Wednesday

September 28, 2016
Number of results: 15,740

**math**

a piano has 88 keys.show with numbers the probability of hitting a particular key if you shut your eyes and strike a key.

*March 12, 2012 by gabriel*

**math**

paul spends 2/3 of an hour exercising and 1/2 hour practicing the piano each day what is the least common denominator of these fractions?.

*September 17, 2012 by jammy*

**math**

Car jacks are constructed like a rhombus. When used to raise a car, the rhombus is seen. If the sides of the rhombus are 13 inches, what is the maximum lenght of the shaft

*October 10, 2009 by Deborah *

**Physics**

The ability to hear a “pin drop” is the sign of sensitive hearing. Suppose a 0.55-g pin is dropped from a height of 28 cm, and that the pin emits sound for 1.5s when it lands. Assuming all of the mechanical energy of the pin is converted to sound energy, and that the sound ...

*March 8, 2016 by Cameron Arnold*

**Physics**

A 22-ohm resistor and a 33-ohm resistor are connected in series and placed across 120-V potential difference. 1. what is the equivalent resistance of the circuit? R = RA + RB R = 22-ohm + 33-ohm R = 55-ohm 2. what is the current in the circuit? I = Vsource/ RA + RB I = 120/ 55...

*February 12, 2010 by Priscilla*

**chemistry**

A 40.4 g sample of a gas with the empirical formula C5H12 occupied a volume of 3070 mL with a pressure of 5016.0 torr at 168 °C. Enter the molecular formula of the compound.

*January 17, 2010 by Tasha*

**AP 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 0.49 kg rock, giving it an ...

*October 14, 2015 by MJay*

**Physics**

I have a formula for inertia torque T(inertia) = .09 x Wk^2(inertia)/S(stops) x t(move)^2 This is a shaft that indexes 36 degrees at a time so that how we determine 10 stops for S. I do not know where the factor .09 comes from. Can you explain

*June 25, 2010 by Bob*

**Physics**

I have a formula for inertia torque T(inertia) = .09 x Wk^2(inertia)/S(stops) x t(move)^2 This is a shaft that indexes 36 degrees at a time so that how we determine 10 stops for S. I do not know where the factor .09 comes from. Can you explain

*June 25, 2010 by Bob*

**Math**

A piano tuner uses a tuning fork. If middle C has a frequency of 264 vibrations per second, write an equation in the form for the simple harmonic motion.

*October 9, 2006 by Lisa*

**math**

Your state charges 5% sales tax on product on nonfood items. You're buying a light bulb for $3.00, cereal for $2.50, and an orange for $.50. What will be the grand total of your bill?

*October 20, 2015 by Anonymous*

**Geometry**

1. Television screens are sized according to the length of a diagonal across the screen, from one corner to another. The screen of a 2 inch wide screen TV is 24.5 inch high. How wide is it? 2. A carpenter needs to build a stairway down to a basement in a house under ...

*April 29, 2016 by Terrell*

**Physics**

You are standing at the top of a cliff that has a stair step configuration. There is a vertical drop of 7 m at your feet, then a horizontal shelf of 8 m, then another drop of 3 m to the bottom of the canyon, which has a horizontal floor. You kick a rock, giving it an initial ...

*February 5, 2013 by chris*

**Math**

A piano has 88 keys. Show with numbers the probability of hitting a particular key if you shut your eyes and strike one key.

*April 3, 2009 by Tyler*

**Physics**

A steel piano wire, of length 1.0 m and mass 4.4 g is stretched under a tension of 650.0 N. What is the speed of transverse waves on the wire?

*May 6, 2013 by Maegan*

**Physics**

A steel piano wire, of length 1.0 m and mass 4.4 g is stretched under a tension of 650.0 N. What is the speed of transverse waves on the wire?

*May 6, 2013 by Maegan*

**Francais**

Comment s'appelle le grand batiment en haut de la falaise? Il est la falaise du Natrel?

*February 15, 2011 by Frenchy*

**criminal law**

What is the purpose of a grand jury issuing a true bill (criminal charge) or not.

*January 19, 2015 by kirsten*

**Chemistry**

Drops of mercury, water and naphtha (lighter fluid) are placed on smooth flat surface. The mercury drop is almost a perfect sphere. The water drop is a flattened sphere. The naphtha however spreads out over the surface. What do these observations tell you about the cohesive ...

*July 7, 2009 by Mohammedabbas*

**Math**

during one drive a high school football team lost 3 yards on the first down, lost 5 yards on the second down, then gained 15 yards on the third down. how many yards do they need to get a first down? should they go for it or punt?

*September 11, 2013 by Evelyn*

**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 Don't know if I answer this ...

*August 25, 2012 by Anonymous*

**physics**

A boulder in a river has weight of 65N. It displaces a volume of water with a weight of 10N. Which is the net force on this rock? 55 N down 65 N down 75 N up 75 N down

*April 17, 2012 by Carter*

**math and physics**

if drop down an stone -that it is like a ball- into the slush and if it was soft enough stone come into the slush in some distance, if throw it away from a certain height to comes into slush and if we want stone to come into slush 2 times more than before from what hight ...

*December 21, 2011 by farnoosh*

**English**

GOP, Democrats Support Closing US Embassies (How do we read GOP? 1. Grand Old Party 2. G.O.P.)

*August 4, 2013 by rfvv*

**high school grade 3**

if drop down an stone -that it is like a ball- into the slush and if it was soft enough, stone come into the slush in some distance, if throw it away from a certain height to comes into slush and if we want stone to come into slush 2 times more than before, from what hight ...

*December 20, 2011 by farnoosh*

**french**

why is it not la grande-mere but la grand-mere since it is feminine?

*March 5, 2008 by michelle*

**math**

In Lewis Carroll's Through The looking Glass, Tweedledum says, "the sum of your weight and twice mine is 361 pounds". Tweedledee replies, "The sum of your weight and twice mine is 362 pounds". Find both weights. ONLY AN ALGEBRAIC SOLUTION WILL BE ACCEPTED let e= tweedledee ...

*February 8, 2014 by B8*

**physics**

A rescue plane wants to drop supplies to isolated mountain climbers on a rocky ridge 235 m below. The plane is traveling horizontally with a speed of 280 km/h (77.8 m/s). (b) Suppose, instead, that the plane releases the supplies a horizontal distance of 425 m in advance of ...

*September 26, 2009 by DJ*

**Physics - HELP**

A rescue plane wants to drop supplies to isolated mountain climbers on a rocky ridge 235 m below. The plane is traveling horizontally with a speed of 280 km/h (77.8 m/s). (b) Suppose, instead, that the plane releases the supplies a horizontal distance of 425 m in advance of ...

*September 27, 2009 by Anonymous*

**physics**

A rescue plane wants to drop supplies to isolated mountain climbers on a rocky ridge 235 m below. The plane is traveling horizontally with a speed of 280 km/h (77.8 m/s). (b) Suppose, instead, that the plane releases the supplies a horizontal distance of 425 m in advance of ...

*September 27, 2009 by DJ*

**Physics**

Four capacitors are connected in series with a battery, as in the figure below, where C1 = 3.24 µF, C2 = 6.11 µF, C3 = 12.1 µF, C4 = 25.0 µF, V = 18.4 V. (a) Calculate the capacitance of the equivalent capacitor. µF (b) Compute the charge on C3. µC (c) Find the voltage drop ...

*September 17, 2010 by Max*

**math**

Nolan practices the piano for 1 2/5 hours every Saturday and Sunday. How long does he practice each weekend? Express your answer in hours and minutes.

*March 17, 2015 by andy *

**ethics**

Which of the skills that Phil Connors (Bill Murray) learns in the course of his time in the Groundhog Day loop would be considered a “practice” according to MacIntyre’s account? Is it Playing piano?

*August 10, 2014 by Darcy Deagan*

**Science**

Can you help with this one please? A drop of oil (vol 0.05cm^3) is released on to a calm surface of a pond where it spreads out and covers an area of 40 cm^2. Assume the oil film has uniform thickness equal to the diameter of an oil molecule. Calculate the diameter of an oil ...

*February 5, 2007 by Bruce*

**grand canyon**

Draw a scatterplot indicating a strong negative relationship between the variables of income and mental illness. Be sure to label the axes correctly

*July 20, 2012 by cathy*

**Socials Studies **

What was the outcome of the five year war between France and Spain and What country did Spanish troops ally with to fight napoleon's grand armee?

*January 20, 2015 by Jack*

**chemistry**

I have a problem that I need help with. The diameter of the oil molecule has to be calculated and presented in scientific notation. The data in the questions tells me that drop of oil(volume 0.05cm ^3) is released from a dropper onto the surface of the water.The film of oil ...

*February 4, 2007 by ruby*

**Physics**

Upon spotting an insect on a twig overhanging water, an archer fish squirts water drops at the insect to knock it into the water. Although the insect is at distance d from the fish along a straight-line path at angle $ (as in the figure here), a drop must be launched at a ...

*September 13, 2010 by Antonio*

**French**

"a huge interest in the culture" would that be "un grand interet dans la culture?" or is there a better way to phrase it? Thanks

*June 8, 2009 by MK*

**Statistics **

The probability distribution of the number of accidents in Grand Rapids, Michigan, each day is given by x 0 1 2 3 4 5 P(x) .20 .15 .25 .15 .20 .05 This distribution is an example of:

*October 10, 2012 by Tyson*

**criminal justice**

Explain why a grand jury is used rather than the prosecutor simply issuing a criminal charge.

*January 19, 2015 by kirsten*

**Anatomy & Physiology**

Okay, heres one of those questions that isn't easily found in lab manuals and text books (atleast mine). ALSO, if you have a source, could you please show me? It might come down to me having to prove the teacher that i'm right, that is if you're right. There are 3 questions: 1...

*February 23, 2009 by Akashic*

**Chemistry**

What is the calculated value of the partial pressure (atm) of O2 in acid mine water of pH 2.500, in which [Fe3+] = [Fe2+]?

*April 10, 2010 by Laura*

**A Peculiar Question**

Is a database basically a gathering of information? I gathered mine from the internet, but I don't whether it is considered plagiarism or not. Is it?

*January 21, 2014 by Anonymous*

**Chemisty**

How much bauxite (Al2O3) would you have to mine if you wanted to obtain 100.0 g Al metal from the ore?

*May 10, 2016 by Nita *

**Physics HELPPP PLEASEEE**

A 0.60 kg sphere rotates around a vertical shaft supported by two strings, as shown. If the tension in the upper string is 18 N. Calculate the tension in the lower string? the rotation rate (in rev/min) of the system?

*May 19, 2013 by Joeline*

**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*

**english (Adverbs and Other Parts of Speech)**

13. In which of the following sentences is the word down used as an adverb? A. Ricky rolled down the car window to place his order at the coffee shop. B. Gail fell down the steps because she tripped on her untied shoelace. C. The ball moved down the street towards the ...

*April 18, 2016 by cassy*

**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**

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*

**science**

The 140-million year-old fossil of a tortoise was recently found about 700 meters deep in a coal mine in northeast china. Scientists studying the fossil believe that it represents a previously unknown species? Which of the following is the best conclusion based on the data ...

*June 5, 2016 by kizzi*

**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*

**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*

**Chemistry**

How many grams of cesium chloride (CsCl) will be needed to make 750. mL of a 0.100 M CsCl aqueous solution? The formula mass of CsCl is 168.36 g/mol

*June 5, 2016 by Eddie*

**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*

**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*

**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*

**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*

**U.S History**

Don't You Push Me Down Words and Music by Woody Guthrie Well you can play with me And you can hold my hand. We can skip together Down to the Pretzel man You can wear my mommy's shoes Put on my daddy's hat You can even laugh at me But don't you push me down. Don't you push me...

*March 2, 2016 by Jonathan*

**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*

**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*

**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*

**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*

**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**

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*

**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*

**newton**

the sum of the first 12 terms of an AP is 168.if the third term is 7,find the value of common difference and first term

*August 10, 2016 by isaac*

**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*

**mathematics**

The sum of first m terms of an A.P is 5m²+3m. If its nth term is 168. Find the value of m. Also find the 20th term.

*February 13, 2016 by seema ramsing*

**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*

**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*

**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*

**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*

**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**

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*

**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*

**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*

**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*

**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*

**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*

**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*

**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*

**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*