# Questions Asked onFebruary 12, 2012

1. ## 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?

2. ## 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

3. ## Chemistry

A solution of 1.50g of solute dissolved in 25.0 mL of H2O at 25C has a boiling point of 100.95C. What is the molar mass of the solute if it is a nonvolatile non electrolyte and the solution behaves ideally. (d of H2O at 25C=0.997g/mL)?

4. ## Chemistry

The half-life for the process 238 U --> 206 Pb is 4.5*10^9 yr. A mineral sample contains 66.0 mg of 238 U and 16.0 mg of 206Pb. What is the age of the mineral?

5. ## Physics3

Two charged particles of equal magnitude (+Q and +Q) are ﬁxed at opposite corners of a square that lies in a plane (see ﬁgure below). A test charge −q is placed at a third corner. If F is the magnitude of the force on the test charge due to only one

6. ## physics

A golf ball is struck with a five iron on level ground. It lands 92.7 m away 4.40 s later. What was (a) the direction and (b) the magnitude of the initial velocity?

7. ## MATH

Find the length of segment RS if S between R and T, the length of RS is 1/3 the length of segment RT, RS=3x-3 and ST=2x+6.

8. ## Chemistry

A 200. gram sample of a salt solution contains 0.050 grams of NaCl. What is he concentration of the solution in parts per million? a)50. ppm b)250. ppm c)2.5 * 10^-4 ppm d)5.0 * 10^4 ppm

9. ## MATH

find y if s is the midpoint of segment RT, T is midpoint of segment RU, RS = 6x+5, ST=8x-1, and TU=11y+13.

10. ## calculus

5. If f (x)=(2x+1)^4 then the 4th derivative of f(x)=0 at x = 0 is..

38. ## Chemistry

Calculate the moles of hexane required to form 150 g of carbon dioxide. Please show all working. Thank you.

39. ## Math

Hayley has 16 square boxes to make an array of rectangular shapes on a grid. Harry says if she uses 19 square boxes she will get more arrays. Do you aree or disagree with Harrys' claim? Explain your answer using prime and composite numbers. Use the

40. ## statistics

. A professor is interested in knowing the correlation, if any, of students’ scores on the first and second exams given in his class. Test 1 Test 2 92 86 90 87 89 85 82 90 88 79 92 90 100 92 91 84 Is there a significant correlation? Explain its

41. ## British Literature

What figure of speech is used in this statement: "Good Mistress Accost, I desire better acquaintance."

42. ## Chemistry

1) Benzene freezes at 5.45 degrees celsius. The Kf for benzene is -5.07C/m. What would be the freezing point of a 0.210m solution of octane in benzene? I am not sure how to start this. I know the equation for freezing point is Kfp * m solute.

43. ## chemistry

if not all the magnesium reacts, will the reported magnesium to oxigen ratio be too high or too low?

44. ## calculus

The Revenue from the sale of x units of a product is represented by the following formula: R = 20(3x + 1)^-1 + 50x - 17 dollars. Find the Marginal Revenue when 20 units are sold?

45. ## Chemistry

Which aqueous solution below is expected to have the lowest freezing point? Assume 100% dissociation for ionic species. 1)0.25m MgBr2 2)0.30m Na2SO4 3) 0.50m KCl 4) 1.0m sucrose 5) 0.40m Cr(NO3)3 I think that the answer is 0.30NaSO4 but I am not positive.

46. ## Physics

A girl places a stick at an angle of 60.0° against a flat rock on a frozen pond. She pushes at an angle and moves the rock horizontally for 2.00 m across the pond at a velocity of 4.00 m/s and a power of 160.0 W. What force did she apply to the stick? How

An aircraft have a speed in still air of 400 km/h. A wind is blowing from the south at 80 km/h. The pilot wishes the aircraft to travel due east. Find the direction in which aircraft should be steered and the speed at which it will travel.

49. ## Physics1

Four point charges are placed at the four corners of a square. Each side of the square has a length L. Find the magnitude of the electric force onq2 due to all three charges q1, q3 and q4 for L = 1 m and all q = 1.55 C. Answer in units of N

50. ## Physics2

A particle of mass 47 g and charge 54 C is released from rest when it is 13 cm from a second particle of charge −15 C. Determine the magnitude of the initial acceleration of the 47 g particle. Answer in units of m/s2

51. ## math

How many different rectangular prisms can be made using 36 cubes if the height is 2 cubes?

52. ## Math

Nico is saving money for his college education. He invests some money at 5%, and $2300 less than that amount at 3%. The investments produced a total of$163 interest in one year. How much did he invest at each rate?

53. ## Physics

Give an example of a vertical motion with a positive velocity and a negative acceleration. b. Give an example of a vertical motion with a negative velocity and a negative acceleration.

A boat which can travel at 5m/s in still water is crossing a river 200 m wide.the rate of the flow of the river is 2 m/s assumed uniform at every point in the river. Point A and B are directly opposite to each other across the river. a) If the boat leaves

55. ## artwork critique

this be the last one Judgement : Do you like it, and is it successful? how well you think you have done with materials used? is it original, innovative, and daring? does the artwork make you think beyond the image? is the artwork successful? how? do you

56. ## Chemistry 101

A bag contains a mixture of copper and lead BBs. The average density of the BBs is 9.60g/cm cubed. What is the percent of copper and the percent of lead?

57. ## Chemistry

Which of the following contributes to the bubbling from a cold can of soda when left standing at room temperature. Choose all that apply. 1) the initial rush of CO2 out of the can drags other CO2 molecules out of the solution. 2) the decrease in CO2

58. ## physics

a .20 kg ball on a string is whirled on vertical circle at constant speed. When the ball is at 3:00 position, tension is 16 N. a) is centripetal force acting on ball the same at each point on the circle? b) when the ball is at 3:00, what is proving the

59. ## physics

A tractor of mass 5000kg is used to tow a car of mass 2500kg.The tractor moved with a speed of 3meter per secound.Just before the towing rope cuts,calculate (a)the speed of the tractor immediately the rope cuts

60. ## Physics II

two perpendicular, long, straight wires, both of which lie in the plane of the paper. The current in each of the wires is I = 4.5 A. In the drawing dH = 0.13 m and dV = 0.48 m. Find the magnitudes of the net magnetic fields at points A and B. The drawing

61. ## algebra

-3 > x > 5 as the inequality that represents the real numbers less than -3 or greater than 5. Explain why this is incorrect.

asked by lucy needs help now
62. ## Chem

a solution containing 100g of unknown liquid and 900g water has a freezing point pf -3.33 C. given kf=1.86 degrees c for water, the moelcular weight of the unknown liquid is what?

63. ## Finance

Item Total assets $10,000,000 Total equity (all common) 9,000,000 Total debt 1,000,000 Annual interest 100,000 Total sales$25,000,000 EBIT 6,250,000 Earnings available for common stockholders 3,690,000 I am trying to find the values for the: (1) Operating

64. ## Math

it takes Lucy 7 minues to cut a 20 yard by 1-yard roll of fabric into 14 equal pieces. How many minutes would it ake her to cut the fabric into 25 equal pieces?

65. ## physics

From what distance can these light bulbs be marginally resolved by a small telescope with a 6.0 cm-diameter objective lens? Assume that the lens is limited only by diffraction and wavelength = 600nm

66. ## Physics

A 1.26 kg block is held against a spring of force constant 2.0 103 N/m, compressing it a distance of 0.18 m. How fast is the block moving after it is released and the spring pushes it away?

67. ## Physics

A box is being with a velocity v by a force P (parallel to to v) along a level horizontal floor. the normal force is Fn, the kinetic frictional force if fk, and the weight of the box is mg. Decide which forces do positive, zero or negative work and why?

68. ## physics

11. You did 150. J of work lifting a 120.-N backpack. a. How high did you lift the backpack? b. How much did the backpack weigh in pounds? (Hint: There are 4.448 N in one pound.)

69. ## percentage

Karen took 1h 45m to drive from town a to town b.she took another 25m to drive town b to town c.after that,she drove back to town a.the journey from town a to town c and then back to town a took 3h 35m. find the percentage of the time she spent driving

70. ## Chemistry

Determine the grams of hexane that will react exactly with 22 g of oxygen. Show all working please. Thank you.

71. ## Geometry

Harris is planting a rectangular garden with an area of 48 square feet . He is also putting a fence around his garden . How should hr arrange his garden so he can buy the least amount of fence?

72. ## electrostatic physics

An uncharged molecule of DNA (deoxyribonucleic acid) is 2.15 m long. The ends of the molecule become singly ionized so that there is a charge of −1.6 × 10^−19C on one end and +1.6 × 10^−19C on the other. The helical molecule acts like a spring and

73. ## statistics

A professor is interested in knowing the correlation, if any, of students’ scores on the first and second exams given in his class. Test 1 Test 2 92 86 90 87 89 85 82 90 88 79 92 90 100 92 91 84 Is there a significant correlation? Explain its statistical

74. ## electrostatic physics

A particle of mass 47 g and charge 54 C is released from rest when it is 13 cm from a second particle of charge −15 C. Determine the magnitude of the initial acceleration of the 47 g particle. Answer in units of m/s2

75. ## Physics4

2. At the point of fission, a nucleus of 235U that has 92 protons is divided into two smaller spheres, each of which has 46 protons and a radius of 5.9 × 10^-15 m. What is the magnitude of the repulsive force pushing these two spheres apart? The value of

76. ## PHYSICS CAN ANYONE HELPPPP PLEASE

A crow sits on a clothesline midway between two poles as shown. Each end of the rope makes an angle of θ = 28° below the horizontal where it connects to the pole. If the combined weight of the crow and the rope is 11.1 N, what is the tension in the rope?

77. ## Chemistry

How to calculate the molarity of phosphoric aci9d in a solution that is 84% by mass phosphoric acid and a density of 1.87 g/ml

78. ## physics

under the influence of its drive force, snowmobile is moving at constant velocity along a horizontal patch of snow. When drive force is shut off, snowmobile coasts to a halt. a) During the coasting phase, what is the net external force acting on the

79. ## math

A triangular pyramid has a triangle base of 24 cm, triangle height of 16 cm, and a pyramid height of 14 cm. what is the volume of triangular prism.

80. ## Chemistry

If all ionic substances completely ionized, the aqueous solution with the lowest freezing point would be 1)0.25m NH4NO3 2)0.30m BaCl2 3) 0.35m LiBr 4) 0.50m Sucrose 5) 0.40m MgSO4 I know that i have to multiply m and i to find the largest delta T. I am

81. ## Physics

A 9.5-kg watermelon and a 7.2-kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. Pumpkin is at left of angle n is 53 degrees and watermelon is on right and at 30 degrees

82. ## physics

A uniform horizontal rod of mass 2.4 kg and length 0.86 m is free to pivot about one end as shown. The moment of inertia of the rod about an axis perpendicular to the rod and through the center of mass is given by I = (m*l^2)/12 If a 6.8 N force at an

A helicopter is lifting two crates simultaneously. One crate with a mass of 151 kg is attached to the helicopter by cable A. The second crate with a mass of 79 kg is hanging below the first crate and attached to the first crate by cable B. As the

84. ## statistics

Now, let’s look at a situation in which we compare three college math teachers to each other with respect to how interested they keep their students. The study was conducted among freshmen enrolled in an introductory course. The unit was quadratic

85. ## Physics

An image of the moon is focused onto a screen using a converging lens of focal length f= 35.3 cm. The diameter of the moon is 3.48×106 m, and its mean distance from the earth is 3.85×108 m. What is the diameter of the moon's image?

86. ## POETRY

Who is the intended audience for the poem Flesh and Spirit by Anne Bradstreet? I also need an example of contemporary relevance for the poem. Help please?

87. ## economics

For the total variable cost (TVC), draw a positive total fixed cost (TFC) and total cost (TC) curves. Then derive the associated marginal cost (MC), average total cost (ATC), average variable (AVC) and average fixed cost (AFC) curves. Be sure to capture

88. ## Chemistry

A solution was made by dissolving 62.07 grams of a compound in 500g of water. The compound was not ionic. The freezing point of the solution was measured and found to be -1.86 degrees celsius. Using the Kf value in your textbook, the molar mass of this

A ball is thrown downwards at a velocity of 14m/s from a bridge. One second earlier a rock is dropped from the same bridge. a)When will the ball meet up with the rock. b)When will the ball meet up with the rock? c)What is the initial minimum speed by the

90. ## algebra

Explain how you find ordered-pair solutions of the equation 3x - 5y =15, and then find two such solutions.

asked by lucy needs help now
91. ## Physics

A 9.5-kg watermelon and a 7.2-kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. Pumpkin is at left of angle n is 53 degrees and watermelon is on right and at 30 degrees

92. ## Physics

A 2.3 kg ball tied to a string fixed to the ceiling is pulled to one side by a force Farrowbold to an angle of θ = 26.4°. Just before the ball is released and allowed to swing back and forth, how large is the force Farrowbold that is holding the ball in

93. ## statistics

Five independent samples, each of size n, are to be drawn from a normal distribution where sigma is known. For each sample, the interval (y-bar - 0.96 * sigma/sqrt(n), y-bar + 1.06 *sigma/sqrt(n)) will be constructed. What is the probability that at least

94. ## SCIENCE

Two 2.6 kg physical science textbooks on a bookshelf are spaced 0.22 m apart. What is the magnitude of the gravitational attraction between the books?

95. ## math

Q=3x^2+4y^2 if x+y=7 what is minimum value for Q. I have absolutely no idea how to solve this problem.

96. ## algebra

Explain the words relation and function. Include in your explanation how the meanings of the two words differ. Give a real-world example of a relation that is not a function. Is it possible to give an example of a function that is not a relation? If so,

asked by Lucy needs help now
97. ## Economics

Please check my work! Thanks! 1. The employees of Abs “R” Us, which includes 12 fitness parlors in and around the metro area, feel they can improve the performance of the company. They decide to pool their resources to purchase the company. This would

98. ## Chemistry

Cobalt-60, which undergoes beta decay, has a half-life of 5.26 yr. How many beta particles are emitted in 190s by a 3.10mg sample of Co-60? What is the activity of the sample in Bq?

99. ## Physics

A 2.3 kg ball tied to a string fixed to the ceiling is pulled to one side by a force Farrowbold to an angle of θ = 26.4°. Just before the ball is released and allowed to swing back and forth, how large is the force Farrowbold that is holding the ball in

100. ## Physics

A 2.3 kg ball tied to a string fixed to the ceiling is pulled to one side by a force Farrowbold to an angle of θ = 26.4°. Just before the ball is released and allowed to swing back and forth, how large is the force Farrowbold that is holding the ball in

A generating station is producing 2.00 106 W of power that is to be sent to a small town located 7.0 km away. Each of the two wires that comprise the transmission line has a resistance per kilometer of length of 5.00 10-2 /km. (a) Find the power lost in

102. ## SCIENCE3

Identify one external feature of the manatee that allows it to live in water. Please help me with this one too!?

103. ## chemistry

A student is given 3 beakers: Beaker 1- 50.0 ml of a solution produced by dissolving 6.00 grams of a weak monoprotic acid ,HX, in enough water to produce 1 liter of solution. The empirical formula of HX is CH2O. The solution contains 3 drops of

104. ## PHYSICSSS

Two boxes with different masses M1 = 1.8 kg and M2 = 2.6 kg are tied together on a frictionless ramp surface which makes an angle θ = 21° with the horizontal (see the figure below). What is the tension in the rope connecting the two boxes? N What is the

105. ## physical

Consider a pulse of laser light aimed at the moon that bounces back to earth. The distance between Earth and Moon is 3.8 x 10 (small eight above) m. Show that the round-trip time for the light is 2.5 s.

Two boxes with different masses M1 = 1.8 kg and M2 = 2.6 kg are tied together on a frictionless ramp surface which makes an angle θ = 21° with the horizontal (see the figure below). What is the tension in the rope connecting the two boxes? N What is the

107. ## Math

At a summer camp there are 60 girls and 30 boys. Twenty percent of girls and 40% of boys passed the swimming test. What percent of the campers passed. Please show working.

A helicopter is lifting two crates simultaneously. One crate with a mass of 151 kg is attached to the helicopter by cable A. The second crate with a mass of 79 kg is hanging below the first crate and attached to the first crate by cable B. As the

109. ## Statistics

On a chemistry exam, Student A scored a 81 and Student B scored a 70. The mean for the class was 75 and the standard deviation was 3.8. What percentage of students scored in somewhere in between Student A and Student B?

110. ## statistics

Assume that the population of heights of female college students is approximately normally distributed with mean m of 66 inches and standard deviation s of 4.00 inches. Show all work. (A) Find the proportion of female college students whose height is

164. ## math

My niece has asked me to help with a math project. Maybe I am putting too much into it but I do not understand it. Any help would be great. It is a "Tissue Box Project". Any ideas?

165. ## MATH

If 2 angles are adjacent, can it also be said they form a linear pair? Why?

166. ## science

Compare optical telescopes and radio telescopes. What are the advantages of using a radio telescope over an optical one? All I can think of is, that radio telescopes can be used in any form of weather and optical telescopes can't. I'm not sure if that is

167. ## communication

Can anyone explain to me what the meaning of "communication phenomenon" exactly is? Thankssss!

168. ## SS7R Question/Help! (plz read)

The American Revolution From 1763 through 1776 the American colonies sprit of rebellion was escalating. After a long period of being ignored, England put harder rules over the colonist. Economic, political, and social factors made the colonist take steps

169. ## Chemistry

Cobalt-60, which undergoes beta decay, has a half-life of 5.26 yr. How many beta particles are emitted in 190s by a 3.10mg sample of Co-60? What is the activity of the sample in Bq?

170. ## Healthcare

I have to do an assignment on Trends and Consumerism in Healthcare. What is a topic that I can do for this assignment? Please help I am Lost.

171. ## Math

A test has 125 items. Each correct answer earns 1point and 65% is a passing grade. If you get 42 answers wrong will you pass? Show working

172. ## chemistry

Explain how you would prepare this solution from powdered reagents and whatever glassware you needed: 3.0 L of 1.3 M NaOH

173. ## Math

why might Pa^t and Pe^rt not produce the same answer? Thank You

174. ## CHEM

Cl2 + SO2 + 2 H2O --> 2 Cl^1- + SO4^2- + 4 H^1+ 1) Which element is oxidized ? (simply write the element symbol; e.g. Fe, O) 2) How many electrons are lost by each atom ? (1, 2, 3) 3) Which element is reduced ? 4) How many electrons are gained by each atom

175. ## math

A girl cycles from her house to a friend’s house at 22 km/h and home again at 26 km/h. If the round trip takes 54 min, how far is it to her friend’s house? Round your answer to the nearest 0.1 km. [

176. ## Chemistry

What is the mass of a solution that has a volume of 0.100L and a density of 1.07g/ml. Find in grams and In kilograms.

177. ## Biology

In ion exchange chromatography, why do you have to be careful not to disturb the resin bed or let air enter the resin bed? I get that it disturbs resolution.. but I'm not sure exactly what to say.

178. ## Statistics

A manufacturer of a low-tar cigarette claims that their cigarettes contain an average of 16.3 mg of tar with a standard deviation of 3.1 mg per cigarette. How many sample cigarettes must the manufacturer observe to be 99% confident that the width of the

179. ## geography

1. Sofia is the capital of what European nation? Bulgaria 2. Find the Nile River in Africa. What two cities are located near its Delta? Cairo and Alexandria 3. What large island is found off the coast of southern Labrador? Newfoundland 4. What is the

180. ## English

Thank you very much. Here is the second list of verbs I'd like you to check.I'd also need to rephrase each sentence using a verb which is not phrasal. Can you please help me? 1) A long strike threatened to bring down the Government 2) I’m sure this

181. ## Math 208

The number of state federal inmates in millions during year x, where x is greater than or equal to 2002 can be approximated by the following formula N=0.04x-78.96 Determine the year in which there were 1.2 million inmates

182. ## SCIENCE

Determine the mass of a person on the moon whose mass on Earth is 70 kg Determine the weight of a person on the moon whose weight on Earth is 148 lbs. How is the mutual gravitational force affected by changing the separation distance between two 1.0 kg

How could you find the measurements of the garden with a perimeter of 60 feet and the greatest possible area?

184. ## Gov

I'm still struggling with the following questions as I received help before: 1) Explain Obama's administrations stance on net neutrality.. from what I read I think he's for it 3) Why didn't the FCC's ruling cover wireless providers? can I have a specific

197. ## geometry

area of a triangle is 50 centimeters and the base is 4 times the height what is the height?

198. ## Maths

In a triangle ABC, AD is the altitude and AD = 10 cm and CD = 10 sqrt 3 cm, determine angle A ?

200. ## Spanish

Answer in complete sentences. Te gusta más comer el desayuno o el almuerzo? ¿Por qué? My answer: Me gusta más comer el desayuno porque es nutritivo y bueno.

201. ## science

A force of 2000N is used to push a box up an inclined plane that is 5m long. If the 100 kg box is raised to a height of 8m, how much work is done against friction? Let g equal 10 m/s2; I need to know how to set the problem up

202. ## law

can somebody who has done LLB advice me on studyn for da first year exam in may..i fear cz i was not really in touch n i doubt whethr i can score well for all 4 subjects(criminal/contract/constitution/english legal system) pls advice me how to pass all

203. ## linear algebra

Use an inverse matrix to solve each system of linear equations. A) x+2y=-1 B)x+2y=10 C)x+2y=-3 x-2y=3 x-2y=-6 x-2y=0

204. ## English

What is a narrative essay? What else besides the recap of?

205. ## math

divide 1 yd 4 in. by 5

206. ## English

I included an introduction to 18th-century novels (is it correct?) + the features of Defoe's novels. Thank you. 1) Structure of his novels His novels are fictional autobiographies always pretending to be true stories. 2) They are preceded by a preface by

207. ## Chemistry

Is there any way to increase the ionic strength of a solution without increasing the pH?

208. ## is this correct?- math

find the domain of the real valued function; f(x) = sqrt(5 - (sqrtx)) my solution: 5 - (sqrt x) >=0 -(sqrt x) >= -5 (sqrt x)

209. ## English

Thank you very much. By the way, what do you think of our Comenius project? Do you think we did a good job? I still have a few setences on phrasal verbs I'd like you to check. (especially the reprhase of 1) 1) I can't understand the various meanings of

210. ## chemistry

a. A 0.1 molal solution of a weak monoprotic acid was found to depress the freezing point of water 0.1930C. Determine the Ka of the acid. You can assume 0.1 molal and 0.1 molar are equivalent. b. 100 ml of a 0.1M solution of the above acid is titrated with

211. ## Math

A 3 digit code can be made using the numbers 6,7,8,9, or 0? If repetition is not allowed, how many different codes are possible?

212. ## English

I left out two sentences I need to write in an email. 1) I wrote to the two Irish school's principals you suggested (to me) but none of them replied to my email. 2) As I would really like to start a school exchange programme with an Irish school in your

213. ## function with a radical expression

f(x)=6 fx)=20+2x^2 all under a square root symbol 6=20+2(36) 6=the square root of 92 will someone help me

A train engine pulls out of a station along a straight horizontal track with five identical freight cars behind it, each of which weighs 88.0 kN. The train reaches a speed of 13.0 m/s within 6.50 min of starting out. Assuming the engine pulls with a

215. ## artwork meaning

i make shattered image in art, but what shattered image mean? does it have meaning? i thought maybe it mean search for yourself.

A 9.5-kg watermelon and a 7.2-kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. (a) Find the accelerations of the pumpkin and the watermelon. Specify magnitude and

217. ## ece

preschoolers use private speech: a)to influence others b)to keep some of their ideas a secret c)because it is more efficient d) because it enables them to communicate new ideas

218. ## Calculus

Could someone help me with this question. Determine what limit would be represented by the following graph. imgur dot com/bceWN I am not sure if it has open dot or closed but what would the equation be for open and closed dot?

219. ## PHYSICSSSS

A train engine pulls out of a station along a straight horizontal track with five identical freight cars behind it, each of which weighs 88.0 kN. The train reaches a speed of 13.0 m/s within 6.50 min of starting out. Assuming the engine pulls with a

220. ## Math 117

Use rational exponent to write 4 cube root x multiply by 6 cube root 6x as a single radical expresion.

221. ## Engineering

A force of 26 lb. acts through a point (4; 5; -7) ft. and is equally inclined to the positive ends of the orthogonal axes. What is the moment of this force about the origin So i'm assuming vector r is 4i+5j-7k? And using the fact that cos^2α + cos^2β +

222. ## math

A car is traveling at 120 km/h. How far does it travel in 6 1/3 hours?

why would a shredded carrot turn the softest when it is sitting on top of a table out in the open air compared to the carrot in water and the carrot in salty water?

224. ## Calculus

I think I wrote it wrong earlier it should be Find the derivative y = (3x+2)/(x+1)

225. ## maths

in figure m // n and angle l and 2 are in the ratio 3:2 determine all the angles from 1 to 8

226. ## geometry

The lengths of three sides of a triangle are given. Describe each triangle as acute. right. or obtuse. square root 5, 3, square root 14.

227. ## Geometry

The lengths of three sides of a triangle are given. Describe each triangle as acute. right. or obtuse. 5, 6,10.

228. ## phi 103

All dogs hate cats. Sirius is a dog. So Sirius hates cats" is an example of a

229. ## algebra

please check and correct if needed. thanks problem: you have coupon of $50 off your telephone purchase of$100 or more at bell store. a. write a function relating phone purchase price after coupon, y, to the retail price, x . give the domain of this

230. ## math-measurement

Subtract 1 foot 7 inch from 2 feet 2 inches

231. ## chemistry/help

1) Oxygen and boron are in the same period . When they form a compound----- is written first.Phosphorus and arsenic are the same group. When they form a compound------is written first. A) oxygen/phosphorus B)oxygen/arsenic C)boron/phosphorus

232. ## ELA

We have to do something about dogs Name brands of dog foods

233. ## Math

State the equation of the line passing through the points (7,-1) and (2,2) a) 5x+3y-16=0 b) -5x-3x-16=0 c) -3x - 5y - 16=0 d) 3x + 5y-16=0 ------------------------------------ Is letter D correct?

234. ## math-measurement

How do i multiply 2 yards 1 foot by 8

235. ## ece

words are: A)convenient communication shortcuts B)not arbitrary symbols C)unique to each individual in english D)thoughts written down I chose b is this correct

236. ## Science

what are contrasts between a marine and estuarine environment?

237. ## Biology

How are soldier crabs useful to us and what things are humans doing to wipe them out?

238. ## ece

It is likely that a preschooler who learns to read early: A) will watch a lot of tv B) will enjoy playing outdoors as do other children C) will watch less tv than other children D)will enjoy playing outdoors as do other children and will watch less tv than

239. ## Languages

How do you say the word "love" and "kind" is many languages. (the language doesnt matter, a list would be great)

240. ## my quetion earlier was NOT answered

I'm still struggling with the following questions as I received help before: 1) Explain Obama's administrations stance on net neutrality.. from what I read I think he's for it 3) Why didn't the FCC's ruling cover wireless providers? can I have a specific

241. ## math

Please show me how to set this up and how to solve: A ribbon with straight edges has an area of 24 inches squared. Its width is x and its length is 2x + 13. What is the width of the ribbon in inches?

242. ## physics

For a spring block system M=2.72*10^5kg frequency 10.0 hertz and amlitude 20.0cm (a) What is E (b) What is the block speed at its passes the equlibrium point.

243. ## Math

How do I set this up and how do I solve: The sum of two numbers is 20 The difference between 3 times the larger number and twice the smaller number is 40. What is the larger number?

244. ## Calculus

Find the derivative y = 3x+2/x+1

245. ## Engineering

The angular velocity of a rigid body rotating about an axis of rotation is w = 5^i + 2^j - 4^k rad. per. sec. Determine the linear velocity of point B on the body with a position vector r = 3^i - ^j + 3^k ft. directed from a point on the axis of rotation.

246. ## Calculus

find the area under the curve y = x^2 + x from the origin to the line x = 3

247. ## math

Solve by factoring: 12 w(squared) = 28w +5

248. ## Calculus

On what interval is the function f(x)=x^2-6x+8 is increasing?

249. ## science

identify onbe external feature of the manatee that allows it to live in water.

250. ## percentage

Sharil is cycling from his house to Jeju Island,which are 15km apart.If Sharil has cycled a distance of 9.5km,what percentage of the total distance does he have left? pls round off ur answer to 1 decimal place

251. ## math

how long is the diagonal of a piece of paper that is 8.5 in by 11in

252. ## algebra

make five sets of balanced equations for the number 20:

253. ## English

I urgently need you to check this sentence. Thank you. 1) In section F.4 concerning "integration into ongoing activity" our coordinating partner mistakenly wrote that our tenth classes instead of our eleventh classes, which correspond to the third classes

254. ## Pre-Calc

Write a Sinusoidal function for the following. A ferris wheel is 100 feet in diameter and makes one revolution in 45 seconds. If the rider needs to walk up a ramp to get to their seat that is 5 feet above the ground, write the model for the rider.

255. ## Math

Let f(t) be an exponential function with f(0) = 11 and f(4) = 59. Use the form f(t) = Pa^t to find an equation for this exponential function? What is the Value of P and A? Thanks!

256. ## Math

Let N(t) be the number of bacteria after t days. Then N(t) = Pa^t for some constants P and a. Measurements indicate that N(4) = 5600 and N(8) = 362, 000. a. Before working the problem, estimate the value of N(7), the number of bacteria at noon on the

257. ## ELA

Names of dog foods with artificial flavors

258. ## follow up from before

Is there some reason as to why nobody has addressed my financial accounting post from Saturday, February 11, 2012 at 5:45pm?

259. ## Math

What is the perimeter of a triangle 46m 36m and 9.5

12a2+8a-15

261. ## English

Here are the other phrasal verbs I need you to check (tell me of they are possible or of other are more often used) and which I also have to rephrase. Thank you very much! 1) Get your clothes off: they are all wet. 2) Get all that mess off your desk. I

262. ## chemistry

Given density of Mercury, 200.59....how do I calculate for the mass of 33.5mL

263. ## physics

differentiate between density,mass and volume. state a formula in terms of mass density and volume. using the formula calculate the volume of a 10kg block of ice

264. ## english

i need to create a eight song soundtrack and how they relate to romeo and juliet play.

265. ## math

how long is the diagonal of a piece of paper that is 8.5 in by 11in

266. ## math

how long is the diagonal of a piece of paper that is 8.5 in by 11in

267. ## math-measurement

Multiply 2 yards 1 foot by 8

268. ## Logics

Logicians regard the following as the meaning of the word "argument." (Points : 1) a. A hostile and emotional dispute b. A poetic tribute to Spring c. A set of reasons put forth to support a claim d. The kind of thing one has with a spouse

269. ## grammar

Is audience a pronoun, or just a noun? Can "yourself" be a demonstrative or Indefinite pronoun?

270. ## Electrical and electronic

What is a system characteristic and how does it relate to the compensation ?

271. ## Math 117

The formular r= 2 cube root5L can beusedto approximate the speed r,in mile per hour,of a car that has skid marks of lenght L,in feet. How far will a car skid at 60 mph.

272. ## english

i need to chose at least 8 songs and how they relate to romeo and juliet acts so i can make a soundtrack. thanks

273. ## physics

If a particle were to move from position A to position b in 0.5s, what would be its rotational (angular) velocity? If the motion is uniform (constant speed), what would be its magnitude of the acceleration?

274. ## math

What conjectures/predictions can you make about polynomial functions whose highest exponent is 6, or 7?

x^-7x-8

276. ## science

1. If a baseball is thrown 30 m/s backwards from a truck moving forward 50 m/s, how fast will the ball strike the glove of a ground-based catcher?

277. ## english

how do i create a eight song soundtrack

278. ## science4

Last one i swear.... If the manatees were able to make 3 adaptions to their body or way of life for their survival, what would they be?

279. ## math

Subtract 1 ft 7 in. from 2ft. 2in.

280. ## English

What are some culture collisions in the play othello by shakespere? i got one: color but i am stuck thank you

determine the domain of the real valued function f(x) = sqrt(5 - (sqrtx))

282. ## Math 117

Use rational exponent to write 4 cube root x multiply by 6 cube root 6x as a single radical expresion.

283. ## Phsyicsssss helppp

A 9.5-kg watermelon and a 7.2-kg pumpkin are attached to each other via a cord that wraps over a pulley, as shown. Friction is negligible everywhere in this system. (a) Find the accelerations of the pumpkin and the watermelon. Specify magnitude and

284. ## english

i need to chose at least 8 songs and how they relate to romeo and juliet acts

285. ## calc helppppp

use limits to find and verify all asymptotes in the graph y= sqr root (5+x^2)/(3-x)

286. ## ms. sue

ms. sue i write question in other post.

287. ## math

convert units in the customery units of measure 5yd 2ft = ? yd i got 5.67 yard

288. ## math

5 inches by 7 inches, and the box must be at least 4 inches tall. What is the least possible volume of a box, in cubic inches, that meets these requirements?