1. Chemistry

which property of a distilled water solution will not be affected by adding 50 mL of CH3OH to 100.mL of the water solution at 25? conductivity mass freezing point boiling point please help

2. Physics

How much work must be done to stop a 1250 kg car traveling at 105 km/h?

3. Physics

A 65kg trampoline artist jumps vertically upward from the top of a platform with a speed of 5.0m/s. a) How fast is he going as he lands on the trampoline, 3.0m below. b) if the trampoline behaves like a spring with a spring stiffness constant 6.2*10^4N/m,

4. pre cal

The radius of the earth is approximately 3960 miles, what is the linear speed of a point on the equator in miles per hour. Round your answer to the nearest mph.

5. Maths

The radius of a wheel is 7 cm. In covering 44 km, how many revolutions will it make?

6. Chemistry

Assume equal aqueous concentrations of each of the following substances. Which has the lowest freezing point? C2H12O6 CH3OH C12H22O11 NaOH i say its NaOH am i right ?

7. spanish 4

César le da consejos a un amigo en su primer día de trabajo porque el director de la cadena tiene muy mal humor. Escucha los consejos y cámbialos a mandatos. Sigue el modelo. Play audio For number 1 this is what the person says 1)el siempre pide que

8. Physics Mechanics

Particle A and particle B are held together with a compressed spring between them. When they are released, the spring pushes them apart, and they then fly off in opposite directions, free of the spring. The mass of A is 3.00 times the mass of B, and the

9. Calculus

According to Kleiber's Law, the metabolic rate P (in kilocalories per day) and body mass m (in kilograms) of an animal are related by a three-quarter power law given below. Estimate the increase in metabolic rate when body mass increases from 65 to 66 kg.

10. Physics

A ski starts from rest and slides doen a 22 degree incline 75m long. a) if the coefficient of friction is 0.090, what is the ski's speed at the base of the incline? b). If the snow is level at the foot of the incline and has the same coefficient of

11. Calculus

Decide if the following function f(x) is differentiable at x=0. Try zooming in on a graphing calculator, or calculating the derivative f'(0) from the definition. f(x) = x^4sin(2/x), if x is not equal to 0, and f(x) = 0 if x = 0. If it is differentiable,

12. Linear Algebra

Two prospectors are pulling on ropes attached around the neck of a donkey that doesn’t want to move. One prospector pulls with a force of 25 lbs, and the other pulls with a force of 50 pounds. If the angle between the ropes is 30 degrees, then how much

13. Chemistry

The human body obtains 1094 kJ from a candy bar. If this energy were used to vaporize water at 100°C, how much water in liters could be vaporized? (Assume that the density of water is 1.0 g/mL.)

14. Physics

If a curve with a radius of 88m is perfectly banked for a car traveling 75km/h, what must be the coefficient of static friction for a car not to skid when traveling at 95km/h?

15. Chemistry

in a closed system at 40 C, a liquid has a vapor pressure of 50 KPa. the liquid's normal boiling point could be (1)10 C (2)30 C (3)40 C (4)60 C

16. physics

A special electronic sensor is embedded in the seat of a car that takes riders around a circular loop-the-loop at an amusement park. The sensor measures the magnitude of the normal force that the seat exerts on a rider. The loop-the-loop ride is in the

17. physics

The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the plane of the equator. Assuming the earth is a sphere with a radius of 6.38 x 106 m, determine the centripetal acceleration of a

18. physics

How long would a 150 W lightbulb have to glow to produce the same amount of energy expended by Georgie? Answer in units of s.

19. Chemistry

Why would an alcohol/water mixure not freeze at constant temperature.

20. social studies

I need 3 facts about the code of Chivalry

21. Physics

A proton has a mass of 1.672 X 10 -27 kg. What is its weight? (using 9.81 for gravity)

divide 891 by 40 and write the quotient as a mixed number

23. physics

A ball is thrown up onto a roof, landing 4.50 s later at height h = 20.0 m above the release level. The ball's path just before landing is angled at θ = 54.0˚ with the roof. (a) Find the horizontal distance d it travels. What are the (b) magnitude and

24. chemistry

if oxygen gas were collected over water at 22c and the total pressure of the wet gas were 710 mm hg what would be the partial pressure of the oxygen?

25. CHM general 2

Indicated whether the calculated molarity of NaOH would be lower or higher Than the real value; or unaffected? a) the water of the NaOH solution is not boiled and cooler before the solution is prepared b) The buret, wet with water, is not rinsed with NaOH

26. physics

A 120-kg tackler moving at 5 m/s meets head-on (and tackles) a 80-kg halfback moving at 5 m/s, after which they couple together. What will be their mutual speed after the collision? Hint: use conservation of momentum law for INELASTIC collision.

27. physics

a .140 kg baseball is dropped from rest from a height of 2.2m above the ground. it rebounds to a height of 1.6 m. what change in the balls momentum occurs when the ball hits the ground

28. Physics

Two point charges are separated by 10.0 cm and have charges of 2.0 μC and -2 μC, respectively. What is the electric field at the point midway between the two charges? (k = 8.99 x 109 N.m2/C2) A. 28.8 x 10 6 B. 14.4 x 106 C. 7.19 x 106 D. 3.59 x 106 E.

29. geometry

The measure of an angle of a parallelogram is 12 degrees less than 3 times the measure of an adjacent angle. find the measure of all the interior angels of the parallelogram.

30. physics

A railway track travelling along a level at 9 m/s collides with, and becoms coupled to a stationary truck. Find the velocity of the coupled trucks immediately after the collision if the stationary truck has a mass which is : A ) equal to the mass of the

31. Chemistry - Enthalpy change and stoichiometry

N2 + O2 = 2NO enthalpy change = +180.6kJ c) what is the enthalpy change for the formation of one mole of nitrogen monoxide? d) What is the enthalpy change for the reaction of 1.000 * 10^2g of nitrogen with sufficient oxygen? I do not understand how to

32. geometry

What is the length of an equilateral triangle whose altitude has a length of 21

33. physics

A "swing" ride at a carnival consists of chairs that are swung in a circle by 16.6 m cables attached to a vertical rotating pole, as the drawing shows. Suppose the total mass of a chair and its occupant is 239 kg. (a) Determine the tension in the cable

34. Physics

A 11.3 weather rocket generates a thrust of 240 . The rocket, pointing upward, is clamped to thetop of a vertical spring. The bottom of the spring, whose springconstant is 570 , is anchored to the ground. Initially, before the engine is ignited, therocket

35. Chemistry

The gaseous product of a reaction is collected in a 25 L container at 27 degrees Celsius. The pressure in a container is 300 kPa and the gas has a mass of 96 g. What is the formula mass of the gas?

36. Chemistry

Hi I am doing a lab report for the kinetic behaviour of phenolphthalein in aqueous solutions. I did two runs, each with different concentrations of OH-, and Cl-. I have graphed x, ln x, and 1/x to determine which one has the most linear plot to determine

37. physics

A boy of mass 54.3 kg is initially on a skateboard of mass 2.00 kg, moving at a speed of 10.4 m/s. The boy falls off the skateboard, and his center of mass moves forward at a speed of 10.9 m/s. Find the final velocity of the skateboard. magnitude

38. Math

Solve the linear programming problem by the method of corners. Minimize C = 3x + 7y subject to 4x + y ≥ 39 2x + y ≥ 29 x + 3y ≥ 42 x ≥ 0, y ≥

39. analogies

boil is to soil as goat is to what?

40. physics

The International Space Station, launched in November 1998, makes 15.65 revolutions around the earth each day in a circular orbit. Apply Newton's second law to the space station and find its height (in kilometers) above the earth's surface.

41. Calculus

Sorry for posting another quesiton..; f(x) = { -7x^2 + 7x for x0 According to the definition of derivative, to compute f'(0), we need to compute the left-hand limit lim x-> 0− = _____ and the right-hand limit lim x->0+ ______ We conclude that f'(0)=

42. English

Can you please check these sentences? Thank you very much. 1) Vietnam was divided into two parts after World War Two. North Vietnam was communist under the governement of Ho Chi Minh whereas South Vietnam was under control of the US. 2) The USA started to

43. physics

A satellite is placed in orbit 2.75 x 105 m above the surface of Jupiter. Jupiter has a mass of 1.90 x 1027 kg and a radius of 7.14 x 107 m. Find the orbital speed of the satellite.

44. Chemistry

Consider the reaction: 2 H2S(g)-->

45. analogies

flower is to rose as tree is to what?

46. ap chemistry

methanol and ethanol are common organic solvents. if the mole fraction of CH3OH in a mixture of the two solvents is 0.4 what is the mole fraction of methanol in the vapor in equilibrium wih the liquid mixture at room temperature 25 celius. the vapor

47. Math

What is 10x + 2y - 10 = 0 in slope intercept form ? and can you also explain how you got the answer cause I'm not really sure how to convert that into slope intercept (y = mx + b) m = slope and b = y intercept

48. physics

A child is twirling a 0.0165-kg ball on a string in a horizontal circle whose radius is 0.149 m. The ball travels once around the circle in 0.543 s. (a) Determine the centripetal force acting on the ball. (b) If the speed is doubled, by what factor does

49. physics

A boy of mass 54.3 kg is initially on a skateboard of mass 2.00 kg, moving at a speed of 10.4 m/s. The boy falls off the skateboard, and his center of mass moves forward at a speed of 10.9 m/s. Find the final velocity of the skateboard. magnitude

50. Environmental engineering

(10 Points) A contractor is trying to estimate the distance to be expected of a drawdown of 4.81 m from a pumping well under the following conditions: Pumping rate = 0.0280 cubic meter per seconds Pumping time = 1066 d Drawdown in observation well = 9.52 m

51. analogies

mountain is to fountain as change is to what?

The volume of a cube is 343 mm2. What is the length of one side of the cube?

53. Chemistry

Consider the reaction: 2 H2S(g)-->

54. physics

A boy of mass 54.3 kg is initially on a skateboard of mass 2.00 kg, moving at a speed of 10.4 m/s. The boy falls off the skateboard, and his center of mass moves forward at a speed of 10.9 m/s. Find the final velocity of the skateboard. magnitude

55. calculus

Let P(t) represent the number of wolves in a pop. at time t in years, when t is greater than or equal to 0. The pop. P(t) is increasing at a rate directly proportional to 800-P(t), where the constant of proportionality is k. I just want to know if my

56. Social Studies

Document Based Question Essay Question: The debate over the extent of federal power with regard to the states dominated the political scene the first twenty years of the post-Revoluntionary War United States and would set the stage for future division

57. chamistry

how do you calculate the mole fraction of HCl in an acqueous solution that contains 33.6% HCl by mass?

58. physics

Estimate the speed of the parachutist descending at the constant velocity with open parachute. Assume the area of the parachute, A = 30 m^2, mass of a person, m = 100 kg, and density of air, roh = 1 kg/m^3. Enter the answer limited to the second decimal

59. Physics

Which process will double the power given off by a resistor? a. Doubling the current while doubling the resistance b. Doubling the current by making a resistance half as big c. Doubling the current by doubling the voltage d. Doubling the current while

60. Physics

A nichrome wire has a radius of 0.50 mm and a resistivity of 1.5 ´ 10‑6 W‑m. What is the resistance per unit length of this wire?

61. English

I need to write a Reading Response to "Why We Crave Horror Movies" by Stephen King. I need help figuring out the theme to the essay.

62. math

HELP ME PLEASE!!!!! Convert to an improper fraction. Type in your answer with the negative in the numerator. -11 1/3= I have NO clue how to do this!?

63. physics

A steel ball is dropped from a height of 50.0m. How far does this ball travel after 3 seconds?

64. physics

Two banked curves have the same radius. Curve A is banked at 11.0 °, and curve B is banked at an angle of 17.4 °. A car can travel around curve A without relying on friction at a speed of 15.3 m/s. At what speed can this car travel around curve B without

65. Physics

How fast (in rpm) must a centrifuge rotate if a particle 9.00cm from the axis of rotation is to experience an acceleration of 115,000g's?

66. calculus

If x^{2} + y^3 - x y^2 = 5, find dy/dx in terms of x and y. Using your answer for dy/dx, fill in the following table of approximate y-values of points on the curve near x=1, y=2. Finally, find the y-value for x=0.96 by substituting x=0.96 in the original

67. physics

A diver runs horizontally with a speed of 0.759 m/s off a platform that is 10.0 m above the water. What is his speed just before striking the water

68. math

a grocery store stocks 3 brands of yogurt.store sells two containers of brand A yogurt for every one container of brand B or brand C yogurt.if the store sells 100 containers of yogurt a day,how much of each brand of yogurt do they sell?

69. physics

A football kicker can give the ball an initial speed of 30 m/s. What are the (a) least and (b) greatest elevation angles at which he can kick the ball to score a field goal from a point 48 m in front of goalposts whose horizontal bar is 3.44 m above the

70. college physics

An airplane is flying with a velocity of 240 m/s at an angle of 30.0° with the horizontal, as the drawing shows. When the altitude of the plane is 2.4 km, a flare is released from the plane. The flare hits the target on the ground. What is the angle è?

71. college physics

loft the ball with an initial speed of 15.0 m/s at an angle of 50.0° the horizontal. At this instant your opponent is 10.0 m away from the ball. He begins moving away from you 0.38 s later, hoping to reach the ball and hit it back at the moment that it is

72. Chemistry

Seawater contains 0.412 g Ca per kilogram of water. What is the number of moles of Ca per kilogram of water? What is the concentration of Ca measured in ppm? For the first question, it's changing the grams of Ca to moles of Ca. Is it .412 g / 39 g = .0105

73. physics

The large blade of a helicopter is rotating in a horizontal circle. The length of the blade is 6.07 m, measured from its tip to the center of the circle. Find the ratio of the centripetal acceleration at the end of the blade to that which exists at a point

74. Finance

3. Your firm is considering buying a new machine that costs \$200,000, is expected to generate \$110,000 in new revenue each year and will cost \$45,000 a year to operate. If your firm's marginal income tax rate is 35% what is the Net Cash Flow your firm will

75. physic

If the work required to speed up a car from 13 km/h to 20 km/h is 6.5×103 J, what would be the work required to increase the car’s speed from 20 km/h to 35 km/h?

76. AP English Language

Identify the rhetorical device or devices used in each of the following: 1. Finally,brethren, whatever is true, whatever is honorable, whatever is right, whatever is pure, whatever is lovely, whatever is of good repute, if there is any excellence and if

77. physics

A Boeing 747 "Jumbo Jet" has a length of 59.7 m. The runway on which the plane lands intersects another runway. The width of the intersection is 21.3 m. The plane decelerates through the intersection at a rate of 5.33 m/s2 and clears it with a final speed

78. physic

A dynamite blast at a quarry launches a rock straight upward, and 2.0 s later it is rising at a rate of 15 m/s. Assuming air resistance has no effect on the rock, calculate its speed (a) at launch and (b)4.2 s after launch

79. trigonometry

is this correct? sin 255degrees 225 = 180 + 45 sin(225) = sin(180 + 45) = sin(180)cos(45) + cos(180)sin(45) sin(225) = 0 + (-1)(sqrt2/2) sin(225) = -(sqrt2)/2

80. Physics

A cat rides a merry-go-round turning with uniform circular motion. At time t1 = 1.80 s, the cat's velocity is (3.60 m/s)i + (2.00 m/s)j , measured on a horizontal xy coordinate system. At t2 = 5.70 s, its velocity is (-3.60 m/s)i + (-2.00)j . What are (a)

81. Chemistry

The reaction X + Y --> products was studied using the method of initial rates. The initial rate of consumption of X was measured in three different experiments. What is the value of the rate constant, k? *concentrations are in mol/L and initial rates are

82. World History Honors

Compare the differences and similarities between the militarists in japan and the european fascists. thanks for any help, much appreciated! :) -nicole

83. physics

In a skating stunt known as "crack-the-whip," a number of skaters hold hands and form a straight line. They try to skate so that the line rotates about the skater at one end, who acts as the pivot. The skater farthest out has a mass of 69.0 kg and is 5.50

84. pre cal

a pendulum length 12.3 inches swings 2 degrees and 57 minutes to each side of its vertical position. To the nearest hundredth of an inch, what is the lenght of the arc through which the end of the pendumlum swings?

Would changing the frequency of a wave cause a change in amplitude? I would say only if the wave velocity remains the same because if the frequency increases, vibrations increase and then amplitude would decrease, correct? If I had a wave diagram will 4

86. algebra2

What is the relationship between the degree of a polynomial and the number of zeros (roots) it posses? Be sure to explain in your answer how prime polynomials violate this relationship.

87. math

It took Melanie 161 minutes to do her homework last night. About how many hours did she spend on her homework?

88. physics

You are hired as ballistics expert and need to measure the muzzle speed of the bullet (with a mass, m = 20 g) for the gun. You fire a ballistic gun horizontally into a 2-kg ballistic pendulum (M = 2 kg) hanging at rest on a massless rod. After the bullet

89. physics

Two planes of the same mass collide head-on and becomes tangled so that they move on together. If the engines of both were stopped at the moment of impact and the speeds of the planes at impact were 120m/s and 200 m/s, find the joint velocity immediately

90. 10th

i am just abt to finish my 10th grade,i am very weak at maths and science,hence i have opted to take economics. 1.is this the right choice? 2.is there goin to be maths in it? 3.what are the core subjects involved?

91. programming

Write a program that asks for the length and width of two rectangles. The program should tell the user which rectangles has the greater area, or if the area are the same.

92. physics

A soccer ball of diameter 30 cm rolls without slipping at a linear speed of 3.1 m/s. Through how many revolutions has the soccer ball turned as it moves a linear distance of 15 m?

93. college physics

A diver runs horizontally with a speed of 0.759 m/s off a platform that is 10.0 m above the water. What is his speed just before striking the water?

94. chemistry

What is the approximate thermal energy in kJ/mol of molecules at 275° C

95. physics

A lawn roller is rolled across a lawn by a force of 109 N along the direction of the handle, which is 24.2 above the horizontal. If the lawn roller develops 66.1 W of power for 64 s, what distance is the roller pushed? Answer in units of m.

96. Earth science

what is the most important reason that sediments at beaches are usually rounded and smooth

97. Precalculus

The directions are write the expression as the sine, coine, or tangent of an angle. (tan 25 degrees + tan 10 degrees) / [1 - [(tan 25 degrees)(tan 10 degrees)]]

99. chemistry

The specific heat of the dilute NaCl solution formed during the neutralization of the HCl is about 2% less than the 4.184 J/k g assumed in the calculation for the molar heat of neutralization of the acid. How will this affect your final result for the heat

100. French

I have this chart thing made for french with all the months, and I basically have to list down holidays and stuff which occur in those months and that too in French. So this is what I have so far, and please add anything that I don't have. Thanks *I also

101. math

The following pattern continues indefinitely: REPEATREPEATREPEAT 1) What is the 38th letter in the pattern? Explain answer. 2) What is the 40th letter in the pattern? Explain answer. 3) What is the 604th letter in the pattern? Explain answer.

102. english

one example of symbolism in the short story ''A company full of laughing faces''. pl help

please help me with that as soon as any bady can processExpression - this method should take a String in the format: "integer [[+-*/] integer]*]" Your method should then process this expression and return the result as an integer. You must solve this

104. analogies

brother is to mother as fly is to what

105. Physics

When a patient’s injured neck is healing, it is often desirable to prevent the weight of the head from pushing down on the neck. This can be accomplished with the system of pulleys shown in the figure. The pulleys are all small and extremely light in

106. Chemistry

Write an equation for the reaction that takes place when LiOH is added to water.

107. math

I need help graphing equations and inequalites like 5x+4y=20,6x-2y=-4,3x+y=5, and -3x-y=0

108. physics

A lawn roller is rolled across a lawn by a force of 109 N along the direction of the handle, which is 24.2 above the horizontal. If the lawn roller develops 66.1 W of power for 64 s, what distance is the roller pushed? Answer in units of m.

109. statistics

if a football coach predicts his team to win 9 out of 10 or 90% which prediction did he use to make his prediction

110. geometry

what is the perimeter of a regular octagon whose sides are 9.4 centimeters long.

111. Calculus

Find the slope of the tangent line to the ellipse (x^2)/4 + (y^2)/9 = 1 at the point (x,y)

112. math

find the sum of2 3/4 and 2 4/5.find the differnce between this sum and 6

113. Psychology

Carl Jung’s idea of the collective unconscious states that we share: (Points: 5) inherited universal ideas, wishes, and memories. common learning experiences in childhood or infancy. tendencies to sacrifice ourselves individually for the group. ideas

114. College Math ll

Area of a painting A rectangular painting with a width of x centimeters has an area of x^2 + 50x square centimeters. Find the binomial that represent the length

115. physics

At time t=0 a projectile passes through the point (0,0,192) with a velocity v=10i-2j+16k. Because of spin and gravity, the projectile experiences an acceleration given by a=2i-32k. a. Find the velocity v(t) and position vector R(t) at time t>0. b. At what

Would changing the frequency of a wave cause a change in amplitude? I would say NO because they don't affect each other, correct? If I had a wave diagram will 4 complete waves showing and it said the diagram represented 4 sec in time the frequency would be

117. physics

We throw a ball horizontally at 10m/s. (a) after how much time does the trajectory form a 30 degree angle? (b)after how much time after the throw did the velocity double?

118. physics

An Atwood machine consists of two masses (m1 = 175 grams, m2 = 485 grams) connected by a string over a frictionless pulley. The initial height above the floor is 157 cm. Both masses start from rest at point A ; point B is just as m2 hits the floor. What is

119. algerbra/math

His brother Carlos has 10 more games than Juan has. Write an algebraic expression the shows how many more games Carlos has than Juan

120. Spanish

7. "¿A qué hora llegaste esta mañana?" "_____a las ocho." a. Llegué b. Llegamos c. Llego d. Llegó B? 8. "¿Dónde lo viste?" "Lo _______ en la esquina." a. ve b. viste c. vi d. ven A? 9. Mi hermano fue ___ y _______ tescientos dólares para comprar

121. physics

Two objects .25m apart exert a force of 2.5x10 to the -11 power on each other, if thier total mass is 4kg, what is the mass of each?

122. Math

I am writing a Commerical/Advertisement and my audience is single Proportion looking for the perfect match. My Topic I am making the AD is: Proportions: When are two fractions ever a perfect match to each other? I don't understand what my topic is and what

123. society

two ways American institutions have brought oppressed groups closer to the American dream

124. Math

A 3 foot long pole leans against a wall. The bottom is 5 feet from the wall. How much farther should the bottom be pulled away from the wall so that the top moves the same amount down the wall?

125. math

derivative of ln(x^3 + 2)

126. Algebra 2

Add. (1/12x^4 +8/9x^3 +5/8x^2 +5) + (-7/12x^4 +3/8x^2-5. I apologize the previous problem was the incorrect one. This is the correct problem. Thank you.

128. Algebra II

This is a quadratics function question. D: A company charges 20\$ for a subscription to something and gains 30,000 subscribers. It looses 1,000 subscribers for every 1\$ they raise the subscription price. If you could help me, that would be wonderful.

129. Physics

Increasing the voltage across the two plates of a capacitor will produce what effect on the capacitor? a. increase charge b. decrease charge c. increase capacitance d. decrease capacitance how do i approach this one?

130. Chemistry

How much energy is gained by a 40.8g sample of water whose temperature increases from 22 degrees celsius to 35 degrees celsius when left in the sun?

131. Physics

Doubling the voltage across a parallel plate capacitor does not double which of the following? a. the charge b. the electric field between the plates c. the energy stored d. the electric force on the plates e. both a and b is the answer A if not then how

133. chemistry

(10 Points) A water initially contains 50 mg/L of Mg 2+ The pH of the water is increased . until the concentration of hydroxide ion is 0.0005 M. Calculate the concentration (mg/L) of magnesium ion in this water at this pH. Assume that the temperature of

134. CHEMISTRY: DUE TONIGHT. CHECK MY ANSWER?

1. For the simple decomposition reaction below, rate = k[AB]2 and k = 0.40 L/mols. AB(g) A(g) + B(g) If the initial concentration of AB is 1.60 M, what is [AB] after 13.0 s? ANSWER: (.4)(13)=5.2 1/1.6=.625 5.2-.625=4.575 1/4.575= .2185 I tried .22 & .21.

135. analogies

mountain is to fountain as change is to what?

136. physics

Carbon atoms have 6 protons in their nucleus. In nm, at what distance from a carbon nucleus is the electric potential 3.1 V? I'm really confused with this question. I've been trying it for a while and cannot seem to get the right answer.

137. Physics

What is the time lapse between seeing the lightning strick and hearing the thunder 17 km away

138. physics

The lowest temperature possible in nature is a. 0 degrees C. b. 4 K. c. -273 degrees C.

139. physics

During a circus performance, a 67.2-kg human cannonball is shot out of a 17.1-m-long cannon. If the human cannonball spends 0.772 s in the cannon, determine the average net force exerted on him in the barrel of the cannon.

140. college physic

a rifle that has been ‘sighted in' for a 91.4-meter target. If the muzzle speed of the bullet is v0 = 328 m/s, there are the two possible angles è1 and è2 between the rifle barrel and the horizontal such that the bullet will hit the target. One of

141. English

These are the very last sentences. I really hope you can check them. It is really urgent. Thank you in advance. 1) Bitzer embodies the word of facts, in which Mr. Gradgrind believes. Society was regarded as an evil force, which prevented men from behaving

142. english

how do you get the symbolism of a short story?

143. physics

A speeder passes a police car while traveling 130km/h. the police car imediently starts to accelerate at 10m/s^2 until the police car catches up to the speeder. how long does it take the police car to catch up?

144. Chem

as the pressure on a liquid is changed from 100.kPa to 120.kPa, the temperature at which the liquid will boil decease increase or remain the same ?

145. physics

A 5.0 kg bullet hits a 2.0 kg block of wood at 400. m/sec and is imbeeded in it. What will be the velocity of wood and bullet after impact?

146. grammar

Are my sentences of appositive and appositive phrases correct? we planted a small tree, brought by my father, in the park and called it a "family tree." The reunion site, in the empty room, took us hours to clean up.

147. physics

A mass of 0.755 kg is attached to a horizontal spring of constant 403 N/m as shown. The system is compressed a distance xa = 20.8 cm from its equilibrium position and released from rest. The coefficient of friction on the surface is μ = 0.354. The mass

148. physics

A stone has a mass of 6.01 g and is wedged into the tread of an automobile tire, as the drawing shows. The coefficient of static friction between the stone and each side of the tread channel is 0.948. When the tire surface is rotating at 14.7 m/s, the

149. physics

Two banked curves have the same radius. Curve A is banked at 11.0 °, and curve B is banked at an angle of 17.4 °. A car can travel around curve A without relying on friction at a speed of 15.3 m/s. At what speed can this car travel around curve B without

150. Chemistry

What is the pH of a 0.94 M solution of HBrO that is also 0.59 M in magnesium hypobromite, the salt of it's conjugate base? The Ka for HBrO = 2.8 X 10-9.

151. cultural diversity

an early learning center that emphasizes "product" over "process" would

152. geometry

what is the area of parallelogram XYZW with base 4 units and height 6 units?

153. chem

Name the phase transition in each of the following situations and indicate whether it is exothermic or endothermic. (a) Frost appears on a window on a cold winter day. Is frost considered a liquid? I am really confused thanks:)

154. calculus

Suppose A is a positive real number and mA is the average value of (sin(Ax))3 on the interval [0; 2]. Compute mA. what is lim mA as A goes to infinite?

155. chemistry

determine the number of particles for each formular units upon dissolving in water. a0.025m NaNO3, B. 0.025m Pb(NO3)2 CD.C12H22011 D. 0.035m k2S

156. math

I need someone to help explain how this math problem works. I am not sure how to convert this fraction below to arrive at 100.8 degress. 7/25 .360 degrees=100.8 degrees How did this answer of 100.8 degrees come about in this equation?

157. math

integration by parts - Integration of x^2 ln(x^3+2)

Problem of the Week The Problems - Bull's Eye! 02/14/11 In the game of darts, players take turns throwing darts at a circular target like the one shown. The dartboard, as it is called, is typically affixed to a wall and consists of a series of concentric

159. algebra

what is (8.1 x 10^-9) x (4 x 10^2)?

160. math

what is the answer of this problem:-3(a+3b)+(-1)(a+3b)-7+3(3a+b)

162. Math

x^2+19x+12=-48

163. math

A rectangle has a perimeter of 24 and an area of 35 square feet. What is the length and width of the rectangle?

164. MLA

What is an MLA work cited?

165. math

Find the mixed number or rational fraction in lowest terms represented by the repeating decimal. 1.363636

How many dimes are in 4 and three-fifths dollars?

167. math

the quotient of h and -6 is at least 5. in equation form

There are 4 square units in a row of carpeting , and 3 rows in Daniel's finished basement. How many square units of carpeting does he need to cover it completely. Thank you!

169. math

A b C D is a quadralateral- Diagonal AC is drawn assume that angle cab is congruent to cad and ab=ad Is triangle abc congruent to adc?

Identify the attributes of the shapes. Which attributes change according to a pattern?

171. algebra

I need to solve Y+15=18

172. Functions

What is 2x times 200-4x/3? {2x(-4x+200/3)

173. physics

If a washing machine's drum has a radius of 24 cm and spins at 4.1 rev/s, what is the strength of the artificial gravity to which the clothes are subjected? Express your answer as a multiple of g.

174. Math

divide 891 by 40 and write the quotient as a mixed number

175. Religious Studies

Just need sme help with these questions: 1. Timothy 3:16 says that all scripture is inspired by God, what exactly does this mean? 2. If yu were a liberal Christian how would you interpret the creation story in Genesis 1-3? 3. If you were a fundamental

176. help please i need the code

processExpression - this method should take a String in the format: "integer [[+-*/] integer]*]" Your method should then process this expression and return the result as an integer

177. sociology

Marx weber agreed with Marx on the role economic and political conflicts play to change socities. And yet, weber disagreed with Marx about leadership, outcome, and measures of power.

178. Chemistry

Why AgSCN is selectively precipitated before the formation of FeSCN2+? given that Ksp of AgSCN = 1x10^-12 and Kinstab of FeSCN2+ = 7.1x10^-3

179. Math (Help This Will Be on My Test Tomorrow!)

What is 2x times 200-4x/3? {2x(-4x+200/3)

180. Finance

A guy buys a car for \$29,000 and finances it with a four year, 7% APR with monthly payments and compounding. How much of his third payment goes toward repaying principal?

181. Chemistyr

BaCl2(aq) + K2CrO4(aq) BaCrO4(s) + 2 KCl(aq) How many milliliters of 0.1200 M K2CrO4(aq) will react with 0.045 mol of BaCl2(aq)?

182. English

Can you please check these sentences I'm unsure of? Thank you very much 1)Nature was given great importance. (not "a" great importance) 2) He calls his students little pitchers to be filled with facts. 3) Its inhabitants were affected (or the health of its

gcf of 8/5

184. geometry

a cube is placed inside a right circular cylinder. How may cubic feet of water will file the cylinder that has the cube in it? The sides of the cube are 24. The radius of the cylinder in 12 square root of 2 thanks you

185. Microbiology

Gram stains and acid-fast stains of pus showed gram-positive acid-fast rods. What are the possible organisms?

186. physics

a stuntman runs on a roof and without giving himself a vertical impetus, wants to land on another roof, 2m lower and 5m further horizontally. What is the minimal velocity he needs to run at?

187. Chemistry

What volume of dry hydrogen would be produced under standard consitions when 0.250g of magnesium reacts with excess HCl?

188. w.e u want ti bve

what does this represent? 5=3x+5

189. math

tell how many minute have passed and how many degree the minute hand has roteted from 3.33 to 3.45 -----minute pass the minute gand rotates ------degree

190. math

The altitude of a triangle is increasing at a rate of 3 centimeters/minute while the area of the triangle is increasing at a rate of 7 square centimeters/minute. At what rate is the base of the triangle changing when the altitude is 22 centimeters and the

191. math

T SHAPED PLAYROOM WITH A PERIMETER OF 30 INCHES

192. math

A triangle whose sides are 5,12, and 13 inches is similar to a traingle whose longest side is 39 inches. What is the perimeter of the larger triangle?

193. math

is zero a multiple of every number? Find the prime factorization of the number, and write it in exponent form. 198 Compute the value of the given expression. _|8|_ |11-8| Evaluate the expression. -8x + 8y, for x = 8 and y = -1

194. science

I need help doing examples for newton's 3 laws of motion....can you help me?

195. Math

I am writing a Commerical/Advertisement and my audience is single Proportion looking for the perfect match. My Topic I am making the AD is: Proportions: When are two fractions ever a perfect match to each other? I don't understand what my topic is and what

196. math

Find the GCF of the numbers using an appropriate method. 84 and 126 Find the prime factorization of the number, and write it in exponent form. 198

197. ALGEBRA

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 your answer.

198. physics

Suppose the centripetal acceleration of the sample is 7.95 x 103 times as large as the acceleration due to gravity. How many revolutions per minute is the sample making, if it is located at a radius of 3.08 cm from the axis of rotation?

199. Algebra 2

Divide and check. Write your answer using non negative exponents 40x^2y^2/5x^4y^2. Thank you.

200. psyology

describe why it is important to consider each domain in the study of adult development

201. physics

consider the magnitude of the normal force that the pilot's seat exerts on him at the bottom of a dive. The plane is traveling at 273 m/s on a vertical circle of radius 706 m. Determine the ratio of the normal force to the magnitude of the pilot's weight.

202. physics

A lawn roller is rolled across a lawn by a force of 109 N along the direction of the handle, which is 24.2 above the horizontal. If the lawn roller develops 66.1 W of power for 64 s, what distance is the roller pushed? Answer in units of m.

203. math

whats the total surface area of the five sides( rectangular solid)? 20in., 24in, 8in.

204. accounting

a mutual fund has total assets of \$57000000 and liabilities of \$ 8550000. if 15960000 shares are outstanding, what is the net asset value of the fund?

205. math 117

Can you solve this radical expression? 3ã8+2ã8 Can someone help me on this problem, I am very lost.

206. physics

Two objects .25m apart exert a force of 2.5x10 to the -11 power on each other, if thier total mass is 4kg, what is the mass of each?

207. society

consider the level of individual commitment required to foster pluralism in society

208. English

Here are some more sentences I'm still doubtful about. Thank you very much! 1)Industry dealers, who had settle school lessons dedicated to workers' sons, didn't follow the law. 2) (Correction: Factory owners, who were forced by law to teach their

209. spelling

i need words that end with ant and ance but they have to be the same words like distant/distance

Describe major factors related to individual differences that affect job performance. Include factors of multiple intelligence, mental ability, skills, personality traits, and cultural behavior. Utilize at least one outside source in this discussion

211. us history

The goal of America's containment policy was to?

212. child care

2. The ability to communicate feelings is one of the goals of

213. language arts

In word part break downs the word Comedian contains the word parts comed and ian meaning?

214. Math

How do you multiply this polynomial (3m+4n)2

215. English

Here are the last sentences I forgot to include before. Thank you very much. 1) Natural behavior, that is to say irrational and unrestrained, was considered good in contrast wt rational behavior. 2) Humble people were considered unspoilt by civilization.

216. chemistry

how much heat is required to raise the temperature of one mole of NaCl(s) by 15 degrees celsius at constant pressure

217. chemistry

How do you calculate, as an example, [Fe3+] which remained unreacted in a solution, i.e. the equilibrium molarity of Fe3+? The actual question being, on my part, what equation would you use to figure this out? How would you solve this?

218. Physics

When a certain spring is stretched beyond its proportional limit, the restoring force satisfies the equation F=-kx+βx^3. If k=8.5 N/m and β=105 N/m^3, calculate the work done by this force when the spring is stretched 0.114 m. My attempt: F=

219. Math

Solve each system x + 3y = 6 4x - 5y = 7 I need to know what x and y equal??

220. math

I don't understand the rules for adding and subtracting postive and negative ,can you please explain it to me? im having a test

221. math

can anyone tell me what 10^8 is?

222. chemistry

a. trans-4-octene is reacted with H2O in the presence of H+. Do not show stereochemistry draw hydration product formed

223. MATH

how can you tell the fraction and the angle measure of rotational symmetry in an octogon. i need the smallest turn that matches the original figure hope i made sense!!!

224. Chemistyr

BaCl2(aq) + K2CrO4(aq) BaCrO4(s) + 2 KCl(aq) How many milliliters of 0.1200 M K2CrO4(aq) will react with 0.045 mol of BaCl2(aq)?

225. BIOLOGY

Why are seeds considered a more effective means of reproduction than spores in a dry environment?

226. physics

An airplane with a speed of 94.9 m/s is climbing upward at an angle of 63.2 ° with respect to the horizontal. When the plane's altitude is 743 m, the pilot releases a package. (a) Calculate the distance along the ground, measured from a point directly

227. 7th grade math/distributing property homework

I need help with the steps of one question: -8(n-2)+4(3-6n)= (-36). Trying to find out what 'n' is

228. CHEM 11 !

What mass of oxygen is contained in 10.5 micromoles of Cr(NO3)3 * 6H20?

229. math

1.5=3/y what does y=

230. English

Can you please suggest internet sites where I can find fill-in-the-blank exercises to practice computer-related terminology. Thank you. Here are some more sentences I'd like you to check. 1) The family was conceived as a patriarcal unit. 2) Women had the

231. Math

Find the following function y=[(x-5)(4x+3)]^5 I arrived at 5(6x-2)[(x-5)(4x+3)]^4 The answer is 5(8x-17)[(x-5)(4x+3)]^4 but I am not sure how they got the 8x-17

232. The World History

I need help with the answers to exams of this subject please anyone can,, on exams007678,007680,007681,007682 please send as soon as possible thanks to the one that is willing to hlep..

233. math

a river flows at 2km/hr and sarah takes 6 hrs to row 16km up the river and 16km back.how fast did she row?

234. AP Biology

the process of making a complimentary copy of the DNA to form RNA is called?

235. Math/Finance

A guy buys a car for \$29,000 and finances it with a four year, 7% APR with monthly payments and compounding. How much of his third payment goes toward repaying principal?

236. Accounting

how do i record a refund on a accounting equation?

237. statistics

A researcher randomly selects 37 subjects and administers an attitude test regarding a product. Their mean is 22 and their standard deviation is 2.4. Construct the 90% confidence interval for the mean score of all such subjects

238. LA Writing

Can somebody score my 200word essay? Its not exactly 200 words. What it means to be successful Being successful has a different meaning to everyone. One would think that this is a very important thing in life. People strive for success, but not everyone

Could someone provide me with a simple explanation of how the Doppler Effect is used to determine the speed and direction of moving object

240. English

I still have a few more doubts on some sentences. I hope you still have time to check them. 1) Victorian values consisted in (better: implied) the possession of a comforable house, chariable activity (not actions?) and attending the church regularly. 2) As

241. social problems

Increase in divorce rates over the last century related to :A)rejection of the ideology of the "good"family B) increasing financial independence of woman c)increasing abuse and conflict in families d) change in social norms toward greater acceptance of

242. Calculus

Identify any x-values at which the absolute value function f(x) = 6 |x + 7|, is not continuous: x = _____ not differentiable: x = _____

243. calculus

how do you solve the folowing question giving respect to the given variable x 2(3 x + a)-b(2-x)=3(x+1)

244. algerbra/math

Jolene has twice as many games as Juan. Write an algebraic expression that shows how many games Jolene has.

245. algerbra/math

Don has three times as many games as Carlos. Write an algebraic expression that shows how many games Don has

246. algerbra/math

Don's little sister Nadia has half the amount of games Don has. Write an algebraic expression that shows how many games Nadia has.

247. algerbra/math

Leo has 1/5 of the amount Don has. Write an algebraic expression that shows how many games Leo has

-7.1+18.6=

249. math

What is 10-(-5)=?

250. math 117

How about this one can you help me out on it?? 5*square root of 4 + 10*square root of 4

251. soc 120

Can countries such as the United States continue to grow and develop without causing environmental damage?

252. math 117 for bobpursley

How about this one can you help me out on it?? 5*square root of 4 + 10*square root of 4

253. math

What is the equation of the line that contains the points with (x,y) coordinates (–3,7) and (5,–1) ?

254. Chemistry

Pb(C6H2O2)2+KCl= ???

255. math

what is the radius of a sphere if the volume is 2123 cubic cm

256. PHYSICS

A person who weigh 500N climbs a flight of straight from the ground to the 4th floor of a building in 40sec. If the height of 4th is 10m find A... power in watts b.....power in Hp

257. binominals

what is (y+7)x(y+3) ?

258. FRENCH

Est-ce que tu preferes aller a Forte-1.De-France, a Annecy ou a Quebec? Pourquoi? I do not know how to answer this question, what I want to say is that: I would prefer to go to forte-de-france, a Annecy, and a Quebec because they are all beautiful places

259. Chemistry

what was the first sample in the ChemQuandry and where is it used

260. Physical Science-Sould you please check my explana

If I put my finger in a glass of water or a glass of oil, which would make my finger look bigger and why? I think it would be oil because of the why the light is refracted-a thicker medium would bend the light more than the water

262. art

ok tHE ARRANGE MENT OF THE SUBJECT MATTER OR THE SHAPES IN A PICTURE IS ~_ _ _ _ _ _ _ _ _ _ _.

263. French

i know size adjectives come before nouns in french, but what if it's in a metaphorical sense? (for example, short life--would it be vie courte or courte vie?)

264. social studies

In the Country of haiti, there was an Earthquake. The International Red Cross came to help with this disaster. With Foreign Policy Makers (Deciders) Which decider would follow this example; President, Secretary of State, national security advisor,

265. Physics

how high does a stone rise if it is initially thrown at a rate of 15m/sec

266. Science

What happens first in a lunar eclipse?

267. Traveling(saving money)

how much are plane tickets to: india england

268. math

the quotient of h and -6 is at least 5. in equation form

269. math

how many outcomes do you get when you have 1 shirt 1 sweater 1 pants

270. english

what does "services rendered" mean? like work to be done?

271. math

into a rectangle could make two, two could do four in 3 would be 6 and so on. The question is: Describe how to find each "next nunber" of rectangles, without drawing the figure:

272. Math

Solve each system x + 3y = 6 4x - 5y = 7 I need to know what x and y equal??

273. Math

How do you calculate 420 divided by 5/8?

274. math 95

2+x-18/(x-3)-(x^2-9)

I NEED HELP!

276. math

how many weeks are in a year

277. maths, economics, game theory

1. What is a degenerate game? 2. Is the following game degenerate or not, justify. 3. Find all nash equilibria in the game in pure or mixed strategies a b c d T 4,5 1,4 2,0 1,2 B 6,0 0,1 1,3 0,2

278. physics

A speedboat starts from rest and accelerates at +1.69 m/s2 for 7.18 s. At the end of this time, the boat continues for an additional 4.55 s with an acceleration of +0.468 m/s2. Following this, the boat accelerates at -0.657 m/s2 for 8.38 s. (a) What is the

279. Math

into a rectangle could make two, two could do four in 3 would be 6 and so on. The question is: Describe how to find each "next number" of rectangles, without drawing the figure:

280. english

25 independent words

my original question was: how do i figure this out?? How much heat does your body lose when 2.46 g of sweat evaporates from your skin at 25°C? chem - DrBob222, Tuesday, February 22, 2011 at 10:52pm q = mass water x delta Hvaporization. chem - Rebekah,

282. geometry

If the area of a square is 100 cm. What is the area of each triangle produced if you draw two diagonals in the square?

283. math

How do angles in a quad add up to 540. when split into triangles

284. math

How do angles in a quad add up to 540. when split into triangles

285. world history

what was the first hr on the titanic atmoshere like

286. Medical Coding, Part 1

10. Which of the following codes is used for the diagnosis "closed dislocation of the sternum"? A.839.61 C. 839.71 B.839.8 D. 839.9 11. A 50-year-old new female patient has had a sore throat and head congestion for five days. The physician performs an

287. Bentonia Gibbs

Choose an appropriate scale and interval size for a frequency table that will represent 2341, 2590, 2718,2453, 4160, 2635, 2734,3362, 2744, 2485, 3395, 2350, 4000, 2964, and 2600.

288. math

\;\normalsize{3log_a 4 - 2log_a 3 + 5log_a 1 }

289. math

\;\normalsize{3log_a 4 - 2log_a 3 + 5log_a 1 }

290. Calculus

Find the tangent approximation for sqrt(5+x) near 3

291. math

find the distance between the two points(7,3)(1,5)and(8,2),(4,1)

292. math

Jake has 3/4 of a dollar. Max has 1/10 of s dollar do they have more or less then \$1.00 in all?

293. gr4math

how do u rotate a triangle? using its coordinates and a protractor?

294. basic math

how can i solve 5/30+3/40+1/8

295. MATH

regular pentagon Side length(inches) 6 If its 6 what is the perimeter( inches)

296. phyiscal science

The process by which the sun gives us heat is

297. A Level Law

fred has been arrested for murder what are his rights at police station and are they adequatly protected during detention searches and interviews

298. economics

The producer price index measures

299. social studies

explain how home,community,school all work together for children?

300. math

what is unit rate"?!

301. Math

|x + 2| + |2 - x| < 8

302. reimbursement methodology

Differentiate between the official coding guidelines for using V codes in an inpatient and outpatient settong

when was phillis wheatly born?

304. Intermediate Algebra

I am suppose to do a graph using these numbers: 6x - 2y = 2 9x - 3y = 1 but I cannot get the graph link to come up any suggestions.

305. physics

Suppose the radius of the room is 3.97 m and the speed of the wall is 12.0 m/s when the floor falls away. The source of the centripetal force on the riders is the normal force provided by the wall. (a) How much centripetal force acts on a 56.0 kg rider?

306. Psychology

Evaluations of a particular belief, person, object, or idea describe a person’s: (Points: 5) attitudes. motivation. predispositions. biases. was thinking D im not sure can someone help please?

307. science

what is the force used to accelerate a 50g toy car at a rate of 4m/s/s?

308. social problems

A recent development that has reduce the payoff of education is the:A) disparity between educational attainment and number of jobs available for skilled workers b)fact that best education is available only to those from higher socioeconomic strata

309. math

A piece of cloth that measures 1 yard in length is about the same length as cloth measuring___________ in length.