# Questions Asked onApril 19, 2012

1. ## maths

1 + 1/4 + (1.3)/(4.8) + (1.3.5)/(4.8.12)+...... = _____

2. ## Chemistry

Which atom has the smallest valence p atomic orbital? -Carbon -Nitrogen -Sulfur Why? A. That atom has the highest electronegativity. B. That atom has the fewest number of electrons. C. That atom does not have electrons in p orbitals. D. The valence

3. ## Physics

On a frictionless, horizontal air track, a glider oscillates at the end of an ideal spring of force constant 2.30 N/cm. The graph in the figure shows the acceleration of the glider as a function of time. Find the mass of the glider. Find the maximum

4. ## political science

When membership in an organization allows for a reductions in the price of museum tickets, it is called a a) purposive benefit b) bribe c) promotion offer d) material benefit e) solidary benefit

5. ## physics

If 1g of steam is mixed wid 1g of ice, then what will be the resultant temperature of the mixture?

6. ## Physics

an electron in a mercury atom jumps from level a to level g by absorbing a single photon. determine the energy of the photon in joules.

7. ## physics

The coefficient of friction between the block of mass m1 = 3.00 kg and the surface in the figure below is ìk = 0.365. The system starts from rest. What is the speed of the ball of mass m2 = 5.00 kg when it has fallen a distance h = 1.90 m?

8. ## Trig

sin^4t-cos^4t/sin^2t cos^2t= sec^2t-csc^2t i have =(sin^2t+cos^2t)(sin^2t+cos^2t)/sin^2tcos^2t then do i go =(sin^2t+cos^2t)/sin^2tcos^2t stumped

9. ## physics

In periods of peak demand, power companies lower their voltage. This saves them power (and saves you money!). To see the effect, consider a 1200- W coffeemaker that draws 10 A when connected to 120 V. Suppose the voltage is lowered by 13 % to 104

10. ## Pre-Calc Help!!!!!!!!

1+sin2x/sin2x=1+1/2(secx)(cscx)

11. ## physics

A piece of metal at 80 degrees celsius is placed in 1.2 L of water at 72 degrees celsius. The system is thermally isolated and reaches a final temperature of 75 degrees celsius. Estimate the approximate change in entrophy for this process.

12. ## math

Area A sequence of smaller squares is formed by connecting the midpoints of the sides of a larger square. (a) If the area of the largest square is 1 square unit, determine the first five terms of a sequence that describes the area of each successive

13. ## physics

An open container holds ice of mass 0.540 kg at a temperature of -18.7 c The mass of the container can be ignored. Heat is supplied to the container at the constant rate of 790 J/minute. The specific heat of ice to is 2100 J/kg . K and the heat of fusion

14. ## Pre-Calc Help!!!!!!!!

cos(2tan^-1(15/8))

15. ## Chemistry

Deriving Chem Beer's Law's Equation By comparing the absorbance of each trial solution, Aeq, to the absorbance of the standard solution, Astd, [FeNCS2+]eq can be determined. Two Beer’s Law equations can be written, one for the trial (Aeq =

16. ## science

Which of the following statements is not correct about reference frames?

17. ## math

tom had 8 pieces of pizza, tom ate one. How much is left

A group of students went to their favorite restaurant after the football game one Friday night. They all ordered from the menu and forgot to tell the server to give them separate checks. The bill totaled \$27, including the tip. They decided to split the

19. ## math

The total hang time T in seconds, is given by T(h)=^h/2. Where h is the maximum height. If a person jumps 6 ft off the ground, determine for how many seconds the person is in the air.

20. ## Statistics

12. The proportion of students who own a cell phone on college campuses across the country has increased tremendously over the past few years. It is estimated that approximately 94% of students now own a cell phone. Twenty five students are to be selected

21. ## Mathematics

water is poured into a cylindrical bucket with the base area of 300cm squared if 4.8 leters of water is poured into the bucket what is the height if the water in the bucket

22. ## History

European immigration in the 19th century was lower in South Carolina than it was in many other areas because the state what ?

23. ## A level, Mechanics

An object of mass 100 kg is suspended by two identical cables. The tension in cable one is (400i + 300j)N, where i and j are horizontal and vertical unit vectors respectively. The tension in cable two is (pi + qj)N. If the object remain at rest, find p and

24. ## Grade 12 life orientation

Hiv/Aids describe the life style disease/behaviour and explain 5 factors that contribute to the disease

25. ## Math

A pizza is cut into 10 equal slices. What is the measure of each central angle (the part first eaten)?

26. ## Accounting

Please prepare the following journal entries. Indicate which account should be debited and which account should be credited along with the dollar amount of the debit and credit. a) Investors invested \$100,000 in exchange for 10,000 shares of common stock.

27. ## political science

when paid staff conduct most of the daily business of a group, that group is best described as a a) PAC b) free-rider group c) 527 committee d) staff organization e) lobbyist

28. ## physis

A parallel plate condenser with oil between the plates( dielectric const. of oil K=2) has a capacitance C . if the oil is removed then what will be the capacitance of the capacitor?

29. ## history

How was the civil rights movement of the 1950s and 1960s a continuation of the Reconstruction-era struggle for blacks to achieve equality?

30. ## 3 grade english ms sue

ADJECTIVES AND ARTICALES DIRECTIONS CIRCLE EACH ARTICAL. UNDERLINE EACH ADJECTIVE 1-PEOPLE HAVE WORN MANY DIFFERENT STYLES THROUGHOUT THE YEARS. MY SON CIRCLE THE WORD (THE) AND UNDERLINE THE WORD IS (different) 2-When Aunt Rose was a teacher,she wore

31. ## Physics

A reversible engine converts 1/6 of the heat input into work. When the temperature of the sink is reduced by 62C, the efficiency of the engine is doubled.What are the temperarure of the source and sink?

32. ## chemistry

What is the percent yield if 23.5 of ethyl chloride is actually formed?

33. ## science

An aluminum bar is 2m long at a temperature of 20 degrees C What will be the length of the bar at a temperature of 100 degrees C

Step 1:H2O2 + I^-^ = H2O + OI^-^ step 2: H2O2 + OI^-^ = H2O + O2 + I^-^ What is the equation for the overall reaction? I am not sure how to do this since there are two equations. Complete the rate law for the overall reaction. I know how to do this one but

35. ## Grade 12 life orientation

Hiv/Aids describe the life style disease/behaviour and explain 5 factors that contribute to the disease

36. ## physics

A wire of diameter 0.65mm and length 6.0m stretches 10mm when 5.5kg is hung from it. What is the Young's modulus for the wire and what is the effective spring constant for the stretching wire

37. ## Physics

Sodium has bcc packing. If a distance between two nearest atoms is 3.7 A* then what is the lattice parameter?

38. ## Algebra

A jacket priced at \$65 is on sale at %20 off the original price. The sale price is then marked down another %30 off. What is the price of the jacket?

39. ## Maths

what is the equation for the tangent to the curve 6y=7-x^3 at (1,1)?

40. ## math

Is each question biased or faired? 6. Will you vote for the young inexperienced candidate, Mr. Soong, or the experienced candidate, Ms. Lopez? (1 point) biased fair 7. Will you vote for Mr. Soong or Ms. Lopez? (1 point) biased fair

41. ## math

Shop A sold a notebook for \$1200. This was 125% of the price of a similar notebook sold in Shop B. Find the price of the notebook in Shop B. During a sale, both shops gave the same percentage of discount. Dennis bought the notebook from Shop B and found

42. ## Algebra

What are variables ?

43. ## physics

both chloroplasts and mitochondria are like in that they both have_______ membranes and their own _____.

44. ## GRAMMAR

WHAT IS THE ADJECTIVE AND NOUN IN THE SENTENCE: THREE GUESTS BRING GUITARS. Thank you Daniel

45. ## math

A jar consists of 21 sweets, 12 are green and 9 are blue. William picked 2 sweets at random. Find the probability that both sweets are blue.

46. ## chem

How many molecules are in 1.60 g of SO2? Answer in units of molec

47. ## chemistry

Benzene has the empirical formula CH and an experimental molar mass of 78 g/mol. What is its molecular formula? Explain how you got your answer.

48. ## history

Describe President Reagan’s foreign policy goals and summarize several of the major, specific actions he took to meet those goals.

49. ## chemistry

(1) How many grams of copper, cu are there in 2.55 mol of cu? (2) Determine the percent composition of each of the following (a) ethylalcohol CH3CH2OH. (b) vitamin C, ascorbic acid C6H8O6. (c) Coteine, C18H21NO3. (3) A 27.5g sample of a compound containing

50. ## history

How did George Kennan’s containment doctrine change during the Truman, Eisenhower and Kennedy administrations? Which president was the most successful in containing Communism?

51. ## Mathematics

a bus travelled at at average speed of 54km/hour from lape town to cape town calculate in km the distance from lape to cape town

52. ## science

what are the different methods of helping people to hear again if they have something wrong with the cochlea, eardrum and ear canal.

53. ## Math

10a^3b, 8a^2 b^2, and 22ab^3 can someone please help me with this my kid needs help and i don't know how to do it

55. ## math

For the number 385,4012, and 856 first round each number to the nearest hundred. Then add the rounded numbers

56. ## science

what is the word for high energy body on outer edge of space

57. ## Maths

1 + 1/4 + (1.3)/(4.8) + (1.3.5.) + .... = _________

58. ## grammar

can you check these for me ? circle the action word that tells more. 1. Lee grabbed a bucket of paint options: got or grabbed 2.The paint slipped . options: slipped or fell 3. It dripped on Lee's coat, options: went or dripped 4. It sprayed on Lee's pants.

59. ## microbiology

what is sugar fermentation

60. ## Maths

watz the value of (sin 5A)/(sin A)?

61. ## biology

how could you set up an experiment to show that the oxygen is coming from the plant and not from the water???

find the balance after 15 years of a \$2500 investment earning 5.5% interest compounded continuously

63. ## life orientation

in line 10-15 critically discuss 5 ways in which the human or environmental problem impacts on the community

64. ## Calculus

find the region enclosed by the given curves: 4x+y^2=9, x=2y

65. ## math plzzzzzzz help

593 cm = to how many metres? and plzzz show how u gound or got the answer

66. ## science

do you know the word galaxy shaped like a wheel whithout cured arms

67. ## chemistry

What is the theoretical yield of ethyl chloride in the reaction of 20.2 of ethylene with 53 of hydrogen chloride?

68. ## Finance

Comparing Future Value. Calculate the future value of a retirement account on which you deposit \$2000.00 a year for 30 years with an annual interest rate of 7%.

69. ## chemistry

What is the theoretical yield of ethyl chloride in the reaction of 20.2 of ethylene with 53 of hydrogen chloride? (For ethylene, 28 amu; for hydrogen chloride,36.5amu ; for ethyl chloride, 64.5 amu.) What is the percent yield if 23.5 of ethyl chloride is

70. ## English

Writeacher, I really hope you can have a look at my last examples. I need to know which are wrong. I still have a few doubts on the use of to/at/in after have been. Thank you for helping me. 1) I haven't gone out for a walk. I have already been to school

71. ## physics

a gun shoots a potato from a height of 6 feet. how long does it take to hit the ground.

72. ## Finance/ MAth

find the balance after 15 years of a \$2500 investment earning 5.5% interest compounded continuously Someone show me how to do this, please?!

73. ## statistics

Children below the 30th percent are in need of special assistance assistance what raw score makes the cut off score for these children?

74. ## african american history

what is the argument of the book arc of justice?

75. ## Chem

calculate the volume in ml of 0.250 M silver nitrate solution required to react completely with a 5.00 g piece of copper

76. ## calculus

Solve for x on the interval (0, 2pi] (sin2x + cos2x)^2 = 1

77. ## chemistry

Hello, I have data here: tube # Contents Initial color (after 2 drops of universal indicator) Color after adding HCl Color after adding NaOH (after the HCl had been poured) 1 CO32-/HCO3- Dark purple Purple Purple 2 CO32-/HCO3- Dark purple -- -- 3 HCH3CO2/C

78. ## Chemistry

Our professor just told us that the final exam will be the ACS exam, we are taking general Chemistry II. What is the best way to study for ir? Is the preparing for ACS general chemistry study guide good? If we are taking general Chemistry II do we have to

79. ## Algebra 2

√3x-4=2√x-5 Solve this equation, if there is more then one answer separate with a comma

80. ## Biology

A plant's cell wall is made of cellulose fibers. What is the purpose of a plant's cell wall?

81. ## Physics

A capacitor is connected with a battery and stores energy U. After removing the battery,its connected with another similar capacitor in parallel. What will be the new stored energy in each capacitor?

82. ## Chemistry

Our professor just told us that the final exam will be the ACS exam, we are taking general Chemistry II. What is the best way to study for ir? Is the preparing for ACS general chemistry study guide good? If we are taking general Chemistry II do we have to

83. ## math

Maria drives 69 mph and Ming drives 60 mph. How far apart will they be in 3 hours?

84. ## English

I left out a sentence. Thank you very much, Writeacher. I haven't had my chess lesson yet. I haven't done my chess lesson (is a mistake). Can you suggest a site with exercises on the use of modals to express degrees of probabilities?

.50 - x / x = 3.20e-1 I need to solve for x. I was going to do .50 X 3.20e-1 and then take the square root but this is not correct. I am not sure what to do. Thank you for your help. Math(Please help) - Reiny, Tuesday, April 17, 2012 at 3:18pm You probably

86. ## chemistry

Assuming that the temperature and quantity of a gas sample remain constant, what will be the final pressure of 1.6 L sample of gas originally at 330K and 4.84 atm, when the volume is reduced to 840 mL?

87. ## dressmakeing exam 04202100

the most appropriate fabric for a pregnant women's only coat would be (a) black and ehite plaid (b) solid navy blue (c red and gray stripes (d) multicolored floral, when a dainty slip has along the top edge, the shoulder straps should be attached by (a)

88. ## Algebra

I am not understanding these kinds of problems: I cannot simplify with understanding. 7 times the 4th root of m^3 plus 9 times the 4th root of 256m^3.

89. ## Social Studies

Why were Hoosiers divided over the issues of slavery and loyalty before the Civil War?

90. ## math

Find the principal in Donna's account at the end of the second quarter if she invested \$300 at 7% and the interest is compounded quarterly

91. ## SS7R - HW Question Help!

In my other post I wrote "I'm have other 3 that I want you to check to see if they are correct. BTW - I have one more question I have trouble with." Here it is: Why did the Louisiana Purchase important to the US? Please help! btw - I'm a little curious

92. ## Chem

calculate the volume in ml of 0.250 M silver nitrate solution required to react completely with a 5.00 g piece of copper

93. ## chem

A sample of hydrogen gas occupies 16.8 L at STP. How many moles of the gas are present? Answer in units of mol

94. ## maths

PT bisects QR perpendicularly.P is a point on the y-axis.if Q(1;8) and R(6;1). Find the equation of PT

95. ## calculus

A swimming pool is a rectangular solid 15 ft wide, 40 ft long, and at most 4 ft deep. Water is being added to the pool at the rate of 25 cubic ft per minute. How fast is the water rising when there is 1800 cubic ft of water in the pool?

96. ## chem

At 119 degrees C, the pressure of a sample of nitrogen is 1.94 atm. What will the pressure be at 282 degrees C, assuming constant volume? Answer in units of atm

97. ## physics

an ideal fluid in a pipe of diameter 14cm is moving at 6.0m/s. If the incompressible fluid density is 1.05grams/cc, what is the flow rate in kg/s and what is the speed of flow if the pipe narrows to 4.0cm radius?

98. ## Algebra

Simplify: 5(cube root of 16) + 2(cube root of 54) 5 times the cube root of 16 plus 2 times the cube root of 54. I do not know how to type in the radical signs. Sorry.

99. ## math

Sasa had some 20-cent and 50-cent coins. 7/8 of the coins were 20-cent coins and the rest were 50-cent coins.After Sasa had spent \$72.50 worth of 50-cent coins and 5/7 of the 20-cent coins, she had 2/7 of the coins left. Find the total amount of money Sasa

100. ## physics

A 70g steel bullet moves at 200m/s just before imbedding itself into a thick anchored wood post. If 70% of the initial kinetic energy goes into heating the bullet (steel c = 460 J/kg-C)...how hot does the bullet become if it initially is at 26 degrees

101. ## Physics

What is the logic behind logic NOR gate?

102. ## math

suppose a board is 9 meters long how many centimeters long is it

103. ## Math question

rosie umbrella shop is selling umbrella for \$4.00 off the usua price of \$15.00. What is the cost of buying 3 sale umbrellas?

104. ## Algebra

Mr.clarks cell phone bill went from \$44.00 in april to \$55.00 in may. What was the percent of increase in hiss bill?

105. ## math

Robots are being used with increasing frequency on production lines to perform manotonous task. To determine whether a robot welder should replace human welders in producing automobiles, an experiment was performed. The time for the robot to complete a

106. ## Algebra(please and thanks you ) :)

What is 0.375 as a fraction in lowest terms ?

107. ## economy

a) Minimizing Losses: Whether a firm suffering losses decides to produce or not to produce in the short run depends on the benefits and costs of continuing production. Explain.

108. ## physics

A small cork with an excess charge of +5.0 ¦ÌC is placed 0.14 m from another cork, which carries a charge of −3.2 ¦ÌC. What is the magnitude of the electric force between the corks? The Coulomb constant is 8.98755 ¡Á 109 N ¡¤ m2/C2. Answer in

109. ## physics

Two electrostatic point charges of +54.0 ¦ÌC and +47.0 ¦ÌC exert a repulsive force on each other of 189 N. What is the distance between the two charges? The value of the Coulomb constant is 8.98755 ¡Á 109 N ¡¤ m2/C2. Answer in units of m

110. ## English

ms. sue you please help me with story questions? if you have time then this be story Field of Broken Dreams by Sharon Butala My memories of drives in the country when I was a child in the 1940s and early 1950s, after the devastation of the 1930s, are of

111. ## physics

Three point charges, +6.5 ¦ÌC, +1.4 ¦ÌC, and −3.9 ¦ÌC, lie along the x-axis at 0 cm, 1.8 cm, and 5.3 cm, respectively. What is the force exerted on q1 by the other two charges? (To the right is positive.) The Coulomb constant is 8.99 ¡Á 109 N

112. ## physics

One gram of tungsten has 3.28 × 1021 atoms, and each tungsten atom has 74 electrons. How many electrons are contained in 9.00 g of tungsten? Answer in units of electrons

113. ## Math

A farmer had a fence that encloses a square plot with an area of 36 meters squared. If the garnet uses this fence to enclose a circular flower garden, what will the area of the garden be?

114. ## Honors Chemistry

1. What is the pH of a solution whose [H3O+] is 1 X 10^ -5 M? 2. What is the [H3O+] concentration of a solution with a pH of 9? 3. What is the pH of a solution whose [H3O+] concentration is 3 X 10^-3 M? 4. What is the pH of a solution with a [H3O+]

115. ## math

colin is buying dirt to fill a garden bed that is a 9 foot by 16 foot rectangle. if he wants to fill it to a depth of 4 inches, how many cubic yards of dirt does he need? if dirt costs \$25 per yard, how much will the project cost?

116. ## statistics

I need to find the class midpoint, boundaries and class with for the following problem Tar Cigarette Filter Frequency 2-5 2 6-9 2 10-13 6 14-17 15 I did the midpoint and boundaries 3.5 5.5 7.5 9.5 11.5 13.5 15.5 17.5 But for the width I got an answer of

117. ## History/Global Affairs

Hi beautiful people! I'm working on an assignment talking about Australia's changing national identity in the EYES OF THE WORLD. I need to look at a particular event and or events as a way to highlight this change. The problem is that I was thinking the

118. ## statistics

Statistical Abstracts (117th edition) provides information aboutthe number of registered automobiles, including taxis, by state. The number ofregistered automobiles per 1,000 residents follows an approximately normaldistribution with mean ì = 514.6 and

119. ## URGENT!! Chemistry HELP!!

Use standard enthalpies to calculate Triangle H for: 2C2H5OH (I) + O2 (g) -> 2CH3CHO (g) + 2H2O (I)

120. ## SS7R

Why was Toussaint L' Ouverture important to Haiti? Answer - He was a leader of the slave revolt in Haiti. am i correct????? if im incorrect plzzzzz help me

121. ## life orientation

five ways in which you critically discuss how cancer disfase behaviour impact on the teenager

122. ## Plz help me... one science Q!

18. A pebble drops straight down into a tub of water, setting off ____________________ waves that travel at the boundary between the water and air. (1 point)

123. ## Biology

can anyone help me by defining what is holophytic? please

124. ## Physics

A 30m radius automobile tire rotates

125. ## Life orientation

Name two institutions organizations that are involved in supporting or giving redress to these disasters

126. ## biology

please help me by answering these questions: 1)how many salivary glands are present in our body? 2)what are the names of those salivary glands?

127. ## life orientation

critically discuss 8 way in which the environmental problem impact on the within your community or any other community within south africa or globally

128. ## Algebra

What property justifies this equation : 565 + 263 = 263 + 565 Identity property Comunitive property of addition Associative property of addition Distributive property

129. ## English

What are some adverbs that show condition? All I can find are adverb clauses that show condition.

130. ## earth

1.What's the heat trapping action of gases in the atmosphere?

131. ## Chemistry

Methane, butane, propane and octane are all simple hydrocarbons. Why are these hydrocarbons used differently? I believe they are used differently because of their carbon chains. They are commonly used for different fuels since large amounts of energy are

132. ## chem

A hydrofluoric acid buffer solution has the following concentrations: [HF]=0.43M [F-]=0.45M If 40 mL of 0.1M NaOH is added to 500 mL of the buffer, what is the resultant pH?

133. ## Physics

Question- A deflecting force is experienced by a charged particle entering a magnetic field. The deflecting force is always______ A. parallel to the magnetic field lines B. parallel to the motion of the charged particle C. perpendicular to both the motion

134. ## Per-calc Helppppp

keep in mind answers should be pi radians or if necessary 3 dec. csc^2-2=0 all angles 4cos^2x-4cosx+1=0 all angles and name 8 angles 7sin^2x-22sinx+3=0 all angles and name 8 angles 2cos^2x-7cosx=-3 all angles sinx(2sinx+1)=0 all angles

135. ## physics

27. A communications satellite transmits a radio wave at a frequency of 5 • 109 Hz. What is the signal’s wavelength? Assume the wave travels in a vacuum. Show your work. (3 points) I at least need the formula and how to solve it... not the answer.

136. ## Per-calc Helppppp

find: tanx=-3 one period and all angles 3csc^2x=4 one period and all angles sin2x+cosx-0 one period

137. ## Math

Let f(x)= 2x^2, g(x)= 5x-6, and m(x)= 3x. Find and simplify the composite function g(m(f(x))).

138. ## PreClac

The height in inches about the ground of the tip of the hour hand is a function, h(t), of the time (t), in hours. The hour hand is 6 inches long and the middle of the clock face is 68 inches about the ground. Identify the period, midline, and amplitude of

139. ## Algebra 2

(x^2+8xy+16y^2)^(1/3)*(x+4y)^(1/3)

140. ## Life Orientation

Identify and describe one environmental problem that causes crises,ill health,and disasters in South Africa?

141. ## to ms.sue

do you know a website that gives you reviews of tests. im looking for harcourt trophies story:the gold rush

142. ## Math

Meg flipped a penny 2 times. What is the probability she get 2 heads?

143. ## chemistry

Calculate the mass of barium chloride you need to make a 0.200 m barium chloride solution with 100.0 g of water.

144. ## chemistry

A potassium iodide solution is made by mixing 0.520 g of potassium iodide with 120.0 mL of water. Calculate the molality of potassium iodide. Assume that the density of water is 1.000 g/mL

145. ## Pre-Calc Help

Evaluate the expression under the given conditions. (show work please) sin(A-B); tan A=12/5, A in quadrant 3, sinB=-3sqrt(10)/10, B in quadrant 4.

146. ## chemistry

Calculate the freezing point of 0.15 m calcium chloride aqueous solution. Assume that the molal freezing point depression constant of water is 1.86°C·kg/mol and that the freezing point of water is 0.00°C

147. ## chemistry

The procedure described in this experiment was used to determine the molar mass of unknown liquid (non-electrolyte). The solution was made by mixing 0.961 g of the unknown with 100.0 g of water. The freezing point depression of the solution was −3.7°C.

5/7-2/3=

149. ## Algebra

Norman traveled 261 miles on a trip to bates. The trip took 4 1/2 hours. If he then drives for 1 1/2 hours to leighsville, which is another 81 miles farther, what its his average rate of travel for the entire trip?

150. ## English

I still have a few doubts on sentences you checked yesterday. 1) I did/had/went for an interview. (Is "do" possible?) 2) I've just taken (done is a mistake) a grammar test. 3) I've just been tested orally in English. 4) I haven't taken an oral English test

151. ## physics

A physics student drops a book into a shaft 250m deep,where the average mine temperature is 5 degrees celsius.Show that the sound of the book striking the bottom is heard after 7.82 seconds

152. ## Dynamics

Okay so I have a 1/2 in thick ellipsoidal steel plate where (p=493 lb/ft^3) and it has a major axis diameter of 4ft and a minor of 2ft. the plate rolls w/out slipping (friction=0.15) and in a vertical position has an angular velocity of of w=4 rad/s(i.e.

1. Regarding management and leadership, which statement is most accurate? A. Leaders can be good managers, and good managers can be leaders. B. Leaders aren’t managers, and managers aren’t leaders. C. Leadership and management are entirely unrelated.

154. ## statistics

From a random sample of 500 males interviewed, 125 indicated that they watch professional football on Monday night television. Does this evidence indicate that more than 20% of the male TV viewers watch professional football on Monday evenings? Use the

155. ## chemistry

give at least 3 atoms with its isotopes and its application?

156. ## Physics

Suppose an electron was bound to a proton as in the hydrogen atom, but by the gravitational force rather than by the electric force. What would be the radius and energy of the first Bohr orbit?

157. ## English

Writeacher, I downloaded a few details about modals expressing possiblity/probabity but I'm still doubtful about their use. My questions to you are numbers 1-2. Using modals to talk about the present: 1)Will / won't We use will and won’t when we are very

158. ## Science

A bear is an omnivore.Which of the following would be an example of items a bear could eat that would prove the bear is an omnivore? A.nuts and berries B.fish and berries C.fish and meat D.berries and honey B?

159. ## math

A jar consists of 21 sweets, 12 are green and 9 are blue. William picked 2 sweets at random. Find the probability that both sweets are blue.

160. ## Integral calculus

Hello, this is the last question from my homework that I get stuck at: ∫ (5^3/x - (x^8 + 9)^1/3 ) / 3x^2 will u, for sub. be = x^8 + 9? Then du is = 8x^7 dx x^7 dx = 1/8 du from there I'm stuck. Thank you

161. ## maths

A triangle has side lengths in the ratio 3:4:5. I the perimeter of the triangle is 84 cm, what is the length of the shortest side?

162. ## Music Physic

The trombone's low B flat 2 is played with the slide in first position. What is its effective length, that is the length of an idealized closed tube with the same second mode frequency? Estimate how far the slide should be moved to reach second position in

163. ## Science

Which of the following is a star? Earth Sun Moon a Comet? Sun?

164. ## Math

Evaluate the integral from 0 to 4 of (x+1)/(16+x^2) dx the answers are log(sqrt2) + pi/16 Could you please take me through how to get to that answer please, thank you very much!

165. ## Integral calculus 2

This is also one I can't figure out: ∫ x^3 (2x^2 + 1)^1/2 dx u is obviously = 2x^2 + 1 du = 4x dx x dx = 1/4 du 1/4 ∫ x^3 u^1/2 from here I know I can't integrate because I can't have more than 1 variable. Thank you

166. ## Math

The region above the curve y = sin^-1(x), (0 greater than or equal to y greater than or equal to pi/4), is rotated about the y-axis through a complete revolution to form a solid. Evaluate the volume. Thanks!

167. ## math

Karen put 60% of paycheck into her savings account. If Karen put \$120 into her savings account, what was the amount of her entire paycheck

168. ## chemistry

what are the applications of the silicon atom with its isotopes of 28,29,and 30?

169. ## Math

Evaluate the integral from 0 to sqrt3 cot^-1(x) dx. Thanks :)

170. ## statistics

The mean of math SAT scores is 500 and the standard deviation is 100. A random sample of 64 students from Leeds H.S. received an average of 480. Conduct a hypothesis test to determine if the population mean SAT score for Leeds H.S. is less than 500 with

171. ## physics

You have exactly 1 L of ethyl alcohol at room temperature 23 C. You put it in a refrigerator at 4 C.What's its new volume?

172. ## physics

A certain refrigerator is rated as being 39% as efficient as a Carnot refrigerator. To remove 102 J of heat from the interior at 0 °C and eject it to the outside at 23 °C, how much work must the refrigerator motor do?

173. ## pharmacy

suggest a technique , other than tlc, to confirm the purity of the samples

174. ## science of sound

a violin string’s length from nut to bridge is 33 cm, and on the open string A=440 Hz is played. What is the wavelength of the sound?

175. ## Economics

"The government decides to increase tax- (ceteris parabis)". -> what is the effect of this in an economy?

176. ## math

The water in fish tank has evaporated so it was 5/8 inch below the level it should be they added water and the water level went up 3/4 inch did the water level end up above or below where it should be

177. ## calculus

what is the linear approximation of f(x)=x^3-x at x=2

the points that amelia scored for each game are shown 325, 198, 262, 301, 275, 229 after her seventh ga, the range of her points was 129 points how many points did she score in the seventh game

179. ## English

i still be working on metaphor assignment for the fruits, i write that if tree bear fruits that represents achievement/success for writing ive written. do that make any sense?

180. ## Science

Trees will most likely compete with one another for- A.carbon dioxide B.soil C.water D.oxygen I know trees take in carbon dioxide and release oxygen. But im not sure which is the answer. Is it C?

181. ## Statistics

A large television repair service claims that its average repair charge is \$124. Suspecting that the average charge is higher, a consumer group randomly choose a sample of 35 statements for tv repairs done by the repair service and found the mean was

182. ## Math

The tail of a giant kangaroo is attached by a giant rubber band to a stake in the ground. A flea is sitting on top of the stake eyeing the kangaroo (hungrily). The kangaroo sees the flea leaps into the air and lands one mile from the stake (with its tail

183. ## English

Sorry, for asking you the same thing again, but I really don't know if I have to leave these two sentences as they are. 1. I have already been at school today. 2. I have already been to school today. (Is there a difference between them?) 3.I haven't been

184. ## to ms.sue

what do miners do in order to start mining. a go to a boom town b build flumess cstake a claim d find a grubstake i think its c.

185. ## chem

At STP, what is the volume of 8.38 mol of nitrogen gas? Answer in units of L

186. ## Science

Which of the following objects can reflect light? A.camera B.telescope C.tinted window D.eyeglasses C?

187. ## programming

Write a simple ATM program. Ask the user to enter their account number, and then print their beginning balance. (Just make one up). Then ask them if they want to make a deposit or a withdrawal. Depending on their selection, call a function to perform the

188. ## memorial

Peter and Ashley each drew a triangle with an angle of 59 degrees. Under which condition would the triangles be similar?

189. ## math

find equivalent fractions with a common denominator and order from least to greatest.1/2 4/9 4/18

190. ## Social Studies 10 Oregon Territory

1. Compare and contrast American and British attitudes toward the Oregon Territory: 2. Which attitude do you think would be more effective in gaining control of the Oregon Territory. 3. How might the Americans and British have attempted to undermine each

191. ## Physics

Is the speed of light constant as it passes through transparent materials?

192. ## Commerce

Provide recommendations on how to address the topic that you identified in the previous question

193. ## math

If three identical cubes have 3x^2+18x^2+36x+24 find a possible length of one side of one of the cubes

194. ## math

find function values f(x)=9x^2+10x-8

195. ## Commerce

Name two institutions that are involved in supporting these disasters.explain how these organizatins are involved in providing a safe and healthy environment

196. ## physics

what is the wavelength of light of frequency 100Hz?

197. ## Cardiovascular Respirtory

Which one of the following words means "the surgical repair of the larynx? A.Laryngectomy B.laryngostomy C.Larynoplasty D. Laryngostenosis My answer is (A) can someone check my answer

198. ## political science

A _______________ is the best example of an informational benefit provided by many interest groups. a) travel discount b) free T-shirt c) health insurance program d) newsletter e) consciousness-raising workshop

199. ## physics

Heat is added to an ideal gas at 20 degrees Celsius. If the internal energy of the gas increases by a factor of three during this process, what is the final temperature?

200. ## Math

Maria is playing a game of chance at the Hibiscus festival, costing \$1 for each game. In the game two fair dice are rolled and the sum of the numbers that turn up is found. If the sum is seven, then Maria wins \$5. Otherwise Maria loses her money. a)

201. ## Algebra

Please help solve Problem of the Week Waiting in line... The week before the big concert, five friends Alan, Ben, Cameron, Derryck, and Garrett, stood in line to buy tickets. There were other people there, but the five friends were in the line in the order

202. ## physics

Explain how the specific heats of materials are measured using the technique of calorimetry.

203. ## Ä·Ä«mija

Savienojuma reakcija ?

204. ## math

There are 24 counters. How many counters could you add without having to regroup? Why?

so it's d?

206. ## math

Biologist have have found that the weight W of a bird and the length L of it’s wing span are related by L=kW1/3, where k is a constant. The following list L and W for one species of bird. What is the value of k? W kilograms0.1 0.4 0.8 1.1 L meters 0.399

207. ## GEOMETRY

A PERSON STANDING 30 FEET FROM A FLAGPOLE CAN SEE THE TOP OF THE POLE AT A 35 DEGREE ANGLE OF ELEVATION. THE PERSON'S EYE LEVEL IS 5 FEET FROM THE GROUND. FIND THE HEIGHT OF THE FLAGPOLE TO THE NEAREST FOOT.

208. ## Physics Question. About cubes Mass

If a solid cube has a density of 9kg/m3 and a volume of 27 cubic meters, what is the mass of the cube? A- 81kg B- 3kg C- 9kg D- 243kg

209. ## Physics Question. About cubes Mass

If a solid cube has a density of 9kg/m3 and a volume of 27 cubic meters, what is the mass of the cube? A- 81kg B- 3kg C- 9kg D- 243kg

210. ## chemistry

You need to make a solution containing 150 g of potassium chloride in 300 g of water. What temperature is required?

211. ## physics

A cylinder with height 5.0 m is made by mixing materials with different indexes of refraction. The mixture is prepared such that the index of refraction is 1.0 on one end, 2.6 on the other end and varies linearly in between. How long does it take light to

212. ## Please can you help me (Probability)

Maria is playing a game of chance at the Hibiscus festival, costing \$1 for each game. In the game two fair dice are rolled and the sum of the numbers that turn up is found. If the sum is seven, then Maria wins \$5. Otherwise Maria loses her money. a) Please

213. ## Health Science

What is the pulse deficit if an apical pulse is 112 and the radial pulse is 88?

214. ## Calculus

Find the area of the region enclosed by the given curves: 4x+y^2=9, x=2y

215. ## Math 10 Linear Equations

Kevin opened a bank account and plans to deposit \$200 each month. Each time he makes a deposit, his parents have agreed to add 50% of the amount the family collects for returning cans and bottles. a) Write an equation that will show his monthly amount when

216. ## physics

Which of the following is forward biased? (i canna draw so plz manage wid dis) (0V)-------pn-------(-2V) (-4V)-------pn-------(-3V) (-2V)-------pn-------(2V) (3V)-------pn-------(5V)

217. ## Economics

Which of these products or services is likley to have an inelastic supply on a short run? A. Cargo Ships B. Haircuts C. Staples I said D am I rights?

218. ## chemistry

The molal boiling point constant (Kb) for water is ).51oC/m and the molal freezing point constant (Kf) for water is 1.86oC/m. Given this information here is the question... If I pour 25 mL of 0.035 M NaOH into 975 mL of water, what is the new concentration

219. ## physics

When an electron jumps from the 4th orbit to the 2nd orbit which series line does it get?

220. ## Economics

A large increase in gas prices creates a demand for cars with good gas mileage. It takes months for car companys to make these cars. How do you describe this market for cars? A. Inelastic B. Static I said A.Inelastic because, its a short run and the firm

221. ## Math

Roger wants to carpet a rectangular room with the length of 8 ¾ feet and a width of 9 1/3 feet. If he has 85 square feet of carpet, how many square feet of carpet will be left after he covers the floor of the room?

222. ## Economics

How does a persons perception of a good as a neccessity or a luxury effect his or her purchase of it? A. people who have alot of money will buy goods even if they think they are a luxury. B. a good that is perceived as expencive will no longer be

223. ## math

In 2000 the population of a state was 5 million and growing continuously at a rate of 3.4% per year. a) Write a function that models the state’s population in millions x years after 200. b) Graph f in 0,10,1 by 4,7,1 c) Estimate the state’s population

224. ## chem

What is the volume of 2.8 × 10^6 molecules He? Answer in units of L

225. ## English

I have an test on these and I do not want to fall the test. Please tell me a ways I can study, online tests etc so that I can pass it. Thank you and I appreciate for your help! They are: They will be fill in the blanks, multiply choices. (1)Petroleum (2)

226. ## Commerce

Provide recommendations on how to address environmental factors

227. ## math

The population P in 1995 for a state is given along with r, its annual percentage3 rate of a continuous growth. P=16 millions, r=1.2% Write the formula f(x) =Pe^yx, where r is in a decimal notation, that models the population in millions x years in 1995.

228. ## Algebra 1

2) A family of 2 adults and 3 children go to the county fair that sells raffle tickets for 75¢ each. Admission price is \$5 per child and \$8 per adult. Let n be the number of raffle tickets bought. 2a) Write a function in the form of C(n) to describe the

229. ## French

I need an accurate translation for this: "Two accusation people make of Americans is that we are lazy and spoiled. This is an unfair accusation, for we are all different." in french Thank you for all the help given.

230. ## life orintation

identify and describe one environmental problem that causes ill health,accidents,crises,and disasters within your community or any other community within South Africa or globally

231. ## Math

How do you evaluate these expressions? 13 + (-29) or (-32) -44

232. ## science

Define the main goals and strategies of green intelligence. Do you think market-based approaches could save the planet? Why or why not?

233. ## English

Writeacher, I downloaded a few details about modals expressing possibility/probability but I'm still doubtful about their use. My questions to you are numbers 1-2. Using modals to talk about the present: 1)Will / won't We use will and won’t when we are

234. ## Alg2/Trig

Write the log as a single function: logx + 2logy - logz

235. ## Pre calculus

finding equations for the hyperbola whose graph is F(0,13) and F(0,-13)

236. ## Economics

In a market supply, what factor would cause a decrease in meals served? A. lifting of excise taxes B. government farm subsidies C. high global demand for fuel My grandmother says A. but i say B. whos right me or her? Someone help please!!

237. ## chemistry

Calculate the theoretical yield of the precipitate formed when a solution containing 1.02 grams of lithium phosphate is mixed with a solution containing 2.72 grams of strontium nitrate

238. ## math

why is it hard to find the mass of the statue of librty

239. ## English

I still have a few doubts on the use of to/at/in after have been. Thank you for helping me. 1) I haven't gone out for a walk. I have already been to school (or at school) today. I haven't been to the cinema yet today. 2) I've already gone shopping online.

240. ## physics 101

A solid uniform disk of mass 21kg and radius 85cm is at rest flat on a frictionless surface. A string is wrapped around the rim of the disk and constant force of 35N is applied to the string, which does not slip on the rim, in the positive x direction. (a)

241. ## Music Physics

Given that the oboe's lowest note is B flat 3 and its length approximately 64 cm, what length would you expect for the bassoon, whose lowest note is B flat 1? What length for the contrabassoon, lowest note b flat 0?

242. ## Music Physics

The clarinet's lowest note is D3, 147 Hz. What is its effective length, that is, the length of an idealized closed pipe that has this frequency for its first mode? Explain why this is less than the actual length of the instrument?

243. ## SS7R HELP!

I have a worksheet for which is due tomorrow and my teacher is grading it. I'm having trouble with 3 questions (it have 7 questions) please help me. 1. Why did the western farmers oppose Spanish and French control of New Orleans? 2. Why was Toussaint L'

244. ## SS7R - 3 HW Question Check

4. What were Jefferson's concerns in purchasing Louisiana? Answer - Jefferson's concern in purchasing Louisiana is that he had always insisted that the federal government had only those powers spelled out in the constitution. 5. Jefferson sent Lewis and

245. ## math

eighteen railroad ties, each 2.9meters long, are laid end to end. find the total length in meters, of the eighteen ties

246. ## Pre-Calc Help!!!!!!!!

Evaluate the expression under the given conditions. sin (A+B); tan A= 12/5, A in quadrant 3, sin B= -3sqrt(10)/10, B in quadrant 4.

247. ## English

Writeacher, what does "blasè" mean? Example: I was getting a bit blasè by the time I had my last interview. I still need to check a sentence. Thank you very much. 1) Speaker 2 believes that appearance is important when going for an interview. For this

248. ## chemistry

What are the various uses of radioactivity in healthcare? What are the future trends in healthcare with respect to the use of radioactivity?

249. ## English

1. One question at a time. 2. Ask one question at a time. 3. Ask me one question at a time. 4. Ask one question of me at a time. 5. Ask one question at a time of me. (Are they all the same? Can we use all the expressions?)

250. ## Physical Science

The conversion of water to ice is considered a physical change, whereas the conversion of iron to rust is considered a chemical change. Why?

251. ## math

Ellen drove 220 miles in 3.5hours. To the nearest tenth, find Ellen's average speed in miles per hours

252. ## Science

A group of trees are on a hillside The trees will most likely compete with one another for- A.carbon dioxide B.soil C.water D.oxygen I think it's C I know that plants take in carbon dioxide and give out oxygen

253. ## math

wat is the value of (2/3)to the 2power?

254. ## MATH

WHAT IS THE MEAN

255. ## Trig?Precalc

write the rectangular equation x^2+y^2=6 in polar form. I do not want people to just post the answer! Please, show your work so that I can understand how to do these kinds of problems myself! Thank you and God Bless!