Sunday

April 20, 2014

April 20, 2014

Number of results: 14,290

**physics**

Complete the following. (a) 1.57 105 km/h2 = km/h·s (b) 1.57 105 km/h2 = m/s2 (c) 37 mi/h = ft/s (d) 37 mi/h = m/s I dont understand how to convert these i have tried to convert them and i got them all wrong please help! Thanks
*Sunday, September 12, 2010 at 2:52pm by MeganErin*

**college Algebra**

3 d + 5 a + 1 t = 105 6 d + 0 a + 2 t = 105 2 d + 4 a + 3 t = 105 that zero in the middle will help coef matrix | 3 5 1 | | 6 0 2 | = 20+24-24-90 = -70 det | 2 4 3 | | 105 5 1 | | 105 0 2 | is the same as | 105 4 3 | | 1 5 1 | | 1 0 2 |times 105 = 105(10+4-8-15)=-945 | 1 4 3...
*Friday, December 13, 2013 at 7:57pm by Damon*

**PHYSICS - HELP**

A wind with speed 45 m/s blows across a roof 20 m long and 12 m wide. The pressure inside the room is 1 atm. What is the net force on this roof due to the pressure difference inside and outside the roof? (The density of air is equal to 1.3 kg/m3.) Question 1 options: A) 2.4 ...
*Wednesday, August 10, 2011 at 3:29pm by Deana*

**Physics**

A bicycle tire whose volume is 4.1 x 10-4 m3 has a temperature of 296 K and an absolute pressure of 4.69 x 105 Pa. A cyclist brings the pressure up to 6.75 x 105 Pa without changing the temperature or volume. How many moles of air must be pumped into the tire?
*Friday, December 1, 2006 at 12:41am by maysam*

**Science**

A circular hatch in the hull of a submarine has a radius of 40.0 cm. The submarine is 850.0 m under water. If atmospheric pressure above the ocean is 1.01 x 105 Pa and the air pressure inside the submarine is 1.31x 105 Pa, what net force is exerted on the hatch? (ρsw = ...
*Monday, December 19, 2011 at 9:46pm by Zoe*

**Physics**

A circular hatch in the hull of a submarine has a radius of 40.0 cm. The submarine is 850.0 m under water. If atmospheric pressure above the ocean is 1.01 x 105 Pa and the air pressure inside the submarine is 1.31x 105 Pa, what net force is exerted on the hatch? (ρsw = ...
*Monday, December 19, 2011 at 2:27pm by Sally*

**Chemistry.**

Ca(HCO3)2(s)-> CaCO3(s) + H2O(g) + CO2(g) Total pressure is 0.235 bar. Since the mole ratio is 1:1, the partial pressure H2O and partial pressure of CO2 must be the same; therefore, 2x = 0.235 and x = 0.235/2. Then Kp = P(CO2)*P(H2O) = ?? b). .....CO2 + H2O ...0.105 bar..0...
*Monday, November 22, 2010 at 4:14pm by DrBob222*

**Chemistry**

A sample of gas occupies 24.5 L at a pressure of 1.57 atm; what is the pressure if the volume is increased to 48.3 L?
*Wednesday, January 9, 2013 at 6:41pm by Kayla*

**chemistry**

A sample of oxygen occupies 10.0 L under a pressure of 105 kPa. At what pressure will it occupy 13.4 L if the temperature does not change?
*Wednesday, May 19, 2010 at 8:16pm by maria*

**physics**

A driver measures her "cold" tire gauge pressure to be 1.95 105 Pa. The measurement is made before driving, when the tires are at the temperature of the surroundings, 21.7° C. After driving several miles, she checks the gauge pressure again and finds that it has increased to 2...
*Friday, April 15, 2011 at 1:49pm by ECU*

**applied chemistry**

A sample of oxygen occupies 10.0 L under a pressure of 105 kPa. At what pressure will it occupy 13.4 L if the temperature does not change?
*Tuesday, August 3, 2010 at 10:38pm by chris*

**Chemistry**

An ideal gas is allowed to expand from 6.00 L to 45.0 L at constant temperature. By what factor does the volume increase? ? Number The pressure will Increase by that factor or decrease by that factor? If the initial pressure was 105 atm, what is the final pressure?
*Tuesday, October 16, 2012 at 10:08pm by Bill*

**biology**

What must the systolic blood pressure be valued at for adequate mean arterial pressure if the diastolic pressure is 75? (Assume resting conditions) A. at least 90 B. at least 95 C. at least 100 D. at least 105 E. at least 110 F. at least 115 G. at least 120
*Wednesday, April 11, 2012 at 11:02am by Jim*

**Chemistry**

If 0.75 g of a gas dissolves in 1.0 L of water at 20.0 kPa of pressure, how much will dissolve at 105.4 kPa of pressure?
*Monday, March 17, 2014 at 7:41pm by Anonymous*

**physics**

An automobile tire has a volume of 1.60 x 10-2 m3 and contains air at a gauge pressure (pressure above atmospheric pressure) of 167 kPa when the temperature is 0.00°C. What is the gauge pressure (in kPa) of the air in the tires when its temperature rises to 27.0°C and its ...
*Wednesday, April 1, 2009 at 8:31pm by chirayu*

**thermal physics**

An automobile tire has a volume of 1.60 x 10-2 m3 and contains air at a gauge pressure (pressure above atmospheric pressure) of 167 kPa when the temperature is 0.00°C. What is the gauge pressure (in kPa) of the air in the tires when its temperature rises to 27.0°C and its ...
*Thursday, April 2, 2009 at 2:04am by sweety*

**math**

Have you noticed that 57|1995? (reads 57 divides 1995) This means that 1995/57 leaves no remainder. This means that 1995/57 will also leave 75 as a remainder. Since 75 > 57, we will say that the remainder when the original integer is divided by 57 is actually 75-57=18.
*Thursday, November 17, 2011 at 10:42pm by MathMate*

**chemistry**

What is the final pressure gas sample that is subjected to a temperature change from 22.0 C to 30.0 C and a volume change from 85.4 L to 37.0 L with an initial pressure 105 kPa?
*Tuesday, April 30, 2013 at 8:51pm by SK*

**Calculus**

It appears you are not familiar with the function notation. In short if C(x) = 5000+10x+0.05x^2 then C(105) = 5000 + 10(105) + .05(105)^2 (whenever an x appeared, we replaced it with 105, the same thing with C(100) )
*Saturday, October 27, 2007 at 10:08pm by Reiny*

**Math**

2.50x + 1.75y < or = to 15 y < or = 1.43x + 8.57 y = 8.57 I'm having a brain cramp and trying to find x has been a lost time tonight. Plese help what is x The second inequality can be derived from the first one. The third statement, y=8.57, does not follow from the ...
*Tuesday, May 8, 2007 at 9:50pm by Amanda*

**Chemistry 105**

A sample of nitrogen gas in a 1.86-L container exerts a pressure of 1.32 atm at 20 C. What is the pressure if the volume of the container is maintained constant and the temperature is raised to 354 C?
*Sunday, October 23, 2011 at 5:30pm by JULIE*

**Calculus**

x^5 - 7 = 50 - 2x x^5 + 2 x - 57 = 0 y = x^5 + 2 x - 57 if x = 2 y = 32 +4 - 57 = negative number if x = 3 y = 81*3 + 6 - 57 = positive number the polynomial is continuous so somewhere in there y was zero
*Friday, February 8, 2013 at 2:25am by Damon*

**chem**

i don't get this at all can you please show me how to do this problem: a sample of oxygen occupies 10.0 L under a pressure of 105 kPa. at what pressure will it occupy 13.4 L if the temperature does not change. please help me set it up
*Thursday, May 14, 2009 at 6:33pm by melissa*

**statistics**

what is the standard deviation using the rule of thumb for the following set? 57 61 57 57 58 57 61
*Friday, November 25, 2011 at 1:01pm by amy*

**Physics**

V*t = 57 m. 330 * t = 57, t = 57/330 = 0.173 s. = Time for sound to travel 57 m. T = 4.10 - 0.173 = 3.927 s. = Time for rock to travel 57 m. V*T = 57 m. V = 57 / T = 57 / 3.927 = 14.5 m/s. = Speed of rock.
*Tuesday, February 7, 2012 at 11:59am by Henry*

**Calculus**

The cost (in dollars) of producing x units of a certain commodity is c(x)=5000+10x+0.05x^2 Find A=100 to x=105 so far i got y-y/x-x= C(105)-C(100)/105-105 i don't understand how it comes out to be 101.25/5 please help me
*Saturday, October 27, 2007 at 10:08pm by THU*

**Physics**

A steam engine goes through the following 3 step process. I) Isobaric compression from a volume of 100 L to 10 L at a pressure of 4 x 105 Pa II) Isovolumetric process from a pressure of 4 x 105 Pa to a pressure of 4 x 106 Pa at a volume of 10L. III) An isothermal expansion ...
*Monday, December 11, 2006 at 2:57pm by Eric*

**Physics**

Saturn’s largest moon, Titan, is actually larger than the planet Mercury. It is also one of the few bodies in the solar system that has a dense atmosphere. Data from the Voyager 1 probe indicates that the atmospheric pressure on Titan’s surface is about 1.60 x 105 Pa, even ...
*Monday, December 19, 2011 at 2:28pm by Amy*

**Physics**

At what depth beneath the surface of a lake is the absolute pressure 2 times the atmospheric pressure of 1.01 105 Pa that acts on the lake's surface?
*Saturday, November 3, 2007 at 12:25am by pete*

**Chemistry 105**

A sample of gas has an initial volume of 33.0 L at a pressure of 1.1 atm. If the sample is compressed to a volume of 10.0 L, what will its pressure be? (Assume constant temperature.)
*Sunday, October 23, 2011 at 5:24pm by JULIE*

**Chemistry**

A 69.4 L cylinder containing C2H6 at a pressure of 570 torr is connected by a valve to 105 L cylinder containing C6H6 at 0.350 atm pressure. Calculate the partial pressure (atm) of C6H6 when the valve is opened.
*Saturday, April 16, 2011 at 4:31pm by itsliferight*

**ALGEBRA 1**

a. y = 7(15 + x) y = 105 + 7x y - 105 = 7x 1/7y - 105/7 = x X DOES NOT EQUAL 1/7y - 15. You didn't distribute the 7 to 15. Remember to distribute to all on the equation, not just the x! b. 210 = 105 + 7x 105 = 7x x = 105/7 = 15 minutes practicing new song
*Monday, October 7, 2013 at 8:16pm by answerhalp*

**statistics**

Compare the two sets and describe what you discover. 57,61,57,57,58,57,61 61,52,69,64,46,54,47,
*Friday, March 26, 2010 at 9:43pm by shelly*

**statistic**

Compare the two sets and describe what you discover. 46, 47, 52, 54, 61, 64, 69 57, 57, 57, 57, 58, 61, 61
*Thursday, April 18, 2013 at 10:16pm by kylee*

**math-triangle help**

This is how I would do it. Pythagorean theorem: a2 + b2 = c2. a^2 + 4^2 = 11^2 a^2 +16 = 105 subtract both sides by 16 a^2 - 16 = 105 - 16 a^2 = 105 a = sqrt 105 a = 10.247
*Tuesday, November 20, 2007 at 8:55pm by Kelly*

**Math**

Find the value of x. The area of a rectangle = 105 The length is 2x+1 Width is x __________________________________ I tried solving it : Arec = l x w 105 = (2x+1)x 105 = 2x^2 + x 0= 2x^2 + x - 105 This is where I get stuck on...
*Friday, November 4, 2011 at 2:39am by Lynn*

**Chemistry**

1. The vapor pressure, P of a certain liquid was measured at two temperatures, T. from this data: T(K) and P(kpa) 275 3.57 825 6.57 for the enthalpy how would this be plotted on the graph point 1: point 2: 2. What is the rise, run, and slope 3. What is the enthalpy of ...
*Saturday, July 9, 2011 at 7:26pm by Josh *

**Statistics**

What is the stardard deviation using the rull of thumb for each set of numbers: 57,61,57,57,58,57,61 61,52,69,64,46,554,47
*Sunday, July 25, 2010 at 7:59pm by Jay*

**Chemistry 105**

A heliox deep-sea diving mixture contains 2.0 g of oxygen to every 98.0 g of helium. What is the partial pressure of oxygen when this mixture is delivered at a total pressure of 9.3 atm?
*Sunday, October 23, 2011 at 5:27pm by JULIE*

**statistics**

Find the standard deviation using the rule of thumb for each of the data sets 57,61,57,57,58,57,61 61,52,69,64,46,54,47
*Friday, March 26, 2010 at 9:44pm by shelly*

**staticitics**

Standard deviation for the following sets and compare the differences. first 7 #'s 57 61 57 57 58 57 61 second 7#'s 61 52 69 64 46 54 47
*Tuesday, March 30, 2010 at 12:01pm by Dannette Fulcher *

**stat**

Standard deviation for the following sets and compare the differences. first 7 #'s 57 61 57 57 58 57 61 second 7#'s 61 52 69 64 46 54 47
*Monday, April 12, 2010 at 7:49pm by Dannette Fulcher *

**statistics**

Find the standard deviation using the rule of thumb for each of the data sets 57,61,57,57,58,57,61 61,52,69,64,46,54,47
*Friday, March 26, 2010 at 9:44pm by Jone*

**statistics**

Put the scores in order of value to better analyze the data. 57, 57, 57, 57, 58, 61, 61 46, 47, 52, 54, 61, 64, 69 What differences/similarities do you see?
*Sunday, May 2, 2010 at 4:50pm by PsyDAG*

**statistcs**

Find the standard deviation using the rule of thumb for each of the data sets. First 7: 57 61 57 57 58 57 61 Second 7: 61 52 69 64 46 54 47
*Sunday, August 14, 2011 at 8:13pm by Anonymous*

**statistics**

1.what is the standard deviation of these values first 7:57,61,57,57,58,57,61 and second 7:61,52,69,64,46,54,47 2. compare the two sets and describe what you discover.
*Tuesday, April 3, 2012 at 4:58pm by favor*

**math 156**

Ok, I got that there are 105 15's in 1575 making the rest 105*8=840 105*7=735 right?
*Wednesday, December 9, 2009 at 3:49pm by Rmz*

**ap chemistry**

1.95 mol of an ideal gas at 300 K and 3.00 atm expands from 16 L to 28 L and a final pressure of 1.20 atm in two steps: (1) the gas is cooled at constant volume until its pressure has fallen to 1.20 atm, and (2) it is heated and allowed to expand against a constant pressure of...
*Wednesday, October 31, 2012 at 6:06pm by cheri*

**Chemistry(Please help)**

The vapor pressure of diethyl ether is 463.57 mm Hg at 25 degrees celsius. How many grams of aspirin C9H8O4, a non volatile nonelectrolyte (mw=180.1g/mol), must be added to 216.7g of ether to reduce the vapor pressure to 453.74 mm Hg. Ether=74.12g/mol so I did 463.57 - 453.74...
*Sunday, February 19, 2012 at 10:48pm by Hannah*

**physics**

A horizontal segment of pipe tapers from a cross sectional area of 50 cm2 to 0.5 cm2. The pressure at the larger end of the pipe is 1.26 105 Pa and the speed is 0.029 m/s. What is the pressure at the narrow end of the segment? Pa Please help! physics - drwls, Monday, April 9, ...
*Tuesday, April 10, 2012 at 3:44pm by Malika*

**Physics**

A horizontal segment of pipe tapers from a cross sectional area of 50 cm2 to 0.5 cm2. The pressure at the larger end of the pipe is 1.26 105 Pa and the speed is 0.029 m/s. What is the pressure at the narrow end of the segment? Pa Please help! physics - drwls, Monday, April 9, ...
*Tuesday, April 10, 2012 at 6:24pm by Malika*

**Physics**

A horizontal segment of pipe tapers from a cross sectional area of 50 cm2 to 0.5 cm2. The pressure at the larger end of the pipe is 1.26 105 Pa and the speed is 0.029 m/s. What is the pressure at the narrow end of the segment? Pa Please help! physics - drwls, Monday, April 9, ...
*Tuesday, April 10, 2012 at 9:28pm by Malika*

**math**

1/5x = 105 x = 105 / (1/5) x = 105 * (5/1) x = 525 I don't think the correct answer is given. Did you copy the problem and the possible answers correctly?
*Tuesday, April 2, 2013 at 6:08pm by Ms. Sue*

**math**

F+ 1/2F+1/4F=100 1.75 FirstCost=100 FirstCost then...100*4/7=400/7=57.14 dollars. Lets check it. 57.14+ 57.14/2 + 57.14/4 =57.14+28.57+14.29 = 100
*Friday, January 7, 2011 at 3:54pm by bobpursley*

**CHEMISTRY**

selenium tetrafluoride, SeF4 is a colorless. it has vapor pressure of 757mmhg at 105 deg c and 522mmhg a 95 deg c. what is the vapor pressure of carbon disulfide at 35 deg c?
*Wednesday, September 19, 2007 at 12:54am by Del*

**math 115**

could someone check my work please? 1.List the factors of each of the following numbers.66 1,11,6 2.Use the following list of numbers for exercises 13 and 14. 0, 1, 15, 19, 23, 31, 49, 55, 59, 87, 91, 97, 103, 105 15,55,105 answer 3.1,55, 1,57, 1,58,1,59,1,61,
*Wednesday, September 2, 2009 at 9:27pm by p*

**Maths**

4/5*(-2/3) = -8/15 4/5* 1/2 = 4/10 = 2/5 1/7* 2/3 = 2/21 LCD = 3*5*7 = 105 -8/15 - 2/5 + 2/21 = -56/105 - 42/105 + 10/105 = -88/105
*Friday, April 20, 2012 at 2:13pm by Steve*

**chem.**

A sample of argon at 300. °C and 50.0 atm pressure is cooled in the same container to a temperature of 0. °C. What is the new pressure? 105 atm 45.5 atm 54.9 atm 23.8 atm 42.7 atm
*Tuesday, September 29, 2009 at 9:19am by Anonymous*

**physics help pleeeeease!!**

A monatomic ideal gas is compressed adiabatically from a pressure of 1.09 105 Pa and volume of 250 L to a volume of 39.0 L. (a) What is the new pressure of the gas? (b) How much work is done on the gas?
*Wednesday, February 16, 2011 at 9:01pm by lissa*

**physics**

Oxygen gas having a volume of 784 cm3 at 23.3°C and 1.03 x 105 Pa expands until its volume is 1170 cm3 and its pressure is 1.07 x 105 Pa. Find (a) the number of moles of oxygen present and (b) the final temperature of the sample. (Unit kelvin, K, for part (b).)
*Friday, April 3, 2009 at 1:17am by sweety*

**physics**

Ignoring ball and hoop diameter, just solve y(x) = -gsec^2(θ)/2v^2 x^2 + tanθ x + h when y(4.57) = 3.05 -9.8 sec^2θ/(2*8^2) * 4.57^2 + tanθ (4.57) + 2.48 = 3.05 -1.6 (1+tan^2θ) + 4.57 tanθ - 0.57 = 0 1.6 tan^2θ - 4.57 tanθ + 2.17 = 0 tan...
*Monday, June 24, 2013 at 9:16pm by Steve*

**math**

i agree with ben. 57/100 is .57 .57 times 109 = X X= 62.13
*Tuesday, October 2, 2007 at 6:53pm by nilam*

**statistics**

Compare the two sets and describe what you see. 1st set: 57 61 57 57 58 57 61 2nd set: 61 52 69 64 46 54 47
*Sunday, May 2, 2010 at 4:50pm by Faith*

**College Physics**

A monatomic ideal gas is compressed adiabatically from a pressure of 1.39 105 Pa and volume of 260 L to a volume of 39.0 L. What is the new pressure of the gas?
*Tuesday, December 6, 2011 at 7:21pm by John*

**Math**

Okay, I got it- I took that quiz!!!! 0.57 is a rational number because it can be expressed as the quotient of two integers: 57 ÷ 1. It can be written as a fraction, 57/100
*Wednesday, September 5, 2012 at 6:52pm by Delilah*

**arithmetic**

There must be more to this question. For example, 39*.26 + 2*.57 + 25*.86 = 32.78 46*.26 + 32*.57 + 3*.86 = 32.78 47*.26 + 24*.57 + 8*.86 = 32.78 48*.26 + 16*.57 + 13*.86 = 32.78 49*.26 + 8*.57 + 18*.86 = 32.78 57*.26 + 30*.57 + 1*.86 = 32.78 among other combinations.
*Tuesday, October 18, 2011 at 1:13pm by Steve*

**Math**

3s + 7c + 1d = 315 4s + 10c + 1d = 420 subtract them s + 3c = 105 s = 105-3c sub back into 1st 3(105-3c) + 7c + d = 315 d = 2c s+c+d = 105-3c + c + 2c =105 cost = $1.05
*Tuesday, May 8, 2012 at 7:33pm by Reiny*

**Physics**

Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is 1.85 105 Pa and the pipe radius is 2.80 cm. At the higher point located at y = 2.50 m, the pressure is 1.28 105 Pa and the pipe radius is 1.20 cm. (a) ...
*Tuesday, November 20, 2012 at 5:45pm by Chelsea*

**Physics**

Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is 1.85 105 Pa and the pipe radius is 2.80 cm. At the higher point located at y = 2.50 m, the pressure is 1.28 105 Pa and the pipe radius is 1.20 cm. (a) ...
*Wednesday, November 21, 2012 at 12:35pm by Chelsea*

**chem**

57 g total 12/57 and 45/57 fractions.
*Wednesday, November 21, 2012 at 2:54pm by Steve*

**Calculus**

let Ø be the angle between their normals (2,2,7)∘(3,-4,4) = √57√41cosØ cosØ = (6 - 8 + 28)/(√57√41) Ø = appr. 57.5° so the two planes form an angle of 180-57.5 or 122.5°
*Thursday, May 17, 2012 at 9:19am by Reiny*

**Factoring**

(100)d^2-(57.3)d= 0 factor out d. d(100d)-57.3 = 0 solve for d. One is d = 0 100d = 57.3 d = 57.3/100 = 0.573.
*Monday, April 14, 2008 at 8:36pm by DrBob222*

**Physics**

Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is 1.70 105 Pa and the pipe radius is 2.50 cm. At the higher point located at y = 2.50 m, the pressure is 1.30 105 Pa and the pipe radius is 1.60 cm. (a) ...
*Friday, November 9, 2012 at 7:04pm by Ashley*

**Physics**

Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is 1.70 105 Pa and the pipe radius is 2.50 cm. At the higher point located at y = 2.50 m, the pressure is 1.30 105 Pa and the pipe radius is 1.60 cm. (a) ...
*Friday, November 9, 2012 at 10:53pm by Ashley*

**Physics**

A horizontal segment of pipe tapers from a cross sectional area of 50 cm2 to 0.5 cm2. The pressure at the larger end of the pipe is 1.34 105 Pa and the speed is 0.038 m/s. What is the pressure at the narrow end of the segment?
*Wednesday, November 7, 2007 at 1:12pm by Dante*

**Math**

Compute the GCD of 105 and 216 using thr Euclidean algorithm. A linear combination of 105 and 216 of the form a 105 + b 216 can be reprented by the vector: (a, b, a 105 + b 216) We start with the two vectors: v1 = (105, 0, 105) v2 = (0,216, 216) The integer part of 216/105 is ...
*Friday, September 28, 2012 at 9:54am by Anonymous*

**science**

Water is flowing in a pipe as depicted in the figure. As shown, p = 113 kPa, d = 4.57 cm, d' = 3.22 cm, v = 4.40 m/s, and h = 1.25 m. What pressure is indicated on the upper pressure gauge? Take y = 0 at the bottom of the left pipe so that the center of the left pipe is y1 = d...
*Friday, April 18, 2014 at 3:39pm by mican*

**algebra- please help me factor**

b^2-22b+57 I am not sure but I got b(b-22)+57 Looks right to me. No, the answer should be: b^2-22b+57 = (b - 3)*(b - 19)
*Monday, February 12, 2007 at 1:25am by Anonymous*

**math**

.28 x^2 - .7 x + 1 = y divide both sides by .28 x^2 - 2.5 x + 3.57 = 3.57 y x^2 - 2.5 x = 3.57 y -3.57 add 1.25^2 = 1.56 to both sides x^2 - 2.5 x +1.56 = 3.57 y - 2.00 (x-1.25)^2 = 3.57 (y - .562) so I get vertex at (1.25 , .562)
*Monday, February 23, 2009 at 5:39pm by Damon*

**PHYSICS!!!**

Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is 1.70 105 Pa and the pipe radius is 2.80 cm. At the higher point located at y = 2.50 m, the pressure is 1.22 105 Pa and the pipe radius is 1.70 cm. (a) ...
*Sunday, November 11, 2012 at 5:29pm by k*

**Physics**

Assume: P0-pressure at 4500m above sea level. P1-pressure at sea-level P2- pressure at depth of 20.6m P2=P1+dgh = P1 + 1024*9.8*20.6 = P1+2.06x10^5 Pa .......(1) P0=P1-dgh =P1 - 1.3*9.8*4500 =P1 - 0.57x10^5 Pa .......(2) [It is assumed density of air near earth's surface is 1....
*Monday, July 2, 2012 at 10:50pm by ajayb*

**math**

3.5% of d is 0.105 0.035d = 0.105 d = 0.105/0.035 d = 3
*Monday, November 8, 2010 at 10:08pm by Ms. Sue*

**Chemistry 105**

I don't know how advanced the class is but the simple way is to use PV = nRT. However, the air will collect moisture as it is bubbled through water so the pressure you use is not 729 torr (don't forget it must be changed to atmospheres) but 729 torr - vapor pressure H2O at 25 ...
*Sunday, October 23, 2011 at 5:35pm by DrBob222*

**chem**

The solvent for an organic reaction is prepared by mixing 50.0 of acetone () with 57.0 of ethyl acetate (). This mixture is stored at 25.0 . The vapor pressure and the densities for the two pure components at 25.0 are given in the following table. What is the vapor pressure of...
*Saturday, February 5, 2011 at 7:18pm by Anonymous*

**physics**

Assuming bicycle tires are perfectly flexible and support the weight of bicycle and rider by pressure alone, calculate the total area of the tires in contact with the ground. The bicycle plus rider has a mass of 80.0 kg, and the gauge pressure in the tires is 3.50×105 Pa
*Sunday, April 6, 2014 at 11:50pm by Mohanad*

**Engineering Physics**

An ideal gas at 12.1 °C and a pressure of 2.38 x 105 Pa occupies a volume of 2.88 m3. (a) How many moles of gas are present? (b) If the volume is raised to 4.70 m3 and the temperature raised to 28.3 °C, what will be the pressure of the gas?
*Wednesday, May 22, 2013 at 9:01pm by kurt*

**Math..number string**

sorry, this is a well-known formula and is correct. There is no need to "run the the real numbers as a double-check" let's check some of the numbers e.g. term(4) = 57 + (4-1)(2) = 57 + 6 = 63 ...check! term(612) = 57 + (612-1)(2) = 1278 This was you answer, but obviously doesn...
*Saturday, June 13, 2009 at 7:44am by Reiny*

**Chemistry 105**

What is the pressure in a 10.0-L cylinder filled with 0.470 mol of nitrogen gas at a temperature of 329 K?
*Sunday, October 23, 2011 at 5:20pm by JULIE*

**PHYSICS**

Well, the swimmers velocity in still water is 40/33 m/s=1.21m/s Now, she is swimming some angle upstream, so the horizontal component of this velocity is 40/57 m/s Now how far did she swim relative to the water ? relative to water= 40/33 * 57 meters CosTheta= 40/(40/33 * 57)= ...
*Monday, November 19, 2007 at 8:48pm by bobpursley*

**chemistry HELP!**

OK. The book wants you to do it the hard way. Here are the two equilibria. ......CH3COOH ==> H^+ + CH3COO^- for which I.....0.170.......0......0 C......-x.........+x.....+x E.....0.170-x.......x.......x ..........CH3COOK ==> K^+ + CH3COO^- I.........0.105.......0.......0...
*Wednesday, December 15, 2010 at 9:20pm by DrBob222*

**Physical Science 9**

Pressure. When you reduce the pressure over a liquid surface to below vapor pressure, it boils off. If you increase the pressure, it does not boil until a higher temperature (eg - pressure cooker). The pressure is high enough in the can to hold the contents in a liquid state, ...
*Sunday, March 16, 2014 at 2:32pm by Damon*

**trigonometry**

sin 237 = sin(180+57) = -sin 57 = -m cos 33 = cos(90-57) = sin 57 = m cos 3 = cos(60-57) = cos60cos57+sin60sin57 = m/2 + m√3/2 = m/2(1+√3) cos 66 = cos(60+6) = cos60cos6 - sin60sin6 Use your double angle formulas to get sin(6) and cos(6) from cos(3) and sin(3)
*Sunday, May 19, 2013 at 4:22am by Steve*

**physics**

A horizontal segment of pipe tapers from a cross sectional area of 50 cm2 to 0.5 cm2. The pressure at the larger end of the pipe is 1.26 105 Pa and the speed is 0.029 m/s. What is the pressure at the narrow end of the segment? Pa Please help!
*Monday, April 9, 2012 at 4:57pm by Malika*

**Chemistry**

First, you need to note the correct spelling of celsius. A mp -10 C, bp 57 C. B mp -67 C, bp 15 C. A is a solid below -10 C, melts at -10 and is a liquid between -10 and 57 C, boils at 57 C and becomes a vapor at 57 and above. Same analysis for B. I think you can figure it out...
*Monday, October 18, 2010 at 11:46am by DrBob222*

**math**

Range = 57 = x 29 = 57 - x x = 57 - 29 = 28 = Age of youngest person.
*Tuesday, August 24, 2010 at 7:59pm by Henry*

**Math question**

That is an example. I do not need exactly 57, but I need 57 OR anything greater than 57
*Friday, January 10, 2014 at 2:51pm by Damon*

**Math**

Area = Length*Width Information you are given: Area = 105cm^2 and Length = width + 8 therefore: 105 = (width + 8)*width 105 = width^2 + 8*width 105 = w^2 + 8w rearranging we get a quadratic: w^2 + 8w - 105 = 0 w^2 - 7w +15w - 105 = 0 w(w - 7) + 15(w - 7) = 0 (w - 7)(w + 15) = ...
*Thursday, December 4, 2008 at 8:09pm by Cianán*

**chemistry**

calculate the pressure when 57 g of flourine at 55 degrees celsius is confined to a 152 liter container.
*Sunday, April 22, 2012 at 9:54pm by brad*

**Math**

You want to do things that get y all by itself on the left, so first add 12 to both sides. -9 y -12 + 12 = 93 + 12 or - 9 y = 105 now divide by -9 to get y alone - 9 y / - 9 = 105 / - 9 or y = -105/9
*Sunday, May 4, 2008 at 2:30pm by Damon*

**math/algebra**

Multiply the numerators and then multiply the denominators. (11/15)(12/7) = 132/105 Simplify: 132/105 = 1 27/105 = 1 9/35
*Wednesday, May 30, 2012 at 1:17pm by Ms. Sue*

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