# Questions Asked onFebruary 17, 2011

1. ## math

why did they try to build a house on orgo's head?

2. ## pre-algebra

a bag contains 5 green marbles 2 white marbles 8 blue marbles 9 red marbles and 6 black marbles what is the probability of drawing a white marble replacing it and then drawing a green marble? Answer choices A 1/6 B 1/15 C 1/87 D 1/90 I think its D, but I

3. ## math

find the area of kite whose unequal sides are 15 cm and 20 cm respectively and the angle between the two unequal side is a right angle.

4. ## math

lyle needs 200g of chocolate that is 86% cocoa for a cake recipe he has one kind that is 99% cocoa and another kind that is 70% cocoa. How much of each kind does he need to make the cake

5. ## history

the island that became Rome northwestern frontier?

6. ## physics

As their booster rockets separate, Space Shuttle astronauts typically feel accelerations up to 3g, where g = 9.80 m/s2. In their training, astronauts ride in a device where they experience such an acceleration as a centripetal acceleration. Specifically,

7. ## PHYSICS

A copper vat is 10 m long at room temperature (20 degrees C). How much longer it is when it contains boiling water at 1 atm pressure? Air in a balloon does 50 J of work while absorbing 70 J of heat. What is its change in internal energy? A bottle

8. ## science/maps

Can a contour line on a topographic map connect a point with an elevation of 100 feet to a point with an elevation of 110 feet? Explain why or why not.

9. ## math

On the fastest speedways some drivers reach average speeds of 4 miles per minute. Write a formula that gives the number of miles m that such a driver would travel in x minutes. How far would this driver travel in 36 minutes?

10. ## Physics

A 200-g block is attached to a horizontal spring and executes simple harmonic motion with a period of 0.250 s. If the total energy of the system is 2.00 J, find (a) The force constant of the spring and (b) The amplitude of the motion.

11. ## histroy

describe several factors that caused the public to feel demoralized during the late 1800

12. ## physics

A)If a freight train can accelerate at 0.050 m/sec^2, how far must it travel to increase its speed from 2.0 to 8.0 m/sec? B) how long will it take the train to accomplish this?

13. ## Physics

On vacation, your 1200- car pulls a 540- trailer away from a stoplight with an acceleration of 1.50. What is the net force exerted by the car on the trailer?

14. ## spanish

do any of these words have accents? (if so please identify them): - abrigo - rapido - sabado - vez - menu - operacion - impermeable - ademas - regatear - antipatico - farmacia - esqui - pension - pais - perdon

15. ## Physics

If the amplitude of a sound wave is quadrupled, by what factor will the intensity increase?

16. ## physics

three more questions: 1) A 1.50kg projectile is launched at 18.0m/s from level ground. The launch angle is 26 degrees above the horizontal. (Assume negligible friction) a) What is the maximum height reached by this projectile? b) How was will the

17. ## physics

Two boxes with different masses M1 = 1.1 kg and M2 = 3.0 kg are tied together on a frictionless ramp surface which makes an angle θ = 27° with the horizontal (see the figure below). What is the tension in the rope connecting the two boxes? What is the

18. ## physics

A rock is thrown from a cliff top at 18m/s, 25 degrees above the horizontal. It lands on the beach 4.2 seconds later. a) What is the height of the cliff? b) Hor far from the base of the cliff did the rock land?

19. ## physics

A car travels due east with a speed of 35.0 km/h. Raindrops are falling at a constant speed vertically with respect to the Earth. The traces of the rain on the side windows of the car make an angle of 70.0° with the vertical. Find the velocity of the rain

Which of the following molecules is polar? NCl3, NO2, H2S, or SiH4

21. ## spanish

objeto indirecto Modelo ¿Puedes traerme tu plato? No, no te lo puedo traer. ¿Quieres mostrarle la carta? Sí, voy a mostrár la ahora. ¿Les serviste la carne? No, no la serví. ¿Vas a leerle el menú? No, no lo voy a leer. ¿Cuándo vas a prepararnos

22. ## english

what is the tone and diction in the poem Tableau by countee cullen

23. ## social studies

responsibility to ensure the prosperity of the city rome

24. ## chemistry

Consider the combustion reaction: C3H8 (g) + 5 O2(g) ---> 3 CO2(g) + 4H2O(g), where triangle symbol H= - 531 kcal/mol. If 6.70 x 10 to the 4th kcal of energy is released in the reaction, How many grams of oxygen were consumed

25. ## physics

The drawing below shows an elastic cord attached to two back teeth and stretched across a front tooth. The purpose of this arrangement is to apply a force to the front tooth. (The figure has been simplified by running the cord straight from the front tooth

26. ## chemistry

a liquid has an enthalpy of vaporization of 30.8 kg.mol. at 273 K it has a vapor pressure of 102 mmHg. What is the normal boiling point of this liquid

28. ## math

Bill purchased 4 pens for \$3.32 including \$.16 sales tax. FIND THE C COST OF ONE PEN. I need to write this in an equation. Then solve that's what the worksheet says.

29. ## physics

box full of books rests on a wooden floor. The normal force the floor exerts on the box is 235 N. a) You push horizontally on the box with a force of 121 N, but it refuses to budge. What can you say about the coefficient of static friction between the box

30. ## Physics

Kim is tuning a piano. She strikes a 440 Hz tuning fork and a string at the same time and hears 4 beats per second. a) What are the possibe frequencies of the string? b)She tightens the string a little then repeats. She now hears 1 beat per second. What is

31. ## chemistry

a liquid has an enthalpy of vaporization of 30.8 kg.mol. at 273 K it has a vapor pressure of 102 mmHg. What is the normal boiling point of this liquid

32. ## physics

A 150 kg safe on frictionless casters is to be raised with 1.2 meters off the ground to the bed of a truck. Planks 4m long are available for the safe to be rolled along. How much force is needed to push the safe up the truck?

33. ## physics

At what altitude above the Earth's surface would your weight be two-thirds of what it is at the Earth's surface? (Assume Re = 6.371 103 km.)

34. ## Chemistry

The Ka value of nitrous acid, HNO2 , is 4.0 × 10¯4 . What is the equilibrium constant for the reaction; NO2¯ + H2O HNO2 + OH¯ ?

35. ## Chem

What is the pressure in a 2.00 L container which holds 0.100 mol of methane and and 0.200 mol of carbon dioxide at standard temperature?

36. ## Chemistry

when 6 M NaOH is slowly added to a solution containing chromium (III) ion, a precipate forms. However when an excess of 6 M NaOH is added, the precipated dissolves forming a complex ion with a coordination number of four. 1) write the formula of the

37. ## MPG

a passenger car will go 525 miles on 17.5 gallons of gasoline in city of driving. what is the rate miles per gallon?

38. ## physics

A large wooden crate is pushed along a smooth, frictionless surface by a force of 87 N. The acceleration of the crate is measured to be 2.0 m/s2. What is the mass of the crate?

39. ## physics

A 10.0-kg block is at rest on a horizontal floor. If you push horizontally on the 10.0-kg block with a force of 20.0 N, it just starts to move. (a) What is the coefficient of static friction? b) A 12.0-kg block is stacked on top of the 10.0-kg block. What

40. ## Chemistry

1. Write balanced equations for each of the following processes. a. Chromium- 51, which targets the spleen and is used as a tracer in studies of red blood cells, decays by electron capture. b. Iodine-131, used to treat hyperactive thyroid glands, decays by

41. ## Chemistry

Please help! Answer the following for a body centered unit cell. Crystalline Solids Program Answers should be numerical, set r = 4.0. edge in terms of r, the lattice pt radius: face diagonal in terms of r, the lattice pt radius: body diagonal in terms of

42. ## chemistry

A solution is made by dissolving 46.5g of urea, (CH4N2O) a nonelectrolyte, in 316g of water. Calculate the vapour pressure of this solution at 40 oC. (ans in torr, note the vapour pressure of pure water at 40 oC is 55.3 torr.) I have been struggling with

43. ## Physics

A 20.0 g marble sliding to the right at 58.8 cm/s overtakes and collides elastically with a 10.0 g marble moving in the same direction at 14.7 cm/s. After the collision, the 10.0 g marble moves to the right at 73.5 cm/s. Find the velocity of the 20.0 g

44. ## Chemistry

What is the pressure in a 2.00 L container which holds 0.100 mol of methane and and 0.200 mol of carbon dioxide at standard temperature?

45. ## spanish

Ricardo y Tomás son los menos aburre (the least boring) de la fiesta. Mi profesor de biología es (the oldest) de la universidad. i got part of them right. like the first one would be menos que... and would second one be el mayor?

46. ## physics

A barge is hauled along a straight-line section of canal by two horses harnessed to tow ropes and walking along the tow paths on either side of the canal. Each horse pulls with a force of 700 N at an angle of 10° with the centerline of the canal. What is

47. ## physics

A box sits on a horizontal wooden board. The coefficient of static friction between the box and the board is 0.41. You grab one end of the board and lift it up, keeping the other end of the board on the ground. What is the angle between the board and the

48. ## Algebra

What are the solutions of the quadratic equation below? 4x2 - 30x + 45 = 0

49. ## thinking outside of the box

one taxi company charges 75 cents for the first quarter mile and 15 cents for each additional mile the competing taxi company charges 1.00 for the first quarter mile and 10 each additional mile what distance would produce the same fare for the two taxi

50. ## Biology

An organism has three independently assorting traits AaBbCc. What fraction of its gametes will contain the recessive gene abc?

51. ## Chemistry

Please help! Answer the following for a body centered unit cell. Crystalline Solids Program Answers should be numerical, set r = 4.0. edge in terms of r, the lattice pt radius: face diagonal in terms of r, the lattice pt radius: body diagonal in terms of

52. ## physics

A science student is riding on a flatcar of a train traveling along a straight horizontal track at a constant speed of 12.0 m/s. The student throws a ball into the air along a path that he judges to make an initial angle of 60.0° with the horizontal and

53. ## Physics

Aluminum is melted during the recycling process. (a) How much heat must be transferred to each kilogram of aluminum to bring it to its melting point, 660 degrees C, from room temperature, 20 degrees C? (b) About how many cups of coffee could you make with

54. ## chemistry

you are conducting a freezing-point determination in the laboratory by using an aqueous solution of KNO3. The observed freezing point of the solution is -1.15 C. Using a pure water sample, you recorded the freezing point of the pure solvent of the same

55. ## trig

From two points each on the opposite sides of a river,the angles of elevations of the top of an 80ft. tree are 60 degree & 30 degree.the points & the tree are in the same straight line,which is perpendicular to the river.how wide is the river?

56. ## Physics

A group of Mechanical Engineering students are attempting to pull a large crate of mass M=175.0kg on a level driveway. The coefficient of static friction ms = 0.610. They use a rope of dubious quality to pull the crate as indicated in the figure. At what

57. ## language arts

is this sentence correct -- Andrew forgot his lunchbox at school everyday.

58. ## math

Kent invested \$5000 in a retirement plan. He allocated x dollars of the money to a bond account that earns 4% interest per yr and the rest to a traditional account that earns 5% interest per yr. Write an expression that represents the amount of money

59. ## chem-repost

How many grams of magnesium oxide are formed when 13.5 L of oxygen gas, measured at STP, completely reacts with magnesium metal according to the following reaction? i got .496 g but i know that like way off

60. ## physics

A student throws a ball vertically upward such that it travels 7.5 to its maximum height.If the ball is caught at the initial height 2.3 after being thrown, what is the ball’s average speed? What is the ball’s average velocity?

61. ## Chemistry

a 265 ml flask contains pure helium at a pressure of 756 torr. A second flask with a volume of 460 ml contains pure argon at a pressure of713 torr

62. ## chemistry

400 cm3 of 0.5mol/dm3 hydrochloric acid was reacted with 5g of magnesium oxide. Calculate the mass of reacted oxide? Show the steps and thq..

63. ## IMPERIALISM AND THE PROGRESSIVE ERA

2. _______ pioneered the field of corporate public relations. A. Henry Ford B. Ivy. K. Lee C. Margaret Robins D. Samuel Gompers

64. ## Chemistry

The Ka value of nitrous acid, HNO2 , is 4.0 × 10¯4 . What is the equilibrium constant for the reaction; NO2¯ + H2O HNO2 + OH¯ ?

65. ## Physics

A cube of mass M=0.703 kg is placed on an incline and given a push. It slides down, and its speed down the incline is measured at two positions,  and  on the diagram below, with V1 = 0.923 m/s and V2 = 1.207 m/s. Note that the incline passes through

66. ## 7th grade math worksheet

Need help on how to actually do the rise/run and equations to figure out the anxwer to "What do you call a duck that steals?" worksheet. I can find the answer on your websight, but I need to show my work for numbers 1-6 using rise/run and numbers 7-18

67. ## science/maps

On a topographic map, how would you show a hill with an elevation of 80 feet if the contour interval is 10 feet?

68. ## physics

In zero-gravity astronaut training and equipment testing, NASA flies a KC135A aircraft along a parabolic flight path. As shown in the figure, the aircraft climbs from 24,000 ft to 32000 ft, where it enters the zero-g parabola with a velocity of 158 m/s at

69. ## Physics

Calculate the magnitude of the potential difference between points a and b in the figure if R1=2.36 Ù, R2=4.29 Ù,and R3=10.08 Ù.

70. ## physics

A Coast Guard cutter detects an unidentified ship at a distance of 16.7 km in the direction 13.8° east of north. The ship is traveling at 24.9 km/h on a course at 39.2° east of north. The Coast Guard wishes to send a speedboat to intercept the vessel and

71. ## Physics

A cube of mass M=0.703 kg is placed on an incline and given a push. It slides down, and its speed down the incline is measured at two positions,  and  on the diagram below, with V1 = 0.923 m/s and V2 = 1.207 m/s. Note that the incline passes through

72. ## physics

a race car travels northward on a straight level track at a contant speed traveling 0.750 km in 20.0s. the return trip over the same track is madein 25.os

73. ## statistics

Bill wants to write the equation that demonstrates the model for explaining quarter-life crisis. He is using optimism, locus of control, income, and years since completing college as explanatory variables. Which of the following equations is most

74. ## phys

To totally convert a given amount of mechanical energy into heat is Choose one answer. a. impossible. b. possible. c. impossible to answer without additional information.

75. ## marketing

Your manager has asked you to investigate the Internet marketing strategies used by the company's major competitors. Use the library, the Internet, and any other resources to research competitors and prepare a presentation. Here are the questions to

76. ## physics

A crate of oranges weighing 164 N rests on a flatbed truck 2.0 m from the back of the truck. The coefficients of friction between the crate and the bed are μs = 0.30 and μk = 0.20. The truck drives on a straight, level highway at a constant 7.6 m/s a)

77. ## physics

A mass of 8.10 kg is suspended from a 1.69 m long string. It revolves in a horizontal circle as shown in the figure. The tangential speed of the mass is 2.92 m/s. Calculate the angle between the string and the vertical.

78. ## physics

A crow sits on a clothesline midway between two poles as shown. Each end of the rope makes an angle of θ = 21° below the horizontal where it connects to the pole. If the combined weight of the crow and the rope is 8.3 N, what is the tension in the rope?

79. ## Physics

If one firework produces a sound intensity of 90 dB, what would be the intensity of a sound produced by 1000 firecrackers all going off at once?

80. ## chem

How many grams of magnesium oxide are formed when 13.5 L of oxygen gas, measured at STP, completely reacts with magnesium metal according to the following reaction? i got .496 g but i know that like way off

81. ## math

How do the ideas of divisibility and multiples relate to the study of fractions? Show that 1,078 and 3,315 are relatively prime. What is the shortest length of television cable that could be cut into either a whole number of 18-ft pieces or a whole number

write the formulas of the complex ion formed between a) the ligand, Cl-, and the platinum(II) ion with a coordination number of four. b) the ligand, NH3, and the nickel(II( ion with a coordination number of six. c)the ligand, ethylenediamine, and the

83. ## Calculus (pleas help I really need to check this)

Assume that each of the follwing functions gives the position of an object at time t. Find the velocities indicated by setting up and evaluating a limt algebraically. (a) s(t) = 3t^2, Find v(-1). (b) s(t) = 1/t , Find v(2). (c) s(t) = square root of t,

84. ## Algebra

I have a problem that I need help with can someone show me the steps LiveStock Feed- Soybean meal is 16% protein and corn meal is 9% protein. How many pounds of each shoul be mixed to get a 350-lb mixture that is 12% protein?

85. ## math

Kent invested \$5000 in a retirement plan. He allocated x dollars of the money to a bond account that earns 4% interest per yr and the rest to a traditional account that earns 5% interest per yr. Write an expression that represents the amount of money

86. ## ALGEBRA

FROM THE TOP OF A VERTICAL CLIFF 200M SEA LEVEL A BOAT WAS SIGHTED AT ANGLE OF 26CELSIUS ?

87. ## Calculus

A retangular poster is to be made out of cardboard. The margins on the top and the bottom will be 2 inches. The margins on the sides will be 1 inch. The area of the poster devoted to the printed material must be 300 square inches. (a) to the nearest .001

88. ## physics

A circular wire coil consists of 100 turns and is wound tightly around a very long iron cylinder with a radius of 2.5 cm and a relative permeability of 2200. The loop has a current of 7.5A in it. Determine the magnetic field strength produced by the coil

89. ## MacroEconomics

Assuming that the following table describes a typical consumer’s complete budget, compute the item weights for each product. Item: Quantity: Unit price: Coffee 20 pounds \$5 Tuition 1 year \$4,000 Pizza 100 pizzas \$8 DVD rental 75 days \$5 Vacation 2 weeks

90. ## algebra

multiply and simplify 5a^7. 6q^5 4q^2 25a

92. ## Chem

Upon decomposition, one sample of magnesium fluoride produced 1.65 of magnesium and 2.57 of fluorine. A second sample produced 1.38 of magnesium. How much fluorine (in grams) did the second sample produce?

93. ## physics

A 125.0-N sign is suspended from a horizontal strut of negligible weight. The force exerted on the strut by the wall is horizontal. Draw an FBD to show the forces acting on the strut. (Do this on paper. Your instructor may ask you to turn in this work.)

94. ## physics

While trying to decide where to hang a framed picture, you press it against the wall to keep it from falling. The picture weights 9.5 N and you press against the frame with a force of 19 N at an angle of 30° from the vertical. What is the coefficient of

95. ## algebra 2

Use substitution to solve the system 3x + 7y = −3 (1) 7x + y = −53 (2) Find the value of x. (part 2 of 2)Find the value of y.

96. ## calculus

How do I set-up/solve this problem? Please help me. The half-life of the radioactive isotope gallium-70 is 20 minutes. If the initial amount of gallium-70 is 25 milligrams, when will 10 milligrams be left?

97. ## phy

As their booster rockets separate, Space Shuttle astronauts typically feel accelerations up to 3g, where g = 9.80 m/s2. In their training, astronauts ride in a device where they experience such an acceleration as a centripetal acceleration. Specifically,

98. ## chemistry

write the formulas of the complex ion formed between a) the ligand, Cl-, and the platinum(II) ion with a coordination number of four. b) the ligand, NH3, and the nickel(II( ion with a coordination number of six. c)the ligand, ethylenediamine, and the

I am having real trouble remembering how you can tell if a molecule is polar? Which of the following molecules is polar? NCl3, NO2, H2S, or SiH4

100. ## Algebra

Alycia's pggy bank has dimes and quarters in it. The numbers of dimes is four less than three times the number of quarters. If the total value of the coins is \$7.85, how many dimes are in the piggy bank?

101. ## math

How do I set-up/solve this problem? Please help me. The half-life of the radioactive isotope gallium-70 is 20 minutes. If the initial amount of gallium-70 is 25 milligrams, when will 10 milligrams be left?

102. ## Calculus

Assume that each of the follwing functions gives the position of an object at time t. Find the velocities indicated by setting up and evaluating a limt algebraically. (a) s(t) = 3t^2, Find v(-1). (b) s(t) = 1/t , Find v(2). (c) s(t) = square root of t,

103. ## Physics

A moving object has a kinetic energy of 188 J and a momentum with magnitude of 26.2 kg·m/s. Determine the mass of the object.

104. ## Math

Draw two line segments connecting angles of the hexagon to make four quadrilaterals...

105. ## sciencce

Mrs. Scheib was riding her bike and leaves home and rides due east for a distance of 45 km. she returns home on the same bike path. if the entire bike path takes 4 hrs what is her average speed? Is it 11.25?

John Updike's short story entitled "Son" covers four generations, correct-great grandfather, grandfather, father and son, correct? I dogpiled this and can't find anything on it. If anyone can direct me paragraph- by paragraph who is being spoken about, I'd

107. ## English

I forgot to include these last sentences. Thank you. 1)He wishes himself death, but he cannot tolerate the world’s going out (on?) without him. 8) His egotism leads him finally to self-destruction. 2) He uses four metaphors to describe life: a walking

How do you write the expression for the area of the rectangle If the length of a rectangle is two more than three times it's width,then write an expression for area of the rectangle Find the perimeter of the rectangle in problem 1.

109. ## physics

A pulley is attached to the ceiling (as shown in the figure below). Spring scale A is attached to the wall and a rope runs horizontally from it and over the pulley. The same rope is then attached to spring scale B. On the other side of scale B hangs an W =

110. ## math

Find the exact area of a circle having the given circumference What formual would i use for that?

111. ## chemistry

Im doing my lab report about steam distillation? and its asking me how i can tell if the two compounds i steam distilled are pure. but im not sure how to tell? i mean is the volatile or the nonvolatile compound the pure compound? or maybe the boiling point

112. ## math

Explain how you can multiply 3 times 24 by using arrays. Then give the product.

113. ## calculus

Please help me? ln(x+1)-ln(x-2)=ln(5) 1. Solve equation by setting up algebraically. 2. Use appropriate properties of Logarithm to reduce the number of logarithmic terms to only one. 3. Solve logarithmic equation.

114. ## Chemistry

determine the mass of sodium chloride produced when chlorine reacts with 0.29 g of sodium iodine in a single replacement reaction

115. ## physics

A man lifts a 3.1 kg stone vertically with his hand at a constant velocity of 2.1 m/s. What is the magnitude of the total force of the man's hand on the stone?

117. ## Probability & Stats

what is the probability that no two students will have the same birth date in a size of 60 class

118. ## calculus

in a time of t seconds, a particle moves a distance pf s meters from it's starting point, where s=3t^2 Find the ave velocity between t =1 and t=1+h if.... a) h=.1 b)h+.01 c)h=.001 Which approximation is closest to the EXACT derivative at ...t=1? Estimate

119. ## math

I do not know how to answer this question. Would someone please help me with each of the four question below? Thank you. Question 1. Write the sample space for the outcomes of tossing three coins using H for heads and T for tails. Question 2. What is the

120. ## physics

Stand on a 200 meter high building and, at noon, drop a ball. At what time does it hit the ground

121. ## Human Resource Management

What are the seven major decision points involved in job analysis of HR selection purposes? How do you conduct a job analysis for a team job in which the team member is asked to play multiple roles, be cross-trained, and perform different tasks based upon

122. ## Office Management

One taxicab charges 75 cents for the first quarter-mile and 15 cents for each additional mile. The competing taxi company charges \$1.00 for the first quarter-mile and 10 cents for each additional mile. 1. what distance would produce the same fare for the

123. ## Maths

Hi I am really sorry I now people have already attempted to help me with this one already, however I am still not able to understand, I really have not done a lot of these equations and am struggling. I have put a little more information down this time,

124. ## chemistry

Theres suppose to be something wrong with the formula, but i don't know what it is. Help? (NH4)3Cl2

125. ## geometry

what 3 dimensional shape has base of a triangle,4 faces,6 edges and 4 vertices?

126. ## science

if i had mixture of sodium carbonate and sand, and spilled some sodium carbonate (no sand spilled) after weighing the mixture, would the spill affect the percentage of sand or sodium carbonate when we calculate it?

127. ## physics

The mass of a robot is 5470 kg. This robot weighs 3740 N more on planet A than it does on planet B. Both planets have the same radius of 1.33 107 m. What is the difference MA - MB in the masses of these planets?

128. ## Chemistry

how many liters of oxygen are necessary for the combustion of 425 g methane assuming the reaction takes place at STP

129. ## Physics

Three masses, M1= 4.1 kg, M2= 4.1 kg, and M3= 6.7 kg are made of the same material. They are on a horizontal surface and connected by massless strings. The system accelerates to the right at 2.47 m/s2 due to an external force F pulling on M3. Given that T1

130. ## Finance Homework

If you deposit \$2,000 in a bank account that pays 9% interest annually, how much would be in your account after 14 years? Round your answer to the nearest cent.

131. ## Chemistry

Write the correct chemical formula for barium nitrate. What is the ratio of barium ions to nitrate ions?

132. ## commission rate

a salesperson earns 150 commission selling 3,000 worthof television sets. what is the commission rate?

133. ## Physics

A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the field is changing, so that an emf of 0.93 V and a current of 2.7 A are induced in the coil. The wire is the re-formed into a single-turn square coil, which

134. ## Science

accelerates from 15 m/s to 30 m/s in 3.0 s. What is the car's acceleration?

135. ## Physics

A 74.0 kg ice skater moving to the right with a velocity of 2.90 m/s throws a 0.15 kg snowball to the right with a velocity of 23.2 m/s relative to the ground. (a) What is the velocity of the ice skater after throwing the snowball? Disregard the friction

This is a customer type of question..I was wondering..for a while i couldn't post questions...why?

137. ## ALGEBRA

A)HOW FAR IS THEBOAT FROM THE BASE OF THE CLIFF? B) IF AFTER 10MIN THE BOAT HAS SAILED 1KM AWAY FROM THE CLIFF WHAT IS THE NEW ANGLE OF DEPRESSION OF THE BOAT ? C) HOW FAR IS THE BOAT FROM THE BASE OF THE CLIFF AFTER 45MIN?

138. ## British Literature

My class is reading from the Canterbury Tales from the prologue. I have to read the Manciple part. Our teacher wants us to write a paragraph about our character. I'm not sure what she's askiing for. I guess I have to research the manciples appearance,

139. ## notation

precent notation of 5/8

140. ## chemistry

Aspirin is synthesized in a reaction with a theoretical yield of 0.728 moles of aspirin. What is the % yield of 1.26 g of aspirin is recovered MW of aspirin is 180.15 thank you so much!

141. ## physics

Consider the electric field created by a very long charged line of negative linear charge density -2.50 nC/m. A small positive point charge of 12 mC moves from a distance of 7 cm to a distance of 18 cm. In mJ, how much work is done by the electric field?

142. ## physics

A piston, A, as shown below, has a diameter of 0.54 cm. A second piston, B has a diameter of 3.8 cm. Determine the force, F, necessary to support the 500.0 N weight in the absence of friction.

143. ## chemistry

How can you tell if two compounds that you steam distilled are pure?

144. ## biochem

If I am given a solid chemical form of both the acid and the base, how do I determine how many grams of each I need to make 1L of a 25mM Tris-HCl buffer with acid concentration of 18.94mM, and base concentration of 6.06mM?

145. ## geometry

Right triangle ABC is similar to triangle XYZ, because angle B is congruent to angle Y. If side AB equals 15 inches, side BC equals 45 inches, and side YZ equals 9 inches, then what is the length of side XY?

146. ## Physics

A piston contains 1m^3 of helium at a temperature of 250 K and an absolute pressure of 1.0kPa. The following changes are made in sequence: (a) First the volume of the piston is decreased to 0.2 m^3 while the temperature is kept constant, what is the

147. ## physics

A)If a freight train can accelerate at 0.050 m/sec^2, how far must it travel to increase its speed from 2.0 to 8.0 m/sec? B) how long will it take the train to accomplish this?

148. ## English

"Write a creative description of a journey you have taken. Focus on the means of transportation and the nuances in particular to that way of travel. Select 10 words from the speeling list to use in your piece of writing and write in the space provided on

149. ## biology

who made the first dna model and when

150. ## History

How did the nature of slavery, as recognized in Europe and Africa prior to 1600, dramatically transform and evolve during the Atlantic slave trade? Discuss the roles of Europeans, British Colonists, and West Africans in the trade, the fundamental changes

151. ## Chemistry

F2 (g) 2 F (g) A 1.00 mol sample of F2 is placed in a 100. L container at 1000K. What is the pressure of the F2 before any decomposes?

152. ## oz

IT TAKES 60oz of grass seed to seed 2400ft^2 of lawn. at this rate, how much will be needed for 4400ft^2 of lawn?

153. ## grammar

complete the sentence..Athens is the ----capital. I'm looking at a map and i see it;s in Greece

154. ## Chemistry

So I have had several homework problem like this and managed to solve them easily, but these two problems I cannot get the correct answer for. Using a Table of thermodynamic data, calculate the change in Gibbs free energy for each of the following

155. ## math

Ms Billets used 1 yard of ribbon to make a dress for a doll. Write two equivalant fractions to show what fraction of ribbon that she bought she used for the dress. she bought 4 yards.

156. ## science

Need to prepare a lab that requires 1000ml of 1.0M HCl. You find some 3 M HCl to work with. What do you need and how would you work it out?

157. ## physics

a speeder with unknown velocity passes a police car.the policr car starts to accelerate at a rate of2.2 m/s/s in the direction of the speeder as soon as the speeder passes.the police car reaches the same velocity as the speeder after he travelled 715 m.

158. ## Chemistry

A student finds that 1.00 g of a monoprotic acid, HA , requires 50.0 ml of 0.100 M KOH to neutralize it. What is the molar mass of the acid?

159. ## Chemistry-help needed

Can we use an AR grade chemical for UV spectrometric analysis? Or is it a must to use a chemical that is specially designated (SpectrAR grade) for UV analysis?

160. ## Calculus

So, I need to graph (with my calculator) this out, and then find the area, and finally the volume. y=(x-1)^1/2, y=0, x=2, x=5; about the x-axis I ended up with some crazy answer like 15π/2, and I believe that's incorrect (but it might be right, idk). Any

161. ## Physics

Is it true that a drop of water can pass through a solid travelling by 1800m/s2?

Why is water essential to life?

163. ## maths

how much must i deposit today so that i can have 4700 in tow years time if the bank pays 5% compound interest yearly

164. ## Math

Use the sum or difference identities to find the exact value of each trigonometric function. sec pi/12 Thanks :)

165. ## Geography

What happens to temperature and precipitation as one moves inland and away from water bodies? I know that land heats and cools faster than water bodies.

166. ## Chemistry

determine the mass of sodium chloride produced when chlorine reacts with 0.29 g of sodium iodine in a single replacement reaction

167. ## Calculus

Find the equation of the plane through (1,2,-2) that contains the line x = 2t, y = 3 - t, z = 1 +3t

168. ## Math

Three(cylindrical) steel drums are put together and a steel band is wrapped tightly around the three drums. If the radius of each drum is 2 feet, what is the length of the steel band? (The view of the drums below is from the top, or end of the drums.) The

169. ## algebra

. If you enter Interstate 40 at mile marker 23 in Sayre, Oklahoma, how far would you need to travel to reach mile marker 125 in El Reno, Oklahoma? After reaching El Reno, you might worry that your vehicle is running low on fuel. You know that your vehicle

170. ## Chemistry II class

Homework due tomorrow. I have no tutor but need answers! Cyclohexene with CH3 subscript again 3 bwecomes something Then that added to HNO (subscript 3) becomes somethings (minor/major) those added to SO (subsript 4) with Sulfuric acid as a catalyst become

171. ## Science

Can flying fish communicate and if so,how?

172. ## Chemistry

F2 (g) 2 F (g) A 1.00 mol sample of F2 is placed in a 100. L container at 1000K. What is the pressure of the F2 before any decomposes?

173. ## geometry

Two rectangular boxes are similar. One box has the length of 24 inches. and a width of 9 inches. If the other box has a length of 16 inches., what is its width?

174. ## physics

A cart of mass m = 0.84 kg on a track undergoes a collision with another cart. It's velocity before and after the collision, vi and vf is measured and found to be vi = 1.32±0.04 m/s and vf = 0.30±0.04 m/s. If the collision lasts a time interval Δt =

Hello I'm reposting this question because right now it's at the bottom and I don't think I will get an answer. Assume that the follwing function gives the position of an object at time t. Find the velocity indicated by setting up and evaluating a limt

176. ## Discrete Math

f: A→B, g :B→A Is g ° f defined? If so, what is its domain and range? Any suggestions?

177. ## geometry

In the figure below, AC = 2. What does BD equal?

178. ## physics

A 6.15 kg block slides 1.49 m down a frictionless incline that makes an angle of 60.0° with the horizontal. What is the total work done on the block

179. ## calculus

Find the derivative of the following functions: x^7+2/(x^1/2) also (x^9-x^1/7)7^x

180. ## Math

Ms. Billets used 2 feet of yarn to make an ornament. Write this lenth as a fraction of the total lenghth of yarn she bought. Is this fraction in simplest form? Explain. Ms. billets bought a total of 6 feet of yarn.

181. ## Chemistry

A student finds that 1.00 g of a monoprotic acid, HA , requires 50.0 ml of 0.100 M KOH to neutralize it. What is the molar mass of the acid?

182. ## Biomechanics

If John was pushing a 300 kg desk across the floor with a constant acceleration of 3.5 m/s squared, how much force would he have to apply to the desk to maintain the acceleration, considering the coefficient of kinetic friction is 0.60?

183. ## World History

How did Muslim merchants influence the devolopment of trade in Africa?

184. ## math

you gave this answer toa problem If you received a \$10 reward, then you spent between \$50 and \$99.99 If you received a \$20 reward, then you could have spent \$100, \$125, or \$149.99. If your purchase is \$98, then you'd be better off spending \$2 more, so that

If you enter Interstate 40 at mile marker 23 in Sayre, Oklahoma, how far would you need to travel to reach mile marker 125 in El Reno, Oklahoma? After reaching El Reno, you might worry that your vehicle is running low on fuel. You know that your vehicle

186. ## Psy 285

Discuss how confirmation bias can influence perceptions and how some beliefs can actually generate their own confirmation

187. ## English

I forgot to include these very few lines. Thank you very much for helping me. 1) Anyone who doesn't know the difference between opposites must be associated with evil. 2) We undestand that the witches have the power of knowing something about the future

188. ## maths(algebra)

can u plz solve ma algebric equation: 3x-4/2=3(x-3)-2 i shall be very thankful to you

189. ## math

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

190. ## math

whats the formula for finding the radius when givin the circumference?

191. ## world history

some parts of spain remained under muslim control for how many years

192. ## chemistry

how much heat (in KJ) is released when 2.50 mols of NaCl is dessolved in water?

193. ## language arts

Diagram Either the suspect will come out or the police will go after him.

194. ## college algebra

would this be foil method? If so how do I solve. x-1 x-5 = x+3 x+4

195. ## calculus

Find the derivate of the function f(x) = 2x2 + 23x + 5 What is the value of this derivative when x = 19

196. ## Personalities

What is it like for a person to handle working with multiple personalities in a group?

197. ## physics

A cart of mass m = 0.84 kg on a track undergoes a collision with another cart. It's velocity before and after the collision, vi and vf is measured and found to be vi = 1.32±0.04 m/s and vf = 0.30±0.04 m/s. If the collision lasts a time interval Δt =

198. ## trig

A BILLBOARD PAINTER HAS BEEN ASSIGNED THE TASK OF CHANGING THE ADVERTISMENT ON A 20-FT BILLBOARD,THE BOTTOM OF WHICH IS 15FT OFF THE GROUND.AFTER EXAMINING THE SITE, SHE IDENTIFIES TWO AREAS ON THE GROUNG UNDER THE SIGN THAT ARE STURDY ENOUGH TO SUPPORT

199. ## math

evaluate 15 x 4 2/3

200. ## physics

there is any peak shift between bulk and nano materials in xrd.

201. ## Chemistry

when 0.154 g of sulfur is finely grounded and melted with campor, the freezing point of the campor is lowered by 5.47 celsius. A)what is the molecular weight of sulfur? B)what is its molecular formula? fp of campor: 178.4 kf of campor: 40

202. ## clothing and textiles

what are the three types of pleats

203. ## Statistics

Which of the following is true of the association between brand loyalty and attitude toward the brand? As brand loyalty increases, attitude toward the brand increases There is a moderately strong relationship between the two variables . The relationship

204. ## physics

a police car is cruising on the right lane at 25 m/s (meters/sec.). A motorcycle, on the left lane, passes the police car at a constant 35 m/s. The police officer reacts fast and accelerates at a constant 5 m/s^2. (a)When does he catch up? (b)What was his

205. ## math

a car drives around a circular track 3 times if the track has a radius of 0.5 miles , how far did the car travel in total?

206. ## Chemistry

F2 (g) 2 F (g) A 1.00 mol sample of F2 is placed in a 100. L container at 1000K. What is the pressure of the F2 before any decomposes?

207. ## calculus

Find the derivate of the function f(x) = 2x2 + 23x + 5 What is the value of this derivative when x = 19

208. ## A&P

Situation: You need to step up on a step to reach an object on a high shelf over your head. Your starting point should be anatomical position and your finishing point should be the position you are in once your hand has reached the object overhead. (Part

209. ## math

The distance between (0,0) and (0,1) on a certain coordinate plane is 1cm. The distance between (0,0)and (1,0) on that same coordinate plane is 1cm. What is the distance between (0,0) and (1,1). Explain the answer

what are the atributes of tomorrow's leaders according to linda hill?

211. ## math

Use the discriminant to determine whether the following equations have solutions that are: two different rational solutions; two different irrational solutions; exactly one rational solution; or two different imaginary solutions. x^2=3x-6

212. ## Chemistry

what two molecules (separately) can be catalyzed with HCL to get 1 Chloro-1 Methylcyclohexane?

213. ## MATH

FIND DECIMAL NOTATION OF 92 1/8

214. ## English

I forgot to include these sentences. Thank you. 1)Macbeth has almost forgotten the taste of fear. There was a time in which would have been alarmed or scared by a night shriek and the hair on his skin would stand if he heard a ghost story. 2) He

215. ## English

Can you please check these sentences I am not sure of. Thank you. 1)The play opens with a meeting of the three witches in some sort of deserted place. The stage is empty: there are no trees, no houses,no people, absolutely nothing. 2) Shakespeare has

216. ## socioloty 1010

the notion of social evolution served the interests of European powers as they expanded their colonial empires?

217. ## Science followup

I posted a question on flying fish and Sra answered me this morning, and she sent me a browse that she typed in but nothing there was helpful...Does anybody else know if flying fish can communicate and if so how?..Thank you!

218. ## math

Could someone please describe two main differences between classical and empirical probabilities.

219. ## Algebra

Evaluate the exprestion: 2(3x+1)/-4 for each value of "x". A.x=9 B.x=2 C.x=-1 D.x=14

220. ## math

A=___,b=8.1mm,h=16mm?

221. ## calculus

f(x)=x^2-3x+1/x^2

222. ## English

I left out these few statements on the themes I would like you to check. Thank you very much. 1.Macbeth is the shortest of S’s tragedies; it is simple in its plot but complex in its psychological analyses of what takes place in the mind of the criminal.

223. ## Chemistry

A sample of gas is placed in a container at 25 degrees C and 2 atm of pressure. If the temperature is raised to 50 degrees C, what is the new pressure?

224. ## calculus

Consider f(x)=3*2^x find the rate of change between X=1 and X=4

225. ## COM220

Create a full-sentence that includes effective arguments and counter arguments to support my thesis people do not understand the importance of staying in school

226. ## social studies

how did the spanish differ from the portugese in searching for a route to asia

227. ## History

What is Republicanism? Give an example.

I keep asking ...Ms.Sue, could you possibly help? Can flying fish communicate and how?

229. ## English

Thank you very much for the help! Here is the rephrase I found in the sparknotes. 1) Shakespeare has unhooked his work from time and place. The witches tell us that the next time they meet, it will be with Macbeth, and that this will occur before the sun

230. ## History

Which city-state was better: Sparta or Athens

231. ## math

if a stone is tossed from the top of a 330 meter building, the height of the stone as a function of time is given by h(t)=-0.8t^2-10t+330, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground?

232. ## Chemistry-pls help

Can we use an AR grade chemical for UV spectrophotometric analysis? Or is it a must to use a chemical that is specially designated (SpectrAR grade) for UV analysis?

Why can high blood viscosity have negative effects? Also, name the medical condition that people can develop with high blood viscosity.

234. ## science check plzzzzzzzzzz

if your computer uses 2.5A at 120V, how much will it cost to use the computer for 4 hours a day, seven days a week for two weeks? assume that the cost of electricity is \$0.09 for every kWh*h of energy. i solved it like this way could you check of i got it

235. ## math

Convert 0.925 g/l to mg/100ml?

-7x+7y=7 2x-2=-18 how many solutions does this system have ?

principles of designing visual aids for business report.

239. ## chemistry

Given: v with a power of 1 is 50 Ml and t with a power of 1 is 30 degrees c. what is the volume with a power of two when T with a power of 2 is 20 degrees C

240. ## Literature 7

Another question on Black Beauty...What breed is he?

241. ## sociology 1010

folkways,cores, and taboos are all norms, yet they vary in importance?

242. ## calculus

tangent line and normal line of y=(sqrtx)/(x+1) when p=(4,2/5)

243. ## English

How would I do a web diagram on the following sentence for adjectives? My eleven brothers received an abundant supply of food.

244. ## History

What caused the US to enter the Spanish American War and WWI?

245. ## Geography

Why is there 12 hours of daylight all year at Quito? I think it's because it's on the equator, but I don't really get it

246. ## physics

a .250kg block of aluminum is heated to 100 C and then dropped into .60 kg of water that is initially at 20C. What is the equilibrium temperature of the system? The specific heat of aluminum is .22 kcal/kg C

What does it mean to lead by example?

248. ## science

A fire is burning under point C on a metal rod.After two minutes above the fire,which point is the hottest?Point C,W,X,Y or Z

249. ## Math

How many possible license plates are possible in which two letters are followed by at least 1 digit and no more than 4 digits?

250. ## AN UNCERTAIN HORIZON

Under Franklin Roosevelt's Good Neighbor policy, A. Cordell Hull favored continued military interventions in Latin America. B. American commerce with Latin America increased, but only slightly. C. the Platt Amendment was rescinded. D. the collective

251. ## nutrition

Could someone direct me to some websites that list the nutritional needs for men and women? Thanks

252. ## geometry

whats the angle of a perpendicular bisector if the angles are x-2 and the other angle is 80 degress?

253. ## math

Evaluate 15 X 4 2/3

254. ## Chemistry

Homework due tomorrow by 5pm - Asks; what can be catalyzed with Br (subscript 2) and result in 1,2 dibromo 3-methylbutane?

255. ## Chemistry

Three double bonds in Cyclohexene (CH subscript 3) 3 (another subscript) CCl with AlCl (subscript 3) as a catalyst results in what? Then, that added with HNo (subscript 3) and sulfuric acid as a catalyst becomes one minor and one major result. What are

what are parts of a poem?

257. ## science

could someone pleassssse help me answer these questions? do we always see the same side of the moon and how do you know for sure? if the moon rotated just asa quickly as earth , would we see the same sides of the moon from earth?explian.

258. ## physics

If four containers, 10ml to 50ml,have the same temperature, which has the greatest thermal energy?

259. ## BJ MATH

A football player completed 56.7% of his passes last season. he attempted 224 passes. how may did he complete?

260. ## Chemistry

Solve for the missing compound in the balanced equation: 3PbO + X ----> 3Pb + N2 + 3H2O please help .

261. ## Intermediate Algebra

Solve for X (1/8)=(2/3)x-1/2

262. ## Government

Describe 4 reasons that led to demands for government reform in 1830's Upper Canada. WOuld one of them be that the government was not being fair. with the land, property, taxes, and stuff?

what is 3 1/4 plus [3 1/4 plus 5 1/5]

264. ## ecology

Which organism belongs to a species that is likely to undergo genetic changes in shortest period of time? bacterium, fish, plant,or bird?

265. ## History

What creatures did the europeans introduce in the new world?

266. ## sceience

diffence between dipole interactions and vanderwaal forces

267. ## science check plzzzzzzzzzz

if your computer uses 2.5A at 120V, how much will it cost to use the computer for 4 hours a day, seven days a week for two weeks? assume that the cost of electricity is \$0.09 for every kWh*h of energy. i solved it like this way could you check of i got it

268. ## math

Find the added expense and the actual yearly rate of interest for the following. A food processor for \$119.50 cash, or \$5.00 down and \$9.00 per month for 15 months.

would being accepted into a state-wide orchestra be considered a leadership service? because it helped inspire others...

270. ## history

what does the author of "the real story of jamestown" argue is the most tremendous change in the world next to the extinction of the dinosaurs?

271. ## Personal Finance

From the throne room in your base station on Alpha Centauri-in the video game Galactic Empire-you dispatch your loyal, obedient minions to use their diligence and skill to loot the universe on your behalf and return with the treasure for its accounting and

Find k for which the limit below exists, and find the limit. lim x->1 (2x^2 + kx +4)/(x-1) Please show me how to do both procedures. Thanks

273. ## math

13 1/3 divide by 6 2/9 = 40/3 x9/56 ANSWER IS 2 1/7

274. ## math

Ms. Billets used 8 feet of string to tie together newspapers to take to the recycling center. What fraction of the string she bought does she have left? She bought a total of 12ft of string.

275. ## math

In the trapezoid above, base R is 16 units and base S is 24 units. The trapezoid has a height of 9 units. What is the area of the trapezoid?

276. ## Math

How do you find the expression for the perimeter of the flag One side of a triangular flag is two more than five times tue third side

277. ## math

6.375 g/dl convert to g/100ml?

278. ## social studies

what is columbias continant

279. ## P I

the amount in a savings account increased from \$60 to \$84. what i sthe precent increase?

280. ## To helper -

Did you get my latest email today?

what are parts of a poem?

282. ## chemistry

A sample of 0.50 moles of gas is placed in a container of volume of 2.5 L. What is the pressure of the gas in torr if the gas is at 25 degrees C ? Show work ?

283. ## human services

I need help finding information that are facts instead of opinions on: How can diet and exercise stop the biologically driven aging process?

284. ## algebra

factor 1 36x^12 40x^8

285. ## language arts

can you give composition based on a car

286. ## english

What can hold six gallons of water, be found in a survival kit, and be the size of my foot? (I wear a size 6 to 7.5 in shoes)

information that should be excluded from c.v. When u applying to company

288. ## communication

question to ask yourself in dertemining wheather or not a message is ethical

289. ## U.S Government

how did the colonists governmental experience influence the constitution?

290. ## history

when did king louis(married to queen eleanor) die?

291. ## Literature 7

What page exactly does it say what Black Beauty, the horse, looked like? I can't find it.

292. ## maths

what is the negative numbers in context