Questions Asked on
March 13, 2016

  1. life orientation

    explain in short paragraph what can trigger spectator aggression on sport

    asked by thando
  2. Life orientation

    Explain fully what is meant by 'Designated subjects'

    asked by Thandeka
  3. chemistry

    When aqueous solutions of chromium(III) bromide and potassium phosphate are combined, solid chromium(III) phosphate and a solution of potassium bromide are formed. The net ionic equation for this reaction is:

    asked by Anonymous
  4. All about DRAMA! P.S. - Please check!

    1. Which of these sentences is using appositive phrase correctly? a. The Grand Canal, which is the oldest man-made waterway in the world, is still used today in China. b. The Grand Canal in China is a man-made waterway, still used, that is the oldest in

    asked by Etta
  5. Math

    20% of the children in sport club play tennis 25% of the children who play tennis also play rounder there are 8 children in the club who play both tennis and rounder how many children are there in the sport club together?

    asked by Sebastian
  6. Science

    How many Btu's are required to change five pounds of ice at 20°F to water at 160°F? a. 2,608 Btu’s b. 1,390 Btu’s c. 1,304 Btu’s d. 141 Btu’s I am trying ((160-20)x.5)x5 but not getting any of the possible choices. What am I missing? Thanks for

    asked by Chris
  7. Math

    At the​ airport, Person A and Person B are walking at the same speed to catch their​ flight, but Person B decides to step onto the moving​ sidewalk, while Person A continues to walk on the stationary sidewalk. If the sidewalk moves at 1 meter per​

    asked by Anonymous
  8. Life Orientation

    Evaluate how each of the following personality types deals with interpersonal conflic: 1.Passive/Introvert 2.Aggressive/Bully 3.Assertive/Extrovert

    asked by Constaf
  9. math

    A map's key shows that every of 5 inches on the map represents 200 miles of actual distance. Suppose the distance between two cities on the map is 7 inches. What is the actual distance between the two cities? Write the rule you used to find the actual

    asked by lia
  10. physics

    a ball of mass 0.1kg is thrown vertically upwards with an initial velocity of 80m/s.calculate the potential energy (I) half way up (ii) at its maximum height.what is the kinetic energy as it leaves the ground

    asked by stephen
  11. Math

    In a recent survey of middle school students about pizza toppings, it was found that 25 students like pepperoni pizza, 31 like banana peppers pizza, and 5 liked both pepperoni and banana peppers on their pizza. If 66 students were surveyed, how many

    asked by no name
  12. Health Sciences

    Your body is covered with skin. It helps regulate body temperature, gathers information from the environment, and what other functions? a. protects the body from allergy, infection, and injury b. protects the body from infection, injury, and scars c.

    asked by Aeliayo
  13. geometry

    Points $F$, $E$, and $D$ are on the sides $\overline{AB}$, $\overline{AC}$, and $\overline{BC}$, respectively, of right $\triangle ABC$ such that $AFDE$ is a square. If $AB = 12$ and $AC = 8$, then what is $AF$?

    asked by nikita
  14. MATH

    A contractor purchases gravel one cubic yard at a time. (a) A gravel driveway L yards long and 6 yards wide is to be poured to a depth of 1 foot. Find a formula for n(L), the number of cubic yards of gravel the contractor buys, assuming that he buys 12

    asked by ally
  15. Math

    The percent of sales tax is 6%. What is the sales tax on a skateboard that costs $98?

    asked by Mildred
  16. life orientation

    what can trigger spectator aggression in sport

    asked by pulane
  17. Physics

    A roadway for stunt drivers is designed for race cars moving at a speed of 95 m/s. A curved section of the roadway is a circular arc of 760 m radius. The roadway is banked so that a vehicle can go around the curve with the friction force from the road

    asked by SJ
  18. Chemistry

    Write the balanced reaction for the incomplete combustion of pentane, assuming the formation of carbon monoxide and water as the products. Enter the coefficient for each compound. (Use the lowest possible coefficients. Use the pull-down boxes to specify

    asked by Carmen
  19. Physics

    The size of Rutherford's atom is about 0.1 nm. (a) Calculate the attractive electrostatic force between an electron and a proton at that distance. (b) Calculate the electrostatic potential energy of that atom. Express the result in unit eV. (c) The size of

    asked by Clara
  20. Physics

    A thin uniform cylindrical turntable of radius 2.1 m and mass 18 kg rotates in a horizontal plane with an initial angular speed of 8 rad/s. The turntable bearing is frictionless. A clump of clay of mass 5.5 kg is dropped onto the turntable and sticks at a

    asked by Luhan
  21. math

    an item is $125, but it's going on sale for $81.25. what is the percentage of the discount?

    asked by susan II
  22. math

    a cylindrical vessel without lid is made from a sheet of metal find the area of metal required if the length of the vessel is 35cm and its diameter is 28cm.

    asked by akash tiwari
  23. chem 12

    1.0 mol of each of the gases, CO, H20, CO2 and H2 are placed in a 2.00L container and allowed to reach equilibrium. It is found at equilibrium 0.40 mol of CO is present. Calculate the value of K eq for the system. C0(g) + H20(g)--- CO2(g) + H2(g) Intial

    asked by George
  24. Math

    you deposit $200 in an account earning 3.5% simple interest. How long will it take for the balance of the account to be $221?

    asked by Misty
  25. accounting

    PR 9-6bAmortization and depletion entries Data related to the acquisition of timber rights and intangible assets during the current year ended December 31 are as follows: a. On December 31, the company determined that $3,400,000 of goodwill was impaired.

    asked by novalita
  26. ANALYTICAL CHEMISTRY

    Explain the following statement: "The validity of a chemical analysis ultimately depends on measuring the response of the analytical procedure to known standards." (b) Calibration curves are necessary in many chemical measurements involving

    asked by KAMBOYI KAMBOYI
  27. chemistry inorganic

    Potassium tetraoxalate has the formula H2C2O4.KHC2O4.xH2O. 1.923 g of the above compound was neutralized by 22.7 mL of 1.000 M NaOH using phenolphthalein as the indicator. Calculate the value of x in the formula.

    asked by Anonymous
  28. Physics

    You stand on a frictionless platform that is rotating with an angular speed of 3.9 rev/s.Your arms are outstretched, and you hold a heavy weight in each hand. The moment of inertia of you, the extended weights, and the platform is 7 kg · m2. When you pull

    asked by Luhan
  29. Life orientation

    Propose 6 practical actions that you can take to address human rights violations of xenophobia in your community

    asked by Minenhle
  30. home school

    In which of the following are 1/2,5/6, and 5/8 arranged in ascending order?

    asked by scott
  31. Physics

    The size of Rutherford's atom is about 0.1 nm. (a) Calculate the speed of an electron that moves around a proton, based on their electrostatic attraction, if they are separated by 0.1 nm. (answer in m/s) (b) Calculate the corresponding de Broglie

    asked by Eduardo
  32. science computer

    Write a program to read the names and age of 10 people and print the name of the oldest person.assume that there are no person of the same age.data is supplied in the following form:name,age,name,age

    asked by k
  33. physics

    determine the kinetic energy of a boy mass 40kg running with velocity of 3m/s

    asked by energy
  34. maths

    The first term of A.P. of 20th terms is 2and its last term is 59 . Find its 6th term from the end .

    asked by komal
  35. scince

    Carbon tetrachloride reacts at high temperatures with oxygen to produce two toxic gases, phosgene and chlorine. CCl4(g) + 1/2O2(g) COCl2(g) + Cl2(g), Kc = 4.4 × 109 at 1,000 K Calculate Kc for the reaction 2CCl4(g) + O2(g) 2COCl2(g) + 2Cl2(g).

    asked by md
  36. Maths

    A drawer contains 8 brown socks and 4 black socks. A sock is taken a random from the drawer, its colour noted and replaced. This is done three times. If X is the discrete variable, the number of brown socks taken. Draw the probability distribution of X.

    asked by Chris
  37. Math

    From a sample set of 10 colored balls--5 green, 3 red and 2 yellow-- 5 are chosen at random WITH replacement. What is the probability that the result will be: green, red, yellow, red, green? Write your answer as a four place decimal number. p(G,R,Y,R,G)

    asked by Jazz
  38. chem12

    2HI(g)--H2(g) + I2(g) k eq= 8.0 2.0 mol of HI are placed in a 4.0L container, and the system is allowed to reach equilibrium. Calculate the equilibrium concentration of all three gases Initial 2HI=0.5 mol/L H2= 0 I2=0 change 2HI= -2x H2= x I2=x equilibrium

    asked by George
  39. physics

    a ball of mass 0.1 is thrown up with an initial velocity of 80m/s calculate the potential energy half way up

    asked by junoo
  40. Life orientation

    Identify three courses or study fields I'm interested in following after grate 12 write them down and in order of preferences provide two reasons of each choice

    asked by sam
  41. physics

    When the ray of light travels from air to glass slab and strikes the surface of separation at 90 degree , then it ..........

    asked by rohit
  42. Trig

    I have a diagram of how far a discus was thrown. From A to B is 100m, C is perpendicular to A, from A to C is 50m, A and B are connected to D (it should be a triangle), A has a 40° angle and B has a 75° angle. C is not perpendicular to D btw.. a. Find AD

    asked by Anonymous
  43. PHYCYSCS

    Three people pull simultaneously on a stubborn donkey. Jack pulls eastward with a force of 79.5 N, Jill pulls with 67.3 N in the northeast direction, and Jane pulls to the southeast with 155 N.

    asked by Syuzi
  44. math

    A floor refinishing company charges $1.91 per square foot to strip and refinish a tile floor for up to 1000 square feet. There is an additional charge of $250 for toxic waste disposal for any job which includes more than 150 square feet of tile. (a) Find

    asked by jen
  45. Physics

    Two metallic spheres of mass .001 kg hang from a point by .3 m strings. Each is given the same amount and sign of charge. After equilibrium is reached, they each make an angle of 20 degrees relative to the vertical. Determine the amount of charge in each

    asked by Robert
  46. Science

    chemical equation for sodium hydrogen carbonate and acetic acid (not balanced)

    asked by Sai Swarup
  47. Chemistry

    In a crazy scenario, the Oylan Vinegar Company has 10,000 gallons of vinegar with 0.622% concentration. This vinegar solution cannot be sold because it's too weak, but the plant manager can't bear to discard it. OVC also has a large batch of vinegar that

    asked by Mads
  48. Physics

    In a double-slit experiment, the fourth-order maximum for wavelength of 450 nm occurs at an angle theta = 90. Thus it is on the verge of being eliminated from the pattern because theta cannot exceed 90. (a) What range of wavelengths in the visible range

    asked by Kristie
  49. MATH

    As dry air moves upward, it expands and in so doing cools at a rate of about 10C for 100m rise, up to about 12 km. a) If the ground temperature is 220, write a formula for the temperature at height x km. Answer: b) What range of temperature can be expected

    asked by samantha
  50. math

    if an invoice is dated april 25 and has credit terms of 3/15 ,n/45 , what is the last date on which the net amount of the invoice can be paid without incurring an penalty

    asked by tiffany
  51. Chemistry

    We did a titration of calcium hydroxide lab in chemistry, once with and once with edta, we have to calculate the solubility for both, and the ksp, for the hcl I did (concentration)*(Volume of hcl used) then that answer divided by two divided by the amount

    asked by Dan
  52. Chemistry

    What is the mass of MgCl2 required to make 500mL if 1.200 M of MgCl2 Solution? I'm having trouble figuring out what the equation looks like. I believe the answer is 57.127g but if so i would like to know why. I did (1.200M*.500mL)/1000* mass of MgCl2. How

    asked by Lemi
  53. math

    you deposit $200 in an account earning 3.5% simple interest. How long will it take for the balance of the account to be $221? is 1 year the answer?

    asked by Misty
  54. computer science

    Write a java program that reads from the user the course code, section and the scores of a student for three exams representing two midterms and a final. The percentage of each of the three exams is of fixed value 30, 30 and 40 percent respectively. Your

    asked by rayn
  55. psychology

    Because you are bored one afternoon, you decide to try a little experiment. You open your eye very wide, extend your thumb, and then poke yourself in the e ure. Aside from being very foolish and in alot of pain, you may learn something about your eye when

    asked by lily
  56. math

    An isosceles triangle has a base of 20 cm. The vertex angle is 82 . Find the length of Each of the two equal sides of the triangle.

    asked by meme
  57. physics

    a horizontal spring is stretched from its equilibrium position when a force of 0.75kg acts on it. then a force of 1.5 kg is attached to the end of the end of the spring and pulled 4.5 cm along a frictionless table from the equilibrium position. the body is

    asked by charles anderson
  58. Maths

    Distance between two points A and B is 100km. Two cars starts from A and B at the same time and in same direction. They meet after 5hrs,then form a linear equation in two variables which shows the differences of distances covered by both the cars.

    asked by soha
  59. BALANCING EQUATION

    NA+NO→NAOH+H2 C4+HSO2→C4SO+SO2+HO

    asked by SAHAL
  60. math

    2/5 of a pool was filled with water. after pouring out 5/7 of the amount of water in the pool, 62 liters of water was needed to fill the pool completely. Find the amount of water needed to fill up the empty pool

    asked by sda
  61. Social Studies

    Which roles did most women feel during the medieval period? A.monks and nuns B.teachers and scholars C.writers and artist D.wives and mothers** Help Please I picked wives and mothers because women didn't have much rights back then.

    asked by Hello
  62. math

    The angle of elevation from a boat to the top of a cliff is 42 degrees. When the boat moves 15 feet closer to the cliff, the angle of elevation increases to 54 degrees. How tall is the cliff?

    asked by Lily
  63. maths

    Ratio between number of sides of two regular polygons is 2:3 and ratio between degree measure of their interior angles is 3:4. Write the name of these polygons.

    asked by shikha
  64. Physics

    A woman with mass of 57 kg stands at the rim of a horizontal table having a moment of inertia of 570 kg m2 and a radius of 1.5 m.The turntable is initially at rest and is free to rotate about a frictionless, vertical axis through its center. The woman then

    asked by Luhan
  65. math

    How to write a real world problem that compares the ratios 5to 9 and 12to 15

    asked by Daniel
  66. Agricultural Sciences

    Determine the size of the pasture by measuring its approximate length and width.One large step is approxinately one metre.

    asked by Khonah
  67. Physics

    If the length of pendulum is 0.8+/-0.01m and time peroid is 2.5+/-0.012 sec. Then percentage error in acceleration due to gravity will be

    asked by Anonymous
  68. Calculus

    Using a linear approximation or differentials, approximate:(26.98)^(3/4) thank you for your help!

    asked by Emma
  69. Descriptive Physics

    You are standing 5 feet from one speaker and 14 feet from another. Both speakers are producing the same sound. If the combined sound from both speakers is especially loud at your location, which of the following could be the wavelength of the sound? Choose

    asked by Thomas
  70. Math

    What equation would I write for this problem. Please help. On Tuesday at noon there were 4 inches of snow on the ground. Then it snowed at a rate of x inches per hour for 7 hours. By Tuesday at 7:00 p.m. there were 25 inches of snow on the ground.

    asked by Patrick
  71. Science Experiment Help

    Just need help answering this one question for my science experiment: "Name another mixture that could be separated like the sugar-water mixture." the sugar-water turned into caramel when I heated it... so what other mixtures do that? Thnx for the help!

    asked by Aly
  72. Physics

    How much energy is required to ionize hydrogen when it is in the state with n = 6? (answer in eV)

    asked by Eduardo
  73. mathematical literacy

    The scale on a map is given as 1:2 000 000.the distance between two towns on the map is 4,3cm?

    asked by ntiso
  74. Chemistry-DrBob222

    I got an answer of -1.34 x 10^3 KJ/mol. A 10.00 mL aliquot of 0.100 M NaOH is added to 15.00 mL of 0.100M HCl in a coffee cup calorimeter. The initial temperature of the two dilute liquids were both 25.0 degrees C and the final temperature of the mixture

    asked by Nevaeh
  75. science

    When the ray of light travels from air to glass slab and strikes the surface of separation at 90 degree , then it ..........

    asked by rohit
  76. math lit,geography,life sciences,english,agric sci

    Can I qualify if I want to study a nursing course and what are the levels I am expected to get

    asked by Ntombie
  77. Physics

    A non-reflecting single layer of a lens coating is to be deposited on a lens of refractive index n = 1.7. Determine the refractive index of a coating material and the thickness required to produce zero reflection for light of wavelength 540 nm.

    asked by Lowes
  78. Algebra

    The length of a rectangular piece of steel in a bridge is 3 meters less than double the width. The perimeter of the piece of steel is 48 meters. Find the length of the steel. Find the width. What steps or formula do I use to solve this problem.

    asked by Dee365
  79. maths

    The first term of A.P. of 20th terms is 2and its last term is 59 . Find its 6th term from the end .

    asked by komal
  80. Chemistry

    I need help on this question. Identify the mistakes in the following balanced equations. Rewrite the equation to make it correct. Each question has one mistake to correct. a) C9H20+12O2 -> 9CO2 + 10H2O b) H2+Cl -> 2HCl

    asked by Josh
  81. ALGEBRA

    DETERMINE WHETHER (6,-2) IS A SOLUTION OF Y=-2/3X

    asked by Anonymous
  82. chemistry

    A 1L flask contains 0.2moles of air open to atmosphere at 0degree celcius. Upon heating some of the air is lost. What is the percentage of air remaining in the flask?

    asked by william
  83. Science

    Volume of 12M HCL taken for preparing 1M HCL (100 ml Sol {

    asked by Bushra
  84. Asthana

    tell me structural formula of 2-methyl propane,2methyl propene,propanal

    asked by Vaishnavee
  85. math

    The business opened with a debt of $3400. After 4 years, it accumulated profit of $4900. Find the profit as a function of time t, knowing the profit function is linear. P(t)=

    asked by samantha
  86. Chemistry

    This is for grade 11 chemistry, balancing equations. Help asap? I'd like to get it done by tonight, if possible. Type of reaction: Predict product in words: Write Balance equation: Heres the question. Aluminum+ Zinc Sulfide =

    asked by Colton
  87. geography

    what are some settlement patterns in the Sahara desert

    asked by jasmine
  88. Math

    A team of street pavers was assigned the task of paving two parking lots one twice the size of the other. They worked for the first half of the day on the larger parking lot. Then the team split into two groups of equal number. The first group continued

    asked by Seerat
  89. Economics

    Explain discretionary fiscal policy and automatic fiscal policy (automatic stabilizers).

    asked by Anonymous
  90. algebra

    solve by elimination method to find an ordered pair. 7x-y=27 x+9y=77

    asked by leigh
  91. physics

    The threshold wavelength for photoelectric emission in metal is 600 nm.Find the maximum kinetic energy of the electrons emitted when it is exposed to the wavelength 200 nm

    asked by Anonymous
  92. Physics

    A 5000-Hz car horn is blasted while the car is moving at 35.0 m/s toward a dazed physics student (stationary). What is the frequency of the horn heard by the student. Assume the temperature is 0°C

    asked by Sneha
  93. maths literacy, geography, history, tourism

    Can i become a animator if im doing this subjects and are there buseries for me

    asked by lunga
  94. Chemistry-DrBob222

    Where did you get 5E-5. Is this how you set it up? 0.01 x 0.05 = 5E-4 If so, is it supposed to be 5E-4 instead of 5E-5? What is the equilibrium constant for a weak acid HA that dissociates 1% at an initial concentration of 0.05 M according to the following

    asked by Nevaeh
  95. Business studies,Geography,Tourism,Economics,lit

    Which career can i woek for and which is interesting and pays a lot

    asked by Mosibudi
  96. Algebra

    Suppose that Y varies directly with X, and Y=4 when X=16 (a) Write a direct variation equation that relates X and Y (b) Find Y when X=3

    asked by Anonymous
  97. Physics

    An airplane has a velocity of v=(5m/s)i + (4m/s)j at t1= 3s. For the time interval from t1=3 seconds to t2=13s the average acceleration is a= (.5m/s^2)i + (.2m/s^2)j. At 13s find the magnitude and direction of the velocity of the airplane.

    asked by Bobby
  98. science

    If I mix 300g of reactant A with 100g of reactant B in a close system how much will it weigh

    asked by donna
  99. English

    Can you please check my answers? 1.) In July, our neighbors had (went, gone) to Europe. Gone 2.) Have you (rode, ridden) the gray mare? Ridden 3.) A mountain climber must have (ran,run) into difficulty. Ran 4.) George should not have (wrote, written) the

    asked by Destiny
  100. life orientation

    indetify three courses are interested after grade 12

    asked by samuel
  101. Physics

    A partide of mass m moves along a trajectory given by x= a cos δ1 t and y = asinδ2 t . Find rand y component of the force acting on the patde, potential energy, kinetic enenev of the partide and hence show that the total energe E= KE + PE =1/2 m(a*2

    asked by jan
  102. English

    1. I am a good cook, amn't I? 2. I am a good cook, aren't I? 3. I am a good cook, ain't I? 4. I am a good cook, am I not? (Which one is commonly used? Which one is used in written forms?) ------------------- 5. I amn't a good cook. 6. I aren't a good cook.

    asked by rfvv
  103. Calculus

    Starting with an initial guess of x=2, use Newton’s method to approximate (Third root of 7). Stop the iterations when your approximations converge to four decimal places of accuracy. Compare with the approximation provided by your calculator I'm so stuck

    asked by Tia
  104. Physics

    A body of mass 10g oscillates with Simple Harmonic Motion of amplitude 4cm and time period 0.50s. Calculate: a) The maximum acceleration. b) The maximum kinetic energy.

    asked by Alex
  105. Physics

    A falling rock has a speed of 1.5 m/s. What is the velocity of the rock when it hits the ground 5 seconds later? Give the magnitude and direction

    asked by Bob
  106. math

    a concert was held in a school. students tickets cost 5 dollars and regular cost 8 dollars. The school sold 284 tickets for 1600 dollars. Find the number of student tickets and the number of regular tickets sold.

    asked by sda
  107. Physics

    A grizzly bear is running at a speed of 25m/s with respect to a man. The man is running 20m/s with respect to a rock. What is the bears speed with respect to the rock. (ALL VELOCITIES ARE IN THE SAME DIRECTION AND POSITIVE)

    asked by Bobby
  108. physics

    After placing a 0.500 m dent in the landlords van, the two management students are told they and their 200 daN beer freezer have to go. The new ramp is inclined at an angle of 32.1 o relative to the horizontal. The coefficient of static friction between

    asked by tom
  109. Agricultural Sciences

    Determine the size of the pasture by measuring its approximate length and width.One large step is approxinately one metre.

    asked by Nonhle
  110. Physics

    A partide of mass m moves along a trajectory given by x= a cos δ1 t and y = asinδ2 t . Find rand y component of the force acting on the patde, potential energy, kinetic enenev of the partide and hence show that the total energe E= KE + PE =1/2 m(a*2

    asked by jojo
  111. science

    A balloon filled with 3.5 L of helium at 20 °C and 3 atm. What will be the new pressure if its volume increases to 17.5 L at constant temperature?

    asked by Anonymous
  112. Chemistry-DrBob222

    Is the answer for part c 0.91? A 1.0 L ball containing Ar at 5 atm is connected to a 10.0 L ball containing N2 at 2atm. A)Calculate the partial pressures and mole fractions of Ar and N2 after the valve is opened and the gases are allowed to mix (they fill

    asked by Nevaeh
  113. Biology

    Compare and contrast between these two plant polysaccharides : starch and cellulose.

    asked by Petrus
  114. environmental technology

    Calculate the spacing required for the water table to drop from the soil surface to a depth of 30cm in a 2days period over the area 200hecters from the following data k=4cm/hr,the drain are to be placed 105cm below the soil surface the impeamable layer is

    asked by kaycee
  115. Algebra

    a certain recipe asks for ¼ of granola. how much is needed to make ¾ of a recipe?

    asked by Mike
  116. managerial economics

    calculating empirical production function Dimex Fabrication Co

    asked by Anonymous
  117. physics

    Explain the difference between a GET and MOSFET on the basis of their construction and working

    asked by umesh
  118. physics

    Women and overweight people often experience backpain. Let us explore the reason for this. Assume the women has a weight of 60.0 daN before pregnancy. Suppose she gains 10.0 daN during pregnancy, due to weight of the fetus, placenta, amniotic fluid, etc.

    asked by tom
  119. science

    initial condition V1= P1= formula

    asked by beah
  120. math

    (x - 2)10; 8th term

    asked by mico
  121. Agricultural Sciemces

    Determine the size of the pasture by measuring its approximate length and width.One large step is approxinately one metre.

    asked by Anonymous
  122. Physics

    A pendulum is constructed of a mass m connected to a mass ess rigid rod of lengthl. As shownin the figure, the other end of the rodis suspended from a point on the ring ofradius R. The pendulum is free to swing in a vertical plane that is also the plane of

    asked by jan
  123. Physics

    What is the wavelength of light that can cause a transition of an electron in the hydrogen atom from the orbit with n = 6 to n = 8?(answer in µm)

    asked by Clara
  124. Physics

    A grizzly bear is running at a speed of 25m/s with respect to a man. The man is running 20m/s with respect to a rock. What is the bears speed with respect to the rock. (ALL VELOCITIES ARE IN THE SAME DIRECTION AND POSITIVE)

    asked by Bobby
  125. calculus

    area between the curves y^2=4x , 7y=2x+20 , 2x+3y=0

    asked by angelo
  126. Physics

    A pendulum is constructed of a mass m connected to a mass ess rigid rod of lengthl. As shownin the figure, the other end of the rodis suspended from a point on the ring ofradius R. The pendulum is free to swing in a vertical plane that is also the plane of

    asked by jojo
  127. Science

    A car is traveling north at 15 m/s ten minutes later it is traveling at 70 m/s what is the car s initial velocity what is its acceleration

    asked by Kathy
  128. science

    How can geothermal energy affect the use of fossil fuels?

    asked by reiley
  129. maths

    a,b,cis natural numbers and the sides of a rightangled triangle theline from altitude to hypotenues is h if 1/a+1/b+1/h - 1 find a,b,c

    asked by alia
  130. SCIENCE

    At 500K,1.00mol of ONCl is introduced into 2.50dm3 closed vessel.At equilibrium the ONCl is 6.5%dissoiated.What is the value of the Kc for equilibrium at 500K

    asked by MAMBWE
  131. English-poem help

    Is the poem I wrote a sonnet? My aunt has cancer, i don't know how, i sit and wonder why. I get mad at God and often say i hate him. I know its not his fault, but who am i supposed to blame, its all just bad shame. I walk to see her on her bed, in pain,

    asked by Bob
  132. Algebra

    13. -4 + 7x + 4 = 3y Find the constant of variation. Someone help, I can't understand how to do it. None of the websites I look up have good explanations, help?

    asked by ThissStudent
  133. english,maths,chem,phy,bio,agric,civic,etc

    What are the equations of motion.

    asked by samuel
  134. biology

    what type of cell recognizes cells that have been infected by viruses because the infected cells have viral proteins on their surfaces?

    asked by katie
  135. Chemistry

    What is the mass needed to make 8.5L of a 4.0 M solutution of Na2SO4? (Na=23, s=32, O=16)

    asked by jason
  136. math

    (x - 2)10; 8th term (2x + y)8; middle term

    asked by mico
  137. English

    Why do people have stress learning new information?

    asked by Boberto
  138. PHYSICS

    Calculate for Bohr's atomic model the speed of the orbiting electron in the n = 7 state. (Answer in m/s)

    asked by Physics Lover
  139. Phys

    A pendulum is constructed of a mass m connected to a mass ess rigid rod of lengthl. As shownin the figure, the other end of the rodis suspended from a point on the ring ofradius R. The pendulum is free to swing in a vertical plane that is also the plane of

    asked by Sara
  140. Physics

    What is the difference between gravitational potential energy and electric potential energy?

    asked by MeritGodwin
  141. Physics

    An airplane has a velocity of v=(5m/s)i + (4m/s)j at t1= 3s. For the time interval from t1=3 seconds to t2=13s the average acceleration is a= (.5m/s^2)i + (.2m/s^2)j. At 13s find the magnitude and direction of the velocity of the airplane.

    asked by Bobby
  142. Algebra

    Is .0010001... Rational?

    asked by Sally
  143. history

    this quotation presents a justification for

    asked by kashsh
  144. networking

    what is the difference between vlan and subnetting ?

    asked by sofia
  145. Math

    Sunitha is interested to find the Relation between the diameters of Jupiter and the earth.From the given data,it is known that the volume of Jupiter is 729 times the volume of earth.she concluded that the diameter of Jupiter is 9 times the diameter of the

    asked by Shridevi
  146. Math

    A recipe for salt dough is one part flour and three parts salt. Express the amount of salt in recipe as a fraction. If you double the recipe to make the dough for crafts,using two cups of flour,how much salt will you need?

    asked by OBINNAYA ELUWA