under a tension of 1 350 N. Find the speed with which a wave travels on this string.
*December 7, 2010 by Cf*

**physics**

If the back of the truck is 1.5 {\rm m} above the ground and the ramp is inclined at 24{\rm ^{\circ}}, how much time do the workers have to get to the piano before it reaches the bottom of the ramp?
*June 23, 2011 by JT*

**College Physics**

A steel piano string for the note middle C is about 0.68 m long and is under a tension of 400 N. If the fundamental frequency is 226 Hz, what is the string’s diameter?
*November 6, 2011 by Anon*

**physics**

A piano string having a mass per unit length equal to 5.10 10-3 kg/m is under a tension of 1,500 N. Find the speed with which a wave travels on this string.
*November 29, 2011 by jim*

**Electrochemistry**

Qualitively explain the effect of changing concentration of Cu^2+ using your experimental observations and the Keq values below (no calculations required) Cu^2+(aq) + 4 NH3(aq) --> [Cu(NH3)4]^2+(aq) , Keq = 1.2x10^12 CuS(s) --> Cu^2+(aq) + S^2-(aq) , Keq = 8.5 x 10^-45 ...
*May 16, 2008 by Donna*

**About Paris**

Monuments in Paris... -Grand Palais -Saint Chapelle -Le Louvre -Mur de la Paix -Notre Dame Any others that are well known?
*March 29, 2011 by Alice*

**statistics**

100 raffle tickets are sold for $3 with one grand prize of $200. Julie purchased one ticket. What is her expectation?
*January 8, 2013 by please help*

**7 th grade math**

hey i need to new what it the answer for this question 35 fewer than 168 and this is 7 th grade math so plz tell me thanx
*September 10, 2012 by liliana hernandez*

**Physics**

Read the activity 2-1:Force and Pressure in the lab manual (pages 167-168). As described in the manual, consider a 10 cc syringe is connected to a 50 cc syringe. Information of the syringes are as follows: (mass of 10 cc piston) = 16 g (mass of 50 cc piston) = 60.6 g (diameter...
*November 8, 2010 by Anonymous*

**math**

If a mail man could deliver to 112 homes on foot and to 168 homes by driving what percent productivity increase by driving
*May 14, 2013 by pollu*

**Physics**

In this problem, use g = 9.80 m/s2. Bizarro, located at Six Flags New England, in Agawam, MA, is the name of one of the top-rated roller coasters in the country. The first drop on the roller coaster brings you down 67 meters. There are some resistive forces acting as the ...
*October 30, 2011 by Jeanne*

**math**

-Write the arithmetic sequence 21,13,5,-3... in the standard form: a_n= -a_n=a_1+(n-1)d--so a_n=21+(n-1)-8 *a_n=-168-8n why isnt this right?
*October 25, 2009 by Ellie*

**Ap Physics**

Read the activity 2-1:Force and Pressure in the lab manual (pages 167-168). As described in the manual, consider a 10 cc syringe is connected to a 50 cc syringe. Information of the syringes are as follows: (mass of 10 cc piston) = 16 g (mass of 50 cc piston) = 60.6 g (diameter...
*November 12, 2009 by Ellie*

**Math**

Roger knows how many keys a piano has. He knows that some of the keys are broken. How can he find the number of keys that work
*September 18, 2012 by Ryan*

**Math**

Roger knows how many keys a piano has. He knows that some of the keys are broken. How can he find the number of keys that work?
*January 23, 2013 by Justin*

**math**

on a sunny day a 36 inch yard stick casts a 21 inch shadow how tall is the building whose shadow is 168 feet
*November 4, 2014 by matthew barroso*

**physics**

A ball is dropped from a height of 168 m. What is the ball height from ground after 2.24 sec of falling?
*September 28, 2013 by Anonymous*

**PreCalculus**

A piano tuner strikes a tuning fork for note A above middle C and sets in motion vibrations that can be modeled by the equation y = 0.001 sin 880 Pi(T). Find the amplitude and period for the function.
*October 15, 2012 by Anonymous*

**Physical Science**

I have a really good grade in this class and I need to keep it that way. I am only asking to have my answers checked. I would like to graduate with honors so please help if you can. 1. A car traveling along the highway needs a certain amount of force exerted on it to stop. ...
*January 2, 2011 by Toni*

**Physical Science**

I have a really good grade in this class and I need to keep it that way. I am only asking to have my answers checked. I would like to graduate with honors so please help if you can. 1. A car traveling along the highway needs a certain amount of force exerted on it to stop. ...
*January 2, 2011 by Toni*

**Chemistry 105**

An experiment shows that a 114 mL gas sample has a mass of 0.168 g at a pressure of 697mmHg and a temperature of 30 C. What is the molar mass of the gas? in g/mol
*October 23, 2011 by JULIE*

**Chemistry**

Consider the reaction below. 3 O2(g) --> 2 O3(g) At 175°C and a pressure of 128 torr, an equilibrium mixture of O2 and O3 has a density of 0.168 g/L. Calculate the Kp for the above reaction of 175°C
*February 20, 2012 by Elizabeth*

**Chemistry**

Consider the reaction below. 3 O2(g) --> 2 O3(g) At 175°C and a pressure of 128 torr, an equilibrium mixture of O2 and O3 has a density of 0.168 g/L. Calculate the Kp for the above reaction of 175°C
*February 20, 2012 by Andre*

**stats**

At a raffle, 1000 tickets are sold at $5 each. There are 20 prizes of $25, 5 prizes of $100, and 1 grand prize of $2000. Suppose you buy one ticket.
*July 5, 2015 by shonnda*

**spanish**

is this right? "¿Qué insturmentos tocan Sara y Jacobo en la banda?" "Tocan _____." a. el piano y el anuario b. el saxofón y la revista c. el contrabajo y la trompeta d. el coro y el trambor C?
*April 27, 2009 by spanish*

**Physics**

A shaft is turning at 71.6rad/s at time zero. Thereafter, its angular acceleration is given by α = –10.8rad/s2 – 4.42 t rad/s3 where t is the elapsed time. Calculate its angular speed at t = 2.73s. and How far does it turn in these 2.73s
*January 26, 2016 by Annie*

**physical science**

When a thermometer is placed in a beaker of hot water, why does the mercury level drop, rise? The mercury expands when heated and that forces it from the bulb at the base of the thermometer higher into the capillary. But Why does the mercury Drop First , then rise? If the ...
*June 22, 2007 by dave*

**finite math **

2. The Witherspoon Down Company specializes in making down jackets, ski vests, and comforters. The requirements for down and labor and the profits earned are given in the following chart: Down (pounds) Time (labor-hours) Profit ($) Jacket 3 2 6 Vest1 2 1 6 Comforter 4 1 2 ...
*April 29, 2012 by cjones*

**stats**

I am having a bit of trouble with some of the questions. Some of the ones I put below have an answer, is there anyway you can check the answer and help me with the rest I am having trouble with. Your sociology teacher claims that 60 percent of American males are married. You ...
*July 22, 2013 by sandra*

**science**

Who am I? My properties are very similar to those of sodium, I am lighter than the element that has an atomic number one less than mine...Help me please...
*February 19, 2011 by mary k.*

**english**

LANG-415.Mine exploded.Determine whether the sentence is ambigious or vague and explain the ambiguity or vagueness as appropriate.
*February 22, 2011 by Nura*

**englis**

One of the most commonly known_____________ which also happens to be a top favorite of mine is____________. do i need a comma's in this sentence?
*February 11, 2013 by jakey *

**science 207**

4. What can be done to prevent mine drainage from damaging the ecosystem? Utilize at least one scholarly resource to support your suggestions.
*June 29, 2015 by Lisa *

**ALGEBRA**

Determine the down payment and the amount to be financed for each home described below. (a) $340,340; 10% down The down payment is $ The amount to be financed is $ (b) $870,000; 20% down The down payment is $ The amount to be financed is $
*May 27, 2012 by Demie*

**math**

Determine the down payment and the amount to be financed for each home described below. (a) $360,360; 10% down The down payment is $ 1 The amount to be financed is $ 2 (b) $960,000; 20% down The down payment is $ 3 The amount to be financed is $ 4
*August 21, 2012 by Anonymous*

**math**

Determine the down payment and the amount to be financed for each home described below. (a) $360,360; 10% down The down payment is $ 1 The amount to be financed is $ 2 (b) $960,000; 20% down The down payment is $ 3 The amount to be financed is $ 4
*August 24, 2012 by Anonymous*

**maths --plse help me..**

In a pentagon ABCDE, angle B = 168, angle C:angleD = 23:25 and AB//ED. Find angle C and angle D.
*December 24, 2012 by Anonymous*

**physics**

A 30kg box of vegetable moves down a 35 degree frictionless inclined. Find the resultant force down the inclined and the acceleration down the inclined
*May 14, 2011 by Fate*

**Chemistry**

Please help! A drop of oil (volume 0.05 cm3) is released from a medicine dropper on to the calm surface of a pond where it spreads out to cover an area of 40 cm2. Assume that the oil film has a uniform thickness equal to the diameter of an oil molecule. Calculate the diameter ...
*February 22, 2007 by Bean*

**Physics**

You are at standing at a window in the University tower that is 42.0 meter above the ground. Your physics professor (who is 2.12 m tall) is walking on the ground below, approaching to tower at a speed of 1.12 m/s. You are holding an egg, which you would like to drop on your ...
*March 2, 2014 by Yarielis*

**Statistics**

The daily water consumption for an Ohio community is normally distributed with a mean consumption of 750,000 gallons and a standard deviation of 80,000 gallons. The community water system will experience a noticeable drop in water pressure when the daily water consumption ...
*October 10, 2011 by Michael *

**vb programing**

I need help to create a project for vb auto center from Programming in Visual Basic 2008 Chapter 11 pg 468. Write a project to store vehicle information including model, manufacturer, year, and VIN number. Create a second project that load the data from the file into memory ...
*November 16, 2010 by Geri*

**Science**

A drop of oil (volume 0.05cm3) is released from a medicine dropper on to the calm surface of a pond where it spreads out to cover an area of "40cm2". Assume that the oil film has a uniform thickness equal to the diameter of a oil molecule. Calculate the diameter of an oil ...
*March 6, 2007 by Grant*

**Maths**

suppose function f,g,h and l are defined as follow:f(x)=4xsquared-5x+1,g(x)=-1/2x-3,h(x)=squared root(2-x)squared+1/2x,l(x)=square root2-x-3. .write down Df and solve inequality f(x)<0 .write down Dg and solve 4g(x)=8 .write down Dh,Dg+h and solve the (g+h)(x)=0 .write down...
*June 6, 2011 by Joel*

**Physics**

A rescue plane wants to drop supplies to isolated mountain climbers on a rocky ridge 235 m below. Assume the plane is traveling horizontally with a speed of 195 km/h (54.2 m/s). Suppose, instead, that the plane releases the supplies a horizontal distance of 425 m in advance of...
*September 17, 2011 by Bridge*

**math**

Sam bought 1 of 250 tickets selling for $2 in a game with a grand prize of $400. Was $2 a fair price to pay for a ticket to play this game?
*October 9, 2009 by Aleah*

**math**

Sam bought 1 of 250 tickets selling for $2 in a game with a grand prize of $400. Was $2 a fair price to pay for a ticket to play this game? no
*January 17, 2010 by Rmz*

**Math**

Sam bought 1 of 250 tickets selling for $2 in a game with a grand prize of $400. Was $2 a fair price to pay for a ticket to play this game.
*March 30, 2010 by Mikey*

**MATH**

Sam bought 1 of 250 tickets selling for $2 in a game with a grand prize of $400. Was $2 a fair price to pay for a ticket to play this game?
*April 1, 2010 by P-Dub*

**college statistics**

I am having a bit of trouble with some of the questions. Some of the ones I put below have an answer, is there anyway you can check the answer and help me with the rest I am having trouble with. Your sociology teacher claims that 60 percent of American males are married. You ...
*July 18, 2013 by penelope*

**english**

what is the adjective in this sentence: the rhythm section of a jazz band usually includes a piano and drums . also could you tell me if it has a proper adjective in it or not CAPITALIZE it if it is ...................please and thank you ttyl .syl.........
*January 27, 2009 by kashmira*

**Math**

Jerrod started saving money in his piggy bank. The first 2 months he saved $56. After 6 months he had saved $168. What is the depends on statement in this problem?
*October 17, 2012 by HELPP!! *

**Geography**

on fur seals Breeding when where what how food chain destription including coping with a harsh environment may be a relivent question to mine I will check
*July 25, 2005 by stephanie*

**math-algebra**

14. The last term of an arithmetic sequence is 207, the common difference is 3, and the number of terms is 14. What is the first term of the sequence?: A. 165 B. 171 C. 249 D. 168 Please explain. thanks
*September 26, 2007 by Anonymous*

**MATH Prob.**

Sam bought 1 of 250 tickets selling for $2 in a game with a grand prize of $400. Was $2 a fair price to pay for a ticket to play this game?
*August 11, 2009 by Twg*

**math**

sam bought 1 of 250 tickets selling for $2 in a game with a grand prize of 400 dollars. Was $2 a fair price to pay for a ticket to play this game?
*August 19, 2012 by mike*

**bus stats**

A manufacturing company has 5 identical machines that produce nails. The probability that a machine will break down on any given day is .1. Define a random variable X to be the number of machines that will break down in a day. a. what is the appropriate probability ...
*March 25, 2011 by Mich Mich*

**Physics**

The force exerted by the floor of an elevator on the foot of a person standing on it is more than the weight of the person if the elevator is 1.going up and slowing down 2.going up with constant speed 3.going down and speeding up 4.going down and slowing down
*November 2, 2012 by Ajai*

**Physics**

1. A model of a helicopter rotor has four blades, each 2.50 m in length from the central shaft to the blade tip and is rotated in a wind tunnel at 1800 rev/min, a. what is the linear speed of the blade tip in m/s? b. what is the radial acceleration of blade tip?
*February 15, 2012 by Ryan*

**physics**

A steel wire in a piano has a length of 0.6000 m and a mass of 3.000 10-3 kg. To what tension must this wire be stretched so that the fundamental vibration corresponds to middle C (fC = 261.6 Hz on the chromatic musical scale)?
*December 1, 2011 by jim*

**english**

write the dependent clause and the subordinate conjunction 1) If you want to play the piano better (depend),you have to practrice.(subordinate) 2) Justin saved his money (dep) inorder that he could go to college. (sub)
*April 26, 2012 by JOSEPH*

**english**

Select the gerund phrase in the sentence below. Then, determine the noun function of the gerund. 1. Water skiing, sailing, and swimming are my favorite summer sports. 2. I enjoy playing the piano.
*November 16, 2012 by amber*

**Physics**

Gayle runs at a speed of 3.80 m/s and dives on a sled, initially at rest on the top of a frictionless snow covered hill. After she has descended a vertical distance of 5.00 m, her brother, who is initially at rest, hops on her back and together they continue down the hill. ...
*October 17, 2010 by A*

**Physics URGENT!!!**

Gayle runs at a speed of 9.00 m/s and dives on a sled, initially at rest on the top of a frictionless, snow-covered hill, that has a vertical drop of 20.0 m. After she has descended a vertical distance of 4.00 m, her brother, who is initially at rest, hops on her back, and ...
*October 17, 2012 by Anonymous*

**Physics URGENT!!!**

Gayle runs at a speed of 9.00 m/s and dives on a sled, initially at rest on the top of a frictionless, snow-covered hill, that has a vertical drop of 20.0 m. After she has descended a vertical distance of 4.00 m, her brother, who is initially at rest, hops on her back, and ...
*October 19, 2012 by Anonymous*

**physics**

Gayle runs at a speed of 3.80 m/s and dives on a sled, initially at rest on the top of a frictionless snow covered hill. After she has descended a vertical distance of 5.00 m, her brother, who is initially at rest, hops on her back and together they continue down the hill. ...
*October 8, 2015 by jovelyn trocio*

**physics**

gayle runs at a speed of 4.00 m/s and dives on a sled, initially at rest on the top of a frictionless, snow-covered hill. after she has descended a vertical distance at a 5.00 m, her brother,who is initially at rest, hops on her back, and they continue down the hill together, ...
*October 8, 2015 by naome*

**Science**

1. A student lifts his 2.0-kg pet rock 2.8m straight up. He then lets it drop to the ground. Use the Law of Conservation of Energy to calculate how fast the rock will be moving ..... a. half way down b. just before it hits the ground 2. A 65-kg girl is running with a speed of ...
*November 19, 2014 by Hershey*

**Physics**

1. A student lifts his 2.0-kg pet rock 2.8m straight up. He then lets it drop to the ground. Use the Law of Conservation of Energy to calculate how fast the rock will be moving ..... a. half way down b. just before it hits the ground 2. A 65-kg girl is running with a speed of ...
*November 21, 2014 by Hershey*

**PLEASE- physics**

You are standing at the top of a cliff that has a stairstep configuration. There is a vertical drop of 6 m at your feet, then a horizontal shelf of 10 m, then another drop of 4 m to the bottom of the canyon, which has a horizontal floor. You kick a 0.76 kg rock, giving it an ...
*September 15, 2015 by Anonymous *

**chemistry**

If the stockroom fails to dry the KHP to remove the waters of hydration, the student's calculated concentration for the standardized base will be (low, high, or unaffected) A drop of NaOH is hanging from the buret tip before the titration of KHP. Once the student begins the ...
*April 1, 2008 by Confused*

**chemistry**

If the stockroom fails to dry the KHP to remove the waters of hydration, the student's calculated concentration for the standardized base will be (low, high, or unaffected) A drop of NaOH is hanging from the buret tip before the titration of KHP. Once the student begins the ...
*April 18, 2010 by help*

**English Riddle**

my hands constitute my career. when i was young, i practiced for hours to master the great composers. I decided long ago that "tickling the ivories" would be the key to my success. Who am I? Please help! I came up with "piano" but im not sure...
*January 20, 2015 by Mary*

**englsi**

My english is very very bad ,please helpm me to fix this paragraph. To catch the king interest, every night she must come up with unique and fresh idea. Mercy and Wisdom is very important elements in her stories and how different characters of the stories succeed to save their...
*October 16, 2010 by Anonymous*

**Algebra**

According to the Guiness Book of World Records, the peregrine falcon has a record diving speed of 168 miles per hour. Write the speed in feet per second.
*October 15, 2007 by Mary*

**chemistry**

Once the stationary phase is packed in the column, it is important that the solvent level not drop below the upper level of the stationary phase. Why? A. Air molecules are so polar the entire mixture moves completely through the column. B. If the stationary phase dries out, ...
*April 12, 2008 by mia*

**5 grade math**

ryan practiced piano for 3/10 of an hour and soccor for 1/2 an hour. in simplest form, how long did he practiced altoghter
*February 3, 2012 by dk*

**Barkerville**

Would you have preferred to mine or to operate a business that supported the miners, if you had been an inhabitant of Barkerville during its gold rush? I would have chosen to operate my own business to support the miners. By choosing to run my own business, I could help and ...
*June 8, 2011 by Emma*

**Physics Urgent!!**

a bungee jumper is falling at a velocity of 2m/s [down] when the bungee cord just starts to stretch. after the cord stretches for 2.5s, the velocity is 11m [down]. assume that the acceleration is at constant. a) what is the acceleration of the jumper? b) what is the total time...
*February 22, 2015 by emily*

**Math**

Piano lessons cost $30 per lesson. Find ordered pairs that represent the total cost for x number of lessons.
*June 15, 2015 by Cordarius *

**physics**

The ability to hear a "pin drop" is the sign of sensitive hearing. Suppose a 0.50 g pin is dropped from a height of 27 cm, and that the pin emits sound for 1.4 s when it lands. Assuming all of the mechanical energy of the pin is converted to sound energy, and that the sound ...
*May 26, 2012 by Mike*

**physics**

The ability to hear a "pin drop" is the sign of sensitive hearing. Suppose a 0.40 pin is dropped from a height of 30 , and that the pin emits sound for 1.4 when it lands. Assuming all of the mechanical energy of the pin is converted to sound energy, and that the sound radiates...
*May 28, 2012 by JessicaP*

**writing**

is there another way to rephrase this sentence in a good way. --- All I ever heard about this Grand Canyon thing was that it is piled up with humongous rocks and composed of fossils. thank you!
*November 8, 2011 by Sara*

**Physics urgent help have a test!!!**

1. a little spider monkey named flo has stolen a bunch of bananas from her older brother Charley and is now running away frm him with the bananas in hand. She sees salvation in a long vine and grabs the bottom, hoping to swing away a) if she has a mass of 5.3kg and the bananas...
*April 9, 2011 by deepti*

**Derivatives**

I have gotten so many different responses from mine on this question Can someone PLEASE write out the steps for me for this. Thanks f'(x)= 2x/(x^2+1) Find the second derivative. I get 4x^3 + x^2- 12x + 1
*May 6, 2013 by Alaina*

**math**

A class of students do 1 of 4 different after school activities. 1/2 play soccer, 7 take karate, 9 do art or piano. How many students are in the class.
*December 19, 2012 by reece*