Questions Asked in November 2014

Most Popular Questions of November 2014

  1. Physics

    A 4.0-kg cylinder of solid iron is supported by a string while submerged in water. What is the tension in the string? The density of iron is 7860 kg/m3 and that of water is 1000 kg/m3. A) 34 N B) 2.5 N C) 24 N D) 40 N E) 20 N

    asked by Anonymous on November 22, 2014
  2. math

    The volume of a pyramid varies jointly with the base area of the pyramid and its height. The volume of one pyramid is 24 cubic inches when its base area is 24 square inches and its height is 3 inches. What is the volume of a pyramid with a base area of 10

    asked by julie on November 15, 2014
  3. Maths

    The second term of a GP is 12, more than the first term, given that the common ratio is half of the first. Find the 3rd term of the GP

    asked by Geometric progression on November 10, 2014
  4. Chemistry

    Using the following data 1. CU3+ + 2e- ---> Cu+ E1= 1.28V 2. CU2+ + e- ---> Cu+ E2= 0.15V 3. Cu2+ + 2e- ----> Cu(s) E3= 0.34V 3. Cu+ + e- ----> Cu (s) E4= 0.52V calculate the standard reduction potential for the reaction of Cu(III) to Cu(II). Is it .783 V?

    asked by anna on November 9, 2014
  5. chemistry

    For which of the reactions listed below will Gibbs free energy always be negative? A. An exothermic reaction that increases in entropy B. An endothermic reaction that decreases in entropy C. An endothermic reaction that increases in entropy D. An

    asked by Cortey on November 27, 2014
  6. Stats Math 2

    Exit polling is a popular technique used to determine the outcome of an election prior to results being tallied. Suppose a referendum to increase funding for education is on a ballot in a large town (voting population over 100,000). An exit poll of 300

    asked by LADO on November 26, 2014
  7. statistics

    Customers arrive at a movie theater at the advertised movie time only to find that they have to sit through several previews and prepreview ads before the movie starts. Many complain that the time devoted to previews is too long (The Wall Street Journal,

    asked by sean on November 16, 2014
  8. Physics Help Please! Check the answer

    an athlete stretches a spring an extra 40.0 cm. how much energy has he transferred to the spring, if the spring constant is 5286.0 N/m? Us= 1/2kx^2 =1/2(5286.0)(.40)=1057.2 J Thanks!

    asked by HELP on November 6, 2014
  9. filipino

    halimbawa ng tu!@#$%^&lian 5 halimbawa ng tao laban sa tao 5 halimbawa ng tao laban sa sarili 5 halimbawa ng tao laban sa lipunan 5 halimbawa ng tao laban sa kalikasan

    asked by ai on November 10, 2014
  10. chemistry

    If you need to multiply the following reaction by 2 to be an intermediate reaction in a Hess's law problem, what would be the final value for the enthalpy of reaction you use for this intermediate reaction? C2H4 + 3 O2 2 CO2 + 2 H2O, H = -1410 kJ

    asked by Anonymous on November 24, 2014
  11. Trig

    I need help setting these up. 1.) Use the parallelogram rule to find the magnitude of the resultant force for the two forces shown in the figure. round to one decimal place. Theta= 35 degree, b=98 lbs, c=55lb 2.) Find the magnitude and direction angle for

    asked by Derrick on November 26, 2014
  12. Algebra

    Define #N by the formula #N=.5(N)+1. Calculate #(#(#50)). Thank you!

    asked by Trish Goal on November 2, 2014
  13. Trigonometry

    A vertical pole 40 feet tall stands on a hillside that makes an angle of 17 degrees with the horizontal. Approximate the minimum length of cable that will reach the top of the pole from a point on the hillside 72 feet downhill from the base of the

    asked by Bailey on November 3, 2014
  14. Physics

    An green hoop with mass mh = 2.4 kg and radius Rh = 0.14 m hangs from a string that goes over a blue solid disk pulley with mass md = 2.2 kg and radius Rd = 0.1 m. The other end of the string is attached to a massless axel through the center of an orange

    asked by stewart on November 10, 2014
  15. Maths

    find the area of the region bounded by the parabola y^2= 16x and its latus rectum

    asked by Tony on November 15, 2014
  16. Social studies

    which part of the pakistan country is warmer?

    asked by Noor on November 12, 2014
  17. Solid Mensuration

    A circle having an area of 452 square inches is cut into two segments by a chord, which is 6 inches from the center of the circle. Find the area of the bigger segment.

    asked by Sol on November 30, 2014
  18. Precalc 2

    At a state fair truck pull, two pickup trucks are attached to the back end of a monster truck as illustrated in the figure. One of the pickups pulls with a force of 1600 pounds and the other pulls with a force of 3200 pounds with an angle of 45° between

    asked by Gerald on November 23, 2014
  19. math

    A test had 200 questions .Each correct answer carried 2 marks.Each wrong answer carried -1/2 marks and unanswered question fetched no marks .Ajay attempted all the question in the test and he scored 360 marks.What would his marks be, if for each correct

    asked by rachel on November 28, 2014
  20. Chemistry

    Calculate the standard entropy, ΔS°rxn, of the following reaction at 25.0 °C using the data in this table. The standard enthalpy of the reaction, ΔH°rxn, is –44.2 kJ·mol–1. C2H4(G)+H20 ---> C5H5OH ΔS°rxn= ______ J*K^-1*mol^-1 Then, calculate

    asked by Patrick Panasko on November 30, 2014
  21. chem please help

    What characteristic best describes the low entropy associated with solids? A. The atoms in a solid are mostly metals. B. The atoms are held together with strong bonds. C. The atoms are arranged in a rigid structure. D. The solid has a high specific heat

    asked by Morgan on November 23, 2014
  22. Chemistry

    At a given temperature, a first-order reaction has a rate constant of 3.5 ´ 10–3 s–1. How long will it take for the reaction to be 24% complete? A chemical reaction that is first-order in X is observed to have a rate constant of 2.20 ´ 10–2 s–1.

    asked by Juli on November 17, 2014
  23. Math

    sec 7pi/4 without a calculator Find the exact answer

    asked by Randy on November 7, 2014
  24. Chemistry

    Calculate how much acetylene (C2H2) can be produced from 358 g of H2O and an excess of CaC2 if the percent yield for this reaction is 94.5%. CaC2 + 2H2O -> C2H2 + Ca(OH)2

    asked by Amanda on November 25, 2014
  25. Chemistry

    Estimate the percent ionic character of the BrF bond using this graph:

    asked by Anonymous on November 16, 2014
  26. Fraction

    A girl spends 1/4 of her pocket money on monday and 3/8 on wednesday. What fraction of her money is left

    asked by John on November 3, 2014
  27. math

    Five three digit numbers including N were to be added. While adding, the reverse of N was added by mistake instead of N. Hence the summ increased by 11 times the summ of the digits of N.Eight times the difference of N's units and hundreds digit is 6 more

    asked by Suzanne on November 27, 2014
  28. Chemistry

    Which of the following ionic compounds has the highest melting point? Help: Lattice energy Select one: a. Cs2O b. K2O c. BeO d. SrO e. LiF f. CsI

    asked by Bob on November 10, 2014
  29. Latin

    1.Hodie viis ad Europam ambulamus. 2. Romanas terras pugnis non occupabunt! 3.Carro et equo ex provinciis cibum portabamus. 4.Romani deos templis, sacrificiis et statuis laudabant. 5.Servus in arena gladio pugnabit. I think it is.. 1.Today we walk on the

    asked by Niyiha on November 12, 2014
  30. Stats Math 3

    Suppose a simple random sample of size n=150 is obtained from a population whose size is N=20,000 and whose population proportion with a specified characteristic is p=0.8. Please answer questions (1) through (5) below. (1) Describe the sampling

    asked by LADO on November 26, 2014
  31. Science

    A 40.0 g block of ice at -15 degrees C is dropped into a calorimeter (of negligible heat capacity) containing water at 15 degrees C. When equilibrium is reached, the final temperature is 8.0 degrees C. How much water did the calorimeter contain initially?

    asked by Ciara on November 29, 2014
  32. MATHS

    A boy spent 1/4 of his money on sweets and 3/8 on bus fares. What fraction of his money is left?

    asked by Help on November 2, 2014
  33. business math

    Molly Ellen, bookkeeper for Keystone Company, forgot to send in the payroll taxes due on April 15. She sent the payment November 8. The IRS sent her a penalty charge of 8.80% simple interest on the unpaid taxes of $3,600. Calculate the penalty. (Remember

    asked by Anonymous on November 25, 2014
  34. science

    Which of the following statements is true about fungi? (1 point) A. All fungi are pathogens. B. All fungi are microscopic C. All fungi are living organisms D. All fungi have negative impacts on living things. Plz no rude coments. :-) thank you!

    asked by Just a friend ;-) on November 13, 2014
  35. chemistry

    Rank the following elements by electron affinity, from most positive to most negative EA value: tellurium, bismuth, neon, sodium, iodine i tried Te, Bi, Na, I, Ne and it was incorrect.

    asked by Anna on November 6, 2014
  36. Solar energy

    Consider a crystalline PV module with the following output parameters mentioned at STC (Standard Test Conditions) conditions by the manufacturer. Pmax = 300 W Voc = 40 V Isc = 8 A NOCT = 40°C Temperature coefficient of power = -2 W/°C If the ambient

    asked by Kavitha on November 10, 2014
  37. Calculus

    When estimating distances from a table of velocity data, it is not necessary that the time intervals are equally spaced. After a space ship is launched, the following velocity data is obtained. Use these data to estimate the height above the Earth's

    asked by John James on November 6, 2014
  38. math

    The 3rd term of a geometric progression is nine times the first term.if the second term is one-twenty fourth the 5th term.find the 4th term. solution ar^2=9a r=sqr of 9 r=3.pls help me on how to get the first term(a)

    asked by james on November 27, 2014
  39. SIXTH GRADE MATH

    The ratio of wins to losses for a basketball team is 2:3. Which of the following is a possible total number of games? A. 7 games B. 14 games C. 25 games D. 26 games Can someone show me how to solve this problem please?

    asked by Stephon on November 30, 2014
  40. math

    Sean has 8-inch pieces of toy train track and Ruth has 18-inches of train track. How many of each piece would each child need to build tracks that are equal in length?

    asked by Anonymous on November 30, 2014
  41. Latin I

    I need help with this! (I know we're not supposed to post homework. I will post what i think it is in a min) Sum servus quod* Romani meam (my) patriam occupabant. In proeliis !@#$%^& Romanis non pugnabam. Mea patria erat Graecia*, et nunc mea familia in

    asked by Tory on November 11, 2014
  42. Math Stats

    The following data represent the age (in weeks) at which babies first crawl based on a survey of 12 mothers. 52, 30, 44, 35, 47, 37, 56, 26, 35, 35, 52, 52 __________________________________________________________________________ Construct a 95%

    asked by STATS 4 on November 30, 2014
  43. US Gov't

    Which Roman contribution to political theory was adapted by the Founding Fathers?

    asked by Selena on November 5, 2014
  44. Physics Help Please!

    A block of mass is moving along the horizontal frictionless surface with a speed of 5.70 m/s. If the slope is 11.0° and the coefficient of kinetic friction between the block and the incline is 0.260, how far does the block travel up the incline? Show step

    asked by Kimberly on November 5, 2014
  45. physics

    A child is standing on a platform of a station. A train travelling at 30m/s takes 3.0 secs to pass the child.What is the length of the train. a)10m-this was my answer b)27m c)30m d)90m

    asked by sarah on November 9, 2014
  46. Algebra

    On the opening night of a play at a local theatre, 895 tickets were sold for a total of $10,514. Adult tickets cost $14 each, children's tickets cost $11 each and senior citizen tickets cost $8 each. If the combined number of children and adult tickets

    asked by Jolie on November 5, 2014
  47. Chemistry

    What is the minimum amount of 6.0M H2SO4 necessary to produce 19.0g of H2(g) according to the reaction? 2Al(s)+3H2SO4(aq)→Al2(SO4)3(aq)+3H2(g)

    asked by Jordan on November 14, 2014
  48. Social studies

    In which provinces will you find the western highlands? This is about Pakistan.

    asked by Noor on November 14, 2014
  49. Physics

    An object is placed at a distance of 1.5 m from a screen and a convex lens is interposed between them. The magnification produced is 4. What is the focal length of the lens.

    asked by Rajul on November 8, 2014
  50. chemistry

    Which of the following compounds are organic? Check all that apply. SO2 CH3F C8H18O Cu(NH3)6Cl2

    asked by Shatoya on November 7, 2014
  51. geometric progression

    the 3rd term of a gpis 10 and the 6th term is 80 find the common ratio No2 if the 2nd term of a gp is 4 and the 5th term is 1over 16,the7th term is_

    asked by jessica on November 18, 2014
  52. Physics

    As shown in the figure below, a bullet is fired at and passes a piece of target paper suspended by a massless string. The bullet has a mass of m, a speed v before the collision with the target, and a speed (0.466)v after passing through the target. The

    asked by Ellen Q on November 2, 2014
  53. math

    an average sized dog weighs about A. 15 grams B. 50 grams C. 5,000 grams D. 15,00 grams I don't know the answer, please help

    asked by Anonymous on November 5, 2014
  54. trig

    From the top of a tower of height 75m, a man sees two goats, both due west of him. If the angles of depression of the two goats are 10 degrees and 17 degrees, calculate the distance between them. It wants the angle of depression. I , myself, don't

    asked by Anonymous on November 17, 2014
  55. Chemistry

    3NO2 + H2O -> 2HNO3 + NO Calculate the percent yield for the following reaction if 76.8 g of H2O reacted and 125 g of NO were produced.

    asked by Amanda on November 25, 2014
  56. chemistry due soon

    Which reaction shows that the enthalpy of formation of CS2 is Hf = 89.4 kJ/mol? A. C(s) + 2S(s) CS2(l) + 89.4 kJ B. C(s) + 2S(s) + 89.4 kJ CS2(l) C. C(s) + 2S(s) + 89.4 kJ CS2(l) + 89.4 kJ D. C(s) + 2S(s) CS2(l) I think the answer is a or b

    asked by Morgan on November 7, 2014
  57. chemistry

    A student obtained an average PV value of 42,000 in column (f) of the data table. If the syringe had been able to be adjusted to a volume of 35.0 mL, what would the pressure be inside the flask?

    asked by john on November 5, 2014
  58. calculus

    An observer is 20 m above the ground floor of a large hotel atrium looking at a glass-enclosed elevator shaft that is 20 m horizontally from the observer (see figure). The angle of elevation of the elevator is the angle that the observer's line of sight

    asked by tom on November 9, 2014
  59. english

    All of the following items are expressed in the subjunctive except _____. a wish a condition contrary to fact a that clause expressing necessity a statement of fact

    asked by casey on November 20, 2014
  60. chemistry

    Ima Chemist found the density of Freon-11 (CFCl3) to be 5.58 g/L under her experimental conditions. Her measurements showed that the density of an unknown gas was 4.38 g/L under the same conditions. What is the molar mass of the unknown?

    asked by please help on November 1, 2014
  61. Math (trig)

    The distance from home plate to dead center field in a certain baseball stadium is 409 feet. A baseball diamond is square with a distance from home plate to first plate base 90 feet. How far is it from first base to dead center field? I also need help

    asked by Alexis on November 23, 2014
  62. P.E

    Bacteria, viruses, fungi, and protozoans can all cause different diseases. A. true B. False A?

    asked by Callie on November 11, 2014
  63. algebra help!

    what is the domain of the function below? {(0,2)},(3,1),(5,2),(8,4)}? a. {1,2,4} b. {0,3,5,8} c. {0,1,2,3,4,5,8} d. {(0,2),(3,1),(5,2),(8,4)} ***** Is the following relation a function? {(0.3,0.6),(0.4,0.8),(0.3,0.7),(0.5,0.5)} a. yes b. no ***** c. cannot

    asked by Nikky on November 6, 2014
  64. physics

    A bowling ball of mass 9 kg hits a wall going 11 m/s and rebounds at a speed of 8 m/s. What was the impulse applied to the bowling ball?

    asked by kristine on November 21, 2014
  65. Algebra B

    What is the coefficient of x in the division (18x3 + 12x2 – 3x) ÷ 6x2 ? 3 2 –0.5 –3 I am helping my granddaughter and I need help to explain...

    asked by Anonymous on November 29, 2014
  66. chemistry

    the formula weight of h2so4 is 98. the weight of the acid in 400ml of 0.1M so the solution is?

    asked by rahi on November 19, 2014
  67. math

    A sludge pool is filled by two inlet pipes. One pipe can fill the pool in 14 days and the other pipe can fill it in 22 days. However, if no sewage is added, waste removal will empty the pool in 35 days. How long will it take the two inlet pipes to fill an

    asked by anonymous on November 5, 2014
  68. Science Help - Please

    Can you please tell me if this is a balanced equation for Zinc and acetic acid... Zn(s) + 2CH3COOH(aq)-->Zn(aq)(CH3COO)2 + H2(g) I would appreciate any help

    asked by Cassie on November 17, 2014
  69. english 3

    Question 1 (Multiple Choice Worth 5 points) Which element relies on logic, credibility, and emotion? rhetorical devices theme statements purpose statements thesis statements Question 2 (Multiple Choice Worth 5 points) "AT this second appearing to take the

    asked by abby on November 20, 2014
  70. solar cells

    Imagine that you are in the lab and you can decide the thickness of the Si layer of your solar cell. You want to optimize the solar cell performance for a wavelength of λ=1000nm, for which the absorption coefficient is α(1000nm)=102cm−1. Which of the

    asked by Lahore on November 21, 2014
  71. math

    A ball is thrown vertically upward with an initial velocity of 5 ft/sec from a height of 20 feet. Which function models its motion? i literally am lost and have no idea how to this problem. if i could have help with the steps on how to do the problem and

    asked by Natalie on November 21, 2014
  72. Math liberal Arts

    A bag contains 5 red marbles, 4 blue marbles, and 1 green marble. If a marble is selected at random, what is the probability that it is not blue?

    asked by Jamie on November 19, 2014
  73. Math

    The pressure, P (in lbs/ft2), in a pipe varies over time. Three times an hour, the pressure oscillates from a low of 88 to a high of 254 and then back to a low of 88. The pressure at t=0 is 88. Find a possible cosine formula for P=f(t), where t is time in

    asked by Leah on November 2, 2014
  74. maths

    2% of the village died due to an epidemic. A panic set in, during which 14% of the remaining people left the village . If the population is then reduced to 2107, what was it originally?

    asked by manavi on November 17, 2014
  75. Science

    50 ml of ethyl alcohol amd 40ml of water combined in a beaker add up to 90ml of liquid why is this? (Particle theory)

    asked by Anonymous on November 20, 2014
  76. Chemistry

    Which of the following is NOT true for ΔGrxn? A.) If ΔG°rxn > 0, the reaction is spontaneous in the forward direction. B.) If Q = 1, then ΔGrxn = ΔG°rxn.If ΔG°rxn = 0, the reaction is spontaneous in the reverse direction. C.) If ΔG°rxn > 0, the

    asked by Emma on November 16, 2014
  77. chem

    A 0.167-g sample of an unknown compound contains 0.00278 mol of the compound. Elemental analysis of the acid gives the following percentages by mass: 40.00% C; 6.71% H; 53.29% O. 1.)Determine the molecular formula of this acid. 2.)Determine the molar mass

    asked by Rocky on November 2, 2014
  78. U.S. History

    which of the following was not a weakness of the articles of confederation (1781-1789)? A) a week "league of friendship" among the states B) the requirement of unanimous approval by all 13 states for amendments C) no judicial branch D) no congressional

    asked by Sara on November 24, 2014
  79. Physics

    A 4 kg mass and a 9 kg mass are being held at rest against a compressed spring on a frictionless surface. When the masses are released, the 4 kg mass moves to the east with a speed of 2m/s. What is the velocity of the 9 kg after the are released?

    asked by Matt on November 9, 2014
  80. chemistry

    A 100.0 mL sample of 0.10 M NH3 is titrated with 0.10 M HNO3. Determine the pH of the solution before the addition of any KOH. The Kb of NH3 is 1.8 × 10-5. I thought that I would need a second volume to find the moles of NH3?

    asked by Sydney on November 6, 2014
  81. math

    How many 1/4 cups servings are in 5/8 cup?

    asked by Janet on November 11, 2014
  82. Physics

    A plate falls vertically to the floor and breaks up into three pieces, which slide along the floor. Immediately after the impact, a 200g piece moves along the x-axis with a speed of 2.00m/s and a 235g piece moves along the the y axis with a speed of

    asked by Alex on November 12, 2014
  83. Chemistry

    Sort these species into isoelectronic groups. It doesn't matter which group goes in which box, so long as the correct species are grouped. Ne Mg2+ S2- Ti4+ K+ He Li+ Be2+ N3-

    asked by Brianna on November 6, 2014
  84. STATS MATH 1

    A nutritionist wants to determine how much time nationally people spend eating and drinking. Suppose for a random sample of 1065 people age 15 or older, the mean amount of time spent eating or drinking per day is 1.62 hours with a standard deviation of

    asked by LADO on November 30, 2014
  85. English

    1. Both Walt Whitman and Emily Dickinson were influenced by the Romantics. Choose one of the two poets. Provide at least three ways that he or she reflects Romantic thinking in his or her writing. Then give an example from one of the works that you studied

    asked by Sabrina on November 6, 2014
  86. Calculus angle of elevation

    An observer is 31m above the ground floor of a large hotel atrium looking at a glass-enclosed elevator shaft that is 22m horizontally from the observer. The angle of elevation of the elevator is the angle of the observer's line of sight makes with the

    asked by fredric on November 10, 2014
  87. english 4

    Change the italicized clause to a nominative absolute. Rewrite the entire sentence in the box below. As the hurricane season was over, people returned to the cottages on the beach. Change the italicized clause to a nominative absolute. Rewrite the entire

    asked by dana on November 9, 2014
  88. Please answer

    An agricultural researcher is interested in estimating the mean length of the growing season in a region. Treating the last 10 years as a simple random sample, he obtains the following data, which represent the number of days of the growing season. 153 164

    asked by STATS 2 on November 30, 2014
  89. Physics

    Two objects are moving in the xy-plane. Object A has a mass of 3.2 kg and has a velocity of Va= (2.3 m/s)i + (4.2m/s)j and object B has a mass of 2.9 kg and has a velocity of Vb= (-1.8m/s)i + (2.7m/s)j. What is the total momentum of the system? (should I

    asked by Carl on November 9, 2014
  90. Statistics

    It is reported that 72% of working women use computers at work. Choose 5 working women at random. Find a. The probability that at least 1 doesn't use a computer at work b. The probability that all 5 use a computer in their jobs

    asked by Amber on November 11, 2014
  91. economics

    In which of the following situations would the price of a good be most likely to increase? An increase in production costs results from a rise in wages. A rise in demand happens too quickly for producers to increase production to keep up. A breakthrough in

    asked by 2phoneeeeee on November 9, 2014
  92. Calculus

    A large container has the shape of a frustum of a cone with top radius 5 m, bottom radius 3m, and height 12m. The container is being filled with water at the constant rate 4.9 m^3/min. At what rate is the level of water rising at the instant the water is 2

    asked by Jennifer on November 7, 2014
  93. Math

    tariq jogs 63250 m every week. how much will he jog in 149 days? Give your answer km.

    asked by Noor on November 1, 2014
  94. Spanish

    Hola Sra. Are these correct? La tercera persona plural de pretérito. Cambie las formas entre comillas al pretérito según el ejemplo. Ejemplo: No “han podido” sacar dinero de la máquina. No pudieron sacar dinero de la máquina. Esos dos turistas 1.

    asked by Anna on November 20, 2014
  95. English

    1. Which kind of adjective is used most frequently in ordinary speech or writing? A. Demonstrative B. Article C. Proper D. Common B?

    asked by Sarah on November 11, 2014
  96. CAL

    Which of the following functions is continuous but not differentiable at x = 1? Functions: I.y=3√x-1 II.y={x^2,x≤1 2x,x>1 III. y={x,x≤1 1/x,x>1 I'm not really sure how to do this, but I've been trying and I keep getting both I and III.. am I wrong?

    asked by Racquel on November 17, 2014
  97. science

    A 5.0 kg model vehicle travelling at 14 m/s experiences a rocket boost of 85 N ( in the direction of motion) for 20 s What is the resulting speed? The answer is 350 but i don't know how to get to that answer

    asked by Danny on November 6, 2014
  98. College Physics

    A weightlifter has a basal metabolic rate of 64.6 W. As he is working out, his metabolic rate increases by about 650 W. (a) How many hours does it take him to work off a 450 Calorie bagel if he stays in bed all day? (b) How long does it take him if he's

    asked by Maria on November 24, 2014
  99. Physics

    A 1200 kg car pulls an 820 kg trailer over a rough road. The force of friction acting on the trailer is 650 N [backwards]. Calculate the force that the car exerts on the trailer if (a) the trailer is moving at a constant velocity of 30 km/h [forward] (b)

    asked by Jenuson on November 16, 2014
  100. Physics

    An interacting system of two objects has no external force acting on the system. The first has a mass of 2.00kg and is moving with a velocity (2.00m/s)i + (1.00m/s)j at time t=0s. The second object has a mass of 3.00kg and is moving with a velocity

    asked by Mike on November 9, 2014