# jordan

Popular questions and responses by jordan
1. ## physics

You throw a baseball directly upward at time t = 0 at an initial speed of 13.3 m/s. What is the maximum height the ball reaches above where it leaves your hand? At what times does the ball pass through half the maximum height? Ignore air resistance and

2. ## chemistry

Quantum numbers arise naturally from the mathematics used to describe the possible states of an electron in an atom. The four quantum numbers, the principal quantum number (n), the angular momentum quantum number (ℓ), the magnetic quantum number (mℓ),

3. ## physics

While standing at the edge of the roof of a building, you throw a stone upward with an initial speed of 7.65 m/s. The stone subsequently falls to the ground, which is 11.1 m below the point where the stone leaves your hand. At what speed does the stone

4. ## science

An orange is placed on a table in a completely dark room, without any source of light. Which of the following choices correctly describes what an observer will see as he looks in the direction of the orange? A) The orange will not be seen at all because

5. ## Physics

The pressure and volume of an ideal monatomic gas change from A to B to C, as the drawing shows. The curved line between A and C is an isotherm. IMAGE:wvw.webassign.n3t/cj8/15-p-031.gif a)Determine the total heat for the process in joules. b)State whether

6. ## Physics

A shot-putter throws the shot (mass = 7.3kg) with an initial speed of 15.0 m/s at a 33.0 degree angle to the horizontal. Calculate the horizontal distance traveled by the shot if it leaves the athlete's hand at a height of 2.00m above the ground.

7. ## physics

An unsuspecting bird is coasting along in an easterly direction at 4.00 mph when a strong wind from the south imparts a constant acceleration of 0.300 m/s2. If the acceleration from the wind lasts for 2.70 s, find the magnitude, r, and direction, θ, of

8. ## Chemistry

Which of the following compounds contains both ionic and covalent bonds? SiO2 LiCN LiI PCl3

9. ## chemistry

Which neutral atoms have the following electron configurations in either a ground state or excited state? Enter the name or symbol. [Ar]4s23d3 - I know that this is Vanadium [Xe]6s24f1 - I thought that this was Lu but it counts it wrong each time! Help

10. ## Chemistry

At 25 °C, an aqueous solution has an equilibrium concentration of 0.00147 M for a generic cation, A (aq), and 0.000735 M for a generic anion, B2–(aq). What is the equilibrium constant, Ksp, of the generic salt A2B(s)?

11. ## differential calculus

a man 6 ft tall is walking toward a building at the rate of 4 ft/sec. if there is a light on the ground 40 ft from the building, how fast is the man's shadow on the building growing shorter when he is 30 ft from the building?

12. ## geometry

Ray BD bisects ∠ABC so that m∠DBC = (x + 6)° and m∠ABD = (2x – 12)°. What is x?

13. ## Chemistry

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

14. ## Chemistry.

Calculate the mass of CaCO3 that would produce 40 mL at STP. STP means P= 1 atm and T= 0 degrees C. How do I find the mass?

15. ## AP GOVT

The 25th amendment describes the sequence of events that would install the vice president as acting president against the will of the president. Outline that sequence of events.

16. ## chemstry

How long will it take 200 mg of carbon-14 to decay to the point where only 75 mg remain if the half-life is 5770 years?

17. ## Geometry Help!!!

. Katrina lives directly east of the park. The football field is directly south of the park. The library sits on the line formed between Katrina’s home and the football field at the exact point where an altitude to the right triangle formed by her home,

18. ## physics

The drawing shows a version of the loop-the-loop trick for a small car. If the car is given an initial speed of 4.5 m/s, what is the largest value that the radius r can have if the car is to remain in contact with the circular track at all times?

19. ## Math

What are the coefficients in the polynomial 4x^2+3x-3? I'm not posting this to get the exact answer, I just need help on finding the coefficients. I'm not real good with polynomials, and I've been struggling a little. I just need explaining on how to find

20. ## math

A student takes a multiple choice quiz with 12 questions and 5 alternatives per question. Unfortunately, this student has no idea what any of the answers are, so he randomly selects an alternative for each question on the exam. Using this “blind

21. ## Pre-Calculus

A parabolic satellite television antenna has a diameter of 16 feet and is 2 foot deep. How far is the focus from the vertex? is the answer 8ft?

22. ## Physics

A uniform rod of weight 5N and length 1m is pivoted at the 20cm mark from one end. A weight is hung from the other end so that the rod balances horizontally. What is the value of the weight?

23. ## Physics

Which of the following is correct for the reflected ray if a light ray strikes a plane mirror at an angle of 50° from the normal? a. 40° from the surface of the mirror b. 40° from the normal c. 50° from the surface of the mirror d. 90° from the normal

24. ## Chemistry

A compound is found to contain 50.05 % sulfur and 49.95 % oxygen by mass. What is the simplest (empirical) formula for this compound? They said to assume that it is 100 grams. I found the molar mass. S- 32.06 0-16.00 But now I don't know what to do. Please

25. ## Math

if 4/3 x 3/4 =5k whats k

26. ## math

the gas tank of a car is 2/3 full. a trip uses up 1/4 of the gas in the tank. how full is the tank at the end of the trip? please include how you got the answer, thanks

27. ## Math

Janna is using a cone-shaped cup to fill a cylindrical container. The cup has the same height and radius as the container. How many times will she have to fill the cylindrical container? A. 1/3 B. 1 C. 2 D. 3 It didn't show the numbers for the radius or

28. ## Physics

Five moles of an ideal gas are compressed isothermally from A to B, What is the work involved if the temperature of the gas is 332 K? Be sure to include the correct algebraic sign. GRAPH: wvw.webassign.n3t/cj8/15-fc-009.gif wvw and n3t need to be retyped

29. ## American History

I have been assigned a paragraph to "decode" of the Declaration of Independence. I am supposed to write it to make it so that it is easily understood and read-able. I'm having a hard time with it though, because I don't know what the actual words mean. It

30. ## math

Two sides of a triangle measure 25 cm and 35 cm.Which could be the third side.

31. ## sinusoidal functions

State an equation of a sinusoidal graph with the following properties. The central axis is at y = 5 Two consecutive minimums are found at (3, −1) and (13, −1 find values for a,b,c and d

32. ## geometry

Point A is the incenter of (triangle) PQR. Find each measure. ARU AU QPK

33. ## Physics

A baseball is popped straight up into the air and has a hang-time of 6.25 s. Determine the height to which the ball rises before it reaches its peak.

34. ## economics

4. Engineers for the Off Road Skateboard Company have determined that a 10% increase in all inputs will cause output to increase by 5%. Assuming that input prices remain constant, you correctly deduce that such a change will cause ________ as output

35. ## physics

A cannon is mounted on a tower above a wide, level field. The barrel of the cannon is 20 m above the ground below. A cannonball is fired horizontally with an initial speed of 900 m/s. Assuming air resistance can be neglected, approximately how long will

36. ## math

A room is 12 feet long and 10.5 feet wide. A scale model of the room is 3.5 feet wide. What is the area of the scale model? 10.3 square feet 14 square feet 36 square feet 122.5 square feet

37. ## math

Juan and rachel have the same number of marbles. Rachel gives away 10 marbles and Juan gives away 22 marbles. Rachel then has 3 times as many marbles as Juan. How many marbles did each of them have at first

38. ## CHM

Calculate the percent ionization of hydrazoic acid (HN3) in solutions of each of the following concentrations A) 0.377 M B) 0.107 M C) 4.16*10^-2 M Ka= 1.9*10^-5

39. ## Chemistry

how many grams of aluminum sulfate are produced if 23.33 g Al reacts with 74.44 G CuSO4

40. ## Physics

A shell is fired with velocity having horizontal and vertical components ux, uy. At the highest point of it's path the shell explodes into two fragments of mass m1, m2, which separate in a horizontal direction. The explosion generates kinetic energy E.

41. ## physics

A car starts from rest on a curve with a radius of 120m and accelerates at 1.0m/s^2. Through what angle will the car have traveled when the magnitude of its total acceleration is 2.0 m/s^2?

42. ## Math

Write y = -2/3x -4 in standard form using integers. 2x + 3y = -12 2x + 3y = -4 -2x +3y = -12 2x + 3y = 12 I just need to know the steps for the most part, I don't get them.

43. ## English Help!

What is one of Carmody's main motives in this scene?

44. ## structural grammar

Identify: May I go to the library?

45. ## math

what is the postulate for this 2(x + 3) = 2x + 6

46. ## physics

On the Moon, the acceleration due to gravity is 1.62 m/s^2. How far would a 19 g rock fall from rest in 6.5 seconds if the only force acting on it was the gravitational force due to the Moon?

47. ## calculus

A spherical balloon is leaking air at 2 cubic inches per hour. How fast is the balloon's radius changing when the radius is 2 inches.

48. ## Math

An access ramp enters a building 1 meter above ground level and starts 4 meters from the building. How long is the ramp? If it is not possible, write “not possible” and explain why it is not possible.

49. ## Chemistry

An atom it ground state contains 18 electrons. How many of these electrons are in orbitals with l=0? a.4 b.2 c.8 d.6

50. ## dynamath

the value of 2 coins is 35 cents. one of the coins is not a quarter. what are the 2 coins

51. ## Math

The standard form of a linear equation is Ax + By=c. If b=0 and A and c are positive which best describes the graph of this equation?

1. What was one impact of the Iranian Revolution on the United States? a. Higher oil prices*** b. Increased terrorisim c. Increased taxes d. Increased military spending

53. ## History

How were natural disasters linked with the Mandate of Heaven?

54. ## Math

Determine the range of each function a)f(x)=(x^2+3)^2,XER Answer is f(x)ER, f(x)>9 b)f(x)=1/3+x^4,XER Answer is f(x)ER, 0

55. ## Chemistry

Mass of evaporating dish = 41.36 g Volume of saturated NaCl solution = 10.0 mL Mass of evaporating dish and NaCl = 44.50 g Mass of sodium hydrogen carbonate = 0.49g What is the morality(M) of the sodium chloride solution if you prepare in 1 liter of

56. ## geometry

Which of the following are measurements of the sides of a right triangle? Select one of the options below as your answer: A. 3, 4, 5 B. 28, 26, 12 C. 17, 14, 6 D. all of the above

57. ## ENGLISH

In which of the following sentences is the semicolon used correctly? A. There were five items on the kitchen counter; a coffeemaker, a bag of beans, agrinder, a sugar bowl, and a cracked cup. B. At first Icouldn't make out what kind of bird it was,but as I

58. ## math

a set of 20 cards is numbered 1,2,3,... ..20. Suppose you pick a card at random without looking. Find the probability of each event. Write as a fraction in simplest form. P(3 or 13)

59. ## algebra1

10x10x10x10x10x10x10x10x10x10-10x10

60. ## Chemistry

Calculate the value of Keq for the following equation. Heat + N2(g) + 3H2(g) ↔ 2NH3(g) [N2] = .533M [H2] = 1.600M [NH3] = 0.933M Bob if you're here, can you tell me if adding a substance like "Heat" to the equation changes the whole problem? Or does it

61. ## Chemistry

Write the equilibrium expression for each of the following reactions: N2 (g) + 3 H2 (g) ↔ 2 NH3 (g) + heat Please guide me and help!

62. ## math

A cyclist rides her bike at a speed of 21 km/h what is the speed in kilometers per minute how many kilometers in a cyclist travel in 10 minutes do not round your answers

63. ## Geography

Which hemisphere is responsible for most of the world's research and development? Northern Hemisphere or Southern Hemisphere. I've been reading over a site our teacher gave us, but I can't seem to find this.

64. ## Math1

Bacteria can multiply at alarming rate when each bacteria splits into two new cells , thus doubling. If we start with only one bacteria which can double every hour , how many bacteria will have by the end of one day?

65. ## Chemistry

What is the equilibrium constant in the following reaction [C][O2]/[CO2] [CO2]/[C][O2] [C]^2[O2]^2/[CO2]^2 [CO2]^2/[C]^2[O2]^2

66. ## Chemistry

Consider the reaction N2(g)+3H22NH3(g). What is the effect of decreasing the volume on the contained gases The reaction shifts toward the product gas The system reacts by increasing the number of gas molecules*** the pressure on the gases decreases

67. ## History

Two methods used to control annual floods were ______________

68. ## English help

Question 1 Marks: 1 A common theme that runs through all the sections of Song of Myself is Whitman's own — Choose one answer. a. belief in his power as a poet b. love of solitude c. inability to trust people d. failure to change the world Question 2

69. ## Huck Fin

"Two or three days and nights went by; I reckon I might say they swum by, they slide along so quiet and smooth and lovely. Here is the way we put in the time. It was a monstrous big river down there—sometimes a mile and a half wide; we run nights, and

70. ## Huck fin

If you have read Huckleberry Finn before, what was your initial reaction to it?

71. ## Math (Calculus)

A tank has the shape of an inverted circular cone with a base radius of 5 meters and a height of 20 meters. If water is being pumped into the tank at 2 cubic meters per minute, find the rate at which the water level is rising when the water is 7 meters

72. ## math (Caluclas)

A spherical ballon is leaking air at 2 cubic inches per hour.l How fast is the ballons radisu chancing when the radisu si 3 inches.

73. ## Physics

A 5 kg ball is initially at rest at the top of a hill 10m high. If it rolls down the hill (converting all of its potential energy to kinetic energy,) what is the maximum kinetic energy it could have at the bottom of the hill? -I am not sure what formula to

74. ## math

B is the midpoint of segment AC. AB = 5x and BC = 3x + 4. Find AB, BC and AC.

75. ## math 10

how do i work out the answer to: "how many integer values are there for k for which 4x^2 + kxy - 9y^2 is factorable?"

76. ## math

what fraction strips would you use yto find the sum of 3/8 and 4/8? explain

77. ## Chemistry

Use a combustion reaction of liquid ethanol in air as a source of work, assuming temperature is 25 deg C, air pressure is 1atm and all products are gases with partial pressures of 10atm each. How high can one lift a 1000kg weight by burning 100g of

78. ## physics

An electric drill starts from rest and rotates with a constant angular acceleration. After the drill has rotated through a certain angle, the magnitude of the centripetal acceleration of a point on the drill is twice the magnitude of the tangential

79. ## chemistry

a mixture of 3 gases a, b and c is at a total pressure of 6.11 atm the partial pressure of gas a is 1.68 atm, that of gas b is 3.89 atm. what is the partial pressure of gas c?

80. ## BIOLOGY

1.Three fatty acids form a triglyceride with one glycerol. What similarities would the fatty acids have with polysaccharides? What differences? 2. When you consume more food than you require, the mitochondria in the liver are involved n forming

81. ## Chemistry

A 20.29 g sample of impure MgCO3 is completely decomposed at 1000oC in previously evacuated 2.0 L reaction vessel. After the reaction was complete the solid residue had a mass of 15.9 g. Assume that only MgCO3 could produce gas CO2 what percent of original

82. ## math(geometry)

find a counterexample for the following statement. If a number is divisible by 5, then it is divisible by 10. What is the counterexample of that statement?

83. ## Algerba

would you expect a positive, a negative, or no association between the number of hours of daylight during a day and the number of hours of darkeness?

84. ## Physics

1.Which class lever will never give you a mechanical advantage? 2.Which class lever will always give you a mechanical advantage? 3.List the 3 things that are required to do work. Please help My answer: 1. Class 1? 2. Class 2? 3. I don't know.

85. ## Physics

1.Which class lever will never give you a mechanical advantage? 2.Which class lever will always give you a mechanical advantage? 3.List the 3 things that are required to do work. Please help My answer: 1. Class 1? 2. Class 2? 3. I don't know.

86. ## Chemistry

The Ksp of PbI2 is 8.73 × 10-9. Find the solubility of PbI2 in M Please guide me , the I C E table still confuses me, please help me!!

2x^3-1=53

88. ## Math

Carson drew a line perpendicular to the x axis through (7,3) which option shows its equation and slope

89. ## Algebra

Two negative integers have a sum of -10 and a product of 24. Find the two integers.

90. ## World History

How did Asoka foster peace during his reign? Select all that apply. -He posted his laws in public on stone pillars. -He made everyone observe Buddhist practices. -He fought wars of conquest throughout his rule. He built rest houses and set up hospitals.

91. ## Social Studies

Which of the following were the cost of mining? Choose all that apply. A. Streams that were polluted and forests cut down B. permanent settlements began C. foreign miners were treated unfairly D. lawlessness and disorder were rampant I kinda don't really

92. ## Math

Jennifer got a box of chocolates. The box is a right triangular prism shaped box. It is 7 inches long, and the triangular base measures 2 inches x 3 inches x 4 inches. What is the surface area of the box of chocolates?

93. ## Science

Scientists have discovered a new virus that is very different from any known viruses. What type of matter is the virus most likely made of? A)combination of protons and some atoms that have not been discovered so far. B)Combination of protons of differnt

94. ## Math

1: Goldbach's Conjecture is a famous conjecture that has never been proven true or false. The conjecture states that every even number, except 2, can be written as the sum of two prime numbers. For example, 16 can be written as 5+11. 1 a: Write the first

95. ## Math

Thirty six members of the middle school choir or 30% participated in the regional contest as shown in the model below

96. ## Math1

In 1985, there were 285 cell phone subscribers in the same small town of Centerville. The number of subscribers increased by 75% per year after 1985. How many cell phone subscribers were in 1994?

97. ## chemistry

The number of unpaired electrons and the element for [Xe]6s24f145d7: I know the element is Iridium but I cannot figure out the unpaired electrons!

98. ## chemistry

A sample of 45.1 g of methane gas (CH4(g)) has a volume of 6.20 L at a pressure of 2.90 atm. Calculate the temperature. Another one that I'm stumped on, last question for my practice exam, can you explain how to solve?