# Questions Asked onOctober 24, 2012

1. ## Physics

A conductor of length 2m carrying a 1.5A current experiences a force of 2.2 N. What is the magnitude of the magnetic field that acts perpendicular to the flow of current in the conductor? 0.73 Tesla 6.60 Tesla 0.34 Tesla 0.61 Tesla

2. ## MEC

two charges repel each other with a force of 0.1N when they are 5cm apart. Find the forces between the same charges when they are 2cm and 8cm apart.

3. ## statistics!

1) Entry to a certain University is determined by a national test. The scores on this test are normally distributed with a mean of 500 and a standard deviation of 100. Tom wants to be admitted to this university and he knows that he must score better than

4. ## statistics

A university wants to estimate the average distance that commuter students travel to get to class with an error of ±3 miles and 90 percent confidence. What sample size would be needed, assuming that distances are normally distributed with a range of X = 0

5. ## Physics

What happens to the atomic number of the daughter nucleus if it is formed after the emission of the beta particle? The atomic number remains the same. The atomic number increases by two. The atomic number increases by one. The atomic number decreases by

6. ## Macroeconomics

Cannot attach graph! a. If the actual price level exceeds the expected price level reflected in long-term contracts, real GDP equals _______ and the actual price level equals _______ in the short run. b. The situation described in part (a) results in a(n)

7. ## chemistry

A scientist measures the standard enthalpy change for the following reaction to be -2923.0 kJ : 2C2H6(g) + 7 O2(g) 4CO2(g) + 6 H2O(g) Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation

8. ## Chemistry

#25 The Ksp of nickel(II) hydroxide, Ni(OH)2, is 5.84 × 10-16. Calculate the molar solubility of this compound.

9. ## Physics

A metallic surface emits electrons when it is irradiated with a yellow light source of power 25 Watts. What happens to the emission of the electrons if one yellow light source is replaced by two violet light sources of same power? The number of emission of

10. ## Physics

The maximum force a grocery sack can withstand and not rip is 250 N. Calculate the greatest acceleration 20 kg of groceries can be lifted from the floor to the table such that the sack does not break.

11. ## science

How tall is the tree if the sun is at a 53° angle above the horizon and the shadow is 8.0 meters long?

12. ## Math

A box of chalk and 2 staples cost $10. Three box of chalk and 2 staplers cost$18. Find the total cost of 1 box of chalk and 1 stapler.

13. ## chemistry

A sample of orange juice has a pH of 3.44. Its [H3O+] is

14. ## Math

An eastbound train and a westbound train meet each other on parallel tracks heading in opposite directions. The eastbound train travels 12 miles per hour faster than the westbound train. After 1.5 hours, they are 174 miles apart. At what speeds are the two

15. ## Physics

A photocell shows photoelectric effect when green light shines on it. Which of the following is correct if a green light is replaced by a blue light? Electron emission would get stopped. Electrons are emitted with more velocity. Electrons are emitted with

1. If a number is not a rational number, then it is _____. (1 point) an integer an irrational number a whole number a radical 2. A picture frame is 12 inches long and 9 inches wide. In inches, what is the diagonal length of the picture frame? (1 point) 21

17. ## Chemistry

In the experiment 0.500 g of copper reacted with oxygen to give 0.563 g of copper oxide. What is the empirical formula of the oxide expressed as a chemical formula?

18. ## Finance

Your friend claims that he invested $5,000 seven years ago and that this investment is worth$38,700 today. For this to be true, what annual rate of return did he have to earn? Assume the interest compounds annually.

30. ## Algebra 1

The larger of two consecutive integers is 7 greater than twice the smaller. Find the integers. A) 4,5 B) -8,-9 C) -5,-6

31. ## Math

There are 10 tennis balls, 2 soccer balls, and 8 basketballs. What fraction in simplest form are tennis balls?

32. ## math

c ezicol 2 thi r ;r

33. ## English

1. He lied me that you were a fine gardener. 2. He lied that you were a fine gardener. 3. He lied to me that you were a fine gardener. 4. He lied. 5. He lied you were a fine gardener. (Are they all grammatical? Which ones are wrong grammatically?)

34. ## Math

How long will it take a car traveling 65 mph to pass a car traveling 45 mph if the slower car had a 2 hour lead?

35. ## math

how to solve identity property,2nd grade

36. ## physics college

A dog sled is pulled at an angle of 30 degrees with the horizon using a tension of 450N. If the sled has a mass of 50kg, then find the recoil, forward force and acceleration (if any).

37. ## Math

(a) Find the number c such that the limit below exists. Limit as x goes to -2 of: x^2+cx=c-3/x^2+2x (b) Calculate the limit for the value of c in part (a).

38. ## Physics

Under the influence of its drive force, a snowmobile is moving at a constant velocity along a horizontal patch of snow. When the drive force is shut off, the snowmobile coasts to a halt. The snowmobile and its rider have a mass of 136 kg. Under the

39. ## physics

State the surface powers required to produce the following lenses with +6.25D front curves. a. -0.50 DS b. +0.50 DS c. +1.75 DS

40. ## pre-cal

aj uses a lingshot to launch a rock straight up from the a point of 6 ft. above ground level with an initial velocity of 170 ft per second. A) find an equation that models the height of the rock t seconds after it is launched. b) what is the maximum height

MgO + HNO3 =

42. ## Physics

A heavy freight train has a mass of 13200 metric tons. If the locomotive can pull with a force of 755000N, how long does it take to increase it's speed from 0 to 95.5 km/h?

2. Shelly sews a blanket that has an area of 170 square feet. It has 30 square blocks, each the same size. What is the approximate length of each side of a block? (1 point) 1 foot 2 feet 3 feet 4 feet 3. Which of these numbers can be classified as

44. ## Computers

I know that there are a whole bunch of proxy servers out there but I can't seem to find one that will help me get around the system. I am wanting to use this proxy address to help me access school resource websites, but they're all blocked. HELP!!!! Please

45. ## algebra 1

Natalie performs a chemistry experiment where she records the tenperture of an ongoing reaction.The solution is 93.5 C after 3 minutes;90 C after 5 minutes,84.8 C after 9 minutes; 70.2 C after 18 minute; 54.4 C after 30 minutes;42.5 C after 37 minutes; and

46. ## physics/light reflection

A light of ray is incident at an angle of 58degrees on the plane surface of a block of glass of refractive index 1.60. Some light is reflected on the other side of the normal at the same angle as the angle of incidence. Find: a.the angle between the light

47. ## AP Physics

To test the performance of its tires, a car travels along a perfectly ﬂat (no banking) circular track of radius 120 m. The car increases its speed at uniform rate of at ≡ d |v| dt = 2.99 m/s 2 until the tires start to skid. If the tires start to skid

48. ## Physics

A 69 kg swimmer free-falls off a 10.0 m diving platform. The diver comes to a stop 2.7 m below the water's surface. What is the magnitude of the force exerted by the water on the swimmer. (assume a positive direction is up) I calculated the force on the

49. ## texas southern university

A periodic wave has a frequency of 8.9 Hz. What is the wave period? ??__s

50. ## texas southern university

A quantity of gas in a piston cylinder has a volume of 0.544 m3 and a pressure of 200 Pa. The piston compresses the gas to 0.126 m3 in an isothermal (constant-temperature) process. What is the final pressure of the gas? ??__Pa

Is bluntbomb corporation. Good. Investment

52. ## math

9/20 how do I multiply & simplity

53. ## physics

State the surface powers required to produce the following lenses with +6.25D front curves. a. -0.50 DS b. +0.50 DS c. +1.75 DS

54. ## math

how do i calculate these ratios 5,474 to 1,850 but the total is 7,324 do i need to do anything with the total or is it right??????

55. ## Chemistry

#26 The Ksp of lead(II) carbonate, PbCO3, is 7.40 × 10-14. Calculate the solubility of this compound in g/L.

56. ## Chemistry

#24 At a certain temperature, the solubility of strontium arsenate, Sr3(AsO4)2, is 0.0660 g/L. What is the Ksp of this salt at this temperature?

68. ## 5th grade math word problems

if we need 5 oranges to make 3 small glasses of orange juice, how many small glasses of juice can we make with 100 oranges?

69. ## Chemistry

Suppose you dissolve 10 grams of HCl gas in 250 ml of water initially at 25 C, what will the final temperature of the solution be?

70. ## Social Studies 8R - HELP!!!

Why do you think some people called Rockefeller a Robber Baron? i really don't know why.....??????? i find him more of a an industrialist please help!!!

71. ## statistics!

The following data represents the body mass index in a random group of twelve diabetic patients in a clinic. 18, 28, 31, 14, 25, 21, 22, 28, 35, 29, 27, 22. What is the z score of the person with the lowest and highest body mass index?

72. ## math

Susan is 5 years older than her sister jennifer the sum of their ages is 51 write and equation and find the ages of both sisters

73. ## MAth

A bOY goes on VacATION with fivE shirts.each day HE used TWO diferent shIRts EACH day. HOW MANy DAYS will IT TAKE him TO USE thE FIVe SHIRTS WITHOUT REPEATINg the pattern

74. ## Algebra

Year, t Sales, S(t) 1 62 2 246 3 664 4 1579 5 3258 6 8430 7 14,532 (c) If S−1 exists, find S−1(3,258).

75. ## physics

A ferry is crossing a river. The ferry is headed due north with a speed of 2.4 m/s relative to the water and the river’s velocity is 2.3 m/s to the east. a) What is magnitude of the boat’s velocity b) Find the direction in which the ferry is moving

76. ## Calculus

What is the point of inflection of the function f(x)=x^3-8x^2+5x+50? Is the local extrema at f(1/3)=50.8 max and f(5)=0 min? For the second derivative I got f(x)=6x-16 and then got x=16/6 when set to zero.

What is the solution to -75 (find the square root) to the nearest integer? 9 8 -8 -9 -75 square root is 8.660254 wouldn't that be rounded to -9?

78. ## child care

if a child repeats words over and over

79. ## CHEMISTRY

to resolve an object in an electron microscope the wavelength of the electrons must be close to the diameter of the object. What kinetic energy must the electrons have in order to resolve a protein molecule that is 7.90 nm in diameter? Take the mass of an

80. ## Chemistry

How many grams of H2SO4 will be needed to react with 69.3gof NaOH? Can you list steps so I can understand this? Thanks

81. ## science

what are some interactions that can take place when a beam of light hits a glass tank and then enters the water

82. ## Math

Jose washed 3/10 of the windows on his house Saturday morning. He washed another 3/5 of the windows that afternoon. What fractional parts of the windows are not washed 3/10?

83. ## physics

The drawing shows two boxes resting on frictionless ramps. One box is relatively light and sits on a steep ramp. The other box is heavier and rests on a ramp that is less steep. The boxes are released from rest at A and allowed to slide down the ramps. The

84. ## Math

3/4+1/8=7/8? 1/2+1/3=5/6? 11/12-2/3=1/4? 7/10=1/2=1/5?

85. ## Physics

The drawing shows two frictionless inclines that begin at ground level (h = 0 m) and slope upward at the same angle θ. One track is longer than the other, however. Identical blocks are projected up each track with the same initial speed v0. On the longer

86. ## World History Honors

What kinds of people sailed to the New World in the 1400s?

87. ## math

I am a 3 digits number less than 200. the tenths place is 2x more than the ones place. the number in the ones place is 2. what number am i?

88. ## Subtracting 3 digit numbers

Jill is going on a trip from chicago to omaha to tulsa.Bill will travel from dallas to omaha.How much farther will jill travel than bill?

89. ## physics

A computer is reading data from a rotating CD-ROM. At a point that is 0.0382 m from the center of the disk, the centripetal acceleration is 118 m/s2. What is the centripetal acceleration at a point that is 0.0791 m from the center of the disc?

90. ## Maths

A room is 3 meters wide and has a volume of 60 cubic meters.calculate the floor of the room

91. ## Physics HELP!!

Two horizontal forces F1 and F2, are pulling an object of mass 3.05kg from two opposite sides. F1 pulls to the right and F2 pulls to the left. The magnitude of F1 is 99.2N. The object moves strictly along the horizontal x-axis, which we chose as positive

92. ## Ap Chemisty

If .237 mol of ammonia react with 56g of iodine, how much Nitrogen triiodid, in grams, is produced?

93. ## Physics HELP!!

Forces of 11.1N north, 19.9N east, and 14.0N south are simultaneously applied to a 3.62kg mass as it rests on an air table. What is the magnitude of its acceleration? b) What is the direction of the acceleration in degrees? (Take east to be 0 degrees and

94. ## information literacy

1. which article title represents a citation under the news results? A)priceton paleontologist produces evidence for new theory on dinosaurs extinction B)chunk of death dealing with astroid found C)second crater points to killer comets D)extinctions tied

95. ## chemistry

MgO + HNO3 = ?

96. ## math homewok

There are nine coins on the table , 5 nickels , 3 quarters and 1 dime. Tom , Bill and Drew each pick up three coins. Bill has 25 cent more than Tom. Drew has as much money as Tom and Bill together . What three coins Drew to pick up? my answer: Drew ===)2

97. ## Algebra 1

Change the math sentence, 25+27+29 greater than or equal to 81, into a verbal phrase using terminology consecutive numbers.

98. ## Physics

A stubborn, 191.0kg mule sits down and refuses to move. To drag the mule to the barn, the exasperated farmer ties a rope around the mule and pulls with his maximum force of 854.0N. The coefficients of friction between the mule and the ground are s=0.790

99. ## Physics- Projectiles

A marlin jumps out of the water with an initial velocity of 5.0 meters per second at an angle of 80 degrees above horizontal. Approximately what maximum height will the marlin reach during it's flight?

100. ## physics

A speed skater goes around a turn that has a radius of 29 m. The skater has a speed of 14 m/s and experiences a centripetal force of 450 N. What is the mass of the skater?

101. ## Math

The table shows men's shoe sizes in the United States and the corresponding European shoe sizes. Let y = f(x)represent the function that gives the men's European shoe size in terms of x, the men's U.S. size. Men's U.S. shoe size, Men's European shoe size 8

102. ## algebra 1

In 1975, when the United Nations was formed, there were 51 member nations. In 1987, there were 159 member nations. Write an equation that gives the number of nations in the UN, y, in terms of the year, t. Let t=0 correspond to 1945 and assume that

103. ## algebra

12 + 24 (10 - 4) (9 - 7) - 17

105. ## algebra

find the number of decibels for the power of the sound. round to nearest decibel. a rock concert 5.34*10^-6 watts/cm^2 D= Db

106. ## physics

A light of ray is incident at an angle of 58degrees on the plane surface of a block of glass of refractive index 1.60. Some light is reflected on the other side of the normal att he same angle as the angle of incidence. Find: a.the angle between the light

107. ## math

an airplaine has an altitude of 20,000 feet. it climbs another 5,000 feet to avoid a storm. What integer expresses the position of the airplane compared to ground level?

108. ## Comment

Excuse me, but I really need help on the science question if you could help me that would be nice!

109. ## Physics

At the instant the traffic light turns green, an automobile starts with a constant acceleration a of 2.3 m/s2. At the same instant a truck is 11.7 m down the road and traveling with a constant speed of 10.4 m/s. (a) How far beyond the traffic signal will

110. ## math

what could i use to determine the probability that i will get at least 8 of 15 true or false questions right?

111. ## math

My number has the same number of thousands as tens. It has three hundreds and no ones. The sum of its digits is 11

112. ## Zion Chapel

explain how to find 40x50 usine mental math?

113. ## math

emelio has 9 coins that total to be 2.21 he does not have a dollar coin what are the coins?

114. ## Math

7/10-1/2=1/5?

115. ## math

Calculate the mass percent ({\rm m}/{\rm m}) for the solute in each of the following solutions: 95g of {\rm NaOH} in 365g of {\rm NaOH} solution

116. ## literature

Reflecting on this week’s literary readings, as well as your own reading experiences, identify at least one major similarity and one major difference between the forms of the short story and the poem. How do the differences between these literary forms

117. ## calculus

(a) Find the number c such that the limit below exists. Limit as x goes to -2 of: x^2+cx=c-3/x^2+2x (b) Calculate the limit for the value of c in part (a).

118. ## math

Evaluate: 4.84 x 39 + 61 x 4.84

119. ## Math

1.describe the meaning of the number -.1 in the formula, in terms of its meaning in relation to the profit.

120. ## physics

A 1.50-kg block slides on a rough, horizontal surface. The block hits a spring with a speed of 2.07 m/s and compresses it a distance of 12.2 cm before coming to rest. If the coefficient of kinetic friction between the block and the surface is μk = 0.577,

121. ## Tax question

The same filing requirements that apply to individuals determine if a final return must be filed for a person who dies during the year. True or false My answer would be True is it right. If I'm wrong can u explain.

122. ## Chemistry

What is Daltons atomic model look like?

123. ## World History

I need to find a current event that is odd or weird. Post links!

124. ## Chemistry

Convert 29.8 atm into torr I did this 29.8(1/760) and got 22648 but its not going online as correct

14. If a right triangle has one of leg measuring 27 inches and one leg measuring 23 inches, what is the length of the hypotenuse to the nearest inch? (1 point) 36 14 3 2 15. The description of a TV is based upon the diagonal length. If the height of a TV

126. ## physics

standing on the ground, you throw a 0.55 kg lunch bag at a friend, you manage to throw the bag straight up (vertically) using 50 J of energy to throw it there is also a crosswind of 0.5 m/s. How high will the bag travel before all of its kinetic energy is

127. ## Simple Interest Applications

An investor purchased a 91-day, $100,000 T-bill on its issue date for$99,326.85. After holding it for 42 days, she sold the T-bill for a yield of 2.72%. a)What was the original yield of the T-bill? b)For what price was the T-bill sold?

128. ## science

How to count atoms ?

129. ## World History Honors

What kinds of people sailed to the New World in the 1400s?

130. ## Physics

A 69 kg swimmer free-falls off a 10.0 m diving platform. The diver comes to a stop 2.7 m below the water's surface. What is the magnitude of the force exerted by the water on the swimmer. (assume a positive direction is up) I calculated the force on the

131. ## Biology

1)Animal cells prefer to be in isotonic solution, while plant cells prefer to be in hypotonic solution. Explain what this means and why it is so. 2.) In terms of Gibbs free energy, what does “unstable” mean? Also, give at least two additional ways to

132. ## Math

u^2+3u/u^2+2u-3 X u^3-u/u^2-u-2

133. ## scientist

how could measuring the orbit of a comet help scientists understand when it will next be visible on Earth?

134. ## algebra

WRITE THE EQUATION REPRESENTED BY THE MODEL. XXX + + + = XX - - -

Hi! Sorry to keep bothering you with questions. Can you help me on 6 and 13 please? I cannot find the answers. Also, can you check my answers to 11 and 19? Thanks! 6. If point A is located at (0, –8) and B is located at (4,–5), what is the distance

136. ## Algebra 2

When dealing with imaginary and complex numbers, are there 2 solutions? I.e.: x^2=4 x=2,-2 For: x^2=-4 x=2i or -2i ? (Is there a 2i and -2i, like for real numbers?)

137. ## Chemistry

Given the known compounds--- CO2,KF,MgO,CaCL2,Na2O,Ga2O3 and AICl3- predict tbe formula for the following combinations of elements. 1.Si and O ____ 2.Ba and S______ 3.K and S________ 4.B and F_________ 5.Li and Br________ 6.Sr and O__________ Thanks for

138. ## Algebra

write the following in standard form: slope= 2/3 y- intercept= 3

139. ## math

How do i subtract integers? Having trouble with problems like -14-(-5)-8

140. ## Math

Let d(t) be the shortest distance between Earth and the nearest other planet as a function of time t (where t is in years and t = 0 is noon on January 1, 1000 A.D., say). Is d continuous? Why or why not?

141. ## art

what are the three primary colors.

142. ## Physics

A fully charged 90-µF capacitor is discharged through a 60-Ω resistor. How long will it take for the capacitor to lose 80% of its initial energy? I know energy is given by E(t)=q(t)^2, but beyond that I really don't know how to solve this. Any

143. ## MATH

From experience, the manager of Kramer's Book Mart knows that 40% of the people who are browsing in the store will make a purchase. What is the probability that among ten people who are browsing in the store, at least four will make a purchase? (Round your

144. ## College Chemistry

Calculate the heat in joules needed to warm 225g of water from 88.0 degrees Celsius to its boiling point 100.0 degrees Celsius

145. ## algbra

Find g:=ged[389,222] and a,b E Z such that g=a.389+b .222

146. ## science

A reaction took place between a magnesium and florine in a large empty container if attraction and repulsive between these atom are equal at a distance of 0.001*10^-10m, calculate the couloumbic force between two atoms.

147. ## German

I need Some more opinions on my paragraph for an essay of mine. Any help appreciated Mein guten Freunds name ist Meaghan. Sie ist Freundlich Klein Intelligent und Tolerant. Sie hat langes blondes Haar. Sie spricht und liest Spanisch. Ich gehe herumhägen

148. ## COLLEGE MATH

ANDY PUT DOWN 1/14 INCH THICK SUBFLOORING.nEXT HE NAILED DOWN 3/16 INCH THICK UNDERLAY.ON TOP OF THAT , HE NAILED DOWN 4/14 INCH THICK HARDWOOD FLOORING.hAW THICK WAS THE RESULT?

149. ## Physics

12th grade physics ap question. A baseball with a mass of 120 g is hit 21.8 m into the air. The ball is caught by the third baseman 2.5 m above the ground. What potential energy did the ball develop at its highest point? How much potential energy did it

150. ## math

how could you use the product of 108 and 4 to find the product of 324 and 4?

151. ## Math

An airplane flying at a speed of about 100 mph was once overtaken and passed by a flock of sandpipers! Suppose that a flock of these birds can fly at 110 miles per hour with a certain wind and at 90 mph against it. If they fly a certain distance with the

152. ## physics

A light of ray is incident at an angle of 58degrees on the plane surface of a block of glass of refractive index 1.60. Some light is reflected on the other side of the normal at the same angle as the angle of incidence. Find: a.the angle between the light

153. ## ap chemistry help!!!!

Ive been absent from class because of the flu so i don't have a clue how to figure these out! Help! due tomorrow at 12! 1).Suppose that 135 g of ethanol at 23◦C is mixed with 255 g of ethanol at 75◦C at constant atmospheric pressure in a thermally

154. ## Spelling

Donna's __________ countenance in no way showed her inner nervousness.< Which word best fits this sentence: pensive; peril; renounce; serene; solace; or tranquillity?

155. ## Spelling

Is the word proclaim a synonym of renounce?

Mr. olsen has classified the charities to which he gives money to into 3 different groups. Each charity in the 1st. group will get $1 . Each charity in the 2 nd. group will get 9 times as much or$9 . Each in the 3 rd. will get 9 times as much as each in

157. ## math

Jim has grades of 84, 65, and 76 on three math tests. What grade must he obtain on the next test to have an average of exactly 80 for the four tests?

158. ## Physics

During a violent thunderstorm, hail the size of marbles (diameter = 2.10 cm) falls at a speed of 37.0 m/s. There are estimated to be 175.0 hailstones per cubic meter of air. Assume that, as for ice, 1.00 cm³ of hail has a mass of 0.920 g. What is the mass

159. ## math

i have to solve this how I got y(3)+5y(2)-4y-20?

160. ## sociology

Smiling and making polite remarks to people we do not like is an example of: A) making another feel embarrassment. B) exercising power over another. C) idealizing a personal performance. D) using tact.

161. ## Math

What multiplication fact can be found using the arrays for 2x9 and 5x9

162. ## Is the nucleus composed of protons and neutrons?

or protons and electrons?

x is defined as one more than the number of digits in the number x . For example , 1000 = 5. For what value of x wil x = x ?

165. ## chemistry

1. Compare the effects of adding the strong acid & base to the pH of water vs. the acetate and phosphate buffers.

166. ## BC Calculus

Use linear approximation to estimate sec^2(pi/4 + .025) Need help quickly please!! :)

167. ## eco365

Write a paper of no more than 1,750 words analyzing the current market conditions of the organization or industry you selected. Address the following topics: • Market structure • Effect of new companies entering the market • Prices • Technology •

168. ## Chemistry

The addition of a non-volatile, non-electrolyte will increase the amount of your vapor found above the solution over that of the pure liquid? (True or False)

169. ## Math

Diver A is lowered 28 feet below the surface of the ocean. She swims down another 6 feet. What integer expresses her position compared to the ocean's surface?

170. ## SAT

Can someone critique an SAT Essay that I post? I would really appreciate it. Thanks.

171. ## Algebra (Graphing Functions)

Consider the following function. f(x) = −3x if x < −2 x2 if −2 ≤ x < 2 −3 if x ≥ 2 Please help me find the intervals on which f is increasing, is decreasing, or is constant(in interval notation). As well as the x and y intercepts for the graph.

172. ## Calculus

A baseball diamond is a 90 foot square with the pitcher's mound at the square's center. A runner races for home at 25 ft/sec. How fast is his distance from the pitcher changing as he crosses the plate?

192. ## Liberal Arts Mathematics

Could you show me the steps on how to figure out the (h,k) radius?

193. ## math

Karl piled twelve 1" cubes in three layers on top of a square made with four 1" cubes. What shape is the structure that Karl made?

194. ## drafting

how to take 5/16 and make a 1/4 scale on paper

195. ## prob and stats

11. Assume that the population of heights of male college students is approximately normally distributed with mean m of 72.15 inches and standard deviation s of 6.39 inches. A random sample of 96 heights is obtained. Show all work. (A) Find (B) Find the

196. ## Math Help

I posted this earlier but no one answered. :( 1. Given a scale factor of 2, find the coordinates for the dilation of the line segment with endpoints (-1,2) and (3,-3). a. (2,4) and (6,6) b. (2,4) and (6,6) c. (-2,4) and (6,-6) d. (2,-1) and (-3,3) 2. Given

198. ## math

Ann makes 4 signs in 1 and 1/4 hours and if he worked 6 2/8 hours how many signs can he make?

199. ## math

(X2-7x+10x3+1) ÷(2X-1)

200. ## biology

Explain how you might determine the role of an essential developmental gene using the following as a guide: *use of model organism? Why? *Use of conditional knockouts/knockouts/hypomorphic allele/null allele/ RNAi? Why? *locate its products, mRNA and

201. ## Chemistry

#23 At 25 °C only 0.0800 mol of the generic salt AB3 is soluble in 1.00 L of water. What is the Ksp of the salt at 25 °C?

202. ## Pre-Cal/Trig

Explain how to solve the following question. Surveying: From a point A hat is 10 meters above level ground, the angle of elevation of the top of a building is 42 degrees and the angle of depression of the base of the building is 8 degrees. Approximate the

203. ## Physics

A spring with a spring constant k=450.0 N/m is attached to a mass of m=8 kg and stretched -0.5 m from its equilibrium position and released. What is the speed of the block when it is at the equilibrium position?

204. ## chemistry

how will you recognize that a singe replace reaction has occured when you combine an active metal with 6M HCI

205. ## math question

Which is greater 0.4 or 0.54?

206. ## Physics

A 4.3 g dart is fired into a block of wood with a mass of 22.6 g. The wood block is initially at rest on a 1.4 m tall post. After the collision, the wood block and dart land 3.1 m from the base of the post. Find the initial speed of the dart.

207. ## Philosophy

Explain why it would be incorrect to say that AU is the view that an action is morally right just in case it causes more pleasure than any alternative

208. ## math %

I loaned Johnnie $5000.00 to be repaid$250.00 monthly loan past due nothing was every paid / interest rate is 10% what does johnnie owe me loaned year 2010 now it is Oct 2012?

209. ## math

what are the partial product and the product of 18x4

210. ## Physics

A 4.3 g dart is fired into a block of wood with a mass of 22.6 g. The wood block is initially at rest on a 1.4 m tall post. After the collision, the wood block and dart land 3.1 m from the base of the post. Find the initial speed of the dart.

write the sum.Show the ten-ten-fact you used. 9+7=16 /\ 1 6 10+__=? is it 10+6=16

212. ## Math

How much larger is the 6 in 657,879,004 than the 6 in 789,456,234?

213. ## math

what did the sardine say when a submarine went buy

214. ## math

number sense what two simpler problems can you use to find 9x38?

215. ## Social studies

Do only girls have sleepover party (pajama party)in the USA?

how do you convert 89/6 to a mixed number?

217. ## Social studies

What caused the Japanese ( what did the USA do) to attack Pearl Harbor.

218. ## math

At this rate how many minivans would pass luann if 60 vehicles passed her there are 15 minivans now and 45 vehicles total

219. ## algebra

Ben Cole was hired to shovel 100 tons of coal. He has been shoveling coal at a rate of 16 tons per day. After 3 days his brother Char joins him so they can finish the job faster. Char can shovel 10 tons per day. Find the amount of the 100 tons shoveled by

220. ## Math

Ned caught 1/3 pound of fish. Sarah caught 5/12 pound of fish . Jessica caught 1/6 pound of fish. How much fish did all three of them catch?

221. ## Social studies

What caused the Japanese ( what did the USA do) to attack Pearl Harbor.

222. ## science(word definitions)

whats the difference between the words dominant and recessive

223. ## Physics

A 750 N student stands in the middle of a frozen pond having a radius of 5.4 m. He is unable to get to the other side because of a lack of friction between his shoes and the ice. To overcome this difficulty, he throws his 2.0 kg physics textbook

224. ## Physics

The coefficient of kinetic friction for a 34.3 kg bobsleigh on a track is 0.150. What external force is required to push it down a 5.60° incline and achieve a speed of 60.12 km/h at the end of 75.2m ?

225. ## Sunset

At noon, ship A is 50 miles north of ship B and is headed south at 16mph. Ship B is headed west at 12 mph. At what time are they closest together, and what is the minimum distance between them?

226. ## science

Where in nature could you find a source of the same energy as that provided by batteries? explain

227. ## Science

I need help with coming up a hypothesis for and Organic Compound lab! Anyone have an idea?

228. ## c++

Distance between two 3-D points. Given two points in space (3-dimensional), find the distance between them. The user will input the coordinates (x,y,z) of the two points and your program will calculate and display the distance between the points.

229. ## Math Expert Help Me

I posted this earlier but no one answered. :( 1. Given a scale factor of 2, find the coordinates for the dilation of the line segment with endpoints (-1,2) and (3,-3). a. (2,4) and (6,6) b. (2,4) and (6,6) c. (-2,4) and (6,-6) d. (2,-1) and (-3,3) 2. Given

230. ## Math

the speed of a point A due to the rotation of the earth is twice that point of B.if A is on latitud 22 degree to the north calculate the latitude of B

231. ## Math

What is the "pre-image" of a function?

232. ## Physics

A uniform ladder 10.0m long and weighing 50.0N rests against a smooth vertical wall. If the ladder is just on the verge of slipping when it makes a 50 degree angle with the ground, find the coefficient of static friction between the ladder and ground.

233. ## Math

What is the Least Common Multiple of (31,180)

234. ## Geometry

The 8 rowers in the racing boat stroke so that the angles formed by their oars with the side of the boat all stay equal. Explain why their oars on either side of the boat remain parallel.

235. ## Math

A board, 32 cm long is cut into three pieces such that the second piece is twice as long as the first and the third is 7 cm longer than the second. Find the length of the shortest piece.

236. ## Rutgers University

A regional manager visits local fast food franchises and evaluates the speed of the service. if the manager receives her meal within 45 seconds, the server is given a free movie-admission coupon. If it takes more than 45 seconds, the server receives

237. ## Health

secondhand smoke is also referred to as _____. A. environmental tobacco smoke B. Involuntary smoking C. Passive smoking D. All of the above I said C but it was wrong

3p - p = 6

239. ## Math

Please help! Calculate typing speeds of 45 words per minute, and make a reasonable estimate of how long it will take you to do that 1000 lines a day. We will assume a 65 character line = 13 words (assumption of 5-character words). Assuming you earn 6 cents

240. ## physics

Consider a spacecraft that is to be launched from the Earth to the Moon. Calculate the minimum velocity needed for the spacecraft to just make it to the Moon’s surface. Ignore air drag from the Earth’s atmosphere. Hint: The spacecraft will not have

241. ## science

What property of gases allow them to completely fill whatever space they are in?

242. ## physics

Consider a spacecraft that is to be launched from the Earth to the Moon. Calculate the minimum velocity needed for the spacecraft to just make it to the Moon’s surface. Ignore air drag from the Earth’s atmosphere. Hint: The spacecraft will not have

243. ## math help

-7over9 . 3 over 5 is it 7 over 15 or -7over 15

244. ## Statistics

a city law-enforcement official has stated that 20% of the items sold by pawn shops within the city have been stole. Ralph has just purchased 4 items from one of the city's pawn shops. Assuming that the official is correct, and for x = the number of

245. ## physics

A tennis ball (m  57 g) is projected vertically with an initial speed of 8.8 m/s. (a) If the ball rises to a maximum height of 3.7 m, how much kinetic energy was dissipated by the drag force of air resistance? (b) How much higher would the ball have gone

246. ## English

How do the routines of life help give people their identities?

247. ## math

how do u divid 294 by 1.5

248. ## math

2:45 p.m- 6:15pm is about how many hours worked

249. ## science

where does the water on the outside of a glass cup come from

250. ## Politics

I know who the Director of Health and Human Service is I want to know who the President of DHS The Department of Human Services is?

251. ## Geometry

Below is a worksheet I have to do for my geometry class. I am not sure about the answers I have given and I have no clue about the ones not answered. Any help will be much appreciated and thank you in advance. A. Determine the number of triangulations for

252. ## Calculas

F(X)=9 csc6(X) it is continous from -infity to infinity except what value?

where did the water on the outside of a glass come from

254. ## chemistry

1. what is the smell and odor of NaCl when you add AgNO3 and HNO3. 2. What is the smell and odor of NaBr when you add AgNO3 and HNO3. Does a precipitate form? 3. What is the smell and odor of NaI with AgNO3 and HNO3? Is there a precipitate?

255. ## Physics

The third harmonic of a guitar string has a frequency of 170 Hz. What is the length of the guitar string if the speed of the waves on the string is 125 m/s? 1.103 m 2.206 m 0.368 m 2.040 m B?

256. ## math 3

the distance between los,angeles,ca and boston .ma is about 3,020 miles. twice a year,Li makes a roundtrip from LA to Boston. how many total miles does Li travel each year for these trips? please solve.

257. ## chemistry

What is the solution if you mix Sodium carbonate with sulfuric acid. Will it be clear or cloudy. Is the gas colorless?

258. ## math

a rectangle is made of 9 tiles and has 3 tiles in each row. how many different number sentences can you write for this rectangle?

259. ## Math

Hello, i need help to calcul: ( 1/2 ( -1 + i^3 )) ^2 Thanks for your help.

260. ## World History

What is the basis of the feudal system?

261. ## Physics

A box weighing 136. N rests on a table. A rope tied to the box runs vertically upward over a massless frictionless pulley and a weight is hung from the other end. What is the force that the table exerts on the box if the weight hanging the other side of

262. ## math

betsy is making a flay, she can choose three colors from red, white,blue, ang yellow. how many choices does betsey have?

263. ## Math

Ryan brought a red milk snake to show during science class. Then snake is 56 centimeters long. Find its length to the nearest whole inch.

264. ## physics

I am posting this question again as noone has answered it yet. State the surface powers required to produce the following lenses with +6.25D front curves. a. -0.50 DS b. +0.50 DS c. +1.75 DS Is a= -6.75D? b= -5.75D? c= -4.75D?

265. ## Science

Name one feed and feeding system in pig rearing.

266. ## social studies

what was the purpose for British to seize the hudson river valley

267. ## calculus

don't understand at all... find the slope of the tangent line to the curve y=xe^x at (1,e)

268. ## SAT Essay

Assignment: Is there such a thing as success without sacrifice? Plan and write an essay in which you develop your point of view on this issue. Support your position with reasoning and examples taken from your reading, studies, experience, or observations.

269. ## Math

Brad is building shelves for his mom. Each shelf will be 1/2 inch think with a 1/8 inch veneer glued on top. What is the total thickness of the shelf 5/8?

270. ## Geometry

Find the measures of an interior angle and an exterior angle of a regular polygon with 6 sides.

271. ## Maths

Three boys shared some cards. Peter had twice as many cards as Farid. The ratio of the number of cards Peter had to the number of cards Kiran had was 6:5. Farid gave 2/3 of his cards to Peter and the rest to Kiran. How many cards did Kiran have at first if

272. ## Math

A box has 8 blue and 5 green jelly beans. A bag has 6 blue and 8 green jelly beans. A jelly bean is selected at random from the box and placed in the bag. Then a jelly bean is selected at random from the bag. If a green jelly bean is selected from the bag,

273. ## science

what force must be applied to the end of a 2.0 meter long crowbar in order to lift a 500 Newton rock if the fulcrum of the bar is 0.5 meters from the rock?

274. ## Math: Functions and Definitions

What is the "pre-image" of a function?

275. ## English

You can buy fashionable shoes at a good price. (Is 'at a good price' an adjective phrase modifying 'shoes'? Or is 'at a good price' an adverbial phrase modifying 'buy'?)

276. ## logical reasoning, math

a blue box have 5 times as many marbles as a red box. the blue box has 24 more marbles than a red box. how many marbles are in each bx?

277. ## psychlogy

what might be the advantages of using the archival methods?

278. ## Physics

A m = 1.85 kg box rests on a plank that is inclined at an angle of θ = 65.5° above the horizontal. The upper end of the box is attached to a spring with a force constant of 21.0 N/m. If the maximum force of static friction between the box and the plank

279. ## science

How do you know a television change electricity into light energy? What other form energy is produced?

280. ## government

Is the watchdog function ever exercised in a biased way? How?

when i am rounded to the nearest ten, i am 80. the sum of my two digits is 15. what number am i?

282. ## social studies

why did br station in the colonies after 1773

283. ## govt

Do you agree with the expansion of technology we are more influenced by the media than ever before? If so, what are the positive and negative ramifications?

284. ## 3rd grade math HELP ASAP

When I am rounded to the nearest hundred I am 400. The digit in my tens is 4 more than the digit in my hundreds place. The digits in my hundreds place and ones place are the same. What number am I?

285. ## law

Do you think design rights add more value for the company?

286. ## English

what is correct to use in a sentence pair of orphans or pair of orphan?

287. ## English

Why does Huck make it appear that he has been murdered instead of simply rnning away from Pap?

288. ## math

plz help solve 6(4x+7)+x simply it plzz!thx for ur help

An eastbound train and a westbound train meet each other on parallel tracks heading in opposite directions. The eastbound train travels 12 miles per hour faster than the westbound train. After 1.5 hours, they are 174 miles apart. At what speeds are the two

290. ## math

jackie and janice are sisters with the same birthday, different birth years. today jackie is four times as old as janice. next year she will 3 times as old as janice. if jackie is less than 10 this year how old will she be next year?

291. ## Science

Question: The greatest expansion of water occurs when: isn't it when it turns to ice?? The other answers are at 4C it gains temperature or at 4C it loses temperature. In the winter the pipes can break because the water in them freezes that's why I thought