# NATASHA

Popular questions and responses by NATASHA

2. ## physics

A net force of 25N is applied for 5.7s to a 12-kg box initially at rest. Waht is the speed of the box at the end of the 5.7s interval?

3. ## physics

Two cars cover the same distance in a straight line. Car A covers the distance at a constant velocity. Car B starts from rest and maintains a constant acceleration. Both cars cover a distance of 487 m in 216 s. Assume that they are moving in the +x

4. ## physics

Find the power delivered to an element at t=3 ms if the current entering its positive terminal is i=5cos60πt A and the voltage is V=3 di/dt

5. ## physics

A dynamite blast at a quarry launches a chunk of rock straight upward, and 2.0s later it is rising at a speed of 15m/s. Assuming air resistance has no effect, calculate its speed A) at launch and B) 5.0s after lauch

6. ## Physics

At an instant when a soccer ball is in contact with the foot of a player kicking it, the horizontal or x component of the ball's acceleration is 810m/s^2 and the vertical or y component of its acceleration is 110m/s^2. The ball's mass is 0.43kg. what is

7. ## physics

(a) Just for fun, a person jumps from rest from the top of a cliff overlooking a lake. In falling through a distance H, she acquires a certain speed v. Assuming free-fall conditions, how much farther must she fall in order to acquire speed 2v? Express your

8. ## physics

When a 58g tennis ball is served, it accelerates from rest to a speed of 45m/s. The impact with the racket gives the ball a constant acceleration over a distance of 44cm. What is the magnitude of the net force acting on the ball?

9. ## physics

The drawing shows box 1 resting on a table, with box 2 resting on top of box 1. A massless rope passes over a massless, frictionless pulley. One end of the rope is connected to box 2, and the other end is connected to box 3. The weights of the three boxes

10. ## physics

Two charges, -17 and +3.6 µC, are fixed in place and separated by 3.2 m. a) At what spot along a line through the charges is the net electric field zero? Locate this spot relative to the positive charge. (Hint: The spot does not necessarily lie between

11. ## Home Economics

What are the three main areas of home economics?

12. ## English

What is comparative and superlative For: Tired For comparative I think it is more tired And for superlative more tiring?

13. ## physics

The drawing shows a square, each side of which has a length of L = 0.25 m. Two different positive charges q1 and q2 are fixed at the corners of the square. Find the electric potential energy of a third charge q3 = -4.35 10-8 C placed at corner A and then

14. ## Math

Find the next two terms for the sequence 2 6 10 14...

15. ## Language arts

In an essay, explain how the alliteration in full fathom five helps convey the atmosphere of the poem. Think about where is the poem is set and what is described. Then, give two examples of alliteration in the poem, and describe how they add to the

16. ## Math

A garden is measuring 12m by 16m is to have a path around it, increasing the total area to 285 square metre. what is the width of the path? I went like that (16+2x).(12+2x)= 285 4x^2+56x-93=0 I am stuck now

17. ## Math

A grocery store sells 3 pounds of grapes for \$3.45 another grocery store sells 5 pounds of grapes for \$5.75 which equation represents the price of grapes

18. ## Math

Who is working harder, Fred running a 10 min mile pace at a 10% grade or Pete who is 55 kg, cycling on a Monarch ergometer with a resistance of 2.5 kg and a pedal rate of 60 rpm?

19. ## PLZ Check my Science Project's summary?!

The following r the instructions to my Project: - Compose a scientific summary of your method, observations, data, and conclusions. In addition, be sure to answer the questions below in your report. 1. Why does the first method for determining volume work

20. ## physics

A container holds 2.2 mol of gas. The total average kinetic energy of the gas molecules in the container is equal to the kinetic energy of a 7.7x10-3 kg bullet with a speed of 650 m/s. What is the Kelvin temperature of the gas?

21. ## Chemistry

500ml of 0.250M Na2SO4 solution is added to an aqueous solution of 15.00 g of BaCl2 resulting in the formation of white precipitate of BaSO4. How many moles and how many grams of BaSO4 are formed?

22. ## english literature

what is the significance of the odan tree in africa?

23. ## physics

A "swing" ride at a carnival consists of chairs that are swung in a circle by 12.0 m cables attached to a vertical rotating pole, as the drawing shows. (θ = 61.0°) Suppose the total mass of a chair and its occupant is 196 kg. the tension is 3961.97N Find

24. ## algebra 2

4p + 2q = 8 and q = 2p +1 solve by substitution

25. ## physics

An 18-year-old runner can complete a 10.0 km course with an average speed of 4.58 m/s. A 50-year-old runner can cover the same distance with an average speed of 4.36 m/s. How much later (in seconds) should the younger runner start in order to finish the

26. ## Statistics

Across the USA, results for these exams are normally distributed. What does that mean and why is this the case? If you were to create a histogram of all GRE scores, what would you expect the histogram to look like? Would it be symmetrical? Would it be bell

27. ## Math

What is the functional capacity in METs and Vo2 (mL/kg/min) of a 70 kg man who completed Stage V (3mph, 12.5% grade) of a Balke TM test?

28. ## biostatistics

among coffee drinkers, men drink a mean of 3.2 cups per day with a standard deviation of 0.8 cups. Assume the number of coffee drinks per day follows a normal distribution. a. What proportion drinks 2 cups per day or more? b. What proportion drink no more

29. ## physics

A spherical surface completely surrounds a collection of charges. Find the electric flux (with its sign) through the surface if the collection consists of (a) a single +1.80 × 10-6 C charge, (b) a single -8.20 × 10-6 C charge, and (c) both of the charges

30. ## Science

A mixture is prepared by adding 100 ml of 0.10M Na2CrO4 to 100.ml of ).10 N AgNO3. A precipitate forms in this mixture. The precipitate is separated from the mixture by filtration. Question: What quantity of solid product is produced?

31. ## physics

A 20kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 80N and is directed at a angle of 30.0degrees above the horizontal. Determine the coefficient of kinetic friction.

32. ## Math

A 12-foot ladder is leaning against a wall. The base of the ladder is 4 feet from the wall. How tall is the wall?

33. ## science/math

width of a normal sheet of paper is 8.5inches. Convert this length to kilometers

34. ## physics

The drawing shows a wire tooth brace used by orthodontists. The topmost tooth is protruding slightly, and the tension in the wire exerts two forces and ' on this tooth in order to bring it back into alignment. If the forces have the same magnitude of 17.0

35. ## Chem again

The solubility of Acetanilide in hot and cold water is: Temperature.........Solubility in 100ml H20 100C....................5.5g 0C........................0.53g What is the maximum recovery if 5.0g of acetanilide is recrystallized from 100mL of water? My

36. ## chemistry

why the suction of a vacuum filtration apparatus is broken before the vacuum is turned off

37. ## chemistry

Liquid hexane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water . Suppose 43.9 g of hexane is mixed with 57. g of oxygen. Calculate the minimum mass of hexane that could be left over by the chemical reaction. Round your

38. ## Mathematics

If a 75 kg person pedals a Monarch leg ergometer at 50 rpm, how much resistance is needed to work at a level of 11 METs?

39. ## biostatistics

8. The following data were collected in a clinical trial to compare a new drug to a placebo for its effectiveness in lowering total serum cholesterol. Generate a 95% confidence interval for the difference in mean total cholesterol levels between

40. ## Elements of Psychology

I need help on these questions. My answers have the < by them 1. In a typical neuron, sheaths of fatty tissue called _______ surround the axon. A. terminals C. synapse B. dendrites D. myelin

41. ## Organic Chemistry

Draw the structure of: (E)-1,2-dibromo-3-isopropyl-2-hexene My approach: I know how to answer this question in terms of basic nomeclature but I have no idea what (E) means in this.

42. ## algebra ll

find the range of the relation (-1,4),(2,5), (3,5)then determine if the relation is a funtion or not thank u

43. ## chemistry

A rigid container of O has a pressure of 340 kPa at a temperature of 713 K. What is the pressure at 273 K?

44. ## math

16a - 5b - (-6a - 15b) - (-4b)

45. ## Early Childhood Education

Appropriate materials and equipment for outdoor play should contain which? 1. a lot of immovable parts 2. some loose parts 3. large,simple,steel units designed for a single purpose. 4. hard,strong surfaces for ground cover Shouldn't the materials and

46. ## physics

Calculate the net force required to give a 3000 kg truck an acceleration of 2.5m per squared

47. ## physics

A moving particle encounters an external electric field that decreases its kinetic energy from 9100 eV to 6630 eV as the particle moves from position A to position B. The electric potential at A is -59.5 V, and the electric potential at B is +26.1 V.

48. ## Physics

A car accelerates uniformly from rest to 21.0 m/s in 6.1 s along a level stretch of road. Ignoring friction, determine the average power required to accelerate the car if the weight of the car is the following. A) 8.0e3N B) 1.2e4N (The answer needs to be

49. ## physics

An electron is a subatomic particle (m = 9.11 10-31 kg) that is subject to electric forces. An electron moving in the +x direction accelerates from an initial velocity of +5.21 105 m/s to a final velocity of +2.29 106 m/s while traveling a distance of

50. ## Physics

An 18-year-old runner can complete a 10.0-km course with an average speed of 4.39 m/s. A 50-year-old runner can cover the same distance with an average speed of 4.27 m/s. How much later (in seconds) should the younger runner start in order to finish the

51. ## physics

What equation gives the position as a function of time for an object with constant acceleration?

52. ## Physics

In a historical movie, two knights on horseback start from rest 88.0m apart and ride directly toward each other to do battle. Sir George's acceleration has a magnitude of 0.300m/s (squared), While Sir Alfred's has a magnitude of 0.200m/s (squared).

53. ## football names

What is the football name of this clue, seven squared?

54. ## math

(5x)+14=14+(5x)is this associative property of addition?

55. ## chemistry

The equation Mg(s) 2HCl(aq)---MgCl2 (aq) H2(g) is an example of which type of reaction?

56. ## English

What is the propositional phrase preposition and object in the following 1. I hung the valuable painting in the library. 2. The eggs inside the nest are not to be distributed.

57. ## algebra 1

LaTasha was presented with the following data set and argued that there was no correlation between x and y. Is LaTasha correct? Use the regression equation to explain your reasoning.

58. ## Calculus

A statue 5m high is standing on a base 8m high. Is an observer's eye is 2.5 m above the ground, how far should he stand from the base of the statue in order that the angle between his lines of sight to the top and bottom of the statue be a maximum.

59. ## Math TRUE or FALSE Help

You do not need to flip the inequality sign when solving the inequality -3t + 7 ≥ 9. TRUE or FALSE? I'm not that great at knowing when to flip inequality signs... Can someone help me ASAP? Thank you for your assistance in advance. Nic

60. ## Physics

Two soccer players start from rest, 30 m apart. They run directly toward each other, both players accelerating. The first player’s acceleration has a magnitude of 0.49 m/s2. The second player’s acceleration has a magnitude of 0.43 m/s2. (a) How much

61. ## Math

Which of the following correctly lists angle pairs that have the same sums of 180 degrees & 90 degrees? A. adjacent angles, congruent angles B. complementary angles, vertical angles C. supplementary angles, complementary angles*** D. vertical angles,

62. ## English

1-2. My uncle decided to splurge and _____with a country club because golf is his favorite____.(affiliate,deficit) 3-4. Gail didn't ____from smoking cigarettes until her employer made not smoking ____.Keeping her job was a very good incentive to get her to

63. ## physics

A small drop of water is suspended motionless in air by a uniform electric field that is directed upward and has a magnitude of 12300 N/C. The mass of the water drop is 4.71 × 10-9 kg. How many excess electrons or protons reside on the drop?

64. ## physics

A 1000kg car accelerates from rest to 30m/s over a distance of 20m. a) ignoring friction and air resistance, what is the power generated by the motor? b) if the friction and air resistance is 200N, what is the power generated by the motor?

65. ## physics

A two staged rocket moves in space at a constant velocity of 4900m/s. The two stages are then separated by a small explosive charge between them. Immediately after the explosion the velocity of the 1200kg upper stage is 5700m/s in the same direction as

66. ## physics

In a football game, a receiver is standing still, having just caught a pass. Before he can move, a tackler, running at a velocity of 4.5m/s, grabs him. The tackler holds onto the receiver, and and the two move off together with a velocity of 2.6m/s. The

67. ## physics

An electron is a subatomic particle (m = 9.11 x10-31 kg) that is subject to electric forces. An electron moving in the +x direction accelerates from an initial velocity of +5.11 x 105 m/s to a final velocity of 1.67 x 106 m/s while traveling a distance of

68. ## Physics

The large blade of a helicopter is rotating in a horizontal circle. The length of the blade is 6.7m, measured from its tip to the center of the circle. Find the ratio of the centripetal acceleration at the end of the blade to that which exists at a point

69. ## Physics

Can you think of any ways to measure instantaneous speed directly?

70. ## english

One of the four underlined sections may mark an error in punctuation. Choose the option that marks the error in punctuation. If there is no error, choose No error. For most of us who are not reading specialists, learning to read is a mysterious process;

71. ## math

What is the meaning of angle of depression and angle of elevation?

72. ## Chemistry

I am reading through material for a recrystallization experiment, and I had a few things I wasn't sure about; - Why once filtered, should the recrystallization solution be allowed to cool slowly, undisturbed, rather than quickly? and -What makes a good

73. ## Organic Chemistry

what is the lewis structure for this: CH3OH2+ I tried drawing one but I got my formal charges wrong, and it didn't add up

74. ## 2 masses, pulley on a frictionless incline

an object of mass m1= 311 g on an inclined surface. The angle of the inclined surface is θ = 40o with the horizontal. The object m1 is connected to a second object of mass m2 = 355 g on the adjacent horizontal surface. Further, an external force of

75. ## calc

a machine can produce 12 clay figure per hour.it costs \$750 to set up the machine and \$6 per hour to run the machine.each clay figure requires \$2 of material to produce.if each clay figure will sell for \$10 charged,express the revenue cost,and profit in

76. ## math

For each piecewise function, find the specified function values. g(x)={x+4, for x1 g(-4),g(0),g(1), and g(3)

77. ## Algebra

Rationalize the denominator of each expression. Assume that all variables are positive. I understand how to divide them, but don't exactly know how to rationalize them. ã3xy^2/ã5xy^3 Thanks in advance.

78. ## history

I need to write 2 essays: 1. following the break up of the Soviet Union, what are some of the major problems faced by many of the new countries? 2. What role has the concept of nationalism played in the life of Russia in the past and present? pleaseeee

79. ## English

Are the commas placed correctly in (A) or (B)? (A) The reason is often that the interviewer wants an overview, or opening statement summarizing how your skills, experiences and background are a good fit for the internship. (B) The reason is often that the

80. ## Algebra

Use arrow notation to wrote a rule for this translation. the cornites used to be a= 1,3 b= 4,5 c= 3,1 but then were shifted 1 unit to the right and 2 units down. The aigted coordinates are a= 2,1 b= 5,2 c= 4,-1 I dont understand the rule part.

81. ## pure physics

a stone weighs 0.25N in air and o.20N when completely immersed in water. what is the the up thrust on the stone?

82. ## math

how do you express the side length of a square as a radical, in simplist form, if the area is 252 ft. squared?

83. ## mathematics

Ruth has \$130 in all. Kevin has \$115 in all. If Ruth has 1 and a half times as much money as kevin, how much money does ruth have?

84. ## Physics

In the amusement park ride known as Magic Mountain Superman, powerful magnets accelerate a car and its riders from rest to 37.1 m/s in a time of 6.28 s. The mass of the car and riders is 8.88 × 103 kg. Find the average net force exerted on the car and

85. ## English

In his literary work, A Long Way Gone: Memoirs of a Boy Soldier, Ishamael Beah uses symbols to underscore his central theme of oppression and/or freedom. for this thesis statement, the three symbols I wana use are Cassettes, moon, and AK-47 gun. Are these

86. ## Math

How do you solve 6k-8=k+2???

87. ## Maths

The second term in the expansion of (1-x)(1+2x)Λn is 19x. Find the value of n

88. ## math

A rectangular plot is bounded at the back by a river. No fencing is needed along the river and there is to be an opening in front of about 24 meters. If the cost of fencing in front is \$1500 per meter and the cost of fencing the sides is \$1000 per meter,

89. ## math

Morgan Company received from Lee Company an invoice dated September 27. Terms were 2-10 EOM. List price on the invoice was \$5000.00(freight not included). Morgan receives a 9/7 chain discount. Freight charges are Morgans resposibility but Lee agreed to

90. ## chemistry

an ionic equation has 2H+(AQ)on the left side and H2(g) on the right. Are these species spectators? explain.

91. ## pre calculus

Algebraically solve the system of equations using any method you wish 3x-10y+z=5 -4x+9y-z=-6 -13y+z=2

92. ## pre calculus

find the real zeros of f(x)=x^4+6x^3-11x^2-24x+28

93. ## physics

An electric field of 264,000 N/C points due west at a certain spot. What are the magnitude and direction of the force that acts on a charge of -6.3 µC at this spot?

94. ## physics 2

Two charges, -17 and +3.6 µC, are fixed in place and separated by 3.2 m. (a) At what spot along a line through the charges is the net electric field zero? Locate this spot relative to the positive charge. (Hint: The spot does not necessarily lie between

95. ## physics 2

An electric field of 264,000 N/C points due west at a certain spot. What are the magnitude and direction of the force that acts on a charge of -6.3 µC at this spot?

96. ## Physics

A grindstone of radius 4.0m is initially spinning with an angular speed of 8.0 rad/s. The angular speed is then increased to 12 rad/s over 4.0s. Assume that the angular acceleration is constant. What is the average angular speed of grindstone?

97. ## Physics

The earth has a radius of 6.38 106 m and turns on its axis once every 23.9 h. A. What is the tangential speed (in m/s) of a person living in Ecuador, a country that lies on the equator? (b) At what latitude (i.e., the angle θ in the drawing) is the

98. ## physics

A block with a mass of 0.5kg is pushed against a horizontal spring of negligible mass and spring constant 450 N/m until the spring is compressed a distance x. When it is released, the block travels along a frictionless, horizontal surface to the bottom of

99. ## Physics

A pitcher throws a 0.140-kg baseball, and it approaches the bat at a speed of 45.0 m/s. The bat does Wnc = 65.0 J of work on the ball in hitting it. Ignoring air resistance, determine the speed of the ball after the ball leaves the bat and is 25.0 m above