Nikita

Most popular questions and responses by Nikita
  1. ENGLISH

    SPPECH ABOUT TRADITIONAL HEALERS SHOULD BE ALLOWED TO PRACTISE AND PRESCRIBE MEDICINE IN HOSPITALS AND CLINICS

    asked on April 20, 2016
  2. Physics

    A simple pendulum is oscillating with an angular amplitude 60°.If mass of bob is 50 gram the tension in the string at mean position is(g=10m/s2)

    asked on December 24, 2016
  3. AP CHEMISTRY

    Phosphoric acid is triprotic acid (three ionizable hydrogens). The values of its stepwise ionization constants are Ka1= 7.5E-5, Ka2= 6.2E-8, and Ka3= 4.2E-13 1) Write the chemical equation for the first ionization reaction of phosphoric acid with water

    asked on February 15, 2012
  4. English

    In these four sentences, the word that’s most obviously a loaded word is? 1. Netta and Jim argued over their views of free trade. 2. Netta and Jim had different views on free trade. 3. Netta and Jim were sharply split over the issue of free trade. 4.

    asked on May 5, 2013
  5. Chemistry

    In the reaction between H2O2 and I-, 15 mL of 0.30M KI, 65. mL of 0.10M H2O2 and 19 mL of 0.020M Na2S2O3 were mixed in a flask containing starch and buffer and the total volume was made up to 500mL with distilled water. The solution turned blue (indicating

    asked on March 22, 2011
  6. Math

    What percentage of the total students chose skateboarding? Chart Walking Boys= 3 Girls=6 Biking Boys=5 Girls=3 Skateboarding Boys=2 Girls=1 A. 10% B. 20% C. 30% D. None of these Is the answer D? Thank you

    asked on March 31, 2015
  7. physics

    An airplane travels 2800 km at a speed of 700 km/h, decreases its speed to 500 km/h for the next 1500 km and travels the last 1000 km at a speed of 400 km/hr. Find the average speed of the plane for the trip.

    asked on September 13, 2011
  8. College chemistry

    A buffered solution is made by adding 50.0 g NH4Cl to 1.00 L of a 0.70 M solution of NH3. Calculate the pH of the final solution. (Assume no volume change.)

    asked on March 10, 2010
  9. 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 on March 13, 2016
  10. Math

    What percentage of the students who chose biking were girls? Chart Walking Boys= 3 Girls=6 Biking Boys=5 Girls=3 Skateboarding Boys=2 Girls=1 A. 30% B. 37.5% C. 40% D. none of these Is the answer D? Thank you

    asked on March 31, 2015
  11. science

    tori wants to increase the tempreature of 500 grams of water from 20 degrees celcius to 100 degrees celecius if the specific heat of water is 4.18j/g. degrees celcius how much heat is needed ?

    asked on March 1, 2011
  12. Math

    Which of the following types of information is NOT suited for display on a scatter plot? A. Relationship between age and number of books read in a year. B. Relationship between height and shoe size. C. Relationship between calories sonsumed and body

    asked on March 31, 2015
  13. English

    This question is based on the following poem: Seasons are celebrations. A year's a Ferris wheel. Both honor our world's habit of spinning 'round a star. 7. Which one of the following sentences best expresses the main idea of this poem? A. The world has a

    asked on May 4, 2013
  14. science

    gold has a specific heat of 0.130j/g. degrees celcuis if 195 joules of heat are added to 15 grans of gold homw much does the tempreature of the gold change

    asked on March 1, 2011
  15. Math

    What percentage of the boys chose walking? Chart Walking Boys= 3 Girls=6 Biking Boys=5 Girls=3 Skateboarding Boys=2 Girls=1 A. 30% B. 45% C. 25% D. None of these Is the answer A? Thank you

    asked on March 31, 2015
  16. maths

    pole A is twice as long as pole B. pole C is 260 cm shorter than pole A. pole C is 1040 cm long, what is the total length of the three poles

    asked on September 27, 2016
  17. Physics

    A 0.535 kg wood block is firmly attached to a very light horizontal spring (k = 175 N/m. It is noted that the block-spring system, when compressed 5.0 cm and released, stretches out 2.3 cm beyond the equilibrium position before stopping and turning back.

    asked on November 18, 2009
  18. Trigonometry

    Solution for sin6xcos4x dx?

    asked on April 19, 2019
  19. Physics

    A massless string runs around two massless, frictionless pulleys, where one pulley is attached to the ceiling, and the other is suspended with a mass m. An object with mass m = 17 kg hangs from one pulley. A force F is exerted on the free end of the string

    asked on November 17, 2009
  20. Bussiness studies,Pure Maths,Geography

    What course is suitable for these subjects?

    asked on February 28, 2019
  21. College History

    HOw did the Scopes trial mirror treds in American society during the 1920s? How did government spending during World war two affect the economic development of the West and SOuth. Please help. Thanks

    asked on October 24, 2008
  22. science

    a plastic container witha mass of 30 grams gains 1,140 joules of heat if the tempreature of the container increases 20 degrees celcius what is the specific heat of the plastic in the container

    asked on March 1, 2011
  23. Chemistry

    Calculate the final temperature of a mixture of 350g of ice cubes at -18 degrees C and 237 g of water at 100 degrees C

    asked on January 25, 2011
  24. Chemistry

    Assuming complete dissociation of the solute, how many grams of KNO3 must be added to 275 mL of water to produce a solution that freezes at -14.5 degrees celcius ? The freezing point for pure water is 0.0 degrees celcius and Kf is equal to 1.86 degrees

    asked on January 16, 2011
  25. Physics

    A roller coaster ride includes a circular loop with radius R = 13.3 m. What minimum speed must the car have at the top to stay in contact with the tracks?

    asked on October 26, 2009
  26. English

    This question is based on the following excerpt from a short story. Inside the bus, in his summer Class-A uniform with its brass glitter and infantry-blue shoulder cordon, Jamie Sabin was going home. Fort Benning would be a fading dream; Preston, Virginia,

    asked on May 4, 2013
  27. Math

    I don't understand how to do this problem if someone can please help me to figure it out thank you. A survey about the student government program at a school finds that of 245 students: -218 students like the program -27 students think the program is

    asked on March 31, 2015
  28. science

    a sliver coin and a gold coin each have a mass of exactly 6.6 grams the specific heat of sliver is 0.235j/g.degrees celcius and the specific heat of gold his 0.130j/g. degrees celcius what coin requires more heat to raise its tempreature by 40 degrees

    asked on March 1, 2011
  29. History

    Discuss how successful the antiwar movement was in changing the course of the war. What methods did they use? How did the movement view the freedom and the war? Thank you for your help

    asked on November 20, 2008
  30. PHYSICS

    Leg traction is applied to a patient's leg as shown in the figure below. If the physician has requested a 33 N force to be applied to the leg, and the angle is θ = 60 degrees. what mass m must be used for the object hanging from the massless cable? Image

    asked on October 14, 2010
  31. English

    What are the overall effectiveness of the speech "Pearson’s address on the inauguration of the national flag of Canada" What are his persuasive goal and what arguments he uses to achieve his purpose?

    asked on May 7, 2017
  32. Physics

    A roller coaster ride includes a circular loop with radius R = 11.6 m. What minimum speed must the car have at the top to stay in contact with the tracks? How would I go around solving this, as in what formula would I need?

    asked on October 26, 2009
  33. science

    a solution containing 4.2g KOHand Ca(OH) 2 is neutralized by an acid. it consumes 0.1 equivalent of acid, calculate the percentage composition of the sample

    asked on February 11, 2016
  34. Calculus

    What is lim (t^3 + 1)/(t lnt) x->infinity

    asked on November 11, 2009
  35. History

    1. COmment on what James Baldwin said of the Civil rights movement challenging the United States to rethink"What it really means by freedom, including whether freedom, applied to all Americans or to part of the population? This is what I put : With their

    asked on November 22, 2008
  36. math

    by what percent os a 100- watt light bulb brighter than a 60 watt light bulb

    asked on May 18, 2013
  37. chemistry

    What is the minimum volume of 2.6 required to completely dissolve 20.0 of potassium metal?

    asked on November 26, 2011
  38. Psy/355

    I need help with my research paper please. 700- to 1,050-word paper in which you examine the concept of motivation. „h Address the following items: o Define motivation. o Identify at least two sources of motivation. o Explain the relationship between

    asked on November 20, 2013
  39. science

    the specific heat of sliver is 0.235j /g.c. how much heat is neeeded to raise the tempreature of an 8 gram sliver ring be 50 degrees celecius

    asked on March 1, 2011
  40. Physics

    The zeppelin Hindenburg exploded on May 6, 1937, in Lakehurst, New Jersey. The accident was due to this type of dirigible using hydrogen (density of H2, M = 2g/mol) as a gas. It carried up to 70 passengers and crew. Estimate how many passengers and crew

    asked on November 24, 2009
  41. Physics

    An object of mass M rests on a horizontal table and is connected to a cable that passes over a pulley and is then fastened to a hanging object with mass m. There is static friction between the horizontal surface and mass M. The coefficient of static

    asked on October 22, 2009
  42. Physics

    An object is thrown vertically upward. a) What are its velocity and acceleration when it reaches its highest altitude? b) What is its acceleration on its way downward half a meter above the ground? My ans: a) velocity is zero and acceleration is 9.8 m/s^2

    asked on October 17, 2009
  43. CHEMISTRY (PLEASE HELP)

    1.What would happen to poisonous chlorine gas if protons were added neutrons were added 2. Boron is 80.20% boron -11 (atomic mass = 11.01 amu) and 19.80% of some isotope form of boron. What must the stomic mass of this second isotope be in order to account

    asked on October 29, 2008
  44. Math

    N is a two digit number such that the number formed by reversing the digits of N is 18 less than N. If the units digit of N is 5, find its tens digit.

    asked on October 8, 2018
  45. Math

    When finding the perimeter of the figure on a grid why do you not count the space inside the grid

    asked on January 10, 2015
  46. Physics

    The zeppelin Hindenburg exploded on May 6, 1937, in Lakehurst, New Jersey. The accident was due to this type of dirigible using hydrogen (density of H2, M = 2g/mol) as a gas. It carried up to 70 passengers and crew. Estimate how many passengers and crew

    asked on November 22, 2009
  47. Calculus

    Find a) lim (ln x)^1/x x->infinity b) lim (x-1)^lnx x->1+

    asked on November 11, 2009
  48. Physics

    An object rests on an inclined surface thanks to the presence of static friction forces between the object and the surface. The magnitude of the friction force that prevents the object from sliding is found to be 30 N. Now, the angle that the surface makes

    asked on October 22, 2009
  49. Positive psychology

    how does autonomy affects sense of freedom

    asked on December 9, 2008
  50. maths

    find the roots of the equation X(square)+7x equal to 0.(b)write down the equation whose roots are -2 and 5. I will be happy to critique your thinking. Write the equation, and solve. In the second, hint: (x+2) is one factor.

    asked on June 6, 2007
  51. precalc

    Three hours after taking a pain medication, 41% of the medication still remains in the bloodstream. Let m be the 1-hour decay factor. a. What is the 3-hour decay factor as a numeric value? What is the 3-hour decay factor in terms of m ? b. Use your results

    asked on March 27, 2017
  52. Psychology

    I need help on collecting information for my research paper. Thanks in advance. Prepare a 1,400- to 1,750-word paper in which you explain the interaction between hormones and behavior, and how these interactions affect the determination of gender identity.

    asked on November 10, 2013
  53. economics

    What two kinds of changes in the capital stock can improve labor productivity? How can each type be illustrated with a per-worker production function? What determines the slope of the per-worker production function?

14-) (Rules of the Game) How do

    asked on October 18, 2011
  54. Physics

    Bernoulli's equation is an expression of: the conservation of mass the conservation of total energy the conservation of kinetic energy the conservation of momentum the conservation of velocity My ans: the equation states that it should be a constant when

    asked on December 2, 2009
  55. Physics

    Hairs on the arms are tilted upward when a person gets goose bumps. The contracting muscle is called arrector pili and connects to the epidermis and the root sheath. Can you identify an action-reaction pair of forces that is involved in its action? My ans:

    asked on October 19, 2009
  56. Physics =(

    a) Can an object accelerate if its SPEED is constant? b) Can ab object accelerate if its VELOCITY is constant?

    asked on October 17, 2009
  57. Physics

    Can the instantaneous velocity of an object at a given time instant be greater than the average velocity over a time interval that includes the given time instant? Can it be less?

    asked on October 17, 2009
  58. business law

    A lot has been said concerning right to work laws. What is the current status of such laws? 1 The congress forbade this law 2 if state passes it, then employees must join a union 3 if state passes it, then employees don't have to join a union 4 if state

    asked on April 12, 2008
  59. physics

    A boat of mass 40 kg is at rest.A dog of mass 4 kg moves in the boat with a velocity of 10 m/s.what is the velocity of the boat?

    asked on December 24, 2016
  60. Phyics

    Force of 18000N is gerenated by the engine of traine having is wages of mass 1000kg each and 2000N is lost against.Calcute accelration $ force impaned on each wages.

    asked on September 26, 2016
  61. ECE405

    Identify and describe at least two ways you can structure and design the classroom environment to enhance anti-bias education and culturally relevant learning

    asked on January 5, 2012
  62. Chemistry

    In this exercise, you need to spike 0.5 L of river water with 1,000 g/L of phosphate. Starting from a stock solution containing 1,000 mg/L of phosphate, calculate and explain in detail how exactly you will conduct this spiking experiment

    asked on March 22, 2011
  63. 12th grade.physics

    three equal and similar charges each of 'q' units are placed at the corners of the square of side 'a' .find the electric field strength at the fourth corner?

    asked on April 10, 2010
  64. Physics

    An object of mass m = 2.7 kg moves with initial speed vinitial = 2.2 m/s, then interacts with its environment, releasing 4.4 J of work. What is the speed of the object after the interaction is completed? My ans: I found KE initially and then subtracted

    asked on November 17, 2009
  65. Physics

    Determine the work done by a person when lowering an object of mass 2.6 kg by a distance of 2.4 m. The person applies a force Fext such that the object moves with constant speed, i.e., without acceleration,

    asked on November 17, 2009
  66. Physics

    In a mechanical experiment with an isolated object, only Ekin and Epot of the object change. If the object accelerates from 5 m/s to 10 m/s, its potential energy has? My ans: Potential energy has decreased by a factor of 2 because kinetic energy has

    asked on November 17, 2009
  67. Calculus

    Using L'Hopital's rule find the limit if exists of; lim x->1 (cosx)/(pi-2x) I got (sinx)/2 but i am not sure about this> Can anyone help me out

    asked on November 11, 2009
  68. Physics

    Which of the following forces does NOT have a zero work done on the object: a)The normal force on a box that slides across a horizontal level floor. b)The weight on a box that slides across a horizontal level floor. c)The normal force on a box that slides

    asked on November 10, 2009
  69. Physics

    A force of 5 N causes the displacement of an object by 3 m in the direction in which the force acts. What work did the object do/has been done on the object? My ans: Work = F * Displacement =+15 J positive because it acts in the direction of the object?

    asked on November 10, 2009
  70. Calculus

    What is implicit differentiation...as in what would be the steps in solving it. I read my textbook but it seems very confusing. 1) Differentiate both sides with respect to x 2) Realize that y is a function of x 3) Solve for y Plus the d/dx notation made it

    asked on November 4, 2009
  71. Calculus

    How do you find factors of this with long division? 2x^3 - 3x^2 + 3x -1 = 0 I just don't know how to do it because there is a coefficient in front of first term.

    asked on October 26, 2009
  72. Physics

    An object slides down a inclined surface in the presence of kinetic friction forces. At the given inclination the kinetic friction force is found to be of magnitude 90 N. Now, the angle that the surface makes with respect to the horizontal is increased and

    asked on October 22, 2009
  73. Physics

    To treat fractures of the humerus shaft, a cast and traction device is used; such that the cast of the upper arm is bent by 100 degrees to 110 degrees at the elbow joint. The traction device is an object of mass M that is hung at the elbow, it keeps the

    asked on October 19, 2009
  74. Physics

    Two forces F1 and F2 act on ab object. It accelerates in a particular direction. Under what circumstances can you predict the direction of force F1 regardless of the specific value of Force F2? My ans: When F2 is weight but I am not sure

    asked on October 19, 2009
  75. Physics

    An object is thrown upward by a person on a train that moves with constant velocity. a) Describe the path of the object as seen by the person throwing it b) Describe the path of the object as seen by a stationary observer outside the train?

    asked on October 17, 2009
  76. Physics

    If an object travels with positive velocity in the x-direction, can it have a negative acceleration along the x-axis at the same time? (I think it can't both should be positive- because when you draw the velocity time graph - the gradient (acc.) is also

    asked on October 17, 2009
  77. Physics

    Work done by conservative forces change only A)PE of the system B)KE of the system C) ME of the system D)None of these

    asked on December 24, 2016
  78. math

    One day,20% of the 950 students at West Junior High were absent. How many students were absent? Is this right? 20/100 950/5 equals 190

    asked on December 19, 2014
  79. Math

    1. Benny is setting up fish tanks at the pet store. He has 8 angel fish, 12 tiger barbs , and 24 guppies. If he wants to have the same number of each kind of fish in every tank, what is the greatest number of tanks he can set up?

    asked on September 18, 2014
  80. calculus

    Construct a sign chart for the derivative. Then determine the relative and absolute extrema for y = -4x2 + 4 on the interval [-3,3].

    asked on February 27, 2013
  81. spanish

    Weather report in Spanish. Help!!!

    asked on October 29, 2012
  82. Human and Social Biology

    A calorimeter was used to oxidise completely 2g of a food sample,causing a temperature rise of 5degrees C in 100cm3 of water(this figure includes the water equivalent of the apparatus). How much energy was present in the food sample(in joule per g)?

    asked on January 8, 2012
  83. Physics

    An object is attached to a horizontal spring. It is initially displaced by distance Δx from the equilibrium position and then released from rest. When the object passes the equilibrium position, its speed will be: a)v = 0 m/s b)v proportional to Δx (the

    asked on December 2, 2009
  84. Physics

    We study water of 1.0 g/cm3 density in an open container with its surface exposed to the atmosphere. If we measure the pressure first at a depth d and find the value p1, and then at twice that depth to find p2, the two results are related in this form: a)

    asked on November 21, 2009
  85. Physics

    Determine the work done by a person when lowering an object of mass 2.6 kg by a distance of 2.4 m. The person applies a force Fext such that the object moves with constant speed, i.e., without acceleration? My ans: W=F*d F = ma But it's saying constant

    asked on November 17, 2009
  86. Physics

    An object of mass 0.7 kg is thrown vertically upwards at a speed of 23 m/s. What is the gravitational potential energy of the object at the highest point of its trajectory?

    asked on November 17, 2009
  87. Physics

    In a physics experiment with an inclined air track, what do you predict about the following: a) Position graph b) Velocity c) Acceleration My ans: For a i predicted there would be a curve and i didn't know why b) velocity will decrease with time but why?

    asked on October 27, 2009
  88. Physics

    How long would it take for the Earth to complete a full turn if a person at 49.2° northern geographical latitude floats apparently weightlessly across the room? Use REarth = 6,385 km for the radius of Earth

    asked on October 26, 2009
  89. Calculus

    find the derivative of f, when f(x)=1/sqrt(x) ok so i tried simplifying it by multiplying top and bottom by conjugate radical, the top simplified to h but the bottom was a mess.

    asked on October 25, 2009
  90. Calculus

    Is f(x)=1/sqrt(x-5) continious at x=2? I know it is discontinuous at x=5 but then I got confused with the three rules. Because function is continuous if f(a) a is in the domain, limit exits, and also lim x->a f(x) = f(a)?

    asked on October 25, 2009
  91. Physics

    An object rests on an inclined surface thanks to the presence of static friction forces between the object and the surface. The magnitude of the friction force that prevents the object from sliding is found to be 30 N. Now, the angle that the surface makes

    asked on October 22, 2009
  92. Physics

    An object is thrown upward by a person on a train that moves with constant velocity. a) Describe the path of the object as seen by the person throwing it b) Describe the path of the object as seen by a stationary observer outside the train?

    asked on October 18, 2009
  93. Physics

    Is there any point along the path of a projectile where its velocity and acceleration vectors are; a) perpendicular to each other b) parallel to each other? My ans: a) I thought its perpendicular at the peak but I didn't know how to explain it b) I thought

    asked on October 18, 2009
  94. Physics

    An object is thrown upward by a person on a train that moves with constant velocity. a) Describe the path of the object as seen by the person throwing it b) Describe the path of the object as seen by a stationary observer outside the train?

    asked on October 18, 2009
  95. Physics

    An object is thrown vertically upward. a) What are its velocity and acceleration when it reaches its highest altitude? b) What is its acceleration on its way downward half a meter above the ground? My ans: a) velocity is zero and acceleration is 9.8 m/s^2

    asked on October 18, 2009
  96. science

    I need help finding a PowerPoint with the importance of installation of actuator blocks on CH-47F aircraft or MH47 aircraft please.

    asked on February 13, 2014
  97. english

    i want the inanimate poem "the wind"

    asked on June 24, 2012
  98. Physics

    Use the following two viscosity values for liquid water: η = 1.8 x 10-3 Ns/m2 at 0 o C η = 2.8 x 10-4 Ns/m2 at 100 o C At what temperature do you need a lesser force to pull a given glass slide with a given speed v though the water?

    asked on December 2, 2009
  99. Physics

    If I double the density of a fluid, the buoyant force on a given piece of material fully immersed in the fluid will?

    asked on November 25, 2009
  100. Physics

    Calculate the acceleration due to the rotation of the Earth of a person in a location 26° northern geographical latitude. Use REarth = 3,686 km for the value of the radius of the Earth.

    asked on November 3, 2009

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