# Questions Asked onNovember 12, 2017

1. ## Physics 1

A 1400 kg car traveling at a speed of 34 m/s skids to a halt on wet concrete where μk = 0.50. How long are the skid marks?

2. ## Physics

A rope is tied to a box and used to pull the box 1.7 m along a horizontal floor. The rope makes an angle of 30∘ with the horizontal and has a tension of 5 N. The opposing friction force between the box and the floor is 1 N. Part A How much work does

3. ## Maths

A shopkeeper buys an article whose printed is rs 4000 from a wholesaler at a discount of 20% . the rate of sales tax under vat on the article is 8%. If he sells the article to a consumer at the printed price plus tax

4. ## Physic, maths, chemistry, biology

A body of mass 0.1kg is moving on circular path of diameter 1m at the rate of 10 revolution per 31.4sec, then then centripetal force acting on body is A) 0.2N B) 0.4N C)2N D) 4N

5. ## physics

A stone with a mass of 1.0 kg is tied to the end of a light string which keeps it moving in a circle with a constant speed of 4.0 m/s on a perfectly smooth horizontal tabletop. The radius of the path is 0.60 m. How much work does the tension in the string

6. ## Physics

A 4500 kg truck is parked on a 7.0∘ slope. How big is the friction force on the truck?

7. ## PHYSICS

A body accelerates from rest at 0.2m/s for one-fifth of a minute.Calculate the distance covered by the body.

8. ## Physics

A tennis player hits a 58.0 g tennis ball so that it goes straight up and reaches a maximum height of 7.02 m . Part A How much work does gravity do on the ball on the way up? Part B How much work does gravity do on the ball on the way down?

9. ## Physics

The rolling resistance for steel on steel is quite low; the coefficient of rolling friction is typically μr=0.002. Suppose a 180,000 kg locomotive is rolling at 19 m/s on level rails. A) If the engineer disengages the engine, how much time will it take

10. ## Maths

A shopkeeper buys an article whose printed is rs 4000 from a wholesaler at a discount of 20% . the rate of sales tax under vat on the article is 8%.

11. ## Chemistry

calculate the percent deviation from ideal behavior: 1.30 mol N2 in a 2.64-L container at 59 °C exerts 27 bar pressure.

12. ## physics

A 1000 kg car traveling is at 40.0 m/ s. To avoid hitting a second car the driver slams on his brakes. The brakes provide a constant friction force of 8000 N. ( a) Find the minimum distance that the brakes should be applied in order to avoid a collision

13. ## Math

Every exponential function is strictly increasing. True or false? Explain

14. ## Algebra 2

Can someone check my answers? 1. Convert 13pi/30 to degree measure. 78° 2. Find the distance between (4,4) and (8,7). 5 3. What is the vertex of the parabola y = (x + 8)^2 - 2? (-8,-2) 4. The graph of y = 6(x - 8)^2 + 1 open downward. False. 5. An angle

15. ## Physics

The molecular bonds of diatomic molecules can be modeled as springs. The spring constant, k, for a HCl molecule is known to be 480 N/m. If the reduced mass of the molecule is 1.626×10-27 kg, what is the frequency at which the atoms in this molecule

16. ## Algebra I

Average height of a species of tree (in feet) after a certain number of years Years----------Height 1 ------------- 2.1 2 ------------- 3.2 3 ------------- 6.8 4 ------------- 7.3 5 ------------- 11.2 6 ------------- 12.6 7 ------------- 13.4 8

17. ## Math

The equation 24x^2+25x-47/ax-2= −8x−3− 53/ax-2 is true for all values of x ≠ 2/a, where a is constant. What is the value of a ?

18. ## Chemistry

If one 5 mL dose of Milk of Magnesia contains 400 mg of magnesium hydroxide, calculate the concentration of magnesium hydroxide in mol/L.

19. ## Math

One angle of a parallelogram measures 80degree. Find the measure of each of it's remaining angles.

20. ## Chemistry

How many stereoisomers does [Pt Br4 Cl2]2- have? I think it has 2 geo., but how many optical?

21. ## Physics

A blue ball travelling at 2m/s collides with a red ball at rest on a table. After they collide, both balls move in the same direction. Both balls have the same mass. If the blue ball continues to move with a reduced velocity of 0.2m/s, what is the velocity

22. ## maths

find the sum of the first 12th terms of the sequence 8, 5, 2 ......

23. ## Maths / physics

A blue ball travelling at 2m/!@#\$%^&s a red ball at rest on a table. after they collide both balls move in the same direction. Both balls have the same mass. The blue ball continues to move with a reduced velocity of 0.2m/s what is the velocity of the red

24. ## Physics

A wild horse starts from rest and runs

25. ## Chemistry

How many stereoisomers does [Pt Br4 Cl2]2- have? I think it has 2 geo., but how many optical?

26. ## geometry

For which value of x is triangle RST congruent to triangle UVW?

27. ## English

1. Is it OK to tell a lie to make a person happy? --------------------------- In this sentence, what is 'a person'? 1. one person 2. a certain person 3. any person

28. ## English

The oppoiste of lucky is unlucky. 1. What is the opposite of luck? Is it unluck or bad/ill luck? Don't you use 'unluck'? 2. What about luck or luckiliss? Are both okay?

29. ## English

1. He lay on the floor. 2. He was lying on the floor. [Are both okay? Which one is commonly used?] 3. He laid the box on the table. 4. He put the box on the table. [Are both the same?] 5. He lied to her. 6. He told a lie to her. [Ar both grammatical?]

30. ## Math

What is 2/10+13/100=

2/10+13/100

32. ## Chemistry

A 0.8870-g mixture of sodium chloride and potassium chloride is dissolved in water and silver nitrate is added. The AgCl that precipitates has a mass of 1.913 g. Calculate the percent by mass of potassium in the initial mixture。

33. ## Chemistry

Hello this is my first experiment I've ever done before and it was fun but I gotta figure out what NaCl produced and what it yielded in percentage. Can someone double check my work. Na2CO3+2HCl=2NaCl+H2O+CO2 Mass of empty crucible & cover: 33.076g Mass of

34. ## Math

Find the retail price of this item below Original Price: \$65.00; Markdown: 12% How do u do this?

35. ## Algebra HELP

How are the median and upper and lower quartiles the same? How are they different?

36. ## Algebra HELP

What does the interquartile range tell you?

37. ## math

√ x+10 +√ x-17=9

38. ## Physics

Suppose that a comet that was seen in 545 A.D. by Chinese astronomers was spotted again in year 1937. Assume the time between observations is the period of the comet and take its eccentricity as 0.11. What are (a) the semimajor axis of the comet's orbit

1. Name 3 insoluable compounds, each with a different anion 2. Name 3 strong acids, only 1 can be from group 17 3. Name 3 strong bases, all from different groups

40. ## science

A uniform force of 30N acts on a mass 2.5kg initially at rest for 5seconds then it withdrawn and a retarding force F now acted on the mass in the direction of the motion to reduce its velocity to 12 m/s.( calculate the momentum of mass before the retarding

41. ## Ed tech

Which of the following questions will most likely be answered by displaying data on a bar graph? A. Which bank account earned interest the fastest last year? B. Which ice cream flavor do the most students prefer? ** C. How many total hours did the class

42. ## chemistry

15. Which of the following (all at STP) will contain the most atoms? (a) 454 L of helium gas (b) 80.00 g of argon gas (c) 454 L of argon gas (d) 80.00 g of helium gas

43. ## Algebra Help!!

Why should you have a box and whiskers plot on the same number line as another if you’re going to compare the graphs?

44. ## Science 9

The energy each organism obtains from another organism? Food or is it chemical energy

45. ## Math

The average height and weight of women varies around the world, but in the United States in 2010, the average adult female height was 63.8 inches (approximately 5 feet 4 inches) and 166.2 pounds, according to the Centers for Disease Control and Prevention.

46. ## Physics

A stubborn 110 kg pig sits down and refuses to move. To drag the pig to the barn, the exasperated farmer ties a rope around the pig and pulls with his maximum force of 800 N. The coefficients of friction between the pig and the ground are μs=0.80 and

47. ## social studies

Which of the following laws would the free-soil party have supported? cottonocracy slave codes wilmot proviso fugitive slave act ms sue i don't want a link

48. ## Algebra

1.what is a polynomial function in standard form with zeros 1,2,-2, and -3 A. X^4+2x^3+7^2-8x+12 B. X^4+2x^3-7^2-8x+12 C. X^4+2x^3-7^2+8x+12 D. X^4+2x^3+7^2+8x+12 I’m guessing B but I’m honestly not sure on what I’m doing

49. ## Algebra

The pair of points (6, y) and (10, -1) lie on a line with slope 1/4. What is the value of y? A. -5 B. -2 C. 2 D. 5 I think its C but Im not sure, help?

50. ## Maths

The denominator of a fraction is5 more than the numerator. If the numerator is increased by 18 and the denominator is decreased by 4, the fraction becomes25/8. Find the fraction.

51. ## algebra- can anyone help?

NO ANSWER CHOICES! HELP! Why should you have a box and whiskers plot on the same number line as another if you’re going to compare the graphs?

52. ## Discrete Mathematics

Students at Apollo Elementary School receive ribbons at the end of each year at a school-wide awards ceremony. This year 120 students receive gold stars for perfect attendance, 180 receive certificates for participating in the science fair, and 80 students

53. ## CS/Programming

Hi,I'm an absolute beginner in this field and this may be a dumb idea.But as mind came up with this,I simply doesn't feel like neelcting the idea asking for some advice.So here it is. If I want my phone to play a song when it's fully charged, can I use

54. ## English

1. I was puzzled what to do. 2. I was puzzle what I should do. 3. I was puzzled about what to do. 4. I was puzzle about what I should do. --------------------------------------- Which ones are grammatical?

55. ## Physics

A 1.45 kg book is sliding along a rough horizontal surface. At point A it is moving at 3.25 m/s , and at point B it has slowed to 1.34 m/s . Part A How much work was done on the book between A and B? Part B If -0.750 J of work is done on the book from B to

56. ## Biology-ASAP

In a reaction you use 400 ul of 12mM B-galactosidase. Add 2.3 ml of buffer and 0.3ml of ONPG to a cuvette. what is the final concentration of the cuvette? Answer below to one decimal place.

So I would like to check some of my answers. I really appreciate any help 1. Which of the following atoms or ions is diamagnetic; Cr Br Mn2+ B C4+ - I said C4+ 2. Which of the following atoms or ions is paramagnetic? C4- S^4+ V^4+ Se2- Ge4+I said V^4+

58. ## Social Studies-Land Use

1. Because the Inuit live in an environment that is too cold it grows crops, they rely heavily on ____ and ___instead. a. melting ice, clearing trees b. snow, ice c. irrigation, manufacturing d. hunting, fishing 2. Which of the following is a third-level

59. ## Chem

i need a bit of help finding out how to do this problem. just tell me how and ill take it from there. Q.A compound containing carbon, hydrogen, and Oxygen is found to be 40% carbon and 6.7% hydrogen by mass. the molar mass of this compound is between 115 g

60. ## Ethics and philosophy

I have to write how Martin Luther King is inspirational, must include: 1. Date of birth,childhood, education, job, family. 2. How are they inspirational? What have they done in their life you admire?

61. ## Math

Evelyn drinks 8 glasses of water a day,which is 56 glasses of water a week. How many glasses of water does she drink in a year?(1 year =52 weeks )

62. ## Algebra II

Factor the polynomial X^3 + 8

63. ## Math

2a+b=11 and 4a^2 +b^2=101, what is the value of ab? A 4 B5 C12 D6 E20

64. ## English

1. I was confused by what to do. 2. I was confused at what to do. 3. I was confused over what to do. 4. I was confused about what to do. 5. I was confused what to do. 6. I was puzzled by what to do. 7. I was puzzled at what to do. 8. I was puzzled over

65. ## Science

i need a bit of help finding out how to do this problem. just tell me how and ill take it from there. Q.A compound containing carbon, hydrogen, and Oxygen is found to be 40% carbon and 6.7% hydrogen by mass. the molar mass of this compound is between 115 g

66. ## Chemistry

Can someone help me find the grams of what I produced. This is my first experiment I've ever done before and it was fun. Na2CO3 + 2HCl = 2NaCl + H2O + CO2 Empty crucible is: 33.076g I Started with 0.575 Na2CO3 How do I set this up to find how much NaCl

67. ## Physics 110

A pendulum suspendentfrom the roof of the bus moving along a horizontal track makes an angle of 5* with the vertical. 1. what forces are acting on the the pendulum bob? 2.Determine the acceleration of the bus?

68. ## Math

Jack is four years older than Mark and eight years older than Dave. The product from Mark's and Paul's age is greater by 16 than the product from Jack's and Dave's ages. In this group of 4 children, two of them are twins. Who are the twins? What is the age

69. ## asu prep

solve simultaneous equation 1/2x+2y=16 2x +1/2y=19

70. ## Physics

A wild horse starts from rest and runs

71. ## Math

I am confused on this: Explain how to use a number line to find the opposites of the integers 3 units away from -7. What does it ask you to do here, and which way to you go when it asks you 3 units away from -7?

72. ## French

How would I say "place" in French (like an address)? For example, if I lived on Main Street I would say rue Main. What would you say if you lived somewhere like Forest Place?

73. ## Multi Media

It's dark and cold outside at night, good thing this _______blazes bright.

74. ## Juvenile Justice

What is the maximum sentence a juvenile court can give to a juvenile?

75. ## Algebra 2

How do you find the exact solutions of x^2 -(y - 6)^2 = 36 and y = -x^2?

76. ## maths

The perimeter os this isosceles trapezium is 92cm find the value of x

77. ## teacher

is a teacher a basic or a non basic job.. No I don't mean it literally basic or non basic search up the geographical explanation of it

78. ## math

What is the least common multiple of 864,624 and 819. Can you please show the steps. I know that they are both divisible by 3 but can't find the next lowest prime number to divide them by?

79. ## History

Can someone explain what 'Bleeding Kansas' was? I am doing a project, but can't seem to understand. I do know it was a violent outbreak in Kansas during the Kansas-Nebraska act, but what was the cause?

80. ## Algebra 2

The graph (x + 4)^2 - (y - 8)^2 = 39 is the graph of a(an) _______. Eclipse or hyperbola?

81. ## eNGLISH

HELP-REWORD!!! OF DOES IT SOUND CLEAR? Although I am not part of the LGBTQ community, as an outsider, I personally know someone that this bill would relate to. People not in the LGTQQ community may not understand the political forces that impact people in

82. ## History

Can someone link some websites that explains why the Presidential election of 1848 was significant to the Civil War?

83. ## Check Please !!! Re-written

I am an aspiring human rights advocate attending the University of Baltimore. I am an individual with many social and political concerns. I am invested in this because I believe…that regardless of individual’s sexual multiplicities and social

84. ## Math

Is the magnitude of an earthquake related to depth below the surface at which the quake occurs? Magnitude: 2.9,4.2,3.3,4.5,1.6,3.2,3.4,3.9 Depth:5.0,10.0,11.2,10.0,7.9,3.9,5.5,8.1 Equation: y=4.12+1.06x Question: does it make sense to predict the depth

85. ## English

Compose a sentence that contains a minimum of twenty-one words and a maximum of thirty words.The required main verb of the sentence must be the present progressive verb are planning.You must include the following phrase as a part of the subject:the Puerto

86. ## Math (Area formed by 3D coordinates)

Compute the area of the parallelogram formed by A(-2, 1, 4), B(0, -2, 3) C(-1, 6, 5), and D(1, 3, 4). So for this problem, do I turn the four points into two vectors with AD and BC and then take the cross product and then find the magnitude? Taking the

87. ## English

1. At that moment, he stopped walking. 2. At that moment, he stopped to walk. 3. At that moment, he stopped working to walk. ---------------------------------- Does #2 mean #3?

88. ## Algebra I

you use a line of best fit for a set of data to make a prediction about an unknown value. The correlation coefficient for your data set is -0,993. How confident can you be that your predicted value will be reasonably close to the actual value? a. I can't