# Questions Asked onJanuary 9, 2011

1. ## Physics (Help!)

You throw a glove straight upward to celebrate a victory. Its initial kinetic energy is K and it reaches a maximum height H. What is the kinetic energy of the glove when it is at the height H/2?

2. ## Chemistry

It turns out that the Van Dar Waals constant b is equal to four times the total volume actually occupied by the molecules of a mole of gas. Using this figure, calculate the fraction of the volume in a container actually occupied by Ar atoms: a) at STP b)

3. ## Chemistry

Calculate the pressure that ccl4 will exert at 40 of 1.00 mol occupies 28.0 L, assuming that (a) CCl4 obeys the ideal-gas equation (b) CCl4 obeys the Van der Waals equation. (a) PV = nRT P = nRT / V (b) (P + n^2a/V^2)(V - nb) = nRT CCl4 = a = 20.4

4. ## Science

What occurs when a substance melts? 1) It changes from solid to liquid, and heat is absorbed. 2) It changes from solid to liquid, and heat is released. 3) It changes from liquid to solid, and heat is absorbed. 4) It changes from liquid to solid, and heat

5. ## physics

The balance wheel of a watch oscillates with angular amplitude 1.7π rad and period 0.64 s. Find (a) the maximum angular speed of the wheel, (b) the angular speed of the wheel at displacement 1.7π/2 rad, and (c) the magnitude of the angular acceleration

6. ## ChemII

A saline solution is 0.9% NaCl. What masses of NaCl and water would be required to prepare 50. L of this saline solution? Assume that the density of water is 1.000g/mL and that the NaCl does not add to the volume of the solution.

7. ## Science-Physics

You push a 67 kg box across a floor where the coefficient of kinetic friction is uk = .55. The force you exert is horizontal. (a) How much power is needed to push the box at a speed of .50 m/s? (b) How much work do you do if you push the box for 35 s?

8. ## chemistry

Water is added to 4.267 grams of UF6. The only products are 3.730 grams of a solid containing only uranium, oxygen and fluorine and 0.970 gram of gas. The gas is 95.0% flourine, and the remainder is hydrogen. From data determine the empirical formula of

9. ## Chemistry

Concentrated sulfuric acid is 18.4 molar and has a density of 1.84 grams per milliliter. After dilution with water to 5.20 molar the solution has a density of 1.38 grams per milliliter. This concentration of H2SO4 is often used in lead storage

10. ## Chemistry

which substance has a definite shape and a definite volume at STP ? (1)NaCl(aq) (2)Cl2(g) (3)CCl4(l) (4)AlCl3(s) is it 4 because its a solid? Am i right ?

11. ## thermodynamic

Energy is added to a piston-cylinder arrangement. The piston is withdrawn in such a way that the temperature remains constant. The initial pressure and volume are 200 KPa and 2m^3, respectively. If the final pressure is 100 KPa, determine the work done by

12. ## physics

A cat chases a mouse across a 1.7 m high table. The mouse steps out of the way, and the cat slides off the table and strikes the floor 2.1 m from the edge of the table. The acceleration of gravity is 9.81 m/s2 . What was the cat’s speed when it slid off

13. ## Spanish

when would i need to use the preterite

14. ## math

Dents and Dings Auto Body buys paint with a list price of \$29,000. If the supplier extends trade discounts of 30/35/20, what is the trade discount amount?

15. ## algebra (inequalities)

a weaver spends \$420 on supplies to make wall hangings and plans to sell the wall hangings for \$80 each. a. write an inequality that gives the possible numbers of (w) wall hangings the weaver needs to sell in order for the profit to be positive b. what are

16. ## Geometry

The diagonals of a rectangle are 12 inches long and intersect at an angle of 60 degrees. Find the perimeter of the rectangle.

17. ## Physics

A player strikes a hockey puck giving it a velocity of 47.673 m/s. The puck slides across the ice for 0.175 s after which time its velocity is 46.473 m/s. The acceleration of gravity is 9.8 m/s2 . The mass of the puck is 185 g. If the puck strikes the

18. ## physics

A tightly stretched "high wire" is 44 m long. It sags 3.8 m when a 56 kg tightrope walker stands at its center. What is the tension in the wire? 1 NIs it possible to increase the tension in the wire so that there is no sag? so far i know you do the inverse

19. ## physics

Two masses are suspended from a pulley as shown in the figure below (the Atwood machine). The pulley itself has a mass of 0.20 kg, a radius of 0.15 m, and a constant torque of 0.35 m·N due to the friction between the rotating pulley and its axle. What is

20. ## Physics

An airplane is flying in a horizontal circle at a speed of 105 m/s. The 76.0 kg pilot does not want the centripetal acceleration to exceed 6.35 times free-fall acceleration. a) Find the minimum radius of the plane’s path. Answer in units of m.

21. ## physics

A 89 kg solid sphere with a 12 cm radius is suspended by a vertical wire. A torque of 0.37 N·m is required to rotate the sphere through an angle of 0.93 rad and then maintain that orientation. What is the period of the oscillations that result when the

22. ## chemistry

Na2CO3 + 2HNO3 -> 2NaNO3 + H2O + CO2 Time(s) Mass of Flask Plus Contents (g) 0 150.50 10 149.30 20 148.10 30 148.10 a)calculate the average overall rate of consumption of sodium carbonate in mol/min. b)The mass of sodium carbonate consumed in the reaction

23. ## MATH

APPLY THE RULE [1.5X, 1.5Y] TO THE VERTICES OF TRIANGLE TO GET TRINGLE PQR. COMPARE THE CORRESPONDING MEASUREMENTS[SIDE LENGTHS, PERIMETER, AREA, ANGLE MEASURES] OF THE TRIANGLE

24. ## Physics

What would be the appearance of the speed-time curve if the fallng body where so light that the effect of air friction could not be neglected?

25. ## AP Psychology

how does top-down processing leave us vulnerable to illusions? what is the role of attention in behavior? How does experience and culture influence perceptual processes? (ex: perceptual set, context efffects) how do common sensory disorders, like vision or

26. ## Chemistry

the difference between the boiling point and the freezing point of pure water at standard pressure is (1)32 K (2)273 K (3)100 K (4)373 K

27. ## Chemistry

which substance takes the shape of and fills the volume of any container into which it is placed ? (1)H2O (l) (2)CO2(g) (3)I2(s) (4)Hg(l)

28. ## math

find an equation of the line containing the given pair of points. Express your answer in the form x =a,y=b or y=mx+b (-1,_1) and (9,9) what is an equation of the line?

29. ## Math

What is 58.8 to the nearest tenth?

30. ## Math

How many five-digit integers are perfect squares?

31. ## physics

Two masses are suspended from a pulley as shown in the figure below (the Atwood machine). The pulley itself has a mass of 0.20 kg, a radius of 0.15 m, and a constant torque of 0.35 m·N due to the friction between the rotating pulley and its axle. What is

32. ## physics

Two masses are suspended from a pulley as shown in the figure below (the Atwood machine). The pulley itself has a mass of 0.20 kg, a radius of 0.15 m, and a constant torque of 0.35 m·N due to the friction between the rotating pulley and its axle. What is

33. ## chemistry

What are the solute particles present in aqueous solutions of each compound? (Select all that apply.) acetic acid

34. ## Physics

A simple harmonic oscillator consists of a block of mass 1.70 kg attached to a spring of spring constant 390 N/m. When t = 2.30 s, the position and velocity of the block are x = 0.173 m and v = 2.830 m/s. (a) What is the amplitude of the oscillations? What

35. ## Chemistry

As a substance changes from liquid to gas, the average distance between molecules (1) decreases (2)increases (3) remains the same

36. ## physics

A cat chases a mouse across a 1.7 m high table. The mouse steps out of the way, and the cat slides off the table and strikes the floor 2.1 m from the edge of the table. The acceleration of gravity is 9.81 m/s2 . What was the cat’s speed when it slid off

37. ## World History

How did the Europeans establish and maintain their trading empires with Asia? ? idk help

38. ## Relative velocity

A pet-store supply truck moves at 25.0 m/ north along a highway. Inside, a dog moves at 1.75 m/s at an angle of 35.0 degrees east of north. What is the velocity of the dog relative to the road?

39. ## chemistry

In general, reaction rates double when the temperature is increased by 10ºC. The temperature of a reaction is increased by 40ºC. The rate of the reaction will increase by a factor of ____? is it 16?

40. ## Chemistry

What is the molality of a solution of sucrose(molar mass=342) dissolved in water that is 25% sucrose by mass?

41. ## math

Vanna Black pays money for vowels. If consonants are worth nothing and the following words are worth the following amounts, then find the value of each vowel. All vowels are worth the same amount in each but each vowel has a different value. Audacious=\$260

42. ## geometry

The rectangle ABCD is rotated about the side AB. Find the volume of the solid defined by this rotation. AB = DC = 4cm AD = CB = 2cm

43. ## Geometry

The sum of the squares of the measures of the sides of a square is 256. Find the measure of a diagonal of the square.

44. ## math

i am a 2-digit decimal. my tenths is twice my hundredths. the sum of my digits is 12. what number am i.

Ninja usually weighs 80 kg. He ate 5 kg of cookies over the Holiday Break: a. What is his weight? and B. How can ninja use physics to lose weight?

46. ## physics

a physical pendulum consists of a uniform solid disk (of radius R = 42.0 cm) supported in a vertical plane by a pivot located a distance d = 13.0 cm from the center of the disk. The disk is displaced by a small angle and released. What is the period of the

47. ## physics

A 14.0 kg cart is moving with a velocity of 7.25 m/s down a level hallway. A constant force of -10.0 N acts on the cart, and its velocity becomes 3.20 m/s. Assume that air resistance is negligible. (a) What is the change in kinetic energy of the cart? (b)

48. ## physics

A small turbo-prop commuter airplane, starting from rest on a Tallahassee airport runway, accelerates for 21.0 s before taking off. Its speed at takeoff is 56.0 m/s (125 mi/hr). Calculate the acceleration of the plane, assuming it remains constant. Express

49. ## AP Psychology

A classmate beleives alcohol, marijuana and cocaine all have similar effects and should be legalized. Carefully evaluate the strenghts and weaknesses of your classmates position. are they asking to list the positive side effects and negative effects of the

50. ## physics

A 0.57 kg block oscillates back and forth along a straight line on a frictionless horizontal surface. Its displacement from the origin is given by x = (13 cm)cos[(20 rad/s)t + π/2 rad] (a) What is the oscillation frequency (in Hz)? (b) What is the maximum

51. ## Math

How many different paths will spell the word BINOMIAL in the following arrangement(moving diagonally downwards to the left or right)? B I I N N N O O O O M M M I I A L L My Answer: Starting from B using Pascal's Triangle B 1 1 1 2 1 1 3 3 1 4 6 4 10 10 20

52. ## Chemistry

If you start with ten grams of lithium hydroxide, how many grams of lithium bromide will be produced? Round to the nearest tenth. Don't forget the units.

53. ## physics

A cat climbs 20 m directly up a tree. What is the horizontal component of the cat’s displacement? Answer in units of m.

54. ## algebra

a pair of skiis in a set of bindingd=s together cost \$494. Find the price of each if the skiis cost \$10 less than 6 times as much as the bindings?

55. ## physics

A car has an acceleration of 2 m/s2, what does this tell you about the velocity of the car . Explain what is meant by an acceleration of -2 m/s2.

56. ## high school biology

2. Discuss the implication of pollution of the marine and wet land environment. Sight examples from 2 named caribbean countries.

57. ## reaction rate help

In general, reaction rates double when the temperature is increased by 10ºC. The temperature of a reaction is increased by 40ºC. The rate of the reaction will increase by a factor of ____? is it 16?

58. ## Math

A person is standing next to a flag pole.The person is 6ft tall.She casts a shadow 10 ft long.The flag pole casts a shadow of 45 ft long.How tall is the flag pole.

59. ## geometry

the length of a diagonal of a square is 22 square root of 2 millimeters. Find the perimeter of the square.

60. ## Chemistry

which phase change is endothermic ? (1)gas-->solid (2)gas-->liquid (3)liquid-->solid (4)liquid-->gas

61. ## algebra (inequalities)

your club is in charge of making pins that students can buy to show their school spirit for the upcoming football game. you have made 225 pins so far, and you only have 120 minutes left to make the rest of the pins. you need to make at least 400 pins. a.

62. ## physics

An autographed baseball rolls off of a 0.63 m high desk and strikes the floor 0.46 m away from the desk. The acceleration of gravity is 9.81 m/s2 . How fast was it rolling on the desk before it fell off? Answer in units of m.

63. ## algebra

in 1992, the life expectancy of males in a certain country was 67.5 years. In 1997, it was 69.9 years. let E represent the life expectancy in years t and let t represent the number os years since 1992. The linear function E(t) that fits the data is

64. ## English

I need help figuring out some irony in the short story "Little Benjamin" by Laura E. Richards. I don't quite understand it. Please help?

65. ## science

tThe bob of a pendulum swings through a circular arc of constant radius. At what point of the swing does the cord holding the bob exert the greatest entripetal force on it?

66. ## Trigonometry

Two sides of a triangle are 5 and 8 units respectively. If the included angle is changing at rate of one radian, at what rate is the third side changing when the included angle is 60 degrees?

67. ## Chemistry

The molecular formula of a compound containg only carbon and hydrogen is to be determined. When a sample of the compound is burned on oxygen gas, 7.2 grams of water and 7.2 liters of carbon dioxide gas are produced(measured at STP). When 0.600grams of the

68. ## physics

A pelican flying along a horizontal path drops a fish from a height of 5.0 m. The fish travels 8.5 m horizontally before it hits the water below. The acceleration of gravity is 9.81 m/s2 . a) What was the pelican’s initial speed? Answer in units of m/s.

69. ## geometry

how do i find the radius of the largest circle that can be cut from a square piece of paper with a diagonal of 20cm?

70. ## MATH 12 HELP!!

a pizza store offers 15 different toppings on its pizzas. what is the probability that 4 randomly selected toppings will include salami and green pepper?

71. ## physics

Block A (60 N) and block B (40 N) are connected by a massless cord and are AT REST. Given ìs = 0.8. The friction on A is : 1. 40 N 2. 0 N 3. 24 N 4. 48 N 5. 20 N 6. 60 N 7. 16 N

72. ## Chemistry

A student dissolves 2.57 grams of iodine [molar mass= 257]in 10.0 grams of carbon tetrachloride [kb = 5.03C/m]. The normal boiling point of carbon tetrachloride is approximately 77degreesC. What is the approximate boiling point of the solution above?

73. ## Chemistry

when the beaker has rated capacity of 10 ml, does it mean that it has to be filled to the brim?

74. ## Chemistry

Water is added to 4.267 grams of UF6. The only products are 3.730 grams of a solid containing only uranium, oxygen and fluorine and 0.970 gram of gas. The gas is 95.0% flourine, and the remainder is hydrogen. From data determine the empirical formula of

I don't understand this qestion. a firm wants to understand the attitudes of it's minority managers toward it's system for assessing management preformence. below ia a lis of all the firms managers who are members of minority groups. use table b at line

76. ## physics

A 1.o kg cart A and 2.0 kg cart B are at rest on a frictionless table. A cord and a spring of negligible mass join the two carts. The spring is compressed 0.060m between the two carts until the spring's potential energy is 12 Joules. When the cord is cut,

77. ## English - Native speakers

Hello! How do you say in English "Sprachliches Gymnasium"? In other words a high school which program is focused more on foreign languages.

78. ## Chemistry

using the balanced reaction equation for the combustion of propane, determine the number ofmoles of oxygen that would react with.50 mol propane and the number of moles of carbon dioxide that would be produced?

79. ## chemistry reaction rate

2NO(g) + O2(g) → 2NO2(g) + 112 kJ what do you do to increase the reaction rate? decrease in pressure or increase in concentration of NO? HELP!

80. ## english

Why did yun ok come to the mountain hermit?

asked by Interactions in english(jkbose )
81. ## Math

A mail-order company charges \$12 for each shirt. Shipping costs \$f per oder. Write a variable expression for the cost of odering x number of shirts

82. ## Physics

The 636 N weight held by two cables. The left-hand cable had tension 840 N and makes an angle of θ with the wall. The right-hand cable had tension 890 N and makes an angle of θ1 with the ceiling. a) What is the angle θ1 which the right-hand cable makes

83. ## Math

If a positive two-digit integer is divided by the sum of its digits, the quotient is 2 with a remainder of 2. If the same two-digit integer is multiplied by the sum of its digits, the product is 112. What is the two-digit integer?

84. ## Chemistry

When 2.50g of an unknown solute is dissolved in 40.0g of ethanol the solution boils at 79.4C. The normal boiling point of this substance is 78.4C and it has a kb of 1.22C/m. (a) What is the molality of this solution? (b) What is the molecular weight of the

85. ## thermodynamic

The air 10 cm diameter cylinder, as shown below, is heated until the spring is compressed 50mm. Find the work done by the air on the frictionless piston. The spring as the beginning of this process has a displacement of 0.0m with a spring constant of

86. ## science

how do we determine the identification of an unknown substance using a thermochemical test ??? i mean the procedure

87. ## Chemistry

Enriched uranium is produced via gaseous diffusion of UF6. Suppose a process were developed to allow diffusion of gaseous uranium atoms, U (g). Calculate the ratio of diffusion rates of U235 and U238, and compare it to the ratio for UF6 given in the essay.

88. ## Psychology

Can you translate this question? I do not understand what they are asking. Thank you! In what sense is the dream a reflection of Franco's level of cognitive development?

89. ## ap us history

how could secret ballots and direct primaries increase the influence of the masses in government in the late nineteenth century

90. ## English - Thiong'o Decolonising the mind

What is the main idea of Thiong'o's essay, Decolonising The Mind?

91. ## Physics

2.Using the kinematic equations, prove that if two balls are released simultaneously from a table, one with zero velocity and the other with a horizontal velocity Vox, they will both reach the ground at the same time.

92. ## physics

Block A (70 N) and block B (21 N) are connected by a massless cord and are at rest. Given ìs = 0.8. What is friction A ?

93. ## Algebra 2

One of the the zeros of the functions F(x)= x^4+2x^3-13x^2-38x-24 is x=-3, find the other zeros of the function.

94. ## math

a cab charges the following fare for ea. trip...first 1/4 mi \$2.95 for every additional 1/4 mi or part \$0.65 (a)what is the fare for a distance of 1 5/8 mi? my answer...I got \$8.85 (b) what is the fare for a didtance of 10 3/4 mi? My answer...\$30.25

95. ## Math

simifly. Use the commutative associative and distributive properties. 1. 175 + 37 + 25 2. 50(11 x 2) 3. 12/(99 can someone explain to me how to do these please?

96. ## Medical Information Management and office practice

A 67-year-old patient was admitted to the hospital on November 4 and discharged on November 18. What's the patient's length of stay? Is the answer to this question: A. 13 B. 15 C. 18 D. 20

97. ## algebra

sqrt(45)+ sqrt(20)+ sqrt(5)-sqrt(125)=?? I came up with 6sqrt5 I know it's wrong. I think I messed up the breakdown of the sqrt of 125

98. ## Science

If my heart beats on average 73 times, how many times does my heart beat one day if my heart beat doesnt change? Hope you can help!

99. ## Math

define the variable, write the equation, solve and label. Central middle school sold 50 tickits for one night of the shcool play. Student tickets sold for \$2 each and adult tickets sold for \$3 each. They took in \$135. How many of each type of ticket did

100. ## geometry

Find the surface area of each of the following a cube that is 4 cm by 4 cm by 4 cm. A right circular cylinder that is 6 cm by 12cm. A right circular prisim 8cm by 5 cm by 6 cm. A sphere that is 4cm a right circular cone that is 8cm by 6 cm.

101. ## english communication

which of the following words is a homonym of bare?

102. ## physics

A simple harmonic oscillator consists of a 1.1 kg block attached to a spring (k = 180 N/m). The block slides on a horizontal frictionless surface about the equilibrium point x = 0 with a total mechanical energy of 3.0 J. (a) What is the amplitude of the

103. ## Algebra II

Find all real number soultions. x^3-9x^2+27x-27

105. ## western civilization 2

Representatives of postmodernism in the arts and scholarship share the tendency to Answer reject the formal rules of their discipline and looking for hidden meanings and subtle messages. embrace an aesthetic of simplicity and directness. assert that the

106. ## math

i am a three-digit decimal number. my thousandths is twice my tenths and my hundredths is the difference of my thousandths and tenths. what numbers am i

107. ## Math

Using the binomial theorem, Find the first three terms in the expansion of (x-(1/x))^5. My solution: C(5,0)x5 + C(5,1)(x4)(-1/x) + C(5,2)(x3)(-1/x)2 x5 + (5)(x4)(-1/x) + 10(x3)(-1/x)2 x5 + (-5x4/x) + 10(x3)(1/x2) x5 + (-5x3) + 10(x) x5 -5x3 + 10x The first

108. ## Physics

The 636 N weight held by two cables. The left-hand cable had tension 840 N and makes an angle of θ with the wall. The right-hand cable had tension 890 N and makes an angle of θ1 with the ceiling. a) What is the angle θ1 which the right-hand cable makes

109. ## subject and verb

could you please tell me what is the verb and subject in this sentence: Some young couples have decided to move to more rural areas in order to avoid the pressures of city living.

110. ## Algebra

the perimeter of a rectangle is 32 m. The length is 4m more than twice the width

111. ## Math 11

Solve for feta to two decimal places: Sin feta=0.5 feta= _____

112. ## Chemistry

How to find the marked volume in graduated cylinder?

113. ## chemistry

In one mole of the compound nitrogen diox- ide, what fraction of the total number of ions is the nitrogen ion?

114. ## Math

Which word describes the equation 17= t - 5? A. TRUE B. FALSE C. OPEN D.NOT GIVEN I know it's not a or b and I'm not sure what an open sentence is

Helping my child study. Are there any online guides that can help me teach how to predict the products of a reaction. i.e. _ Ag(NO3)+ _ CaCl2 yields Really want to be able to teach my child how to do this rather than have the answer. Thanks

116. ## Math

Could someone tell me if I am correct on this question? Laurie expects to make 100,000 in 2007.Her Social Security tax rate is 6.20% up to the wage base.Medicare is 1.45%.How much FICA is Laurie excepted to pay for the year? \$7,495.00 for my answer

117. ## Math

Can you please show me how choose the right answer and how to get the right answer. Which problem situation matches the equation below? 5x+5(x+20)=500 F. five people contributed to a fundraiser each give \$20 more than the basic amount requested. In all,

118. ## Math

Lyla deposited \$250 in an account earning 4% simple interest. At the end on one year, how much was in the account, assuming no more deposits or withdrawals?

119. ## U.S.History

Why was the Virginia Colony successful?

120. ## Chemistry

the difference between the boiling point and the freezing point of pure water at standard pressure is (1)32 K (2)273 K (3)100 K (4)373 K

121. ## STI'S

Hiv makes you immune to aids? is this true? You can get hiv from someone who doesnt have hiv? false?

122. ## physics

A simple harmonic oscillator consists of a 1.1 kg block attached to a spring (k = 180 N/m). The block slides on a horizontal frictionless surface about the equilibrium point x = 0 with a total mechanical energy of 3.0 J. (a) What is the amplitude of the

123. ## physics

A 95 N block rests on a table. The sus- pended mass has a weight of 22 N. What frictional force is required to keep the blocks from moving? Answer in units of N.

124. ## Home Economics

Why arethere two sinks side by side in the kitchen?

125. ## math

i am a mixed decimal number the sum of my whole number is equal to the sum of my decimal number. my tenths is half of my hundredths and my ones is twice my tenths. if all my digit are even and my hundredths is 8 what number am i. pls. answer my question

127. ## western civilization 2

In 1973 the countries of the West faced a new economic hardship when Answer the U.S. withdrew many loans and investments from Europe. the Soviet Union placed an embargo on trade with western Europe. the Japanese GNP surpassed that of Europe. oil-exporting

128. ## PHYSICS

What is the phase constant (from 0 to 2π rad) for the harmonic oscillator with the velocity function v(t) given in Fig. 15-30 if the position function x(t) has the form x = xmcos(ωt + φ)? The vertical axis scale is set by vs = 5.50 cm/s. Since i cant

129. ## English

I forgot to include these sentences. I hope you can have a look at them, too. 1)I live on a farm. I like my village because in the summer (in summer?) I can collect fruits, run in the fields and go biking (cycling?). 2) I can also go jogging. In October

130. ## accounting

What potential problems can arise if a company incorrectly classifies costs? Example, what if an inventoriable cost is classified as a period cost?

131. ## Math

The sum of three consecutive even numbers is 36. If x represents the first of the three consecutive even numbers, which equation can be used to find x? a. x(x+1)+(x+2)=36 b. x+(x+1)(x+2)=36 c. x+(x+2)+(x+4)=36 d. x(x+2)(x+4)=36

132. ## science

a 10 N force pushes a body northward while a 15 N force acting at the same point of the body pushes it southward. Find equilbrant of these two forces. do I add or subtract? what about direction

133. ## trigonometry

this is exactly how the question is written and i tried to solve it but i just couldn't. Can u please show me how the work was done I don't want just the answer. using the exact values,find the value of: 12 sin 30degrees - 6 tan of 45 degress + sec 45

134. ## Social Studies

Where was the first civilization? What was the region called then and now?

135. ## accounting 205

•Describe for the students the primary objectives of accounting. •Explain the basic terminology of the accounting process or financial reporting. •Explain how accounting can affect your personal life emphasizing professional ethics

the temperature of a substance increases by 10 degrees celsius in 5 minutes. write this as a unit rate. then convert into degrees fahrenheit per hour.

137. ## Human Physiology

What would be the effect of low blood protein levels on the colloidal pressure?

138. ## English

I still have a few doubts. I hope you can have a look at them, too 1)He spent three years building the cathedral. But: He took three years to build the cathedral. 2)We wont's start dinner (the dinner?) until your father arrives home. 3) The Great Fire of

139. ## chemistry

if 150g of Ca(OH)2 is reacted with excess H2, how much energy will be needed?

140. ## thermodynamic

The air 10 cm diameter cylinder, as shown below, is heated until the spring is compressed 50mm. Find the work done by the air on the frictionless piston. The spring as the beginning of this process has a displacement of 0.0m with a spring constant of

141. ## Algebra

a nickle is approximately 20mm in diameter and a quarter is about 25 mm in diameter. if the nickle is enlarges to a diameter of 128mm, what would be the diameter of the quarter using the same scale?

Helping my child study. Are there any online guides that can help me teach how to predict the products of a reaction. i.e. _ Ag(NO3)+ _ CaCl2 yields Really want to be able to teach my child how to do this rather than have the answer. Thanks

143. ## science

if an astraunout could jump 40 cm on jupiter how high could he ir she jump on earth how about the moon also????? pleese help me im stuck on this question

144. ## western civilization

Since the 1950s the countries of Western Europe have seen Answer heavy industry come to dominate the economy. immigrant laborers leaving in large numbers because of few job opportunities. people from countries in the European Union able to access bank

145. ## english communication

the following words each contain the letters c, i, and e. which word is spelled correcly?

146. ## MATH!! probability

Two cards are drawn without replacement from a deck of 52 cards. Determine P(A and B) where A : the first card is a spade B: the second card is a face card please help!!

147. ## Medical Information Management and office practice

At Allendale Psychiatric Hospital, the hospital census on January 4 is 110. According to the following data, what's the hospital census for January 5? Admissions 10 Discharges 2 A & D A. 99 B. 100 C. 108 D. 118 What is the correct answer?

148. ## math

when a standard distribution plot is skewed right, where are the mean and median found?

149. ## Math: Algebra 2

Factor Completely with respect to the intergers. 2x^3-3x^2+4x-6

150. ## English

Can you please check these sentences for me, please? I included the doubts in parentheses. 1)I live in a town, in southwestern (in south-west also possible) Piedmont, called Rodda. It’s about 250 metres above sea level. 2)I’ve lived there (or here?)

151. ## algebra 2

What is the third–degree polynomial function such that f(0) = –18 and whose zeros are 1, 2, and 3

152. ## english

my teacher want us to write a 5 page report/essay on what we want to be when grow up, i said a police but don't have 5 pages of the information how do i write a 5 page report on the police career?

153. ## algebra

function f(x)=2x^2-3x f(0)= f(-1)= f(2)=

154. ## physics

how many cubic centimeters are in a block of brass weighing 34 grams?

155. ## math

The tooal amount of interest on a loan of 6,000 for 150 days is 210.50.using the ordinary interest(360 days)method,what is the rate of interest on the loan.Round off answer to the nearest hundredth. I think it is 8.42% Darrell owns a consulting business

156. ## writing

• Write several sentences describing a recent interaction with a friend or family member about personal finance or credit cards. This interaction may be imagined or real. • Use at least five different pronouns, adverbs, and adjectives in your

157. ## chemistry

what would be a diagram that we can use to idenitify an unknown substance using electrochemical data. we have a reduction table and ksp values and we also that the substance is either bromine or iodine

158. ## English

Sorry to bother you, but i have to make a map of maycomb and I wanted to know the location of the chinaberry trees and the streetlight dill hangs around

159. ## math

There is a square with each of it’s side is of 2m. An octagonal is cut-of from this square by cutting it’s edge such that the octagonal has all it’s sides equal. Find out the length of each side of the octagonal

1 What are the reasons of declines in employee job satisfaction? 2 What factors differentiate good decision makers from poor ones? 3 When do groups make better decisions than individuals? 4 What are the pros and cons for focusing on the distant future and

Helping my child study. Are there any online guides that can help me teach how to predict the products of a reaction. i.e. _ Ag(NO3)+ _ CaCl2 yields Really want to be able to teach my child how to do this rather than have the answer. Thanks

162. ## ENGLISH

Second, write five sentences in which you address changes in your writing

163. ## English

I was to write 2 paragraphs on how interest rates affect our purchasing decisions and underline the topic sentence of each one. I would like to know if my prargraphs are okay and if I chose the TS correctly. Since I don't know how to underline here the

164. ## Chemistry

chemistry question. How many grams of silver sulfide can be produced by heating 45 grams of silver excess sulfer?

165. ## science

calculate the distance an object travels if its speed is 60km/h and it travels for 6h

166. ## math

a mechanical toy on a circular track goes foward 3in. then back 2in. how many moves does the toy take to complete one 15in. revolution? i got 15 moves but i just want to make sure i did it right.

167. ## English

Can you please check these sentences,too? Thank you. 1)The men (or men) had the function of linking (also to link?) all creation. She was married to her people. 2)In contrast/on the contrary, the Spanish ships were slower. Chaucer suspends judgement on his

168. ## Math

A student takes in 2,300 calories and burns 2,500 calories. Find the net calories.

169. ## math

Susan has 50ft of fencing to use to build a garden in her backyard. A: The shape must be a rectangle/square. B: Sketch at least five different examples that Susan could use for her backyard and state what the perimeter of each one is. C: The most important

why is it necessary for a good leader to be a good manager and vice versa?

171. ## physics

A girl delivering newspapers travels 2 blocks west, 10 blocks north, then 4 blocks east. What is the magnitude of her resultant dis- placement? Answer in units of blocks. 077 (part 2 of 3) 10.0 points Find the direction (measured from due east, with

172. ## HIstory

How did it affect the Guarani Indians when they were first encountered the conquistadors?

173. ## western civilization 2

Which is not a feature of life shared by most Western Europeans? Answer a.social security b.access to national health services c. guaranteed employment d. low educational fees e. family benefits and services

OK so i have to do a project on duchenne muscular dystrophy and I need one page notes about them...so can someone please just give me a couple of quick notes on it? thank you!

175. ## Chemistry

How do you find the molar mass of HBr?

176. ## Physics

A ball rolls off a 3.5 m high box with a velocity of 4m/s. How long does it take to reach the floor and how far from the box does it land?

177. ## Calculus

How can I find the derivative of y = [ln(x+4)^3]^2 ?

178. ## math

i am a mixed decimal number. the sum of my whole number is equal to the sum of my decimal number. my tenths is half of my hundredths and my ones is twice my tenths. if all my digits are even and my hundredths is 8, what number am i.

179. ## Math

Which of the following is a solution of the equation 5x + 4 = 14? A. 2 B. -2 C.3 D.1

180. ## Biology

how does the external environment of an organism can affect gene function.

181. ## Algebra

A moving company charged \$84 plus \$50 an hour to move households across town. Another moving company charges \$60 an hour for cross-town moves. For what lengths of time is the second moving company more expensive?

182. ## Physics

how do i find the volume of a block of platinum weighing 45.5 kilos

183. ## MATH 12

two cards are drawn without replacement from a shuffled deck of 52 cards. determine the probability of each event: a) the first card is a heart and the second is the queen of hearts b) the first card is the queen of hearts and the second is a heart

184. ## Prove trig identity

Prove the following trigonometric identity: (sec^2x-1)(csc^2x-1)=1

185. ## Science

which is not a from of energy ? light temperature electricity heat

186. ## English

I forgot to include the very last sentences. Thank you. 1) You have to be yourself and don’t change to be accepted in a group. If they’re your friends, they’ll accept you for who you are. 2)The character is a person represented (?) or presented in a

187. ## Economics

Explain the entities affected by industrial regulation in terms of market structure.

188. ## algebra

On three consecutive passes a football team gains 9 yards, loses 10, and gains 16 yards, what number represents the total net yardage?

189. ## physics

density= mass/volume=150kg/(30*20*500) in kg/cm^3 what is kg/cm^3 and can you explain how to use this please

190. ## math

there six coins. each coin has a different value. how much is the total value of the coins

Are men better leaders than women?Explain your position with research based views and scholastic sources

192. ## inf 103

Which input/output devices will you be using in the next one to three years as "computing" devices?

193. ## physics

A freight train has a mass of 3.2 × 107 kg. If the locomotive can exert a constant pull of 7.1 × 105 N, how long would it take to increase the speed of the train from rest to 74.6 km/h? (Disregard friction.)

194. ## Physics 30

A radioactive isotope(h=4.5days) was prepared. This isotope was used 14 days later when it had an activity of 6000000 Bq. What was the activity of this isotope when initially prepared?

Are men better leaders than women?Explain your position with research based views and scholastic sources

196. ## Math

What is greater \$5.00 or the total value of all combinations of three coins you can make using only pennies, nickels,dimes,and quarters?

197. ## language arts

i have been looking EVERYWHERE for a correct definition of the words retaliatory and immune... please help!!!!

198. ## Math

A company's cost of doing business in a recent month was \$18,000. Their revenue on sales for that month was \$27,000. What percent profit as a percentage of sales did the company earn?

199. ## human life

What does "Identify your values" mean?

200. ## math

What type of math is this? 25% of what is 30? and solve for a: ab=b=3a-d

201. ## physical education

there are three types of components of body type (somatotype). give the three components in the correct order

202. ## math

describe the relationships that can be formed from different ratios of similar figures.

203. ## Psychology

if a person copied answers off another persons test, what would that say about their maturity?

204. ## physics

how do you find time?

205. ## physics

if a wooden beam is 30 x 20 x 500 cm. and has a mass of 150 kg. what is the density of the wood

206. ## com170

Can you tell me if I correct all grammar errors?There are three kids in the room. We have been married for 20 years, and are relationship is as strong as ever. I am having trouble with my car. Can you give me some advice? The diplomats are doing what they

207. ## physics

A car has an acceleration of 2 m/s2, what does this tell you about the volocity of the car .

.How should the leader deal with the situation?

why is it necessary for a good leader to be a good manager and vice versa?

210. ## Math

what are 3 equivalent fractions to 5/11?

211. ## Physics

1.What is the acceleration of a projectile when instantaneous vertical velocity is zero at the top of its trajectory?

212. ## math

Billy has a bag of candy that contains 13 red pieces, 9 green pieces, 3 yellow pieces, and 7 orange pieces. If Billy reaches into the bag without looking, what color is he least likely to get?

213. ## Physics 30

The activity of a sample of a radioactive isotope is 1800Bq. If this isotope has a half-life of 16 days, what is the activity after 16 days?, 24 days?, and 60 days?

214. ## English

Thank you very much for helping me. Here are some more sentences on the same subjects. 1)An electrician is someone who plans electrical equipments (systems, appliances??). 2) A nurse is someone who takes care of sick people. 3) A teacher is someone who

215. ## Human Physiology

How do low plasma protein levels produce edema?

216. ## English

I have three very last sentences I'd like you to check. Thank you. 1)You limited yourself to reporting what was on the photocopy without revising (rewording) any single sentence. Furthermore, instead of joining your ideas (with)using appropriate linkers

217. ## alg2

Describe the end behavior for the graph of y= 12x^6 + 4x^4 - x^3 + 6x +1

218. ## Math

Selena received a \$42 commission for selling a computer for \$1400. What percent is her commission?

219. ## chemistry

if you react magnesium solution and lead powder together is there a temperature change?

220. ## english

What does my paper suppose to look like when I put my references in APA format

221. ## math

The seventh book in the harry potter series has 759 pages. How many 2s were used when typing the page numbers?

one kilogram is poured into a cylandrical vase and fills it to a depth of 8 cm. find the cross section of the cylander. how do i do this?

223. ## Algebra II

x^4-5x^3-16x^2+23x-3 divided by x^2+2x-3

224. ## math

Susan has 50 ft. of fencing in her backyard. What is the largest area garden Susan can create, show the gardens dimensions and explain how you know its the largest area

225. ## Algebra

The representative tells you that floor plan #1 sells for \$175,000 and floor plan #2 sells for \$200,000. She also mentions that all the available houses combined are worth \$7,200,000. Write an equation that illustrates this situation. Use the same

Enviromental problems, Endangered animals are becoming endangered one of the ecamples are the panamian godlen frog. which lives in the habitat of high elevation and rainfroests near fresh water streams. What is being done to control freshwater pollution?

227. ## probability and statistics

when a standard distribution plot is skewed right, where are the mean and median found?

228. ## Math

Simifly the expression (-3y + 2x)(-2) + y +(-x)

229. ## math

I am a three-digit decimal number.My thousandths is twice my tenths.What number am I?

230. ## Math

Least to greatest -3, 4, -2

231. ## Chemistry

Melted potassium chloride conducts an electric current. explain.

232. ## math

To which sets of numbers does the square root of 31 belog too

233. ## homework help!

Would you kindly help my 3rd grader child with the below question Two ways that Ancient Greece & Egypt are alike and or different? Thanks!

234. ## Math

the product (-3)(5)(-8)(15) is: A.Positive B. Negative C. Zero D.Not here

235. ## space

How many socks would it take to fill the space shuttle

236. ## federal tax

Compute Marie's taxable income for 2008, assuming she is single and claims two dependent children. Her adjusted gross income is \$70,000 and she has itemized deductions of \$9,000.

237. ## English

Can you say: "How long is it since you have known Peter?" Isn't since always followed by the past simple? Thank you for your cooperation. I corrected the alternative: "How long have you known him for?"

238. ## social studies

What are the failures of the UN organization -World meteoroligcal organization(WMO)

239. ## English

I read a text about a girl/boy comparing the choise of a career/job with a jigsaw puzzle. My teacher asked me to tell who this person is and were this person is going? I have trouble with were this person is going. I have to do one paragraph !! Please help

Z+5/7=3 home work problem that was not taught in class?

241. ## Algebra 1

solve f(x)=3x+2 for x.

242. ## science

what surface feature characterize the fault line? what does the question mean? and also, i need to find articles on it need those that end in gov,org ,or edu

243. ## Geometry

Given line XY, how many points on the line are exactly 3 inches away from point X? Explain

244. ## Science

Who first discovered color blindness? Could you give me a little bit of background info too please?

he leader of your client organization has observed a lack of flexibility and a slow decision-making process in many of the departments. He believes that he is not serving his customers well, and has decided to move to a team environment and to push many of

246. ## algebra

can you tell me what is the radius for 9in for a circle

247. ## physics

how could i find the mass of a liter of alcohol

248. ## criminal justice

Name some ethical dilemas that prosecutors have to face

249. ## English

I forgot to include these other sentences. I just would like to know if all the shops are possible. Thank you. 1))A: You sound angry. It’s nothing. (That’s nothing is possible? But not: there is nothing important.) 2) Someone (and not: Nobody) told me

250. ## early childhood education

Give an example of putting DAP into practice.

251. ## physics

if the length of a pendulum is 0.8m what is the period if the angular deflection is 30 degrees?

252. ## Geology

Why is pattern recognition with respect to earthquakes so important?

253. ## early childhood education

List the five guidelines of DAP as set forth in DAP curriculum?

254. ## Math

Tomas put \$180 in an account earning simple interest. At the end of one year, the account had \$186.30 in it. Assuming no additional deposits or withdrawals, what was the interest rate being paid?

255. ## Science

Explain the basis of judgment you believe should be used for addressing the moral questions or dilemmas surrounding the issue of coal use. What exactly is this question asking of me? Not sure what to do.

256. ## english

what is the subject and veb in this sentence? a rumor has been spreading about the possible closing of the plant.

i have a report on william clark due it 2days i need help. FAST!

258. ## English

I forgot to include these few last sentences. Thank you. 1) Chaucer projected (?? planned) to write 120 tales. 2) The characters almost come from the same social class because the nobles wouldn't travel (better: wouldn' have agreed to travel with

259. ## eth125

what are some changes the uniteds states has made to policies concerning the treatment of muslim and arabic membersof society?

260. ## english communication

which of the following has a hyphen thst's used correctly?

261. ## Math

of the 43 presidents 15 were elected to 2 terms. what fraction of us presidents were elected two terms? HELP! I have been at this one for over two hours and I can't come up with the answer.

262. ## math

4 2/5 - 2 1/2 = P + 3/10