1. Trig

    A 60 ft. antenna stands on top of a building, From a point on the ground, the angles of elevation to the top and bottom of the antenna measure 58 and 44 respectively. How tall is the building

    asked by John on April 5, 2011
  2. Physics

    Vector A is described as having magnitude -7 and angle 30degress. Which is an equivaent statement of magnitude and angle of vector A? (Note: All angles are measured counterclockwise from x-axis.)

    asked by Eaden on April 15, 2013
  3. geometry

    the measure of an angle of a parallelogram is 12 degrees less than 3 times the measure of an adjacent angle. explain how to find the measures of all the interior angles of the parallelogram.

    asked by sab on March 7, 2011
  4. math Question

    classify the triangle by its angles and its sides. Explain how you knew which classifications to use. top of the triangle is 70 degrees, bottom right is 45 degrees and bottom left is 65.

    asked by Anonymous on March 3, 2018
  5. Business Calculus

    A manufacturer has found that marginal cost is dc/dx=3x^2-60x+400 dollars per unit when x units have been produced. The total cost of producing the first 2 units is $900. What is the total cost of producing the first 5 units? I would integrate, you are

    asked by Lisa on December 4, 2006
  6. Math

    A total of 210 people attended the opening night of a school musical. Student tickets cost 3.00 each while general admission tickets cost 7.50 each. If total sales were $1296, how many general admission tickets were sold? Need help setting up the equations

    asked by Ana on April 9, 2018
  7. Math

    Gray bought two plots of land for a total of 120000 on the first plot she made a profit of 15% on the second plot she made 10% profit her total profit 5500, how much did she pay for each piece of land? (And please show the full procedure of the math even

    asked by URGENT Help Need by 22.10.13 on October 18, 2013
  8. Maths

    Question: total of 40 students in class, boys number is double of the girls number. How many boys & girls in the class? Working as follow: a = boy b = girl 2a + b = 40 2a + 2a = 40 4a =40 a =10 b=2a b = 2x 10 b = 20 So a=10, b= 20. Total only 30, not 40 .

    asked by Josh on May 21, 2014
  9. Maths

    Question: total of 40 students in class, boys number is double of the girls number. How many boys & girls in the class? Working as follow: a = boy b = girl 2a + b = 40 2a + 2a = 40 4a =40 a =10 b=2a b = 2x 10 b = 20 So a=10, b= 20. Total only 30, not 40 .

    asked by Josh on May 22, 2014
  10. MATH

    While shopping, as you place items in your cart you round to the nearest dollar to keep a running total. You purchase five items in the following order: $1.89, $4.85, $2.59, $1.45, and $5.61 What is the estimated running total to the nearest dollar?

    asked by TJ on March 8, 2016
  11. math

    The marginal cost function is given by dc/dq=0.08q^2-1.8q+2.5 where c is the total cost in producing q units of product. The fixed cost is 5000. Find the total cost for producing 1000 units

    asked by shima on April 19, 2017
  12. Structures/Engineering

    Design for flexure a simple beam 14 ft in length and having a total uniformly distributed dead load of 13.2 kips and a total uniformly distributed live load of 26.4 kips.

    asked by Dib on February 16, 2017
  13. Chemistry

    Helium is collected over water at 20.°C and 1.16 atm total pressure. What total volume of gas must be collected to obtain 0.597 g of helium? (At 20.°C the vapor pressure of water is 17.5 torr.)

    asked by Sam on May 6, 2015
  14. math

    while training for a marathon Anderson is supposed to run a total of 10 miles total during the week. he ran the following number of miles from Monday to Saturday: 4 1/2, 1 2/3, 4/6, 3 1/12, 1/6 how far did Anderson run during the week?

    asked by edward on March 26, 2015
  15. physics

    When the crampton coal-fired train engine was built in 1852 , its mass was 48.3t ( 1.0 t= 1.0*10^3) and its force capability was rated at 22.4 kN. Assuming it was pulling train cars whose total mass doubled its own was and the total friction on the engine

    asked by Melissa on March 25, 2012
  16. Math

    A rectangular study area is to be enclosed by a fence and divided into two equal parts, with a fence running along the division parallel to one of the sides. if the total area is 384 ft^2, find the dimensions of the study area that will minimize the total

    asked by Sam on March 10, 2009
  17. Physics

    A roller coaster is at the top of a 98.2 m hill and has a mass of 1831.0 kg. It is traveling at a velocity of 23.7 m/s. What is the coaster car's TOTAL energy? I took the eg=1/2mv^2 and plugged in (1831)(9.8)(98.2) and got 1762081.16 I then took the ek=

    asked by Carl on December 7, 2009
  18. physics

    When the crampton coal-fired train engine was built in 1852 , its mass was 48.3t ( 1.0 t= 1.0*10^3) and its force capability was rated at 22.4 kN. Assuming it was pulling train cars whose total mass doubled its own was and the total friction on the engine

    asked by Melissa on March 25, 2012
  19. Math

    Two blocks are connected by a string and pulley. On the left side the block weighs 90 grams while on the other side it weighs 110 grams. Assuming that the string and pulley are massless, the magnitude of the acceleration of each block is?

    asked by Norman on October 19, 2017
  20. physics

    If instead, the swimmer makes 30.5 laps in the same pool in 3 h, determine the total distance the swimmer traveled, the swimmer's total displacement, the swimmer's average velocity, and the swimmer's average speed. pool is 30 m long please answer in km

    asked by lauren on January 27, 2012
  21. physics

    If instead, the swimmer makes 30.5 laps in the same pool in 3 h, determine the total distance the swimmer traveled, the swimmer's total displacement, the swimmer's average velocity, and the swimmer's average speed. pool is 30 m long please answer in km

    asked by lauren on January 27, 2012
  22. acc/291

    I got problem P-13-9-A allfigured out I just can'tP13-9A Condensed financial data of Arma Inc. follow. ARMA INC. Income Statement For the Year Ended December 31, 2011 Sales $392,780 Less: Cost of goods sold $135,460 Operating expenses, excluding

    asked by at on June 16, 2012
  23. science

    Exercise 2. Starting with a hypothetical population of 14,000 people and an even age distribution (1,000 in each age group from 1-5 to 66-70 years), assume that the population initially has a total fertility rate of 2.0 and an average life span of 70

    asked by sarah on March 28, 2010
  24. Math geometry

    1) The base angles of an isosceles triangle are (50-x)^6 and (30x-12)^6 what is the vertex angle? 2) The area of a trapezoid is 52cm^2 if it's bases are 8 cm apart find the sum of their heights 3) What is the area of a circle inscribed inside an

    asked by K on February 27, 2017
  25. working in a pharmacy

    when a "special" begins to lose its impact you should? a/transfer the products to the shelves at their normal cost b.move the products to another spot c.set up an attractive display using your product knowledge my answer is d

    asked by susue on January 24, 2013
  26. Stats-BOB PURSLEY Help, do you know this?

    Is there a rule to figure out if this is a true or false statement? A sample size of 900 is not large enough to conclude that the sampling distribution of p is a normal distribution, when the estimate of the population proportion is .995.

    asked by help on October 24, 2010
  27. phyics

    The figure shows a person whose weight is W = 500 N doing push-ups. Find the normal force exerted by the floor on (a) each hand and (b) each foot, assuming that the person holds this position.

    asked by bobby on November 1, 2013
  28. Statistics

    A population of values has a normal distribution with μ=76.6 and σ=43.9 You intend to draw a random sample of size n=142. Find P75, which is the score separating the bottom 75% scores from the top 25% scores.

    asked by Zameer on January 2, 2017
  29. Stat

    Thirty randomly selected students took the calculus final. If the sample mean was 89 and the standard deviation was 6.2, construct a 99% confidence interval of the mean score of all students. Assume that the population has a normal distribution

    asked by Anonymous on October 1, 2014
  30. stats

    A popular retail store knows that the purchase amounts by its customers is a random variable that follows a normal distribution with a mean of $30 and a standard deviation of $9. What is the probability that a randomly selected customer will spend $20 or

    asked by cate on March 29, 2013
  31. statistics

    A popular retail store knows that the purchase amounts by its customers is a random variable that follows a normal distribution with a mean of $30 and a standard deviation of $9. What is the probability that a randomly selected customer will spend between

    asked by Selene on September 25, 2013
  32. math

    The FunTime Amusement park customer load during the summer follows a normal distribution with mean 450 and standard deviation 80. Determine the probability that the number of customers on any given day during the summer will be less than 420.

    asked by Matt on September 30, 2009
  33. Biology

    Color Blindness is inherited as a sex linked recessive. If a color blind woman marries a man with normal vision, what would you expect in their children? Show a cross I put that X- x- Xx x-

    asked by Ash on February 20, 2015
  34. chemistry

    Benzene has a heat of vaporization of 30.72kJ/mol and a normal boiling point of 80.1 C. At what temperature does benzene boil when the external pressure is 490 ? I think I have the equation setup, but I can't figure out how to solve for T2..please help

    asked by hannah on July 11, 2011
  35. math

    Students were given an exam with 300 multiple-choice questions. The distribution of the scores was normal and mean was 195 with a standard deviation of 30. What was the score of students who scored in the middle of the class? (50% did better, 50% did

    asked by Patty on January 31, 2010
  36. math

    Students were given an exam with 300 multiple-choice questions. The distribution of the scores was normal and mean was 195 with a standard deviation of 30. What was the score of students who scored in the middle of the class? (50% did better, 50% did

    asked by Patty on January 31, 2010
  37. Chemistry

    1) Given the following “substances” and their normal boiling points, in celsius. G:43.8 Celsius J:93.7 M:56.7 T: 83.5 R:63.6 Which set below correctly lists some of these liquids in order of increasing intermolecular forces at 20 oC? a) G < R < J b) J

    asked by Hannah on January 30, 2012
  38. statistics

    Assume that the mean hourly cost to operate a commercial airplane follows the normal distribution with a mean of $2,225 per hour and a standard deviation of $220. What is the operating cost for the lowest 5 percent of the airplanes?

    asked by Barbara on November 21, 2010
  39. physics

    The figure shows a person whose weight is W = 670 N doing push-ups. Find the normal force exerted by the floor on (a) each hand and (b) each foot, assuming that the person holds this position.

    asked by ram on October 23, 2014
  40. Physics

    A person struggles to read by holding a book at arms length, a distance of 50.0 cm. What power of reading glasses should be prescribed for him, assuming they will be placed 2.0 cm from the eye and he wanted to read at normal near point of 25.0 cm?

    asked by Anonymous on May 26, 2015
  41. chemistry

    hi this is a question for my lab. explain why the addition of bromine to trans-cinnamic acid takes place more slowly than the addition of Br2 to a normal alkene like 3-hexene or cyclohexene thankss

    asked by steve on January 26, 2009
  42. Statistics

    Assume that the mean hourly cost to operate a commercial airplane follows the normal distribution with a mean of $2,325 per hour and a standard deviation of $240. What is the operating cost for the lowest 5 percent of the airplanes?

    asked by Dany on October 10, 2014
  43. Statistics

    Is there a rule to figure out if this is a true or false statement? A sample size of 900 is not large enough to conclude that the sampling distribution of p is a normal distribution, when the estimate of the population proportion is .995.

    asked by none on October 24, 2010
  44. six sigma

    If the mean value of the weight of a particular brand of dog food bag is 20.6 pounds and the standard deviation is 1.3, assume a normal distribution and calculate the percentage of bags that falls below the lower specification value of 19.7 pounds.

    asked by stansler on November 26, 2014
  45. Algebra

    Michael's total weekly pay includes a base salary plus certain percent of his sales. The table below show Michael's sales for 4 weeks and his total weekly pay. This data represents a linear function. What is Michael's weekly base salary? Sales (x)week 1:

    asked by William on April 12, 2016
  46. Math

    option 1: 2-by-3, 3-by-4, and 4-by-5 option 2: 2-by-2 , 3-by-3 ,and 4-by-4 option 3: 3-by-5 , 3-by-6 , and 3-by-7 For each pyramid option, calculate the total number of shoeboxes used after each row has been completed. That is calculate the total number of

    asked by Pie on October 16, 2013
  47. Accounting

    A company has two major businesses that it operates. One business manufactures and sells unicycles for commercial use in circuses and so forth (total sales of $150M), and the other sells bicycles to the public (total sales of $20M). The unicycle business

    asked by javon on March 30, 2011
  48. ALGEBRA-MAT117

    Trains A & B are traveling if the same direction on parallel tracks. Train A is traveling at 100 miles an hour and Train B is traveling at 110 mph . Train A passes a station at 1:15 pm If Train B passes the same station at 1:45 pm what time will Train B

    asked by shauna on April 30, 2009
  49. Astronomy

    For this question assume the moon is 110 of its diameter away from the Earth. The largest apparent size of Mercury that we ever see in the sky is 1/150 the apparent diameter of the Moon. The diameter of Mercury is about 4900 km. What is the closest that

    asked by Elisabeth on August 27, 2013
  50. math

    You find a sales receipt from a store that shows the total price as $40, and the total amount paid including sales tax as $42. a. Write an equation you can use to find the sales tax rate which is r. what is the equation so I tried all things I could think

    asked by leanna on February 6, 2017
  51. 2 math

    Denise spoke with a total of 80 customers on her shift at work today. Of those customers, 55% resulted in a sale, 15% said they would "come back another time", and 10% were sent to speak with the supervisor on shift. What is the total number of customer

    asked by annie on October 1, 2014
  52. algebra

    A total of $15,000 is invested into two accounts. One of the accounts earns 12% per year and the other earns 10% per year. If the total interest earned in the first year is $1600, how much is invested in each account? 1.) Define the variable(s) and what

    asked by liz on January 19, 2013
  53. consumer math

    Nadia bought 200 shares of stock at 34 1/2. She had to pay a 1% commission to her broker. What was the total price of the stock? 2) Rick bought a truck for $13,459. He had to pay 6.75% sales tax on the purchase. What was the total amount he had to pay for

    asked by ange on February 4, 2010
  54. physics

    Two dogs are fighting over a stuffed animal. One pulls to the right with a force of 88 N at 18° above the horizontal. The other pulls down and to the left with a force of 74 N at 12° below the horizontal. Ignoring the weight of the toy, if the total work

    asked by tommy on February 24, 2012
  55. Math

    an employee is paid $3600 for the first month. she is paid an additional 1% at the end of the second month, which means a total of $3636. she continues to receive a 1% raise each month for a full year. what is her total salary at the end of the year?

    asked by Peter on January 24, 2017
  56. C++

    In this exercise, you will create a program for the sales manager at Computer Haven, a small business that offers motivational seminars to local companies. Figure 7 – 64 shows the charge for attending a seminar. Notice that the charge per person depends

    asked by Evelin on March 25, 2016
  57. English

    Thank you very much. Here is the second part I'd like you to check. 1) From his place Winston can read the three slogans of the Party: War is peace, freedom is slavery, ignorance is strength. 2) Each of these is of course either contradictory or the

    asked by Henry2 on January 22, 2012
  58. Physics

    I have already solved 2 out of 3 questions: Your spaceship lands on an unknown planet. To determine the local value of g, you ask a steel-toed crew member to kick a stone, and you find that if she kicks it at 16.0 m/s at various angles, the maximum range

    asked by . on September 17, 2010
  59. math

    Question: There is a $200 entrance fee for each band plus a $25 entrance fee for each drill team. The competition has a total of 32 bands and 25 drill teams. Write and evaluate an expression for the total amount of money collected from the entrance fees. -

    asked by Anon on October 2, 2015
  60. Math

    Hey I'm working on a math assignment and I'm trying to work out the total amount of rainfall that fell in a certain area. Would this formula be correct? Total rainfall = rainfall mm x duration of storm minutes x area covered And with my rainfall mm I

    asked by Tatiana on April 24, 2011
  61. mathematics

    a math consist of 20 multiple choice questions 3 points are awarded for a wrong answer. no points and awarded or deducted for an answered questions. jenny attempted a total of 19 questions and her total score is above 32. find the minimum number of correct

    asked by Anonymous on September 28, 2016
  62. physics

    Q.1.Find the total mechanical energy in one time period? my sir says that it is (1/2)mw^2A^2 but according to me it should be 1/4mw^2A^2.How? Q.2.The total mechnical energy of a spring mass system in SHM is E = (1/2)mw^2A^2.Suppose the oscillating particle

    asked by anonymous on December 25, 2009
  63. US History

    I have a question on the republican principles applied by Jefferson and Madison during their presidencies. Can someone help me out on what they mean by "republican principles"? thanks

    asked by mw on December 29, 2008
  64. similar figures

    The rule (x,3/4y) is applied to a polygon. The given point is on the original polygon. Find the image of the point (6,8)

    asked by Jacob on November 9, 2010
  65. math

    The sale price of an item is $180 after a 25% discount is applied. What is the original price of the item?

    asked by Madeline on March 16, 2017
  66. physics

    What happens when the frequency of a force applied to a system matches the natural frequency of vibration of the system

    asked by kabelo on September 20, 2010
  67. calculus

    I have a question about the root test. If we have 5x^5 + 2 in the denominator, then does the root(1/x) apply to the whole denominator as one, for example (5x^5 + 2)^1/x or would it be applied separately. Thanks

    asked by zuhra on April 29, 2012
  68. Physics

    If a force of 20N stretches a spring 15 cm, by what amount will the spring stretch is if a force of 80 N is applied?

    asked by Don on November 18, 2011
  69. Physics

    A spring of natural length 1.5m is extended 0.0050m by a force of 0.8N, what will its length be when the applied force is 3.2N?

    asked by Emzkidinn.tk on April 27, 2016
  70. physics

    A spring of natural length 1.5m is extended 0.055cm by force of 0.8N, what will it length be when the applied force is 3.2N

    asked by Issa on June 27, 2018
  71. Rock Hill

    What will the stopping distance be for a 3,000-kg car if -3,000 N of force are applied when the car is traveling 10 m/s?

    asked by yolanda on May 3, 2010
  72. Physics-help please!

    A net torque of 54 N.m is applied to a disk with a rotational inertia of 13.2 kg.m2 What is the rotational acceleration of the disk?

    asked by Anonymous on July 8, 2014
  73. physics

    an 8-newton foce is applied to a 4-kg object. what is the rate of acceleration. a.4 meters per second b.8 meters per second c.2 meters per second d.12 meters per second

    asked by Gabriella on March 18, 2011
  74. physical science

    What will the stopping distance be for a 1,000-kg car if -2,000 N of force are applied when the car is traveling 10 m/s?

    asked by joe on May 19, 2010
  75. Physics

    For the normal force exerted on the book by the wedge in the diagram, which force(s) complete(s) the force pair for Newton’s third law (action-reaction)? 1) the sum of the component of gravity perpendicular to the surface of the incline and the component

    asked by kurtis on March 19, 2015
  76. Water Treatment

    a) Which five quality parameters of the raw water may not meet drinking water standards? Bacterial colony count (less than 100 cfu/ml) Ammonium (less than 0.2 mg/l) Nitrite (less than 0.1 mg/l) Nitrate (less than 50 mg/l) Iron (less than 200 µg/l)

    asked by youlife2015 on October 18, 2013
  77. Water-Treatment

    a) Which five quality parameters of the raw water may not meet drinking water standards? Bacterial colony count (less than 100 cfu/ml) Ammonium (less than 0.2 mg/l) Nitrite (less than 0.1 mg/l) Nitrate (less than 50 mg/l) Iron (less than 200 µg/l)

    asked by youlifex on October 19, 2013
  78. Water Treatment

    a) Which five quality parameters of the raw water may not meet drinking water standards? Bacterial colony count (less than 100 cfu/ml) Ammonium (less than 0.2 mg/l) Nitrite (less than 0.1 mg/l) Nitrate (less than 50 mg/l) Iron (less than 200 µg/l)

    asked by youlifex on October 20, 2013
  79. MATH

    Your original purchase price was $825.00 plus 7% sales tax. You enter into an agreement where the interest (12.5% APR) is waived for the first 12 months provided you make the required monthly payments; otherwise the interest is accrued from the date of

    asked by Sandra on May 8, 2015
  80. trig

    From the top of a hill 700 ft. high, an observer notes that the angles of depression of two successive markerstones on a level ground, which leads straight away from the hill are 5 degree and 15 degree respectively. Find the distance between the two

    asked by Grail on January 14, 2012
  81. College Trigonometry

    From a point 200 yards from the foot of a building, the angle of elevation to the top of the building is 37 degrees. Find the measure of the angles of the triangle formed by the building, the ground, and the line of sight to the top of the building?

    asked by Marie on January 16, 2013
  82. Trigonometry

    Hello! Explain why the primary trigonometric ratios depend only on the given angle and not the size of legs and hypotenuse of a right triangle? I am not 100% sure but it is because the angles have the same value for all of the ratios? Is it also because

    asked by Lucina on January 18, 2015
  83. Physics

    Find the magnitude and direction of the resultant R of the three vectors shown in figure 1.3. The vectors have the following magnitudes: A=5.0, B=7.9, and C=8.0. Express the direction of the vector sum by specifying the angle it makes with the positive

    asked by Anonymous on October 10, 2014
  84. trigonometry

    From the top of a hill 700 ft high an observer notes that the angles of depression of two successive markerstones on a level ground, which leads straight away from the hill are 5 degree and 15 degree respectively. Find the distance between the two

    asked by joan on January 18, 2012
  85. physics

    A body pulled by a constant force accelerates from 10 cm/s to 35 cm/s in 3.5 s. A second force accelerates the same body from rest to 110 cm/s in 10.5 s. If the first force is known to be 5.0 N, that what is the second force?

    asked by seB on February 5, 2011
  86. Math

    About what percent of the total population believed saying 136,800,000 to be true? Total population: 250,000,000? Answer is 55% how did you get this percent?

    asked by Dwayne on September 6, 2011
  87. Math (money)

    HIII!!! I NEED HELP ON MATH! PLEASE HELP! Melissa has spent $17 so far on gifts. The additional amount she will spend will be more than $8. What are the possible total amount she will spent? Use c for the total amount (in dollars) she will spend.

    asked by Fei on July 9, 2016
  88. Jr. High Pressure Challenge Question

    A small flask has a mass of 22.71 g. When it is filled with water the total mass is 153.38 g. When it is filled with milk the total mass is 157.67 g. What is the density of milk?

    asked by Anonymous on December 27, 2010
  89. MATH

    You wish to mentally estimate the total cost of items that have the following prices: $1.85, $.98, $3.49, $9.78, and $6.18. Rounding off the items to the nearest half-dollar, your estimate of the total cost of these items is A. $22.50. B. $22.30. C.

    asked by Sara on August 18, 2012
  90. science

    'Copper' pennies actually contain very little copper. If a penny contains 91.768 % of its total volume zinc and 8.232 % of its total volume copper, what is its density? (d of Cu = 8.95 g/cm3; d of Zn = 7.14 g/cm3.)

    asked by Arthur on August 19, 2009
  91. Math

    The school's total attendance is 449, there are 81 present in math class, what percent of the total attendance is the attendance in the math class (to the nearest tenth)?

    asked by Shawna Lynn on April 29, 2013
  92. biology

    For each of these restriction enzymes, determine whether or not the enzyme would cut the normal, Mutant A, Mutant B, or Mutant C DNA sequences described in part (g) and select your answers in the table below:

    asked by lily on May 15, 2013
  93. engineering mechanics

    a 75kg person is standing on a board inclined at 30 angle type the horizontal .what are the magnitudes of gravitational components normal to the board and parallel to the board

    asked by Chandra kiran on July 26, 2016
  94. physics

    A projectile is fired with an initial speed of 65.2 m/s at an angle of 34.5 degree above the horizontal on a long flat firing range. Determine (a) The maximum height reached by the projectile, (b) The total time in the air, (c) The total horizontal

    asked by Anonymous on August 4, 2014
  95. physics 2

    A charge, q1, of +4.4 micro-coulombs and another unknown charge, q2, are surrounded by a surface. The total flux through the surface is -9.2 x 106 (N m2)/C. These charges are now placed on the x axis. q1 is placed at x = 0, and q2 is placed at x = +114.51

    asked by Jessica on January 25, 2013
  96. Math

    1. Lucita works at a fitness center and earns $5.50. per hour. She worked 3 hours on Friday and x hours on Saturday. Write an expression to represent her total wages earned. 5.50(3)+5.50x 2. You and your friend spend a total of $15 on lunch. Your friend's

    asked by Jerald on December 4, 2013
  97. Math help needed .???

    I really need help in answering the steps and the answer to this question? In a recent year, North Carolina produced 1,300,000,000 pounds of turkey. This was 18.6% of the U.S. total in that year. Calculate the U. S. total turkey production for that year.

    asked by Lisa on December 8, 2008
  98. algebra

    if a vendor charges p dollars each for rugby shirts, then he expects to sell 2000-100p shirts at a tournament. a. Find a polynomial R(p) that represents the total revenue when the shirts are p dollars each b. Find r(5), R(10), and R(20) C. Use the bar

    asked by Anonymous on February 25, 2011
  99. Chemistry

    If 4.00 g of metal is plated in the voltaic cell (which contains Ag and Ni with the total potential of 2.98 V) , how much metal is plated in the electrolytic cell (contains Ag and Zn with the total of 1.98 V)? I have no idea how to do this! Help?

    asked by Keisha on March 8, 2012
  100. Science

    Suppose the total momentum of two masses before a collision is 100 kg m/s. What is the total momentum of the two masses after they collide? A. 0 kg m/s B. 50 kg m/s C. 100 kg m/s D. 200 kg m/s

    asked by Henery on March 6, 2015