# Questions Asked onOctober 1, 2013

1. ## math

The cost of a telephone call is $0.75 +$0.25 times the number of minutes. Write an algebraic expression that models the cost of a telephone call that lasts t minutes. i got C= 0.75 + 0.25t am i correct? pls help if im not :( and show me how u got the

2. ## Physics

Two identical cars (m = 1350 kg) are traveling at the same speed of 28.1 m/s. They are moving in the directions shown in the drawing. What is the magnitude of the total momentum of the two cars?

3. ## math - calc

A conical water tank with vertex down has a radius of 12 feet at the top and is 26 feet high. If water flows into the tank at a rate of 30 {\rm ft}^3{\rm /min}, how fast is the depth of the water increasing when the water is 12 feet deep?

4. ## chemistry

For another picnic, you want to make hamburgers with pickles, again without having any left over. You need to balance the number of packages of buns (which usually contain 8 buns) with the number of packages of hamburger patties (which usually contain 12

5. ## English

The President sent the ambassador an invitation to the meeting. What is the correct sentence pattern?

6. ## physics

The drawing shows a 25.1-kg crate that is initially at rest. Note that the view is one looking down on the top of the crate. Two forces, 1 and 2, are applied to the crate, and it begins to move. The coefficient of kinetic friction between the crate and the

7. ## Math

Sum of 2 consecutive integers is 59. Write an equation that models that situation and find values of both integers

8. ## VNS,Math

In Gulshan the ratio of private homes to apartment is 3:5. If all the apartments are brick made and 1/10 of the private homes are wooden, what is the maximum portion of houses that may be brick?

9. ## Math

What is an algebraic expression for "49 more than q"

10. ## Science- Significant Figures

You calculate the area of a 150m x 100.0 m room. How many significant figures should your answer include? a. 1 b. 2 c. 3 d. 4 2?

11. ## algebra1

the problem is 5f+7 less than or equal to 22. can anyone please work this out for me and check it for me? and what i mean by checking it is like when you get the answer you check it and make sure its write.

12. ## Math

A customer needs 88 ,2 inch pipe connectors to Complete a project. How many Bags of connectors would you recommend the customer purchase if each bag includes 25 connectors

13. ## Algebra maths

The base of rectangle is3cm than twice the height. The perimeter is 60cm find the base and height of a rectangle

14. ## Chemistry

A 0.3146-g sample of a mixture of NaCl(s) and KBr(s) was dissolved in water. The resulting solution required 47.40 mL of 0.08765 M AgNO3(aq) to precipitate the Cl–(aq) and Br–(aq) as AgCl(s) and AgBr(s). Calculate the mass percentage of NaCl(s) in the

15. ## Physics 12

A flag of mass 2.5 kg is supported by a single rope as show in figure 13. a strong horizontal wind exerts a force of 12 N on the flag. Calculate the tension in the rope and the angel, the rope makes with the horizontal. here is the figure:

16. ## Physics

In a phsics experiment, a 1.3 kg dynamics cart is placed on a ramp inclined at 25 degrees to the horizontal. the cart is initially at rest but is then pulled up the ramp with a force sensor. the force sensor exerts a force on the cart parallel to the ramp.

17. ## English

In the following sentence identify the appositive or appositive phrase and the noun or pronoun defined by the appositive. Mr. Murray, the Scoutmaster, likes to hike. Appositive? Noun or pronoun defined?

18. ## social justice

What is the fundamental difference between lifestyle branding and past forms of branding?

19. ## Emily

1.)Dylan has $2.30 and dimes and nickels The number of dimes exceeds the number of Nichols by five find the number he has a each. 2.) A coin purse contained$4.70 in Nickels and quarters there are 30 Coins in all how many of each kind of there. 3.)

20. ## Algebra / geometry

In the box shown at the right, what is th length of the dashed line? There is a picture of a cube with a dashed line going through it diagonally. On top of the box a side is marked 12cm, on the side 8cm, and bottom 9cm.

21. ## Chemistry- moles

How do I determine the number of hydrogen atoms in .0885 mol Tetracarbon decahydrogen?

22. ## Chemistry

For the following reaction KClO4 → KCl + 2O2 Assign oxidation states to each element on each side of the equation. Reactant Product K Cl O Which element is oxidized? Which element is reduced?

23. ## physics

what is the difference between impact distance and horizontal distance?

24. ## English !!!

What could be some flaws of discrimination (black people)?

25. ## English !!!

What could be the flaws of all men are equal to vote?

26. ## Statistics

The soccer team's shirts have arrived in a big box and people start grabbing them. The box contains 7 medium, 12 Large, and 11 extra-large shirts. What is the probability that the first 4 shirts are all extra large? I have been struggling with the problem

33. ## Chemistry

The isotopic abundance of naturally occurring hydrogen is as follows: 1H 99.985 atom % 2H 0.015 atom% When H2 gas is formed from naturally occurring hydrogen, what percentages of the molecules have molecular weights of approximately 2, 3 and 4?

34. ## math

Find the measure of the largest acute angle in a 5-12-13 triangle.

35. ## History

When was the height of Egyptians, Athenians, Alexander's empire, and Roman Empire? I am having hard time finding the exact or round about year to these. I've found two so far, but I am sure if its right. please help so i can study for my test! thank you!

36. ## Math

Length of a rectangle is 5 cm less than twice its width. The perimeter of the rectangle is 26 cm

37. ## Math

21. 1/12- (-7/12)= 2/3 22. 9/20-(-7/20)=4/5 23. 8 9/10-6 1/10= 2 4/5 24. (-8 6/11)-(-2 5/11)= 7 25. (-4 5/8)-3/8= 4 1/4

38. ## Geometry

What is the precision for 72 cm

39. ## chemistry

What equation will you use to calculate the heat of fusion of ice? The specific heat of water is 4.184 J/(gx°C), and the heat capacity of your calorimeter is 1.0x10^1 J/°C.

40. ## Math help!

1.(g + 4) - 3g = 1 + g 1 4 No solution Identity 2. 5y + 2 = 1/2(10y + 4) 5 10 No solution Identity 3. 0.5b + 4 = 2(b + 2) 0 0.5 No solution Identity 4. -3x + 5 = -3x + 10 5/6 -5/6 No solution Identity My answers: 1. 1 2. Identity 3. 0 ??? Not sure 4. No

41. ## C/J

Which of the following is sometimes held to be the only event for which there is no cause? a.freewill b.emotions c.viruses d. moral character Is it free will not sure

42. ## Physics

A car makes a 288 km trip at an average speed of 31.3 km/h. A second car starting 1 h later arrives at their mutual destination at the same time. What was the average speed of the second car for the period that it was in motion? Answer in units of km/h

43. ## Chemistry (balancing eq)

I need to write a formula where PbNa reacts with water. 2PbNa + 2 H20 = 2 NaOh + H2 +Pb It says in the question that lead doesn't react with water, but Na does. Did I write the formula correctly?

44. ## physics

Kim is in a boat traveling 3.8 m/s straight across a river 240 m wide. The river is flowing at 1.6 m/s. What is Kim's resultant velocity?

45. ## aLGEBRA 2 help please would appreciate

X over X+3 subtract X over X-3 = X^2 + 9 over X^2 -9 solve for x. show all work thank you

47. ## physics

After 10.3 s, a jogger’s displacement is 360 m. What is the average velocity in m/s? Answer in units of m/s part 2 What is the average velocity in km/h? Answer in units of km/h

48. ## Algebra (Steve!)

In the box shown at the right, what is th length of the dashed line? There is a picture of a cube with a dashed line going through it diagonally. On top of the box a side is marked 12cm, on the side 8cm, and bottom 9cm.

49. ## physics

A block is at rest on the incline shown in the figure. The coefficients of static and ki- netic friction are μs = 0.45 and μk = 0.38, respectively. The acceleration of gravity is 9.8 m/s2 . What is the frictional force acting on the 25 kg mass? Answer in

50. ## Algebra Maths

A local company is hiring trainees with less than 1 year of experience and managers with 5 or more years of experience. Solve the inequality and graph the solutions?

51. ## Physics

A football is kicked off with an initial speed of 63 ft/s at a projection angle of 45 degrees. A receiver on the goal line 67 yd away in the direction of the kick starts running to meet the ball at that instant. What must be his minimum speed (in

52. ## Chemisry

The amount of I3–(aq) in a solution can be determined by titration with a solution containing a known concentration of S2O32–(aq) (thiosulfate ion). The determination is based on the net ionic equation Given that it requires 32.9 mL of 0.330 M

53. ## math

Paul an Peter each toss a coin and record the results. Paul: H H T H T H H H T T H H T H T H T H H T T Peter: H T H H T H H T T H T H ... ... If the probability of heads to tails was the same for both boys, what were peter's last two tosses?

54. ## math

n!/n(n-1) is equivalent to? a) (n-2)! b) n-1 c) 1 d) 1/n-1

55. ## physics

If a woman lifts a 16.2 kg bucket from a well and does 6.33 kJ of work, how deep is the well? Assume that the speed of the bucket remains constant as it is lifted.

56. ## Math with mixed numbers

4. 2 1/6+8 3/6= 10 2/3 5. -2 4/5+(-2/5)= 3 1/5 6. 3 3/8+6 5/8=10

57. ## Physics

Note: The left-hand mass is equal to the sum of the other two masses. A massless pulley is attached to the ceiling,in a uniform gravitational field, and rotates with no friction about its pivot. Another massless pulley is attached to the end of the cord on

58. ## Algebra 1

23=2x+(x+3)+x I know the answer is 5 but I don't know how to show the work.

59. ## Physics

A block of mass 2.30 kg is pushed 2.38 m along a frictionless horizontal table by a constant 16.0 N force directed 26.9o below the horizontal. Determine the work done by the applied force. Determine the magnitude of the normal force exerted by the table.

60. ## Math

Not good with estimate here the question 24678 divided by 83

61. ## algebra

A video store charges a monthly fee of 7.50, but the charge to rent each movie is only 1.00 per movie. Another store has no membership fee, but it costs 2.50 to rent each movie. How many movies need to be rented each month for the total fees to be the same

62. ## Physics

A 0.568 kg particle has a speed of 1.57 m/s at point A and kinetic energy of 7.67 J at point B. What is its kinetic energy at A? What is its speed at point B? What is the total work done on the particle as it moves from A to B?

63. ## Pre-Calculas 11

a farmer wants to build two pens (one for cows, the other for horses) on land by a straight road. There is already a fence along the road and the farmer has 800m of fencing to build his fence to enclose the pens and separate them as shown in the diagram

65. ## Chemistry

A tubular fluorescent lamp in a fully evacuated supply compartment on the international space station was originally filled with a small amount of mercury vapour. When the lamp began to flicker the astronauts complained there was a tiny hole in the tube.

66. ## Precalc

a weight on a vertical spring is given an initial downward velocity of 4cm/sec from a point 6 cm equilibrium. Assuming that the constant w has a value of 4, find the location of the weight 1 sec after it is set in motion.

67. ## math

In how many ways can 5 books be arranged on a shelf If 2 of the books are identical?

68. ## Algebra/geometry

Find te equation in slope-intercept form of the line that is the perpendicular bisector of the segment between (-3,4) and (3,-8).

69. ## Chemistry

Determine the molecular formula of phosphorus. phosphorus gas has a density of 0.617 g/L at 70 and 200 Celsius ...

70. ## physics

The left-hand cable has a tension T1 and makes an angle of 50 degree with the horizontal. The right-hand cable has a tension T3 and makes an angle of 43 degree with the horizontal. A W1 weight is on the left and a W2 weight is on the right. The cable

71. ## Early childhood Ed

V in vark means

72. ## MATH

The quadratic equation x2 + mx + q = 0, where m and q are real numbers, has the complex root a + bi. Which of the following must be equal to m?

73. ## Math

6. 3 3/8+6 5/8=10 7. 11/14-3/14= 8/14 8. (-1/8)-5/8=-3/4 9. 4/12-10/12=-1/2

74. ## Astronomy

Each time period corresponds with an event in the list below labeled a to e. Starting with the earliest time period (10^−34 s), list which time period corresponds to which event. For example if you think the times at 10^−34 s, 10^−12 s, 10^−10 s, 3

75. ## Astronomy

Why didn’t the Universe collapse into a black hole in the past when there was so much matter in such a small space? (a) Most of the particles in the early Universe were unstable and decayed before a black hole could form. By the time only stable

76. ## Math

Celsius to farenhet Find Celsius when it's -4 Fahrenheit

59+20=

78. ## Astronomy

Where did CMB radiation originate? (a) It is the radiation from the electroweak phase transition when the weak force was spon- taneously broken by the Higgs mechanism. (b) It is radiation from supernovas in the early Universe that produced the heavier

79. ## Physics

You are holding a bulletin board weighing 7.01 N in place against a wall while your friend secures it to the wall. To keep it from slipping, you apply a force perpendicular to the bulletin board, pressing it directly into the wall. How large must this

80. ## Astronomy

How do we image dark matter? (a) We see light from galaxies behind the bullet cluster that is bent (gravitationally lensed) due to the matter (regular and dark) in the bullet cluster. (b) We see light from the gas in the two bullet cluster galaxies and we

81. ## physics

A block of mass m1 = 13.5 kg rests on a wedge of angle θ = 27∘ placed over a table.. An inextensible string is attached to Block M1, passes over a frictionless pulley at the top of the wedge, and is then attached to another block of mass M2 = 3 kg. The

82. ## physics

For circular motion in the vertical plane, what is the centripital acceleration at the bottom of the circle? What is the magnitude of the centripetal acceleration at the top of the trajectory ? express your ans. in terms of g, M and T, where is T is

83. ## Astronomy

Now imagine you’re an astronomer on Earth looking at the spectrum of an object in space. In the spectrum you are looking for the so-called Lyman- alpha line of hydrogen which occurs at a wavelength of  = 122 nm. In your telescope, you observe the Lyman-

84. ## Astronomy

Which of the below statements about the CMB are true? (i) The “hot” and “cold” spots are areas where photons have slightly more or less energy than average. (ii) It shows that the Universe was accelerating at the time the CMB formed, thus measuring

85. ## Astronomy

What were the relative energy densities in the early Universe? (below, DE means dark energy) (a) They remain roughly equal: rad ∼ mat ∼ DE (b) DE > mat > rad (c) rad > mat > DE (d) mat > rad > DE

86. ## physics

A block of mass m = 14 kg is pressed with a horizontal force F against a frictionless ramp of angle θ = 78∘. What is the magnitude of the normal force exerted by the incline surface on the block?

87. ## Astronomy

The Universe is filled with a frozen in Higgs condensate. If this were to suddenly disappear/evaporate, what would happen? (a) All bound matter—nucleons (made of quarks), nuclei (made of nucleons), atoms (made of nuclei and electrons), people (made of

88. ## Astronomy

What percentage of the energy budget do electrons occupy? Take the energy budget occupied by matter to be 4.4%. (a) 3.9% (b) 0.1% (c) 0.03% (d) 0.002%

89. ## Math

There are X number of people living in a house.three less than four times the number of people is forty one .how many people lives in the house?

90. ## Astronomy

How the asymmetry between matter and anti-matter in our Universe might be generated. Why might neutrinos be a key player in achieving this? (a) We already know neutrinos can morph from one neutrino type to another. It is possible, although not certain,

91. ## Math

Twice the sum of a number and 4 is equal to 22. What is the number?

92. ## ALGEBRA 2 help please would appreciate

x x _____ - _____ = x^2+9 ________ x+3 x-3 X^2-9 solve for x. and check answer thank you show work please

93. ## Math

Fahrenheit is -4 what is Celsius

94. ## maths

When the function f(x) is equal to 2xn + ax2 - 6 is divided by (x-1), the reminder is -7 and when divided by (x+3), the reminder is 129. Calculate the value of "a" and "n" and hence write the polynomial function completely.

95. ## Math

There are X number of leaves on a fig branch .two more than 0.25x is six.how many leaves are on the fig branch?

96. ## History

Which group is most associated with the fall of the Western Roman empire? Was it Carthaginians, Gauls, Huns, or the Greeks?? I thought it was Egypt or Visigoths but my answer came back as wrong :(

97. ## Chemistry

according to the balanced chemical equation 2SO2

98. ## Math

Solve for area of a trapezoid A= h(b1+b2) 2 Solve for b1

99. ## aLGEBRA 2 help please would appreciate

X over X+3 subtract X over X-3 = X^2 + 9 over X^2 -9 solve for x. show all work thank you

100. ## US History

What political influences shaped the governments of the British Colonies

101. ## world geography

Imagine you are an elected official with the responsibility of drafting legislation designed to protect our environment. What items will you include in your bill? Who will be responsible for the bill's implementation? Its enforcement

102. ## Math

1. Yesterday Josh sold some boxes of greeting cards. If he sold 25 boxes in all, how many did he sell yesterday? 2. Jana baked some muffins. After she served 13 of them to her friends at brunch, she had 17 left. How many muffins did she make? 3. A scuba

103. ## maths

can you pls tell the formulas in binomial theorem

104. ## Math

Accentuate the Negative. This is Charlene, Angeliques' Nana. Please show me How I can get to the correct answer. [-80 + 2] = N

105. ## physics

Help please ! been stuck on this for hours. A model rocket blasts off and moves upward with an acceleration of 13m/s^2 until it reaches a height of 25m , at which point its engine shuts off and it continues its flight in free fall. 1) What is the maximum

106. ## Math

Eight more than a number divided by 5

107. ## social justice

what are some of the social and economic consequences globally due to the shift to lifestyle branding?

108. ## Science

How far does any object on Earth fall after being in free fall for 7.5 seconds? Remember g=9.81 m/s2

109. ## algebra

multiply and simplify 7^3 X 7^9

110. ## physics

What would the density of a sphere of radius 1.07 m have to be in order to produce a gravitational acceleration of 1.01 m/s2 at the surface of the sphere?

111. ## math

Gaussian elemination back substitution x+2y+3z=-5 2x+y+z=1 x+y-z=8

112. ## Math

If Anna is 5 ft tall. How tall is she in centimeters and what is the rate?

113. ## social studies

determine the capitol budgeting in global business

114. ## pysics

A dockworker loading crates on a ship finds that a 17-kg crate, initially at rest on a horizontal surface, requires a 71-N horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 57 N is required to keep it moving

115. ## Chemistry

Hi, This is a challenge question for my intro chemistry class and I'd really like to do it. Its in 2 parts. 1. Consider a 2790-lb automobile clocked by law-enforcement radar at a speed of 85.5 mph (miles/hour). If the position of the car is known to within

116. ## Math

A customer needs 88 ,2 inch pipe connectors to Complete a project. How many Bags of connectors would you recommend the customer purchase if each bag includes 25 connectors

117. ## History!

***IGNORE THE CHARTS/GRAPH QUESTIONS!! UNLESS YOU KNOW THE ANSWER OR HAVE SEEN THE CHARTS! THANKS!! :) *** For whom was South Carolina named? (1 point) Queen Caroline King Charles I**** King Charles II Queen Elizabeth 2. What is an important reason to

118. ## Physics

A small airplane has a speech of 200km/h with respect to the air. There is strong wind blowing at 77km/h at 23 north of east with respect to the Earth . A) in which direction should the plane head in order to land at an airport due north of its present

119. ## math

Is 7 the squarre of 49? I know its the square root .But are square and square rooot the same?

120. ## Algebra

Please help! 1) -6x(1-4x) + 5(3x-8) 2) 8(-4+7n) + 6n(2n-7) 3)4(3v+1) - 8v(1-8v) 4)4x(7+5x) - 8(-x - 7)

121. ## Algebra graphs

I had to find the distance between to locations on a graph which I did using the distance formula I got sqrt281 from point a (-6,3) point b (10,9). The problem is each unit is approximately 1/8 of a mile. Now what? Round your answer to the nearest tenth of

Endangered species Group number clams 62 birds 14 more than clams mammals 9 fewer than birds fish 70 insects half as many as fish reptiles 21 fewer than insects snails 10 more than reptiles Write an inequality to compare the number of endangered birds and

123. ## American History

What does the Constitution not list the reserved powers of? The choices are Congress, President, state government, or national government

124. ## Math

I've been having trouble with these four problems. Please help. 1)-8n(6 - 7n) + 2(3n - 8) 2)-3k(-8k - 6) - 5(-8k + 8) 3) -5a(a - 1) - (4a + 8) 4)-4(b - 3) - 8(b - 2)

125. ## algebra

what is the advantage of having a magnetic bulletin board

126. ## Science

An astronaut on a space walk bumps the shuttle and starts moving away at a velocity of 0.02m/s. The astronauts mass is 100kg. He has takes a 1kg "safety week" and shoves it away in exactly the direction of his motion at a speed of 6m/s. What speed does the

127. ## Math

Lindsey has 47 coins in her change purse that are either dimes or quarters. If n represents the number of quarters she has,write an expression in terms of n that describes the number of dimes

128. ## music (Anyone)

who knows 2 same pieces of music but have different performers?

129. ## Math

Write an algebraic expression for "55 more than the product of 134 and n"

130. ## Physics

A particular task exposes the operator to alpha radiation at an average dose of 200 ìGy each time the task is performed. If the company needs the task performed once per day over a 250-day working year and the maximum occupational dose limit is 20mSv per

131. ## Math

What is the square root of 693 divided by the sum of pi and Avagadro's number

132. ## Physics

I am having a bit of trouble with this one. A safety harness is connected to a cable with a report breaking stress of 800MNm-2. What mass could be hung from a harness if the diameter of the cable was 6mm? Any help would be great with the formula

133. ## Physics

A bullet is ﬁred straight up from a gun with a muzzle velocity of 259 m/s. Neglecting air resistance, what will be its displacement after 8.9 s? The acceleration of gravity is 9.8 m/s 2 . Answer in units of m. Please show work

134. ## physics

A cyclist maintains a constant velocity of 7 m/s headed away from point A. At some initial time, the cyclist is 259 m from point A. What will be his displacement from his starting position after 82 s? Answer in units of m

135. ## physics

A player is standing 12 meters to the right of a lamppost. He starts to walk with a constant acceleration of 2 m/s2 towards the lamppost. After 6 seconds, how far will the player be from the lamppost in meters?

136. ## Chemistry-

If I was trying to find out the number of molecules(N) using moles x avogadro's number, what units would N have?

137. ## English

can anybody give me examples of beliefs i have a few but i need more

138. ## physics

A player is standing 12 meters to the right of a lamppost. He starts to walk with a constant acceleration of 2 m/s2 towards the lamppost. After 6 seconds, how far will the player be from the lamppost in meters?

139. ## English

Writeacher,i can't understand these lines!These lines are of julius caeser and it seems very difficult to understand!plz make me clear! Go bid the priest do present sacrifice and bring me their opinions of success,

140. ## us history

Which of the following is true of the Spanish-American War? A. Racial tensions were suspended for the duration of the war. B. About one in ten American soldiers were black. C. Black soldiers referred to black Cubans as "Smoked Spaniards." D. The black

141. ## Developmental Psychology

What is the difference between internal and external validity?

142. ## math

What are The fraction from least to greatest. 1/4, 0.7, 3/5

143. ## physics

What is the self-inductance of an air-core solenoid,1m long and 0.05m in diameter,if it has 1400 turns?(a)5.23mH(b)4.84mH(c)3.63mH(d)2.42mH

145. ## Physics

In a phsics experiment, a 1.3 kg dynamics cart is placed on a ramp inclined at 25 degrees to the horizontal. the cart is initially at rest but is then pulled up the ramp with a force sensor. the force sensor exerts a force on the cart parallel to the ramp.

146. ## math

What are The fraction from least to greatest. 1/4, 0.7, 3/5

147. ## Chemistry

Aluminum carbide, Al2C3 (s), reacts with water to yield aluminum hydroxide, Al(OH)3 (aq), and methane, CH4 (g). Write the equation for the reaction. How many grams of Al4C3 (s) would be needed to prepare 1.000 L of CH4 (g) measured at STP?

148. ## physics

A cyclist maintains a constant velocity of 7 m/s headed away from point A. At some initial time, the cyclist is 259 m from point A. What will be his displacement from his starting position after 82 s? Answer in units of m

149. ## 8th Grade Physical Science

Calculate the density of a sample of gas with a mass of 30 g and volume of 7500 cm3.

150. ## Calc

Two commercial airplanes are flying at an altitude of 40,000 ft along straight-line courses that intersect at right angles. Plane A is approaching the intersection point at a speed of 427 knots (nautical miles per hour; a nautical mile is 2000 yd or 6000

151. ## Calc

Two commercial airplanes are flying at an altitude of 40,000 ft along straight-line courses that intersect at right angles. Plane A is approaching the intersection point at a speed of 427 knots (nautical miles per hour; a nautical mile is 2000 yd or 6000

152. ## worldwide issues

If money wasn't used on electronic warfare how would our lives be different?

153. ## General Physics

A 6 kg flower pot falls from a window ledge 10 meters above the ground. a) What is the Kinetic Energy of the flower pot just as it reaches the ground? b) What is the speed of the flower pot just before it strikes the ground?

154. ## MATH

-1/4 + 3/4 = -1 -4/9 - 1/9 = -1/3 Are my answers correct

155. ## health

what are some mental or emotional problems i can research

156. ## Physics

A 10-kg mass is projected straight up with a speed of 20.0 meter/second. 1. Find the initial kinetic energy of the mass 2. To what height does the mass rise?

157. ## math

Suppose there are 100 rabbits on an island and that the rabbit population can triple every half-year. Write an equation you could use to find the number of rabbits, R, after t, years. Using your equation, determine the amount of rabbits on the island in

158. ## physics

What would the density of a sphere of radius 1.07 m have to be in order to produce a gravitational acceleration of 1.01 m/s2 at the surface of the sphere?

159. ## Algebra

The base of rectangle is 3cm more than twice the height the perimeter is 60cm find the base and height of the rectangle

160. ## math

The probability that Mary will do her math homework is 0.6, that she will go to a movie 0.7 and that she will do neither is .2. What is the probability that she will go to a movie and do her homework?

161. ## Math

A total of 68 awards will be given to the soccer team. Each box holds 8 awards. How many awards are in the partially filled box?

162. ## maths

Find the distance between –1 and 1.

163. ## Math

Suppose you copy the Circe using a size factor of 150% what will be the radius ,diameter ,circumference and the area of the image

164. ## Maths

Two candidates A and B are up for election. A is so popular that the number of votes for B is expected to be less than or equal to 10% of A's votes. If the total number of votes for both candidates is 110 , what is the minimum number of votes we could

165. ## Math

There are 62 students in a football league. How many teams of 6 can they make.

166. ## physics

This is an example question which I have the answer to but can not seem to get the same answer through my workings, any help with the equation would be great. A particular task exposes the operator to alpha radiation at an average dose of 200 ìGy each

167. ## Math

My math homework question stated : Jaske completed a marathon race in 3 hours and 12 minutes. Write Jakes running time as a decimal. Am I correct. Thanks Answer 3.12

168. ## physics

Simpson drives his car with an average veloc- ity of 49.7 km/h to the east. How long will it take him to drive 150 km on a straight highway? Answer in units of h

169. ## math

write each addiction vertically. decide which new groups you will make. then add to see if you were correct. 256+1.273 A new ten? A new hundred? A new thousand?

170. ## Statistics

In an Intro Stats class, 57% of students eat breakfast in the morning and 80% of students floss their teeth. Forty-six percent of students eat breakfast and also floss their teeth. What is the probability that a student from this class flosses his/her

(4-3sqrt2)^2 simplify. Is it 16-9•2sqrt2 (7)2sqrt2 ???

172. ## Physics

How much time would Simpson save by in- creasing his average velocity to 65.8 km/h to the east? Answer in units of min

173. ## math

17000 at 2.5% for 5 year show much inter trust would you have ?

174. ## Health

What is intensity?

175. ## Algebra 1

-31=8-6p-7p Can you show work

176. ## Math

A marching band has 36 members. What arrangement could they use in order to have equal numbers of players in each row?

177. ## Geography (Ms. Sue)

Where are each of these countries (Germany, France, Italy, United Kingdom, and Spain) located, relative to the rest of Europe? What pattern do you notice? I do not know the answer whatsoever.

178. ## Astronomy

Basically the Bohr radius'' for the dark matter is rB=ℏ^2 / GN M m^2 where m is the dark matter mass, M is the total amount of dark matter mass contained inside the gravitational atom'', and ℏ and GN are constants as usual. Taking the dark matter

179. ## geography

what does mexico's city site on top of the aztec city suggest about the location?

180. ## Chemistry

The capacity of the groundwater treatment plant has recently been expanded to receive an additional 50,000 m3/year. As a result, all of the 6 rapid sand filtration are being operated. Assume a peak flow factor of 1.5. If the filtration rate is 5 m/h, what

181. ## Physics

If Joe rides south on his bicycle in a straight line for 29 min with an average speed of 14.8 km/h, how far has he ridden? Answer in units of km

182. ## Chemistry

If the RQ is 6 and the k2t is 4, what is the removal efficiency of (CO2) of the co-current tower aerator. What will be the efficiency if a tower aeration with counter current flow is used instead? what is the efficiency of the co-current tower aerator (%):

Let x,y,z be positive real numbers such that: xyz=945 x(y+1)+y(z+1)+z(x+1)=385. What is the minimum possible value of z+y/2+x/4?

184. ## Chemistry

Currently the removal of CO2 is too low and it has been proposed to change the deep well aeration with a co-current tower aerator. select the advantages of using deep well aeration from the below: Very high O₂ transfer within an exceptionally small space

185. ## maths

1.[x + 3] = 2x + 1 A. 2 B. -4/3 C. 2, -4/3 D. 2, 4/3 2.[2x – 7] = 3 A. 5, 2 B. 5, –2 C. –5, 2 D. –5, –2 can someone explain for me plzzzzz.

186. ## math

Given the set (1,2,3,4,5) how many 3-digit numbers can be formed if the first digit is 5 and no digit is repeated?

187. ## math

The probability of rolling an even number of a die and drawing a red marble from a bag containing 3 red marble and 5 green marbles must be expressed as a reduced fraction of the form a/b what is the value of a and b?

188. ## biochemistry

substrate concentration= 3.5mM (c2) buffer=0.4 ml 10mM PNPP stock= ?ml (V1) water=?ml enzyme= 0.2ml total volume =1ml (V2) I need help with a dilution, I understand that you would be using c1v1=c2v2 but im confused as to what we need to find the amount of

189. ## Math

Write the sentence as a proportion. Then solve the proportion * d is to 4 as 32 is to 56

190. ## English

Is this grammatically correct? Based upon a country sustained by ritual and tradition, this episode features a masked, villainous wrestler, known as Hombre sin Nombre, who reinvents himself for the sake of his family; a sorceress, referred to as Chef

191. ## Physics

A car accelerates uniformly from rest to a speed of 23.9 km/h in 8.2 s. Find the distance it travels during this time. Answer in units of m

192. ## social justice

how do you think globalization relates to the kind of large multinational corporations?

193. ## Physics

A boy sledding down a hill accelerates at 1.24 m/s2 . If he started from rest, in what distance would he reach a speed of 8.88 m/s? Answer in units of m

194. ## Physics

An elevator is moving upward 1.17 m/s when it experiences an acceleration of 0.33 m/s2 downward, over a distance of 0.75 m. What will its ﬁnal speed be? Answer in units of m/s

195. ## physics

A car enters the freeway with a speed of 6.4 m/s and accelerates uniformly for 2.9 km in3.4 min. How fast is the car moving after this time? Answer in units of m/s

196. ## science

When you merge cells, what happens?

197. ## complit

What is a spreadsheet used for?

198. ## current events

I am turning twenty-six on Tuesday October Eighth. I have a grace period from the insurance company that I can stay on for a while after my birthday. When should I start signing up for this brand-new health care program? Even after you apply, is there a

199. ## math

Researchers discovered a large group of krill that was more than 30,000 feet long.About how long is 30,000 feet measured In the number of krill .

200. ## chemistry science

substrate concentration= 3.5mM (c2) buffer=0.4 ml 10mM PNPP stock= ?ml (V1) water=?ml enzyme= 0.2ml total volume =1ml (V2) I need help with a dilution, I understand that you would be using c1v1=c2v2 but im confused as to what we need to find the amount of

201. ## science

in each duagram a black circle represents a[particle of salt . white circle represents particles of water. which diageram coorecctly showws a solution

202. ## psy/315

I need someone to help me answer this question please. What is the five-step process for hypothesis testing, and explain the procedure and logic for each.

I had to find the distance between to locations on a graph which I did using the distance formula I got sqrt281 from point a (-6,3) point b (10,9). The problem is each unit is approximately 1/8 of a mile. Now what? Round your answer to the nearest tenth of

Can you help

206. ## Chemistry

Convert 355.3 kg to tons. I start the problem: 355.3 kg to 1 kg then 1 x 10 to the third power, then I have 1g. My problem is that I don't know what to do with my 1 g. What is the next step?

207. ## Math

A yard measures a x b feet the swingset space is a x c feet how much lawn is left after swing set

208. ## Algebra 1

6.4+2.1(z-2)=8.5 Can you show the work

209. ## English 11

Please help?! 9. Which of the following is NOT a primary source from early american and colonial literature? -The song of hiawatha -"sinners in the hands of an angry god" -the federalist papers -notes in the state of virginia

210. ## Fair Division-Apportionment

I have to do a problem where : a) Find the standard division d b) Find the exact quotas for each of the republics c) Find the apportionment of seats using Hamilton's method The info is REPUBLIC: Argh Brwd Chrd Dstyr Eoia Population:7.65 4.45 8.52 9.98 6.51

211. ## World History

Which of the following is not a reason for the collapse of classical empires? A. Small size of empire B. Large size of empire C. Invasions D. Diseases I know invasions is not the correct answer.

212. ## Geography

Name the state capitals the Seattle Seahawks will fly over en route to circle city ________ _ _ ; _________ _ _ P.s. HELP I have a bunch of questions!

How many distinct ways are there to label the faces of a cube with distinct numbers from 1 to 6, such that there is at least one pair of opposite faces which do not sum to 7? Rotations (which preserve orientation) are considered the same way. Reflections

214. ## math - calc

A conical water tank with vertex down has a radius of 12 feet at the top and is 26 feet high. If water flows into the tank at a rate of 30 {\rm ft}^3{\rm /min}, how fast is the depth of the water increasing when the water is 12 feet deep?

I need a website that will give me ideas on how I can tutor my kids in Reading, Spelling and Pronouncing of words. But I need it to be in a manner that is fun and simple.

216. ## aLGEBRA 2 help please would appreciate

x+x/4=25/6 find x please show all the step thank you

217. ## Math

At the bake sale,pies were cut 8pieces and sold by the slice. At the and of the sale, there were 11 pieces left. How much pie is left? Write your answer in different way.

218. ## Math

Find the rate in mph of someone who drove 12 miles in 45 minutes

220. ## Government

Did the Taney court increase the power if the states

221. ## math

How much will Pauline pay in interest if she takes out a simple interest loan with a principal of \$3,900 at 7.2% for three years?

222. ## physics

a ball is thrown at a vertical velocity to an angle of 30 degree above the horizontal and rises to a maximum height of 50 meters.if the angle is tripled find the maximum height and the horizontal range of a projectile for the same intial velocity

223. ## algebra 1

The sum of four consecutive integers is decreased by 30, the result is the fourth integer. Find the four integers.

224. ## Math

Emma is 5 years older than 6 times beth's age. If Emma is 29 years old how old is Beth?

225. ## Algebra 1

what is the value of x in the rectangle Perimeter=24 meters the side is (x+3) The bottom is 2x

226. ## alGEBRA 2 help please would appreciate

x over (x+3) -x over(x-3)=x^2+9 over X^2-9 solve for x and check answer

227. ## social justice

what is the difference in older forms of corporate censorship and how it looks today?

228. ## Physics

A 2.0 mm diameter copper ball is charged to +42 nC. What fraction of its electrons have been removed? The density of copper is 8,920 kg/m3

229. ## Nfl

The Detroit lions will cruise to their game by sailing north on the ------- river across lake -- ----- Up the -- ----- river across lake ----- through the straits of -------- a Ross the north end of lake -------- around the tip of the door peninsula and

230. ## Geography

Hello, I am doing a presentation on the role and importance of rifts and ridges in the creation of continents. I am having a really hard time telling the difference between the two! I have researched them both and find them very similar...help! Thanks

231. ## Math Fractions with negatives

1. 1/6+5/7=6/7 2. 3/10+3/10=3/5 3. 2/9+(-4/9)=-2/9

232. ## Physics

A football is kicked off with an initial speed of 63 ft/s at a projection angle of 45 degrees. A receiver on the goal line 67 yd away in the direction of the kick starts running to meet the ball at that instant. What must be his minimum speed (in

233. ## physics

0.5 mol of salt (NaCl) is dissolved in 4.5 mol of water. What is the increase in entropy

234. ## Physics

Nuclear fusion reactions require that positively charged nuclei be brought into close proximity, against the electrostatic repulsion. As a simple example, suppose a proton is fired at a second, stationary proton from a large distance away. What kinetic

2/8=x+2/72

236. ## Organic Chemistry

What reagents will separate, isolate, and purify 50% phenanthrene, 40% methyl 4-aminobenzoate, and 10% 1,4-dibromobenzene? The reagents to chose from are: 1 M naoh, 6 M naoh, 1 M hcl, 6 M hcl, 1 M nahco3, saturated sodium chloride, diethyl ether, 95%