
Physics Rotaional Kinetic Energy
A car is designed to get its energy from a rotating flywheel with a radius of 1.50 m and a mass of 600 kg. Before a trip, the flywheel is attached to an electric motor, which brings the flywheel's rotational speed up to 4000 rev/min. (a) Find the kinetic
asked by Anonymous on March 17, 2010 
physics
A car is designed to get its energy from a rotating flywheel with a radius of 1.50 m and a mass of 600 kg. Before a trip, the flywheel is attached to an electric motor, which brings the flywheel's rotational speed up to 4000 rev/min. (a) Find the kinetic
asked by mike on March 17, 2010 
anthropology
3. Why do kinship systems work? Where, if any, would you find a working kinship system within the United States? Give examples for both questions. most of us are in a kinship system with spouses, children, parents, grandparents, siblings, uncles and aunts.
asked by jimmy on January 30, 2015 
Math
Jerome claims he can find the area of the composite shape shown by inscribing it in a rectangle and subtracting. Kelly claims that to find the area you need to use addition. Who is correct? Justify your answer.The picture looks like a 2 sided pointed
asked by Ann on May 16, 2015 
Calculus please help??
The motion of a spring that is subject to dampening (such as a car's shock absorber)is often modeled by the product of an exponential function and a sine or cosine function. Suppose the equation of motion for a point on such a spring is
asked by Emma on June 24, 2013 
help asap please
I am trying to find what I need for this Checkpoint tonight and can not find it.. PLease help me... I am so frustrated.. If I have recently posted this I aplogize. Consider that in recent years several states have abandoned bilingual education, but
asked by troyer0269 on February 6, 2009 
Writing
Do you think it is truly possible to get all of the information I would need to write an essay about the sudden "halt" or end of production of electric cars? And, what about the Hybreds? I am apprehensive about this topic because I may not be able to find
asked by Diana on September 29, 2006 
physics
( 1.) An objectis thrown upward from the edge of a tall building with a velocity of 10m/s. Where will the object be 3s after it is thrown? Take g = 10m/s^2 15m above the top of the building 30m below the top of the building 15m below the top of the
asked by lawrence on October 12, 2011 
math
I have some of the answers to this project but I need help with the last couple of answers. Your next project will involve painting the walls and ceiling of your room. First find the surface area of each wall and the ceiling in square feet. NOTE: you need
asked by justme on October 22, 2009 
Calc I
y = (x^2 4)/(x^2  x 12) dy/dx of numerator I got 2x dy/dx of denomenator I got 2x  1 dy/dx of y I got (x^2  16x 4)/((x4)^2(x+3)^2) setting numerator to zero and solving got 8 +/ sqrt(65) with the critical value being the + setting denomenator to
asked by Kate on July 24, 2010 
Math
A car has a fuel efficiency of 33 miled per gallon.(a) Find a function G that calculates the number of gallons required to travel x miles. (b)If the cost of gas is $4 per gallon, find the function C that calculates the cost of fuel to travel x miles.
asked by Nick on October 9, 2017 
PreAlgebra
A triangle is enlarged by a scale factor of 10/3. a) If the perimeter of the copy is 36 meters, find the perimeter of the original triangle using the proportion 10/3. b) If the area of the copied triangle is 48 meters squared, use a proportion to find the
asked by Joy on March 5, 2008 
Physics
1. A horse is harnessed to a sled having a mass of 231 kg, including supplies. The horse must exert a force exceeding 1250 N at an angle of 36.3° (above the horizontal) in order to get the sled moving. Treat the sled as a point particle. (a)Calculate the
asked by Ricky on October 3, 2018 
algebra
If y=35+0.8x gives the distance of the sports car from Flint after x minutes. find the following a. How far is the sports car from Flint after 25 minutes? b.How long will it take until the sports car is 75 miles from Flint? Show how to find the solution
asked by confused and need an answer. on December 1, 2010 
Calculus
Find the antiderivative of f(x)= the 5th root of x^2. A. the 5th root of (x^3)/3 + C B. (2x^1/5)/ 5 + C C. (5x^7/5)/ 7 + C
asked by Justin on August 1, 2019 
maths
In a basket of fruit, there are 6 grapes,11 bananas and 13 oranges, if one fruit is chosen at random, what is the probability that the fruit is either grape or banana. i.find the probability of grape and banana i.find the probability of not banana
asked by Anonymous on January 25, 2017 
Math
Typically, 10% of students make a D on their tests, 60% make a C on their test, and 30% make an A. Mrs. Smith uses a randomnumber table to find the experimental probability that of 5 students', at least 3 will make a C. The digit 0 represents students who
asked by HELP!:) on June 9, 2015 
physics
An object (with charge 4.2 µC and mass 0.024 kg) hovers at rest above the ground, its weight being held up by a uniform electric field.(a) Find the size and direction of this electric field.(b) If the electric charge on the object is quadrupled while its
asked by John on February 4, 2014 
physics
An electron moves from one plate to another across which there is a potential difference of 2000 V. a) Find the speed with which the electron strikes the positive plate. For this problem, I used the Potential difference equation:
asked by Linh on February 25, 2010 
physics
An object (with charge 4.2 µC and mass 0.024 kg) hovers at rest above the ground, its weight being held up by a uniform electric field.(a) Find the size and direction of this electric field.(b) If the electric charge on the object is quadrupled while its
asked by John on February 4, 2014 
Math
Please check my work. 1) 64 divide 4 = 16 2) 144 divide (9) = 16 3) Simplify 9 and a small 2 = 81 4) Simplify (3) and a small 3 = 27 5) Add 4/11 + 5/11 = 1/11 6) subtract 5/11 [3/11] = 8/11 7) multiply [7/8] • [2/4] = 7/16 8) divide 3.5
asked by Ruby on November 8, 2011 
ChemistrykD
A chemical "X" is included in a water in a pond. 1)5dm3 of water from the pond is taken and is mixed with 200cm3 CHCl3.Then CHCl3 layer is taken out separately and left to vaporize. Then the remaining mass of X is measured.There was 10mg. 2)The remaining
asked by Shenaya on May 29, 2017 
Physics
A force of magnitude 7.50 {\rm N} pushes three boxes with masses m_1 = 1.30\,{\rm{kg}},m_2 = 3.20\,{\rm{kg}}, and m_3 = 4.90\,{\rm{kg}}, as shown in the figure(Figure 1) . (Ignore friction.) Find the magnitude of the contact force between boxes 1 and 2,
asked by Adnan on February 16, 2013 
algebra review!
it says write the equation of the vertical line that passes through the point (7,3). what do i need to start it off? find the equation for the line with undefined slope and passing through the point (1,2). what do i need to start that off? what equation
asked by trixie on September 3, 2009 
physics
While working on your physics homework in your dorm room you notice a flowerpot fall past your window because someone has carelessly knocked it off the roof. Fortunately, you computer¡¯s video camera captured the whole thing so you can measure the total
asked by Henry on January 26, 2014 
calc
standard equation of circle concentric with X^2+Y^22X8Y+1=0 and tangent to line 2XY=3 Complete the squares to find the center of the circle. X^2+Y^22X8Y+1=0 (x1)^2+(y4)^2  16 =0 The center is (1,4) and the radius for the given circle is 4. Now find
asked by Melba on September 26, 2006 
finance math
Richard purchased a car for $39,905. He made a downpayment of $15,000 and paid $614 monthly for 45 years. Find the APR. Richard was able to payoff the loan at the end of 30 months. Using the Actuarial method find he unearned interest, and payoff amount. My
asked by Latrice on April 12, 2016 
Research Methodology and Program Evaluation
Can someone help me with the following questions? When the purpose statement denotes an attempt to identify phenomena, events, or exercises, he or she is using: a. clarifying methods b. quantitative methods c. ethnographic methods d. unreliable method I
asked by Lencho on June 17, 2017 
math
six employees of a small company were asked the distance they traveled to work, to the nearest tenth of a mile. find the range of the distances: 2.7,5.9,1.7,4.7,6.9,3.5 This site demonstrates how to find the range of a group of numbers.
asked by Kacye on August 15, 2007 
Physics
*I really don't know how to get started. I have done lots of the homework, but this one (and a couple of others) are really giving me PROBLEMS.* In a rescue, a 76.0 kg police officer is suspended by two cables. The left cable is at an angle of 35 degrees
asked by John on October 1, 2006 
Math Problem (please help)
State sales tax is based on retail price. An item that sells for $115.99 has a sales tax of $8.12. Find a mathematical model that gives the amount of sales tax y in terms of the retail price x. (Round the coefficient to two decimal places.) y = Use the
asked by Angie on September 10, 2014 
physics
charge q1=+4.00nc is located at x=0.200m, and q2 =+5.00nc is at x=0.300 m. what are the magnitude and directionof the net force exerted by these two charges ona negative point charge q3 = 0.600 nc placed at the origin ? I think I need to find the F of
asked by yanis on February 14, 2013 
AP Chemistry
A 2.75 g sample of the hydrocarbon acetone, CH3COCH3, is burned in a bomb calorimeter with 975 mL of water, initially at 23.50 degrees celsius. The bomb is constructed of 285.0 g of nickel metal having a specific heat capacity of Cp = 0.826 J/ g degrees C.
asked by Kate on September 30, 2007 
AP CHEMISTRY
A 2.75 g sample of the hydrocarbon acetone, CH3COCH3, is burned in a bomb calorimeter with 975 mL of water, initially at 23.50 degrees celsius. The bomb is constructed of 285.0 g of nickel metal having a specific heat capacity of Cp = 0.826 J/ g degrees C.
asked by Kate on September 30, 2007 
CHEMISTRY
A 2.75 g sample of the hydrocarbon acetone, CH3COCH3, is burned in a bomb calorimeter with 975 mL of water, initially at 23.50 degrees celsius. The bomb is constructed of 285.0 g of nickel metal having a specific heat capacity of Cp = 0.826 J/ g degrees C.
asked by Jake on September 30, 2007 
Math
The following scores were recorded on a 200point final examination:193,185,163,186,192,135,158,174,188,172,168,183,195,165,183. Find the final examination score. Find the median final examination score. Is the mean or median a more useful representative
asked by Tim on February 15, 2008 
Math
Please help The following scores were recorded on a 200point final examination: 193,185,163,186,192,135,158,174,188,172,168,183,195,165,183. A. Find the mean final examination score B. Find the median final examination score. C. Is the mean or median a
asked by Sherri on March 11, 2008 
Math
The following scores were recorded on a 200point final examination:193,185,163,186,192,135,158,174,188,172,168,183,195,165,183. Find the final examination score. Find the median final examination score. Is the mean or median a more useful representative
asked by Babygirl on February 15, 2008 
Calc 2
Ok, I have two questions first: 1. I'm asked to find a cartesian equation for the polar graph of this polar equation: r^2 = sin(2(theta)) The answer I got was (x^2+y^2)^2/(2xy) = 2 Is this the correct way to express it? 2. I need to find the cartesian
asked by Nikki on April 10, 2007 
Helpppp Math!!!
The market value (in thousands of dollars)of a certain home is a linear function of t, the time in years since 1990. In 1992 the market value was 68 thousand dollars, while in 1997 the market value was 79 thousand dollars Find the slope of V as a linear
asked by Kim on April 29, 2014 
Physics
A 30 kg child sits in a swing supported by two chains, each 1.4 m long. (a) If the tension in each chain at the lowest point is 265 N, find the child’s speed at the lowest point. (Neglect the mass of the seat.) Answer in units of m/s. (b) Find the force
asked by alicia on December 3, 2016 
English
Hi! I could use some help. I am writing a photo essay and my theme is peace love and happiness. So I need to find pictures that show them. I need help finding pictures that show peace. I can not find any good ones. Please help me! I have checked google but
asked by sfsd on February 27, 2009 
algebra
For problems 13 and 14, assign each letter and a blank space to a number as shown by the alphabet table below. Use the code [1,2_3,7] encode the phrase "ONE QUESTION TO GO" The matrix C=[1,2_3,7] was used to encode a phrase to
asked by lee on April 2, 2013 
Algebra
1. The sum of the ages of James and Remy 5 years ago was 44. Twentytwo years from now, James' age will be 52 less than twice3 Remy's age then. Find their present ages. 2. Two numbers have a sum of 41. Their difference is 5. What are the numbers? 3. The
asked by McKenna Louise on January 4, 2014 
Algebra
For the pair of similar solids, find the value of the variable. radius 15cm height 6cm the other is radius 5cm height x cm 3cm **** 18cm 16cm 2cm For the pair of similar solids, find the value of the variable. base x mm height 24mm the other base 4mm
asked by Lost on February 23, 2016 
anthropology
Why do kinship systems work? Where, if any, would you find a working kinship system within the United States? Give examples for both questions. This is my answer, am I right? Most of us are in a kinship system with spouses, children, parents, grandparents,
asked by jimmy on January 31, 2015 
ART CHECKING!!! PLEASE CHECK IT!!! :(
1. How has the artist used value in this painting?(Adoration of the Shepherds by Nicolaes Maes) A. The background is lighter than the foreground to draw the viewer's eye. B. The artist did not use value in this painting. C. The subject is lighter than the
asked by OHI on November 5, 2015 
physics
A 65.0Ù resistor is connected in parallel with a 117.0Ù resistor. This parallel group is connected in series with a 22.0Ù resistor. The total combination is connected across a 15.0V battery Find the current in the 117.0Ù resistor. Find the power
asked by Anonymous on January 29, 2011 
physics
1.A merrygoround makes one complete revo lution in 12.2 s. A 49.4 kg child sits on the horizontal floor of the merrygoround 2.3 m from the center. Find the child’s acceleration. The accelera tion of gravity is 9.8 m/s2 . Answer in units of m/s2
asked by brain on February 4, 2012 
Physics
1)A car is moving with uniform accelaration. It moves along two point A and B and enters with velocity 50 m/s and 80 m/s respectively . Find the velocity when the car is moving in b/w the point A and B. Here the body is not starting from rest. Now if it is
asked by Prathiksha on August 23, 2011 
Math
can you plz check these few answers? (i know im right on the ones not shown) 6.find the side length of a square with an area of 169in squared a.338in b.106in c. 26in**** d.13in 7.this is a.. 0.2333 a.rational number b.integer, rational number****
asked by ShannonPanda on March 14, 2018 
Calculus the derivative
Can you please check my answers and help me fix the one I don't or or did wron . The height in feet of a free falling object t seconds after release is s(t)=16t^2+ v_0t+s_0, where s_0 is the height(in feet) at which the object is realsed, and v_0 is the
asked by Samantha on July 18, 2016 
geometry
1. Initial point: (0, 0); Terminal point: (3, 4) A Lesson 13 B Lesson 13 C Lesson 13 D Lesson 13 E Lesson 13 F Lesson 13 2. Initial point: (3, 5); Terminal point: (2, 1) A Lesson 13 B Lesson 13 C Lesson 13 D Lesson 13 E Lesson 13 F Lesson 13 In problems
asked by Cam on December 7, 2011 
science/physics
A 0.09 kg ball of dough is thrown straight up into the air with an initial speed of 5.5 m/s (a) Find the momentum of the ball of dough at its maximum height. (b) Find the momentum of the ball of dough halfway to its maximum height on the way up.
asked by brandon on December 10, 2009 
math
What are median and mode and how do you find them? Median The middle number in a set of data. You find it by simply couting to the center of the set of data. Mode The number that occurrs the most times in a set of data.
asked by Margaret on September 21, 2006 
science/physics
A 0.09 kg ball of dough is thrown straight up into the air with an initial speed of 5.5 m/s. (a) Find the momentum of the ball of dough at its maximum height. (b) Find the momentum of the ball of dough halfway to its maximum height on the way up.
asked by brandon on December 10, 2009 
Physics
A 0.15 kg ball of dough is thrown straight up into the air with an initial speed of 5.7 m/s. a.)Find the momentum of the ball of dough at its maximum height. b.) Find the momentum of the ball of dough halfway to its maximum height on the way up.
asked by Tyler on December 8, 2011 
Geometry
For this project I have to find the indiviual area, the total area,and the quantity of each shape.I get the quantity part.But the indiviual shape you have find the base and height.Then you add the total area from all the indiviual.I don't get.
asked by Anonymous on July 5, 2011 
Calculus
Let 𝑆 be the region (in the first quadrant) bounded by a circle 𝑥^2 + 𝑦^2 = 2, 𝑦^2 = 𝑥 and the 𝑥axis (ii) Find the volume of the solid generated by rotating the region 𝑆 about the 𝑦axis (c) Find the surface area of the solid
asked by Desperate Student on April 20, 2016 
physics
A constant force of 1.5 N to the right acts on a 2.5 kg mass for 0.30 s. (a) Find the final velocity of the mass if it is initially at rest. m/s to the right (b) Find the final velocity of the mass if it is initially moving along the xaxis with a velocity
asked by Anonymous on January 25, 2011 
Algebra 2: Prob and Stats
A survey of 480 high school students found that 37% had a pet. Find the margin of error. Round to the nearest percent. Use the margin of error to find an interval that is likely to contain the true population proportion. * margin of error = +5% interval,
asked by Skye on May 24, 2010 
math
Complete the following: (2 points per answer) Celestial Body Equatorial Diameter (km) Scientific Notation Earth 12,700 Moon 3.48 X 103 Sun 1,390,000 Jupiter 1.34 X 105 Mercury 4800 2. Theater ticket prices (in dollars) x years after 1997 are described by
asked by lisa on March 4, 2011 
checking answers 4 algerbra
1. use a commutative law to find an equivlant expression f+sr? sr+f? 2. determine which real number corresponds to the situation. The record high tempature for a date is 97.8 above zero. The cooresponding number for this sentence is 97.8? 3.Translate to an
asked by Nashea on November 8, 2009 
checking answers 4 algerbra
1. use a commutative law to find an equivlant expression f+sr? sr+f? 2. determine which real number corresponds to the situation. The record high tempature for a date is 97.8 above zero. The cooresponding number for this sentence is 97.8? 3.Translate to an
asked by Nashea on November 8, 2009 
Physics
In the figure, a chain consisting of five links, each of mass 0.100 kg, is lifted vertically with constant acceleration of magnitude a = 2.50 m/s2. Find the magnitudes of (a) the force on link 1 from link 2, (b) the force on link 2 from link 3, (c) the
asked by Sarah on March 19, 2011 
Physics
A 60 kg block slides along the top of a 100 kg block with an acceleration of 3.0 m/s2 when a horizontal force F of 320 N is applied. The 100 kg block sits on a horizontal frictionless surface, but there is friction between the two blocks. (a) Find the
asked by Henry on October 12, 2011 
Mechanics (M1) A level?
A block moves on a rough slope of length 10 m inclined at 30 degrees to the horizontal. The coefficiebt of friction between the block and the slope is 0.4. The block starts from rest at the top of the slope. a) Find the speed at which the block reaches the
asked by Jat on April 29, 2012 
early childhood educationneed help!!
I need help with this question. Mr. White is having circle time with his first grade class. He is discussing the "th" blend and what words can be made by using this sound. He notices that after about five minutes, Mike is getting restless and not staying
asked by Melody on January 16, 2007 
math
please check and see if my answers are correct if not let me know so i can redo these and find where i messed up 1. divid by moving the decimal point 27.3 dived 10^5 my answer .000273 2.Jon spent 1/3 of his study time doing math homework and 2/7 preparing
asked by larry on January 5, 2007 
chemistry
0.5g of fuming h2s04 oleum is diluted with water. This solution is completely neutralized by 26.7ml of 0.4N naoh. Find the percentage of free s03 in the smaple solution. The answer 20.6% Assume that 50ml of 0.01M edta solution were added to 25ml of
asked by Fai on March 3, 2013 
red panda bear
Need to find good web site on a red panda bear. Seen lots none any good. Please check these sites carefully. Then post a specific question if you don't find what you need in these sites. http://www.wellingtonzoo.com/animals/animals/mammals/panda.html
asked by jacob on March 28, 2007 
English 1
I have to write an essasy about "The Man to Send Rain Cloids" and "The Rules of the Game". In my essay I have to identify 3 examples of cultural differences creating conflict. For each of the 3 examples, I have to point out how it helped to create an
asked by Anonymous on October 6, 2010 
Trigonometry
1. What is the area of triangle ABC if a = 47.0°, β = 57.8°, and a = 10.2 cm? A. 58.2 cm2 B. 43.5 cm2 C. 38.4 cm2 D. 33.3 cm2 2. Given triangle ABC with β = 41°, g = 14°, and a = 5.0, find the value of c. A. 6.2 B. 4.0 C. 1.5 D. 17 3. Resolve the
asked by Erick on December 2, 2012 
Math
1. What is the area of triangle ABC if a = 47.0°, β = 57.8°, and a = 10.2 cm? A. 58.2 cm2 B. 43.5 cm2 C. 38.4 cm2 D. 33.3 cm2 2. Given triangle ABC with β = 41°, g = 14°, and a = 5.0, find the value of c. A. 6.2 B. 4.0 C. 1.5 D. 17 3. Resolve the
asked by Erick on November 28, 2012 
Trigonometry
1. What is the area of triangle ABC if a = 47.0°, β = 57.8°, and a = 10.2 cm? A. 58.2 cm2
asked by Erick on December 3, 2012 
trigonometry
1. What is the area of triangle ABC if a = 47.0°, β = 57.8°, and a = 10.2 cm? A. 58.2 cm2 B. 43.5 cm2 C. 38.4 cm2 D. 33.3 cm2 2. Given triangle ABC with β = 41°, g = 14°, and a = 5.0, find the value of c. A. 6.2 B. 4.0 C. 1.5 D. 17 3. Resolve the
asked by Erick on November 28, 2012 
CHEMISTRY
I need to find the rate law of a reaction but ive only done so when factors cancel out, this one has all different numbers and im not quite sure what to do with it. It has time taken every second (which im assuming are the different trials) and different
asked by Amanda on March 19, 2014 
Rate Law  Chemistry
I need to find the rate law of a reaction but ive only done so when factors cancel out, this one has all different numbers and im not quite sure what to do with it. It has time taken every second (which im assuming are the different trials) and different
asked by Amanda on March 19, 2014 
Calculus
1.if a ball is thrown into the air with a velocity of 35ft/s, it's height in feet after t seconds is given by y=35t10t^2. Find the averag velocity for the time period beginning when t=4 and lasting 0.05s. 2.if a ball is thrown into the air with a velocity
asked by Jacke on August 28, 2014 
Chemistry
I need to find the rate law of a reaction but ive only done so when factors cancel out, this one has all different numbers and im not quite sure what to do with it. It has time taken every second (which im assuming are the different trials) and different
asked by Amanda on March 19, 2014 
CHEMISTRY
I need to find the rate law of a reaction but ive only done so when factors cancel out, this one has all different numbers and im not quite sure what to do with it. It has time taken every second (which im assuming are the different trials) and different
asked by Amanda on March 20, 2014 
Further calculus
1) A price p (in dollars) and demand x for a product are related by 2x^2+6xp+50p^2=10600. If the price is increasing at a rate of 4 dollars per month when the price is 30 dollars, find the rate of change of the demand. 2) a) The price (in dollars) p and
asked by Alison on November 2, 2011 
phyiscs help please
A 3.00*10^2 N force is pulling an 80.0 kg refrigerator across a horizontal surface. The force acts at an angle of 18.0° above the surface. The coefficient of kinetic friction is 0.200, and the refrigerator moves a distance of 8.00 m. (a) Find the work
asked by Anonymous on October 29, 2010 
Chemistry
I need to find the rate law of a reaction but ive only done so when factors cancel out, this one has all different numbers and im not quite sure what to do with it. It has time taken every second (which im assuming are the different trials) and different
asked by Nicole on March 19, 2014 
Chemistry
I need to find the rate law of a reaction but ive only done so when factors cancel out, this one has all different numbers and im not quite sure what to do with it. It has time taken every second (which im assuming are the different trials) and different
asked by Amanda on March 19, 2014 
Graph problems!!!
Ok. so i'm supposed to find the coordinates of a line using the slope intercept method but i don't understand it!!! can some one PLEEAASE help me? also i'm supposed to graph a line using the same method and they give me the coordinates oly its in an
asked by Alli P. on June 22, 2005 
math
A. Draw a scatter plot B. Find the value for r. C. Test the significance of r at the 5% level and at the 1% level. D. find the equation of the regression line and draw the line on the scatter plot, but only if r is significant. E. Describe the nature of
asked by winta on July 5, 2009 
Statistics
Height (ft) Interval after (min) 96 68 111 80 76 66 91 72 66 58 108 79 116 84 91 79 The data show the time intervals after an eruption (to the next eruption) of a certain geyser. Find the regression equation, letting the first variable be the independent
asked by Stephanie on February 12, 2014 
college algebra
The sum of three consecutive natural numbers is 651, find the numbers. 3*7*31 21*31=651 is what I put for my answer but that was incorrect on the homework. Please help me Another Question I had problems with was :Your weekly paycheck is 25 percent less
asked by Anonymous on May 29, 2014 
physics  sound level
For two sounds whose sound levels differ by 69 dB, find the ratios (greater value / smaller value) of the following values. (a) the intensities Intensity Final/Intensity Initial = log^1 (69 / 10) = 7.9x10^6 (b) the pressure amplitudes (c) the particle
asked by COFFEE on April 21, 2007 
math
Water is flowing at a rate of 10 m3/s into the cylindrical tank shown below. a) Find the volume V of the water as a function of the water level h. b) Find h as a function of the time t during which water has been flowing into the tank. height of cylinder:
asked by lou on July 18, 2011 
Chemistry
Calculate the delta H and delta S for the reaction. From there, calculate the delta G at 25 degrees Celsius. Predict whether it the reaction is spontaneous or nonspontaneous under standard conditions. CH3OH(l)+ O2(g)> HCO2H(l)+ H2O(l) *i could not find
asked by Anonymous on February 26, 2010 
algebra
1. find the volume of a square pyramid with side length 4 ft and a height of 9ft? 36 48** 108 144 2.find the volume of a square pyramid with side length 6 cm and a height of 2 cm? 8 12 24** 72 3.find the volume of a cone with a radius of 3 cm and a height
asked by lol on March 21, 2019 
probability
Consider 10 independent tosses of a biased coin with the probability of Heads at each toss equal to p, where 0
asked by Johan on June 6, 2019 
maths
A box contains 20 balls, of which 5 are red, 5 are blue, 5 are white and 5 are green. Suppose a sample of 5 balls are chosen without replacement. a) find the probability that the sample contains balls of all the same colour (answer is 4/ 20C5, but why isnt
asked by Candice on October 11, 2012 
Algebra word problem help
The average walking speed R of people living in a city of population P,in thousands, is given by R=0.37InP+0.05, where R is in feet per second. a.) The population of Honolulu, Hawaii is 395,790. Find the average walking speed. b.) A city's average walking
asked by Shawn on November 21, 2008 
Physics  drwls can you help me with this?
A 2.00kg block hangs from a rubber cord, being supported so that the cord is not stretched. The unstretched length of the cord is 0.500m and it's mass is 5.00g.The "spring constant" for the cord is 100N/m. Block is released and stops at lowest point. a)
asked by ~christina~ on February 20, 2008 
Geometry
Ok Dr. Russ helped me find one part of the question, but I still can't figure out the values of x that maximizes volume = in. Any help is appreciated. Thanks On a rectangular piece of cardboard with perimeter 11 inches, three parallel and equally spaced
asked by Valerie on January 21, 2011 
physics
A car is designed to get its energy from a rotating flywheel (solid disk) with a radius of 1.00 m and a mass of 600 kg. Before a trip, the flywheel is attached to an electric motor, which brings the flywheel's rotational speed up to 4,000 rev/min. (a) Find
asked by heather on December 2, 2012 
physics
hi,need help please.thank. A car is designed to get its energy from a rotating flywheel (solid disk) with a radius of 2.00 m and a mass of 525 kg. Before a trip, the flywheel is attached to an electric motor, which brings the flywheel's rotational speed up
asked by Chan on November 22, 2009
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