1. Math

    The formula C = 2 x Pi x r is used to calculate the circumference of a circle when given the radius. What is the formula for calculating the radius when given the circumference? C/2Pi = R*** C/2R = Pi 2 x Pi x C = R 2 x Pi/ C = R

    asked by Agala on March 20, 2017
  2. physics

    ok, to calculate KE of a non-relativistic electron, we use the formula: K=.5mv^2=p^2/2m and K=h^2/(2m wavelength^2) do we use the same formula to calculate the KE of a non-relativistic proton?

    asked by Emma on May 28, 2009
  3. Chem

    Arrange the three metals(Cu, Zn, and Mg) in order of their relative strengths as reducing agents, placing the strongest first. Arrange the three metallic ions ( Cu(No3)2, Zn(No3)2, and Mg(No3)2 ) in order of their relative strengths as oxidizing agents,

    asked by ashley on April 15, 2008
  4. chem!

    Arrange the three metals(Cu, Zn, and Mg) in order of their relative strengths as reducing agents, placing the strongest first. Arrange the three metallic ions ( Cu(No3)2, Zn(No3)2, and Mg(No3)2 ) in order of their relative strengths as oxidizing agents,

    asked by ashley on April 15, 2008
  5. PHYSICS

    Hi! I have some questions from a study guide in my physics class, and they give me the answer, but I have to show how to get the answer. I did most of them, but need help with this. All I need is a formula, please. :)Thank you! Here it is: A skier with a

    asked by Anna on March 14, 2013
  6. Chemistry

    I have an exam in a day and I'm confused on how to solve this question. Do I use PV=nRT? Do I find out the molecular formula of the gas from the percentage of nitrogen and oxygen? A sample of a mixture of gases contains 80.0% nitrogen gas and 20.0% oxygen

    asked by Jenny on June 22, 2014
  7. Physics

    A tank holds 135 moles of argon gas (atomic mass = 6.633521 × 10^-26 kg) at a pressure of 101300 Pa and a temperature of 302K. Recall that the number of gas molecules is equal to Avagadros number (6.022 × 10^23) times the number of moles of the gas 1)

    asked by Billy on February 9, 2016
  8. Chemistry

    Hi! I kind of need help to get started with these four problems. There are more problems like the ones below. It would be great if I had an example of each of the four problems. Thanks! FeSO4(aq)+ KCL(aq) (for problem 1 and 2) 1)When the following

    asked by chrissy on October 15, 2006
  9. physics

    A new type of spring is found where the spring force F is given by F=-kx + bx^2 where k=400 N/ m and b=100 N/m^2 and x is the expansion (or compression) of the spring from its equilibrium position. The spring is attached to a point mass of 1 kg sitting on

    asked by Physics on April 4, 2011
  10. chemistry

    please explain the dimensional analysis, and atomic structure? The conversion table for metric to English and English to metric? Dimensional analysis is the procedure for changing from one unit to another. For example, convert 12 inches to centimeters. The

    asked by Silverfox on February 9, 2007
  11. physics

    A)You are in a hot air balloon rising from the ground at a constant velocity of 2.50 m/s upward. To celebrate the takeoff, you open a bottle of champagne, expelling the cork with a horizontal velocity of 5.70 m/s relative to the balloon. When opened, the

    asked by Eleni on February 1, 2014
  12. 9th grade algebra (recursive formula)

    Can you explain how to find a sub 1 in the following problem? 1. Given 2 terms in an arithmetic sequence, find the recursive formula. a sub 18 = 3362 , a sub 38 = 7362 Steps: a. Find difference: (7632 - 3362)/(38 - 18) = 4000/20 = 200 b. plug into

    asked by Alexis on January 10, 2017
  13. Chemistry

    Consider the reaction 2A (g) + B (g) --> C (g) At 300K temperature, pressure of A and B are 2*10^5 Pa. The temperature is kept constant and let the reaction occur. After 5 mins the total pressure of the system os 3.5*10^5 Pa. Question : When the pressure

    asked by Ashley on January 13, 2019
  14. Science

    Can the size of an object's displacement be greater than the distance the object travels? Describe the motion represented by a horizontal line on a distance-time graph. Explain whether, during a trip, a car's instantaneous speed can ever be greater than

    asked by Twilight lover on April 28, 2009
  15. Math Personal Finance

    Assume we invest $2000 for one year in a savings account that pays an APR (Annual Percentage Rate) of 10% compounded quarterly. The compound interest formula is: Balance after t periods = Principal × (1 + r)t The final balance using the compound interest

    asked by Alexis on June 8, 2014
  16. Geometry MATH CHECK

    Check? In your own words, explain why we use the formula AB = |a - b| to find the distance of a segment. Include why you need to subtract and why you need to take the absolute value. We use that formula |a-b| because a and b are representing coodinate

    asked by Vanessa on August 14, 2013
  17. CHEMISTRY

    how to calculate the weight of solute req'd to prepare 1 liter of 1 normal of: a.) LiOH b.) phosphoric acid my work: formula= gew/L or w/ewxL i get their mw then divide it to their H/OH so i can get EW then multiply it to 1. a.) 24 g/mol/1 b.) 98g/mol/3 i

    asked by Selle on October 12, 2014
  18. College Algebra

    How to get the answer to a formula if I=ã2P/L relates the coefficient of self-induction, L (in henry's), the energy P stored in an electronic circuit (in joules), and the current I (in amps). Find I if P=120 and L=70. The example I have to go by does

    asked by Trying to make it in life on March 18, 2014
  19. Physics

    Thank you for answering my previous questions! I have another one now in regards to the following question... An unknown potential difference exists between the inner and outer surfaces of the membrane of a cell. The inner surface is negative relative to

    asked by Sandra on February 28, 2010
  20. Physics

    Two skaters, one with mass 68 kg and the other with mass 47 kg, stand on an ice rink holding a pole of length 8.8 m and negligible mass. Starting from the ends of the pole, the skaters pull themselves along the pole until they meet. How far does the 47 kg

    asked by Elaina on November 1, 2011
  21. Physics

    The mass of the Moon is 7.35 x 10^22 kg. At some point between Earth and the Moon, the force of Earth's gravitational attraction on an object is cancelled by the Moon's force of gravitational attraction. If the distance between Earth and the Moon (centre

    asked by Joanna on February 4, 2011
  22. Physical chemistry

    A mixture contains n2o4 and No2 in the ratio 2:1 by volume what is the vapour density of the mixture.Pls answer the question i have been on the question for 2 hrs by now tried solving using mole fraction ideal gas equation an using the formula molar mass

    asked by Rajiv on August 7, 2014
  23. Math

    Hi ya! So I got a question like when I'm rationalzing a denomenator in order to get simple radical form I really don't know what to do for example this problem (6^(2^-1)-3^(2^-1))^-1 ok so I know your trying to get it so it's a perfect sqaure right so I

    asked by Kelly on May 31, 2009
  24. PHYSICS!!

    A person thought it would be a good idea to change a tire on the side of a hill. The tire has a width of W = 0.30 m and a radius of R = 0.40 m. The inside of the wheel is empty, but the wheel is solid from a radius of R/2 to R with uniform density. The

    asked by Vanessa on April 4, 2016
  25. physics

    Three very small spheres are located along a straight line in space far away from everything else. The first one (with a mass of 2.59 kg) is at a point between the other two, 10.50 cm to the right of the second one (with a mass of 5.03 kg), and 20.40 cm to

    asked by rory on December 15, 2007
  26. Math

    An estimate of the mass of a new, unsharpened pencil is about __________. I think it's about 35 grams? Fill in the blanks. A good reference to use when estimating the mass of a small object is _____. It has a mass of about_________. Thank you!

    asked by Jessica on January 22, 2013
  27. physics

    A solid disk pulley of mass 2.00 kg and a radius of 30.0 cm is rotated by a block mass of 0.500 kg falling from rest, a distance of 4.00 m. What is the mass's acceleration and how much time elapses during its fall?

    asked by George on December 19, 2010
  28. biology

    What is relative dating?

    asked by stupid on April 1, 2015
  29. Calculus

    For what value of k will x+k/x have a relative max at x=-2

    asked by Erika on December 5, 2016
  30. English

    How is himself a relative pronoun?

    asked by Brooke on October 25, 2007
  31. math

    At what value(s) of x does f(x)=(-4x^4)+(2x^2) have a relative maximum?

    asked by Steven on February 2, 2015
  32. Math

    What does relative to math?

    asked by Liza on June 20, 2009
  33. social studies

    What does relative location mean?

    asked by julissa on September 15, 2009
  34. Biology

    What does Rf, (or relative to front) mean?

    asked by Jill on April 4, 2012
  35. calculus

    3. For what value of k will x+k/x have a relative maximum at x = -2? A. -4 B. -2 C. 2 D. 4 E. None of these

    asked by Taeyeon on February 26, 2012
  36. relative frequency

    help with relative frequency

    asked by Rose on July 27, 2012
  37. math

    50–59 and the corresponding relative frequency is 0.2. What does the 0.2 value indicate

    asked by Chic on July 25, 2010
  38. Physics

    1. What do we mean when we say that the motion is relative?

    asked by Sean on January 23, 2011
  39. Urgent Chem help.plz

    The crystal structure of lithium sulfide (Li2S) is pictured here. (Intro 1 figure) The edge length of the unit cell is 5.88*10^2^2 pm. i guess it is FCC ( face cenred cubic) 1-- What are the coordination numbers of and Li^+ and S^2- in the lithium sulfide

    asked by Julia on January 24, 2009
  40. Chemistry

    A chemist prepares a 45.0-g sample of carbon tetrachloride (CCl4). How many moles of this compound has she prepared? (Note: The atomic weight of carbon is 12.0 and of chlorine is 35.5.) how do i do this?

    asked by Inayah on April 18, 2017
  41. phyics

    Pick the radioactive isotope in each set. 23/11 20/9 Explain your choice. a)its atomic number is greater than 83 b)it has fewer n than p in the nucleus c)it is an odd-odd nuclide none of the above

    asked by ashley on September 17, 2010
  42. science

    Which of the following properties increase with increasing atomic number for fluorine and chlorine? I. melting point of the elements (yes) II. boiling point of the hydrogen halides A) I only B) II only C) Both I and II D) neither I nor II I think it's A -

    asked by i love chem on January 1, 2011
  43. Chemistry

    the atomic spectrum of lithium has a strong red line at 670.8 nm. what is the energy of each photon of this wave length? What is the energy of 1 mole of these photons??

    asked by Maxx on February 18, 2016
  44. Chemistry

    the atomic spectrum of lithium has a strong red line at 670.8 nm. what is the energy of each photon of this wave length? What is the energy of 1 mole of these photons?? -do you use the e=h x v ??

    asked by Cali on February 18, 2016
  45. Math

    Jim wants to plant pansies in his new planter. How much potting soil should Jim buy? Round to the nearest centimeter. Hint: The height is 100 cm and the diameter is 40 cm. My teacher said to use a specific formula. Out of that formula I got 125,664, but I

    asked by Monica on October 11, 2013
  46. math

    The formula for the total resistance RT (in ohms) of a parallel circuit is given by rt= 1 / ((1/r1)+(1/r2)+(1/r3)) where R1, R2, and R3 are the resistance values of the first, second, and third resistors, respectively. Simplify the total resistance

    asked by Anonymous on January 27, 2019
  47. PHYSICS

    A pendulum was set up and measurements were made to enable the mechanical energy to be calculated at the start position S and the lowest point of the pendulums swing L. The mass of the pendulum bob was determined on an electronic scale and its diamter was

    asked by Sarah on January 30, 2010
  48. Math

    What is a quadratic formula? how can i solve x^2 + 8x + 12 = 0 applying quadratic formula?

    asked by Justin P on January 18, 2012
  49. math-calculus

    solve equation |x^2-2x-6| using quadratic formula. i not get how to do this and it says quadratic formula.

    asked by Shreya on January 18, 2012
  50. Physics

    An electrostatic force of 5 N exists between two identical point charges, each of mass 0.01 g, placed 4 mm apart. a.) Find the magnitude of each charge. b.) One of these charges is placed into a magnetic field. Assuming that the charge has a speed of 50

    asked by Nathaniel on June 12, 2006
  51. science

    Which of these correctly compares the masses of different objects in the universe? * A A moon has less mass than a star and more mass than the planet it orbits. B A planet has less mass than a galaxy and more mass than the star it orbits. C A galaxy has

    asked by K- jenner on November 2, 2017
  52. algebra

    Can someone please help me with this problem? Thanks! Evaluate the infinite geometric series: 8+4+2+1+... I thought you needed to know the number of terms to evaluate, but how do you know them if it is infinite? The limit of Sn = 1 + r + r^2 + r^3 + r^4 +

    asked by Mercy on May 30, 2007
  53. Biology Chemistry Part

    I'm trying to calculated the rate of reaction In this lab I took a 50 mL beaker and poured in 10 ml of cold distilled water into it, I then poured in 30 ml of original enzyme solution (I believed we used cold potato juice or something), I then took a piece

    asked by Kate on September 26, 2010
  54. epi

    In a population-based cohort study, an entire community was interviewed regarding smoking habits and then followed for one year. All lung cancer deaths were ascertained and the following data were available: •Fifteen (15) lung cancer deaths occurred

    asked by noni on October 9, 2008
  55. physics

    A bird watcher meanders through the woods, walking 0.45 km due east, 0.60 km due south, and 2.70 km in a direction 37.0° north of west. The time required for this trip is 4.00 h. (a) Determine the magnitude and direction (relative to due west) of the bird

    asked by demi on September 5, 2010
  56. math

    Find the area of a circle with center (-3, -4) that passes through the point (5, 2). First use the distance formula to find the radius of the circle. Use π = 3.14. ~ I did the distance formula and got 28 now i just dont know what to do after that please

    asked by Jakis on February 26, 2017
  57. chemistry

    write the balanced formula equation and the net ionic equation for the reaction of sodium hydroxide with hydrochloric acid. Formula equation.............. net equation.............

    asked by denis on October 30, 2011
  58. algebra 1

    a cars fuel economy E ( miles per gallon) is given by the formula E=m divided by g where m is the number of miles driven and g is the number of gallons of fuel used solve the formula for m

    asked by rebekah on September 29, 2009
  59. chemistry

    A solution of the solute hexane and the solvent acetone that is 28.1 g hexane per 100. g solution is available. Calculate the mass (g) of the solution that must be taken to obtain 0.646 kg of CH3(CH2)4CH3. Molar Mass (g/mol) CH3(CH2)4CH3 100.21 (CH3)2CO

    asked by bobby brown on February 14, 2010
  60. Chemistry

    At the start of the process 118 kg of isobutylbenzene is used and the overall yield of the 3 reaction steps is 24%, how many 400 mg tablets of ibuprofen will be produced? Isobutylbenzene: Chemical formula = C10H14 Molecular Weight = 134.22g

    asked by Jessica on May 20, 2015
  61. Math

    Write a formula expressing the information: i)Rose paid twice as much as Mike I used R for Rose and M for Mike The formula I cam up with is R=2M ii)Taxes are 6 percent of income [Use T and x] So I wrote it like this T(0.06)/X iii)There are twenty times as

    asked by Mari on July 8, 2014
  62. math

    The depth of water(d metres) in a harbour is given by the formula d = a+bsin(ct) where a, b and c are constants, and t is the time in hours after midnight. It is known that both b and c are non-zero and 20

    asked by Jessica on November 20, 2014
  63. Physics

    You row a boat perpendicular to the shore of a river that flows at 2.5 m/s. The velocity of your boat is 4.5 m/s relative to the water. (a) What is the velocity of your boat relative to the shore? (b) What is the component of your velocity parallel to the

    asked by HELP on November 21, 2016
  64. Physics

    Two balls are approaching each other head on. Their velocities are + 9.55 and -11.0 m/s (a) Determine the velocity of the center of mass of the two balls if they have the same mass. (b) Determine the velocity of the center of mass of the two balls if the

    asked by Cavin on March 2, 2007
  65. physics

    Two masses are connected by a string. Mass A is on a flat roof and mass B is hanging over the edge of the roof. The mass on the roof is 15 kg and the hanging mass is 5 kg. The edge of the roof is 100 m above the ground. The two masses are initially at rest

    asked by Anna on November 18, 2010
  66. Physics

    A machine swings a mass of 1kg connected to a massless rope in a vertical circle so that the speed of them mass is constant at 8 m/s. The rope is 1.0 m long, and the center of the circle is fixed at all times. a) Find the acceleration of the mass with

    asked by Robin on November 12, 2013
  67. physics

    A block of mass 7.33 kg in outerspace is moving at 1.72 m/s with no external forces acting on it. After an explosion, the block is split into two parts both having mass equal to half the mass of the original block. The explosion supplies the two masses

    asked by Anonymous on October 18, 2009
  68. Chemistry

    During the electrolysis of an aqueous solution of CuSO4 with inert electrodes (A) the anode loses mass and the cathode gains mass. (B) the mass of the anode remains the same but the cathode gains mass. (C) the mass of the anode decreases but the mass of

    asked by LT on May 12, 2008
  69. organic Chemistry

    In my Organic chemistry lab, the calculated enantiomeric excess was over 100% . Is this possible? and If not, what sort of error could have been made? *the observed optical rotation was read correctly

    asked by jenny on November 23, 2009
  70. Chemistry answer check

    What quantity of heat is required to produce 5 mol of oxygen gas by this reaction? HgO(s) → Hg(l) + ½ O2(g), ΔH = +90.7kJ I calculated 90.7*5, but my online homework says its wrong how do I calcuate this?

    asked by Mary on June 25, 2013
  71. 6th grade

    Scientists have calculated that the Moon's revolution around Earth is increasing by about .015 s per century. At this rate, how long would it take the length of a month to increase by one full day?

    asked by Sylvie on December 2, 2010
  72. Math

    Jim Tree borrowed $1,000 at 10 percent for one year. He paid a $45 processing fee and $100 in interest. He calculated the APR to the nearest tenth.

    asked by Ram on October 16, 2010
  73. math

    Scientists have calculated that the Moon's revolution around Earth is increasing by about .015 s per century. At this rate, how long would it take the length of a month to increase by one full day?

    asked by matt on September 1, 2011
  74. Physics

    The acceleration due to gravity calculated this way works well for objects near the Earth’s surface. How would you have to change the above equation if the object was 100,000 meters above the ground?

    asked by Lay on October 28, 2012
  75. capital markets

    Hi can anybode help me in this question....With one numerical example show how government bonds are priced and their yields are calculated, and also explain how they provide the benchmark for the cost of funds for other borrowers?

    asked by URATA on May 11, 2008
  76. science

    The acceleration due to gravity calculated this way works well for objects near the Earth’s surface. How would you have to change the above equation if the object was 100,000 meters above the ground?

    asked by Thuy Nguyen on January 22, 2012
  77. physics (electricity)

    note: E is for exponetial two large horizontal, parallel metal plates are 2.5cm apart in air and the upper is maintained at a positive potential relative to the lower so that the field strenght between them is 2.1x10E3vmE-1 the potential difference between

    asked by matrix school 2 on August 8, 2009
  78. Statistics

    A bottling company uses a filling machine to fill glass bottles with mango juice. The bottles are supposed to contain 300 milliliters (ml). In fact the amounts vary according to a normal distribution with mean = 298 and standard dev = 3 ml. What is the

    asked by Jason L on March 2, 2007
  79. Science halp

    6.Two cars with different masses travel at the same speed down a hill toward a stop sign. What will happen when both cars apply brakes at the same time to stop? * A. The car with the smaller mass will require less force to stop than the car with the larger

    asked by Sanic fest speds :D on February 16, 2018
  80. CHEMISTRY

    The mass of an erlenmeyer flask is 78.639g and the mass of the flask and water is 327.039. If the density of water is 1 g/ml then what is the true volume of the flask? so i had subtracted the mass of just the flask from the mass of the flask and the water

    asked by Sandy on March 28, 2014
  81. chemistry

    how do i calculate %of arsenic and oygen by mass and chem composition of the oxide that has been formed 0.702 sample of arsenicheated, material in boat, oxide of arsenic with mass of 0.927g please help %As = [(mass As)/mass oxide]x100=?? %O = [(mass

    asked by mickey on January 30, 2007
  82. physics

    A duck has a mass of 2.2 kg. As the duck paddles, a force of 0.11 N acts on it in a direction due east. In addition, the current of the water exerts a force of 0.12 N in a direction of 50° south of east. When these forces begin to act, the velocity of the

    asked by Yiah on September 25, 2014
  83. Physics please help

    A duck has a mass of 2.8 kg. As the duck paddles, a force of 0.05 N acts on it in a direction due east. In addition, the current of the water exerts a force of 0.15 N in a direction of 60° south of east. When these forces begin to act, the velocity of the

    asked by Sushmitha on January 21, 2012
  84. physics

    A 67.3 kg ice skater moving to the right with a velocity of 2.52 m/s throws a 0.151 kg snowball to the right with a velocity of 33.7 m/s relative to the ground. What is the velocity of the ice skater after throwing the snowball? Disregard the friction

    asked by Emily on December 2, 2012
  85. Physics

    A duck has a mass of 2.8 kg. As the duck paddles, a force of 0.09 N acts on it in a direction due east. In addition, the current of the water exerts a force of 0.20 N in a direction of 47° south of east. When these forces begin to act, the velocity of the

    asked by Bob on September 21, 2012
  86. Physics

    A duck has a mass of 2.8 kg. As the duck paddles, a force of 0.09 N acts on it in a direction due east. In addition, the current of the water exerts a force of 0.20 N in a direction of 47° south of east. When these forces begin to act, the velocity of the

    asked by Bob on September 21, 2012
  87. physics

    A duck has a mass of 2.3 kg. As the duck paddles, a force of 0.07 N acts on it in a direction due east. In addition, the current of the water exerts a force of 0.26 N in a direction of 48° south of east. When these forces begin to act, the velocity of the

    asked by ellen on September 23, 2010
  88. physics

    A space vehicle is coasting at a constant velocity of 24.7 m/s in the +y direction relative to a space station. The pilot of the vehicle fires a RCS (reaction control system) thruster, which causes it to accelerate at 0.228 m/s2 in the +x direction. After

    asked by frost on February 10, 2011
  89. physics

    A space vehicle is coasting at a constant velocity of 24.9 m/s in the +y direction relative to a space station. The pilot of the vehicle fires a RCS (reaction control system) thruster, which causes it to accelerate at 0.338 m/s2 in the +x direction. After

    asked by louis aaaa on June 23, 2013
  90. physics

    A space vehicle is coasting at a constant velocity of 22.5 m/s in the +y direction relative to a space station. The pilot of the vehicle fires a RCS (reaction control system) thruster, which causes it to accelerate at 0.223 m/s2 in the +x direction. After

    asked by Alex on January 31, 2012
  91. Physics

    A Texas cockroach of mass 0.17 kg runs counterclockwise around the rim of a lazy Susan (a circular disk mounted on a vertical axle) that has radius 15 cm, rotational inertia 5.5 10-3 kg·m2, and frictionless bearings. The cockroach's speed (relative to the

    asked by Ray on October 26, 2009
  92. Physics

    please can u check my answer Here are the questions: 1. A 0.45 kg book is resting on a dessktop 0.64 m high. Calculate the book's potential energy relative to a)the desktop? b)the floor. 2. A 0.636 kg basketball has a potential energy of 19J at the basket.

    asked by Anonymous on April 9, 2011
  93. physics

    Estimate the speed of the parachutist descending at the constant velocity with open parachute. Assume the area of the parachute, A = 30 m^2, mass of a person, m = 100 kg, and density of air, roh = 1 kg/m^3. Enter the answer limited to the second decimal

    asked by Anonymous on February 23, 2011
  94. Maths

    A pack of 50 blank recordable cd's has a mass of 0.8g. The packaging has a mass of 80g. What is the mass of one CD?

    asked by piripismum on August 21, 2012
  95. math

    A mouse has a mass of 18 g. A guinea pig has a mass of 0.85 kg. Is the mass of the two animals together greater or less than 1 kg? And why?

    asked by jasmyn on August 27, 2008
  96. Physics

    If mass A is 1.0 kg, mass B is 5.0 kg, and the frictionless pulley has a mass of 0.5 kg and a radius of 0.15 m, what is the velocity of A and B at 0.5 seconds?

    asked by Rye on July 19, 2014
  97. chemistry

    Mass of sample 0.0581 g Mass of BaSO4 0.0860 g What is the mass of sulfate?

    asked by Lucas on January 26, 2012
  98. physics

    Using Newton's Law of Universal Gravitation, compare the effect of the Sun and the Moon on the tides. Constants: Mass of the Moon, M☽= 7.348E22 kg. Moon's semi-major axis, a☽= 3.844E8 m. You can find the other constants you will need on the Astronomy

    asked by Maria on November 16, 2011
  99. Physics

    The weight of the block at rest on a frictionless table is 305 N. This block is attched by a string to another mass that hangs off a frictionless pulley. And the weight of the hanging block is 125 N. Ignoring all frictional effects and assuming the pulley

    asked by Anonymous on January 17, 2012
  100. chemistry

    an unsaturated solution is made by completely dissolving 20.0 grams of NaNO3 in 100.0 grams of water at 20.0 degrees celcius. show a corrct numerical sat up for calculating the number of moles of nano3(gram-formula mass = 85.0 grams per mole) used to make

    asked by nicole on April 23, 2012

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