# Questions Asked onSeptember 23, 2012

1. ## Physics

One kind of slingshot consists of a pocket that holds a pebble and is whirled on a circle of radius r. The pebble is released from the circle at the angle θ so that it will hit the target. The angle in the drawing is 33.4°. The distance to the target

2. ## Account

Which of the following accounts is decreased by a debit entry? a. Accounts Payable b. Cash c. Prepaid Insurance d. Insurance Expense

3. ## physics

A ball is thrown straight downward from the surface of the moon. Is the maximum height it reaches less than, equal to, or greater than the maximum height reached by a ball thrown upwards on the earth with the same initial speed? Ignore air resistance in

4. ## Physics

A boy wishes to row across a river in the shortest possible time. He can row at 2m/s in still water and the river is flowing at 1m/s. At what angle should he point th efront of his boat? The answer is 90 degrees but I don't understand how to solve the

5. ## chemistry

What is the nuclear symbol for the radioactive isotope of copper with a mass number of 60?

6. ## Chemistry

The density of dry air measured at 25 degrees Celsius is 1.19x10 to the negative 3rd power. What is the volume of 50.0g of air?

7. ## physics

A pitcher throws a 0.5kg ball of clay at a 6kg block of wood. The clay sticks to the wood on impact and their joint velocity afterwards is 3m/s. What is the original speed of the clay? I know the answer is 39m/s but I have no idea how they come up with

8. ## TRIG

A circular power saw has an 8-1/2 inch diameter blade that rotates at 4400 revolutions per minute. a)Find the angular speed of the saw blade in radians per minute. b)Find the linear speed in feet per minute of one of the 24 cutting teeth as they contact

9. ## ENGLISH

6. The following words share a denotative meaning. Which one has a negative connotation? (1 point) confident certain decisive demanding ~ 7. Read the following Chippewa song. Identify its purpose. A loon I thought it was But it was My love's splashing oar.

10. ## Trig

A 16 - foot ladder leaning against the side of a house reaches 12 feet up the side of the house. What angle does the ladder make with the ground

11. ## calculus

Find the x-coordinates of all points on the curve f(x) = sin 2x − 2 sin x at which the tangent line is horizontal. (Enter your answers as a comma-separated list. Use n to represent any integer.)

12. ## economics

which of the following statements about inflation are true? check all that applies a) policy makers also worry about a negative inflation rate, or deflation b) painful government actions may sometimes be necessary to bring down a high inflation rate. c) A

13. ## chemistry

explain,using the kinetic theory what happens to the particles in oxygen as it is cooled down.

Canada Honey (IN tons)/ Maple (in tons) 0 60 10 45 20 30 30 15 40 0 United States Honey (in tons)/ Maple (in tons) 0 50 10 40 20 30 30 20 40 10 50 0 the question is who has a comparative advantage in producing maple syrup and who has the advantage in

15. ## physics

A student drives a moped along a straight road as described by the velocity versus time graph in the figure. The divisions along the horizontal axis represent 1.5 s and the divisions along the vertical axis represent 4.5 m/s. Sketch this graph in the

16. ## AP Chemistry

The molar heat of fusion for water is 6.01 kJ/mol. The heat capacity for water is 75 J/mol deg. Which expression gives the quantity of energy need to change 1.0 mol ice at 0C to liquid water at 25C? A. 6010/(75x25) B. 6.01+75 C. 6010+(75x25) D.

17. ## math

A skydiver with a weight of 185 lbs is falling. At a certain moment the force of air resistance on the sky diver is 145 lbs. What is the skydiver's acceleration at this moment? (Hint: Remember that the weight of an object is given by mg.) AND When the

18. ## us history

Which of the following is not like the other? Cortes, Pizarro, Champlain, and Ponce de Leon

19. ## math

261 miles in 29 minutes

20. ## Physics

a projectile is fired with an initial speed of 53 m/s. Find the angle of projection such that the maximum height of the projectile is equal to its horizontal range

21. ## Social Studies

Name 2 Natural Resources and tell me how you can take care of them? How do people use them to make a living?

22. ## calculus

For what values of r does the function y = erx satisfy the differential equation y'' − 8y' + 2y = 0? (Enter your answers as a comma-separated list.)

23. ## Chemistry

You weigh out 1.60 g of sodium carbonate monohydrate, dissolve it in water and react it with 15.00 mL of 2.00 M HCl. Write an equation for the reaction and calculate the expected mass or carbon dioxide that will be produced. Your answer should be a decimal

24. ## Chemistry

A bottle of wine contains 11.4% ethanol by volume. The density of ethanol (C2H5OH) is 0.789 g/cm3. Calculate the concentration of ethanol in wine in terms of mass percent and molality.

25. ## physics

Two blocks are connected by a lightweight, flexible cord that passes over a frictionless pulley. If m1 = 3.8 kg and m2 = 9.2 kg, and block 2 is initially at rest 140 cm above the floor, how long does it take block 2 to reach the floor?

26. ## precalculus

Suppose f is an even function and g is an odd function such that the composition fog is defined.d show that fog is an even function

27. ## Chemistry H.

Assume that the nucleus of the fluorine atom is a sphere with a radius of 5 x 10 ^ -13 cm. Calculate the density of matter in the fluorine nucleus in grams/cm^3. Now convert your answer to tons per cubic centimeter, knowing that there are 454 grams in one

28. ## Account

If an investor can use accounting information for two different companies to evaluate the types and amounts of expenses, the information is said to have the quality of ________? a. Neutrality b. Comparability c. Materiality d. Consistency

29. ## Chemistry H.

Indium has two naturally occurring isotopes and an atomic mass of 114.818 amu. In- 113 has a mass of 112.904 amu and an abundance of 4.3%. What is the identity and percent abundance of indium's other isotope. I am very confused on how do I set up this

30. ## Physics

At what DISTANCE from the earth's surface will a mass of 5.0kg be just 45.0N in weight

A carpenter asks his helper to toss an apple to him. The carpenter is 12 ft up and 12 ft to the right of the helper, who throws the apple at Vo=32 ft/s. There are two values of theta that cause that apple to land in the carpenters hand. What are they?

32. ## physics

a balloon is moving upwards with speed of 5m per second .when it is at height 98 m.a packet dropped from it .what velocity of packet when it strikes the ground

33. ## analytical chemisty

Calculate the pH and pOH of a 0.00002M solution of acetic acid.

34. ## math

The owner of a candy store want to sell, for \$6 per lb, a mixture of chocolate-covered raisina, which usually sells for \$3 per lb, and chocolate-covered macadamia nuts, which usually sells for \$8 per lb. They have 40 lbs of raisins. How many lbs of the

35. ## 1301 history

The massachusetts bay puritans a. lived as grim an joyless people b. came over the objections of the viginia colony c. were seeking to escape military service in england d. were christian misionaries e. enjoyed a particularly mild winter their first year.

36. ## History

Which English Colonies were settled as a result of religious conflict in England?

37. ## Pre-Algebra-math

Mr.Jones bought 20 yards of fencing to make a pen for his dog, the pen will be in a retangle shape fencing comes in 1-yard sections,he want the biggest space possible for his dog to run. What are the dimensions of the maximum space of the pen he can get??

38. ## Physics? clueless on what to do

Jack is 12m from the bus and is running towards the bus at a constant 4.0m/s. If the bus accelerates away from the bus stop at .8m/s^2, can he catch the bus? If so where? Vi= initial velocity vf=final velocity a= acceleration d=distance t=time I found out

39. ## Algebra

I need help with this ASAP please Solve D=ABC for B B=?

40. ## algebra 2

two trains leave the dallas port going in opposite directions. if one train goes 56 miles per hour, and the other goes 52 miles per hour how long will it take them to be 363 miles apart? how do i set up this problem?

41. ## dynamics

A carpenter asks his helper to toss an apple to him. The carpenter is 12 ft up and 12 ft to the right of the helper, who throws the apple at Vo=32 ft/s. There are two values of theta that cause that apple to land in the carpenters hand. What are they?

42. ## Accounting

Peck Company The Peck Company reported the following items on its financial statements for the year ending December 31, 2010. Sales - \$1,560,000 Cost of Sales - \$1,400,000 Selling, general and administrative expense - 40,000 Other Expense - 30,000

43. ## Sociology

Are my three choices correct? Question 1 = C, Question 2 = A, and Question 3 = B, 1). Sociologist Harriet Martineau was known for fighting for the rights of both __________ and __________. a) children; slaves. b) women; children. c) slaves; free blacks. (I

44. ## Chemistry

Is 3HCl(aq)+HNO3(aq)->Cl2(g)+NOCl(g)+2H2O(l) an oxidation-reduction reaction?

45. ## Accounting

Doughtry's Pet Shop reported a net loss of \$1,500,000 and total expenses of \$2,900,000. How much are total sales? Answer a. \$1,600,000 b. \$4,400,000 c. \$2,400,000 d. \$1,400,000

46. ## Physics

F1 and F2 are two horizontal forces of 70 N each, acting on a wagon. They are at 45° to the x-axis and at right angles to each other. A third force, F3, also 70 N, acts along the positive x-axis. What if, instead, F2 acted in the opposite direction from

47. ## Pre calculus

give an example of two decreasing functions whose product is increasing

48. ## Social Studies 8R - HW. Qs. Check

Why did many freedmen and poor whites become sharecroppers? Answer - Some large planters had held onto their land and wealth through the war. Now they had land but no slaves to work it. am i correct???????????

49. ## math

352109rounded to the nearest hundret thousand

50. ## algebra

Find the second and fifth terms of A(n)=22+(n-1)11 and A(n)=-2+(n-1)(-2)

51. ## physics

A car accelerates uniformly from rest to a speed of 24.3 km/h in 5.8 s. Find the distance it travels during this time. Answer in units of m

52. ## math

352109rounded to the nearest hundret thousand

53. ## Thinking Mathematically

solve A Flag Pole Has A Height Of 16 Yards. It Will Be Supported By Three Cables, Each Of Which Is Attached To The Flagpole At A Point 4 Yards Below The Top Of The Pole And Attached To The Ground At A Pole. Find the total number of feet of cable that will

54. ## CHEMISTY!!!!!!!!

If 15.0g of KCL is added to 100.0g of water at 30.0 C, how much more must be added to saturate the solution

55. ## Math

Use induction to prove the sum of the first n odd numbers, or 1 + 2 + 3 +....+ (2n 1) = n^2

56. ## math

Is 13/0 considered to be undefined?

57. ## Account

The going concern assumption is concerned with a. The company's ability to continue operations long enough to carry out its existing obligations. b. Measuring ongoing business activities at their exchange price at the time of the initial external

58. ## math

find the 3rd multiple of 100, the 4th multiple of 10,and the 9th multiple of 4

59. ## Physics

At what distance from the earth's surface with a mass of 5.0kg be just 45.0N in weight. HELP

60. ## math

Four boxes of cereal are to be selected at random from a continuous process that fills boxes labeled "Contents: 340 g." The contents of the first three boxes are found to weigh 339.0g, 337.7 g, and 338.9 g. (a) What minimum weight of cereal must the fourth

61. ## nkln

From the dropdown box beside each adjusting entry, select the letter of the explanation A through I that best describes the journal entry (you can use letters more than once): A. To record receipt of unearned revenue. B. To record this period's earning of

62. ## Account

The going concern assumption is concerned with? a. The company's ability to continue operations long enough to carry out its existing obligations. b. Measuring ongoing business activities at their exchange price at the time of the initial external

63. ## health

it is important to report changes in a client behaviour because A)change is of intrest to all B)the family of the person will ask about it. C)it may be a treatable medical reaction D) all of the above.

64. ## health

it is important to report changes in a client behaviour because A)change is of intrest to all B)the family of the person will ask about it. C)it may be a treatable medical reaction D) all of the above.

65. ## health

as dementia progresses clients demonstrate increasing numbers of symptoms True or False

66. ## Account

Peck Company: The Peck Company reported the following items on its financial statements for the year ending December 31, 2010. Sales - \$1,560,000 Cost of Sales - \$1,400,000 Selling, general & administrative expense - 40,000 Other Expense - 30,000 Dividends

67. ## math

1 + tan^2 225 degrees

68. ## Bryce

What land bridge is between africa and the arabian peninsula? I can't figure it out! Also, what country in the North African, Southwest Asian, and Central Asian regions have the highest population? Is it egypt?!

69. ## math

1 + tan^2 225 degrees

70. ## Account

Use the following identification codes to indicate the effects of each transaction on the accounting equation: I = Increase; D = Decrease; NE = No Effect. Write your answers in the space provided under the accounting equation, being sure to include an

71. ## physics

a 60 kg object is attached to one end of a 40 kg steel tube 2.4 m long. what is the distance from the loaded end to the balance?

72. ## English

What is a thesis statement for First Confession

73. ## northwest

how many 2 1/4 inch pieces can be cut from 6 foot long tape?

74. ## geography

Will you check my answers please? 1. Is central America on the North or South American continent? North American 2. What are the three countries in the world with the largest land areas? Russia, Denmark, and Canada 3.What is the capital of the state that

75. ## chemistry

A volume of water delivered using a buret has a mass of 5.15 g. What was the final volume reading on the buret if the inital volume reading was 0.70 ml? [assume the density of water is 1.00g/mL]

76. ## math

what is 7 4/9 - 5 8/9

77. ## Kayla

The Symbiotic relationship between rhzobium bacteria and the roots of plants in the legume family is an example of what? A. Symbiosis B. Nutrient storage C. Nutrient Absorption D. Anchorage E. Support

78. ## math

Prove with vectors that for every triangle the lenght of one side is smaller than the sum of the other two sides.

79. ## Taylor

The blck mamba is one of the world's most poisonous snakes, and with a maximum speed of 18.0 km/h, it is also the fastest. Suppose a mamba waiting in a hide-out sees prey and begins slithering toward it with a velocity of +18.0 km/h. After 2.50 s, the

This deals with a cam follower. The slotted bar rotates with constant angular velocity, theta=12 rad/s. The follower 'A' follows the circular cam as the bar rotates. The arm is pinned at a distance h=0.2m to the left of the cam's center. The radius of the

81. ## Physics

A ball is dropped from rest off a 34 m building. How long does it take to hit the ground at the bottom of the building?

82. ## Math

Skanda wants to tack four posters on the bulletin board.he will tack the four corners of each poster,overlapping the sides of each poster a little. What is the least number os tacks that skanda can use?

83. ## math

Robert planted pumpkins to sell. Their garden has 5 sides. 5 feet 8 inches, 7 feet 8 inches, 10 feet 3 inches, 7 feet 5 inches, 7 feet 11 inches. What is the perimeter of their garden?

84. ## Physics

If a ball has an initial downward speed of 24 m/s, how far does the ball drop during the 4 s to 5 s interval

85. ## writing contest

My creative writing teacher gave me a list of competitions, and one of them requires a protagonist that is transgender. What does it mean? Is it like Mulan, how she dressed up like and pretended to be a man, or does it mean people who have surgery

86. ## Physics

A boat has a mass of 6800 kg. Its engines generate a drive force of 4500 N, due west, while the wind exerts a force of 660 N, due east, and the water exerts a resistive force of 1200 N due east. What is the magnitude and direction of the boat's

87. ## algebra

what is the answer of 7h+2w-9h-8w

which way of asking for action carries the highest level of politeness?

89. ## social studies

Name 2 Natural Resources and tell how you can take care of them. How do people use them to make a living?

90. ## Chemistry Help? Thanks

At what temperature do KCL and KNO3 have the same solubility If a saturated solution of KNO3 at 20.0 C is heated to 80.0 how much more could be dissolved? If a saturated solution of KCL at 90.0 C is colled to 30.0 C how much of the solid will precipitate?

91. ## physics

how do you convert 1.75 multiplied 10 to the 6th power grams to ounces? (answers)

92. ## physics

how do you convert 1.75 multiplied 10 to the 6th power grams to ounces?

93. ## physics

A ditch d = 3.00 m wide crosses a trail bike path (Fig 3.35). An upward incline of è = 18° has been built up on the approach so that the top of the incline is level with the top of the ditch. What is the minimum speed a trail bike must be moving to clear

94. ## physics

A ball is thrown from a point 1.38 m above the ground. The initial velocity is 19.9 m/s at an angle of 33.8° above the horizontal. Find the maximum height of the ball above the ground. Calculate the speed of the ball at the highest point in the

95. ## physics

from equqtion t equal to x+3 .find velocity and acceleration t equal 1second here x is distance

96. ## math

what is not a factor of 60? [a 30 [b 120 [c 15 [d 20

97. ## AP Physics

Jack is 12m from the bus and is running towards the bus at a constant 4.0m/s. If the bus accelerates away from the bus stop at .8m/s^2, can he catch the bus? If so where? Vi= initial velocity vf=final velocity a= acceleration d=distance t=time I found out

98. ## Physics

A gull is flying horizontally 8.17 m above the ground at 6.35 m/s. The bird is carrying a clam in its beak and plans to crack the clamshell by dropping it on some rocks below. Ignoring air resistance, what is the horizontal distance to the rocks at the

99. ## English

Each one of the following sentesces contains a cluase.In which sentence is the clause used as an adverb? A. I do not mind fishing, as long as I don't have to bait the hook. B. All of the delegated who have actual opinions should keep silent. C. What you

100. ## Biology

Need to write a brief description of the procedure required to make 900mL of a 0.5 M NaCl solution. The formula weight of NaCl is 58.4g/mole.

101. ## physics

You are trying out for the position of place-kicker on a professional football team. With the ball teed 50.0 m from the goalposts with a crossbar 3.05 m off the ground, you kick the ball at 25 m/s and 36° above the horizontal.

102. ## physics

from equation t equal to root x+3 find velocity and acceleration t equal to 1second

103. ## trig

A woman that is 5'4" stands 15 ft from a streetlight and casts a four-foot long shadow. Determine the height of the streetlight and the degree measure of the angle of elevation form the tip of her shadow to the top of the streetlight, both accurate to two

104. ## physics

from equation t equal to root x+3 find velocity and acceleration t equal to 1second

105. ## physics

an object is shot from the ground at an angle of 35 degrees with a speed of 50m/s. what are the x and y components of its velocity initially at the top of its path and just before it hits the ground?

106. ## biology

what would happen if an excess of mg(oh)2 is used

What is absolute value?

108. ## THEATRE HISTORY

Can someone Help me find good sourses for an analogy of euripides Electra? Ineed both information and ideas to write my paper thanks.

109. ## english

Is the following a sentence fragment or an independent statement? Explain how you know. “Knowing only that I was asked to show up at noon

110. ## physics

an object is shot from the ground at an angle of 35 degrees with a speed of 50m/s. what are the x and y components of its velocity initially at the top of its path and just before it hits the ground?

111. ## english

What is a dependent word? What happens when you add a dependent word to an independent statement? Illustrate your point with examples

Simplify: |15|

113. ## Math

True or False: The ratio of boys to girls in Miss Bennet's class is 2:1. This ratio means there are two boys and one girl in Miss Bennet's class.- Is it true or False, and WHY?

what does the |#| mean? Thanks

115. ## Biology

Write a brief description of the procedure required to make 10mL each of 2 M, 1.5 M, and 1 M NaCl solution from a 2 M Stock NaCl. Write the description.

116. ## physics

The coefficient of static friction between a block and a horizontal floor is 0.414, while the coefficient of kinetic friction is 0.107. The mass of the block is 4.03 kg. A horizontal force is applied to the block and slowly increased. What is the value of

117. ## Social Studies

What is a human resource? Name some examples of human resources and how they help the world?

118. ## History

How did england change after its war with spain? and How did this change played a role and part in history by analyzing the magnitude and scope?

119. ## Math: Story Problems

If one hand equals 4 inches, find the height in feet of a horse that is 16.2 hands. (1 ft. = 12 in.)

120. ## physics

Three forces act on a moving object. One force has a magnitude of 61.9 N and is directed due north. Another has a magnitude of 52.0 N and is directed due west. What must be (a) the magnitude and (b) the direction of the third force, such that the object

121. ## social studies

Central Valley what Cities are in that region? What can you find there, see or do, jobs and natural resouces that you might find ther. Why is that region great?

122. ## Calculus !!!!!!

define what it means by dy/dx for y=f(x) Thanks

123. ## chemistry

What volume would a 0.0871 gram sample of air occupy if the density of air is 1.29 g/L

124. ## math

A box contain 12 cell phones of which 4 are defective.all phones look alike.3 phones are drawn randomly what is the probability.1 all the 3 bulbs are defective.2 at least 2 of the bulbs chosen are defective.3 at most 2 of the bulbs chosen are

125. ## physics

The pilot of an aircraft wishes to fly due west in a 42.7 km/h wind blowing toward the south. The speed of the aircraft in the absence of a wind is 204 km/h.

126. ## math

the scale at the animal shelter is broken. the scale adds 5.2 pounds to anything that is weighted. identify the quantities in this situation. assign a letter to each one

127. ## algebra

The height above ground of a rock dropped from a bridge can be found using the formula h(t) = 9.8tsquared + 100, where t represents the number of seconds. What is the height of the rock after 3 seconds? How long will it take the rock to hit the bottom?

128. ## algebra

y=x+z x=8 z=12 what is that value?

129. ## 1301 history (college)

What did the massachusetts bay puritans do?

130. ## Physics

A ball is dropped from rest off a 34 m building. How long does it take to hit the ground at the bottom of the building?

131. ## Geometry

Find the value of each variable and ST if S is between R and T. Draw a picture and solve each. RS=12, ST=2x, RT=34

132. ## complete subject and complete predicate

this gold ring once belonged to my grandmother

133. ## Physics

If a ball has an initial downward speed of 24 m/s, how far does the ball drop during the 4 s to 5 s interval?

134. ## OChem

1. if and when boiling points can be used to determine the purity of organic compounds. 2. if and when boiling points can be used to identify organic compounds. 3. when can fractional distillation be used to separate organic compounds

135. ## chemistry

The watt is the derived SI unit of power, the measure of energy per unit time: 1 W = 1 J/s. A semiconductor laser in a CD player has an output wavelength of 780 nm and a power level of 0.10 mW. How many photons strike the CD surface during the playing of a

136. ## Physics

As a moon follows its orbit around a planet, the maximum gravitational force exerted on the moon by the planet exceeds the minimum gravitational force by 47.9%. Find the ratio rmax/rmin, where rmax is the moon's maximum distance from the center of the

137. ## Spanish check

C. La vida de dos estudiantes. Complete each sentence with the correct form of the verb in parentheses. 1. Rodrigo y su novia estáis despiertos a las siete de la mañana. 2. Ella prepara el café y, a las ocho de la mañana, los dos tomamos el desayuno

138. ## Physics

One kind of slingshot consists of a pocket that holds a pebble and is whirled on a circle of radius r. The pebble is released from the circle at the angle θ so that it will hit the target. The angle in the drawing is 33.4°. The distance to the target

What is a proper organizational strategy for an informative message?

140. ## english

What type of sentence pattern is "Traditional gas-powered cars are harmful to the environment." ?

You place 75 mL sea wter in a graduated cylinder with a mass of 55 grams mass of sea water and cylinder together is 140 grams what is the density of the sea water g/mL

142. ## Spanish check

C. La vida de dos estudiantes. Complete each sentence with the correct form of the verb in parentheses. 1. Rodrigo y su novia estáis (estar) despiertos a las siete de la mañana. 2. Ella prepara (preparar) el café y, a las ocho de la mañana, los dos

143. ## Geometry

how do you write a prof? Also, what is inductive and deductive reasoning?

144. ## world history

I need help answering this can anyone help or give an example thank you Identify a region near where you live and explain what sets it apart as a region. I live in California

145. ## culral anthropology

in anthropology the term culture referes to what

146. ## CIS 312 Information systems for managers

What laws should be enacted to combat cyberterrorism? How could such law be enforced?

N/5-9=1/5

148. ## CHEMISTRY

At what temperature do KCL and KNO3 have the same solubility If a saturated solution of KNO3 at 20.0 C is heated to 80.0 how much more could be dissolved? If a saturated solution of KCL at 90.0 C is colled to 30.0 C how much of the solid will precipitate?

149. ## English

I am having difficulties identifying the literary term in this sentence. What is the literary term in "John told me about when he fell off his bike and broke his arm last year?" Thanks

150. ## Physics

The sinusoidal waveform can be varied by using which of the following parameters?? I. frequency of the carrier wave II.Amplitude of the carrier wave III. Phase angle

151. ## Chemistry

Aspirin (C9H8O4) is synthesized by the reaction of salicylic acid (C7H6O3) with acetic anhydride, C4H6O3. 2C7H6O3 + C4H6O3 −→ 2C9H8O4 + H2O When 19 g of C7H6O3 and 19 g of C4H6O3 react, which is the limiting reagent?

152. ## political science

Do you buy James Madison's argument in Federalist 10 and Federalist 51 that separating powers among various inter-connected governments is a successful cure of the "mischief of factions?" Can one faction gain control of enough of our political system to

154. ## chemistry

A photocell is a device used to measure the intensity of light. In a certain experiment, when light of wavelength 530 nm is directed on to the photocell, electrons are emitted at the rate of 5.1 10-13 Coulombs/sec. Assume that each photon that impinges on

155. ## Math

True or False: 7/10=12/15 is a proportion. I wrote down False. Am I right?

156. ## 1301 history

What motivated Europeans to stablish settlements in the new world? What made it possible for them to undertake those settelments?

157. ## Programming

Write a program that would calculate and display the results for the multiplication table for values ranging from 1 to 100. Your program should print the output for each step and output a new line after 10 items. Provide your program design for the program

158. ## Physics

A) Gravity pulls an area of wet soil and rock downward in a landslide B) An ... Many people know that the weight of an object varies on different planets, but did ... If the Earth's gravitational force causes a falling 74 kg student to accelerate .... the

159. ## chemistry

An electron is accelerated through an electric potential to a kinetic energy of 18.2 keV. What is its characteristic wavelength? (Hint: Recall that the kinetic energy of a moving object is E = 1/2 mv2 where m is the mass of the object and v is the speed of

160. ## calculus

is the lim (x tending to 0) of (sin(0))/0 = 1?

161. ## geometry

An 18 foot ladder is leaned against a wall .if the base of the ladder is 8 feet from the wall,how high up on the wall will the ladder reach?

162. ## Algebra

Use symbols to write the expression and then evaluate it Thirty six squared divided by six cubed The given expression symbol is? Evaluate it

163. ## math

timothy is solving the problem 50+108/ x4.what order of operations should he use

164. ## Fiber Optics

What is fiber optics?

165. ## algebra

find the area of a triangle with the base of 3 2/3 yards and height of 3/7 yrads

166. ## physics

The net external force on the propeller of a 3.6 kg model airplane is 8.4 N forward. What is the acceleration of the airplane? Answer in units of m/s2

167. ## physics

The net external force on a golf cart is 398.2 N north. If the cart has a total mass of 274.1 kg, what is the cart’s acceleration? Answer in units of m/s2

168. ## Biology

You have a flask with 100ml of fresh media. You place 200 bacteria int he flask. Assume that the bacterai were previously growing in the same kind of media and so the lag is 0. If you knew that this species of bacteria has a doubling time of 45 min in

169. ## physics

Before going into orbit, an astronaut has a mass of 55 kg. When in orbit, a measurement determines that a force of 67.1 N causes her to move with an acceleration of 1.1 m/s2. To regain her original weight, should she go on a diet or start eating more

170. ## math

In how many ways can you express the number 2003 as a sum of two prime numbers? A) 1 B) 2 C) 3 D) 4

171. ## math

An empty truck weighs 2000 kg. After the truck was loaded, freight made up 80% of the weight of the loaded truck. At the first stop one fourth of the freight was unloaded. What percent of the loaded truck's weight did the load make up after that? (Hint:

172. ## math

Two blocks sit on a horizontal surface. They are connected to each other by a massless cord. The block on the left has a mass of 5.1 kg and the block on the right has a mass of 3.0 kg. Another massless cord is attached to the block on the right and pulls

173. ## math

The combined capacity of a bottle and a glass is equal to the capacity of a pitcher. The capacity of a bottle is equal to the combined capacity of a glass and a mug. The combined capacity of three mugs is equal to the combined capacity of two pitchers. How

174. ## arithmetic

f(x)=x^2+4x+3=

175. ## mathematics

what is the range of the function f(x)=1/root(|x|-x) and its domain.

176. ## b

how can a disaccharide be produced from two monosaccharides

177. ## biology

how can you recognize carbohydrates from a list of biological molecules

178. ## physics

Two blocks with masses M1 = 3.9 kg and M2 = 5.0 kg are connected with a massless string over two massless and frictionless pulleys, as shown in the Figure. One end of the string is connected to M1 while the other end is fixed. What is the acceleration of

179. ## Algebra 1A

I am so lost! Solve the equation and check the solution -6(t-2)-(t+3)=2 The solution to t is ??

180. ## English

1. Hwajeon is made from rice cake and flowers such as roses and azaleas. 2. Hwajeon is made from rice cake and flowers such as roses or azaleas. (Which one is right? Do we have to use 'and' or 'or'?)

181. ## Geometry

An ccident caused a traffic jam 12 miles long on a straight stretch of a two line highway (one lane in each direction) How many cares do you think were in the traffic jam?

182. ## Physics

Three blocks are located on a horizontal frictionless table. They are connected by a massless cord, as shown in the figure, and pulled to the right. The masses of the three blocks are m1 = 22 kg, m2 = 21 kg, and m3 = 33 kg. The pulling force is equal to T3

183. ## Physics

Two forces act concurrently on point P. One force is 85 N in a direction 35 degrees north of east. The second 95 N force acting at an angle of 227 degrees, what is the magnitude and direction of the resultant ?

184. ## physics

Two blocks m1 = 9.1 kg and m2 = 5.6 kg are connected by a homogeneous rope that has a mass of mr = 1.50 kg. A constant vertical force, F = 193.0 N, is applied to the upper block. What is the magnitude of the acceleration of the system?What is the magnitude

3/2y=16/y+2

186. ## Chemistry

A photocell is a device used to measure the intensity of light. In a certain experiment, when light of wavelength 530 nm is directed on to the photocell, electrons are emitted at the rate of 5.1 10-13 Coulombs/sec. Assume that each photon that impinges on

187. ## subjects and predicates

i need some more help about predicates and subjects what would the subject to these? _____________ i went to school last Wednesday what subject would go on the blank and how about these other blank subjects _________ did not understand the joke.

188. ## Organic Chemistry

Melting Point Determinations between urea and trans-cinnamic acid. Q. If urea were a significant base, specifically how would your Melting Point Diagram be different?

189. ## History

Examine the three themes of the renaissance (humanism. the critical spirit and empiricism). In what ways are these themes reflected in the development of american society between 1660 and 1750?

190. ## statistics

In a distribution with m = 40 and s = 2, a score of X = 46 would be considered an extremely high score.

191. ## chemistry

Explain why the urea in particular, or amides in general, are much weaker bases than amines?

192. ## Algebra

Find the product: -9x(-6x2 + x + 5) A.54x2 – 9x – 45x B.-15x3 – 8x2 – 4x C.54x3 + x + 5 D.54x3 – 9x2 – 45x

193. ## Chemistry

(CH3)2CHCH2CH(CH2CH2CH2CH3)CH2CH(CH3)CH((CH3)2) Looking for skeletal diagram and name of formula.

194. ## economics

. When demand is inelastic, a decrease in price will cause

195. ## earth

how long would it take a radio wave with a frequency of 4.3 X10 to the 5th power Hz to travel from Mars to Earth if the distance between the two planets is approximately 8.00 x 10 to the 7th power km?

196. ## calculus

Differentiate: 1/s+ke^s Do I just use the quotient rule? Thanks

197. ## Chemistry

CH3(C2H5)CHC(C2H5)UCH(CH3)CH((C2H5)2) Looking for skeletal diagram and formula

198. ## history

I need help doing my introduction paragraph for my essay Describe the effects of the growth of Protestantism, and its development on: a)Settlement patterns in america b)the development of early american society c) the development of early American

199. ## english

Which of the following is a fragment? A. The dancer floated across the stage. B. The truth can be unpleasant. C. The canoe withe the blue ropes. D. The rams locked horns, and the tourists watched them from far away. I chose C

200. ## physics

A stuntman sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. The constant speed of the horse is 15.0 m/s, and the man is initially 2.45 m above the level of the saddle.

201. ## geometry

Let "p = I did my homework" and "q = i passed the exam". Write the statement p->q. Then find the inverse, converse, and contrapositive. I'm lost on how to do this.

202. ## College Algebra

Use the distributive property to rewrite the expression (b+6)8=

203. ## math

5t-3/-2=t+3/2

204. ## Math

Instructions: Divide to the nearest hundredth. 1. 13/7 How do i divide it to the nearest hundredth?

205. ## Physics

A ball is thrown upward from the top of a 24.6 m tall building. The ball's initial speed is 12 m/s. At the same instant, a person is running on the ground at a distance of 31.2 m from the building. What must be the average speed of the person if he is to

206. ## Physics

At the beginning of a basketball game, a referee tosses the ball straight up with a speed of 5.4 m/s. A player cannot touch the ball until after it reaches its maximum height and begins to fall down. What is the minimum time that a player must wait before

207. ## Chemistry

Based on the mass of barium sulfate (0.46g), calculate the mass of sulfate in a 0.7g sample of alum. I think I did this right but i'm not sure. 0.46g BaSO4/233.37g BaSO4=0.002mol BaSO4 0.002mol BaSO4 x 1mol SO4/1molBaSO4=0.002molSO4

208. ## dynamics

This deals with a cam follower. The slotted bar rotates with constant angular velocity, theta=12 rad/s. The follower 'A' follows the circular cam as the bar rotates. The arm is pinned at a distance h=0.2m to the left of the cam's center. The radius of the

209. ## us history

what do the following have in common? indentured servants indigenous slaves

210. ## math test

ok this past week i was sick 4 2 days and i need 2 finish this math test by today!!!! and i didn't get 2 learn anything like u know, not practive soo plz anwser these questions: 1.what is a concave polygon 2.what are concentric cicles? 3. what does this

211. ## algebra

Hi, I need some help on my homework. Can you help me? True or False, if False correct the underlined portion. 1) If 3

212. ## physical education

when i am playing basketball i can't seem to get the basketball into the hoop, so how do i shoot a baksetball?

213. ## Algebra

The amount of plutonium given in a sample is determined by the function: A(t)=2.00e^-0.053 t= years How do I figure the rate of decay after four years?

214. ## algebra

Find the unit rate in qt/day: 20 fl oz/min

215. ## science

a wooden block slides down a ramp that is 6 metrs long in 2seconds. What was the average speed of the wooden block?

216. ## Social Studies 8R - Help!!!!!

What role did the freedmen play in Reconstruction governments? Answer - Before the war, African Americans had no voice in southern government. During Recontruction, they not only voted in large numbers, but they also ran for and were elected to public

217. ## algebra

Bianca is 4 years younger the 3 times Marcos age m.write the expression to represent Bianca's age.tell what the variables represent .

218. ## Math

Determine if the following statement is true. For any numbers a and b, if a > B, then a2 > b2. Give a justification for your response. I'm so confused on this one too. I'm trying to find help in my book but cannot understand.

219. ## 1301 history

What is the Great Dying?

220. ## physics

A diver springs upward from a board that is 4.40 m above the water. At the instant she contacts the water her speed is 14.0 m/s and her body makes an angle of 68.8 ° with respect to the horizontal surface of the water. Determine her initial velocity, both

221. ## physics

Your friend weighs 145 lb. What is her mass in kilograms if she went to the moon where the acceleration of gravity is 1/6 that on earth? i know that her weight in newtons is 652.5, and that her mass in kilograms is 65.25, and that her weight in newtons if

222. ## physics

The drawing shows an exaggerated view of a rifle that has been ‘sighted in' for a 91.4-meter target. If the muzzle speed of the bullet is v0 = 392 m/s, there are the two possible angles θ1 and θ2 between the rifle barrel and the horizontal such that

223. ## physics

A major-league pitcher can throw a ball in excess of 36.2 m/s. If a ball is thrown horizontally at this speed, how much will it drop by the time it reaches a catcher who is 17.0 m away from the point of release? I got -1.08 for the answer but my book is

224. ## civics

Q: which industries in the pacific region most affect the nation. can someone please take their time and please help me with this question? Thank you!!!

225. ## chimistary

mg(oH)2(s)+2hcl(g)_Mgcl2(s)+2h2o(g)

226. ## Chemistry

An ordinary mercury-in-glass thermometer is calibrated. In the ice water bath, the mercury level is 2.45 cm above the bulb. In boiling water at 1.00 atm pressure the mercury level is 17.75 cm above the bulb. What is the Celsius temperature when the level

227. ## Math

Prove algebraically that the line joining the midpoints of the nonparallel sides of a trapezoid is parallel to the bases of the trapezoid.

228. ## Trig

A cylindrical tank, 6 foot in radius, lies on it's side parallel and against the side of a warehouse. A ladder leans against the building, passes over and just touches the tank, and has a slope of -3/4. Find the equation of the ladder and the length of the

229. ## information technology

Write a puesdocode to read the marks of a number of students who took an examination, terminated by the mark 101. The psuedocode should count the number of students who pass and the number of students who fail. The pass mark is 60%. Finally the psuedocode

230. ## Physics

A particle's motion is described by x(t)=8t-2t2. (where x is in meters and t is in seconds) f) How fast is the particle moving at t=3s? ______m/s g) How much is it acceleration at t=3s? ______m/s2

231. ## Finance

You have just purchased a new warehouse. To finance the purchase, you've arranged for a 30-year mortgage loan for 80 percent of the \$2,800,000 purchase price. The monthly payment on this loan will be \$17,000. What is the APR and ERA?

232. ## Physics

A crate of potatoes of mass 23.0 kg is on a ramp with angle of incline 30° to the horizontal. The coefficients of friction are μs = 0.78 and μk = 0.35. Find the frictional force (magnitude and direction) on the crate if the crate is at rest. I don't

233. ## chem

How much heat is necessary to change 5 grams of water at 10 degrees celcius to water at 70 degrees celcius?

234. ## Honors chemistry

You need to boil 307 g of water (specific heat = 4.184) so you can make a cup of your favorite drink. If room temperature is 20.15 oC, how much heat is needed to boil the water?

235. ## Chemistry

What is a minimum volume (in gallons) of ethylene glycol (CH2OHCH2OH, an antifreeze) that has to be added to 3.00 gal of water if you desire this engine cooling solution (for a auto radiator) NOT to be frozen below - 34.1 oC - a very cold Siberian or

236. ## Math

What is 6 less than half a number?

237. ## algebra 1

make an imput-output table for the function. use 0,1,2,and 3 as the domain. the qyestion is y=x+18

239. ## maths

(18/9(4-2)+5)

240. ## Accounting

The going concern assumption is concerned with a. The company's ability to continue operations long enough to carry out its existing obligations. b. Measuring ongoing business activities at their exchange price at the time of the initial external

241. ## Algebra

Pat had \$3.he gets some money from his parents .he now has twice as much money as dani .write an expression to represent how much money dani has.tell what the variable represents .

242. ## health

its it good to provide long activiyies for clients to keep them occupied for a long period True or False

243. ## physics

You are traveling in a convertible with the top down. The car is moving at a constant velocity 20.0m/s due east along flat ground. You throw a tomato straight upward at a speed of 15.9m/s. how far has the car moved when you get a chance to catch a tomato?

244. ## Accounting

If an investor can use accounting information for two different companies to evaluate the types and amounts of expenses, the information is said to have the quality of Answer a. Neutrality b. Comparability c. Materiality d. Consistency

245. ## health

A person with early dementia-mid stage of dementia may have ability to a)remember recent event b)remember what day it is c) remember the past d) all of abouve

238x123= ?

247. ## Precalculus

Give an example of an increasing function whose domain is the interval [0,1]but whose range does not equal the interval[f(0),f(1)] please show me the work

248. ## Accounting

Scott Brothers, Inc. follows the qualitative characteristic of consistency. This means that Answer a. Scott applies the same accounting principles as its competitors. b. Scott has elected certain accounting principles that can never be changed. c. Scott

249. ## Accounting

Which of the following accounts is decreased by a debit entry? Answer a. Accounts Payable b. Cash c. Prepaid Insurance d. Insurance Expense

250. ## chemistry

A metal ring with a mass of 18.36 g undergoes a change in temperature of 26.37 oC. The energy change, or heat, required for this change in temperature is 1508 Joules. What is the specific heat of the ring?

251. ## physics

an airplane with a speed of 40.4 m/s is climbing upward at an angle of 54 degrees with respect to the horizontal. When the planes altitude is 520 m, the pilot releases a package. a. calculate the distance along the ground measured from a point directly

252. ## physics

An airplane is flying with a velocity of 252m/s at an angle of 30 degrees with the horizontal. when the altitude of the plane is 2.7km, a flare is released from the plane. the flare hits the target on the ground. what is the angle theta?

253. ## precalculus

Precalculus-------Give an example of three functions f,g,h none of which is a constant function such that? fog=foh but g is not equal to h. I tried with many functions but not getting like f=x g=1+x then h=?or any other example so that we get fog=foh

254. ## Pre calculus

Precalculus-------Give an example of three functions f,g,h none of which is a constant function such that? Precalculus-------Give an example of three functions f,g,h none of which is a constant function such that? foh=goh but f is not equal to g I tried

255. ## Precalculus plese check urgent

Give an example of a function whose domain is{3,4,7,9} and? whose range is {-1,0,3} plese give me the trick of finding such functions Is this answer coreect the function must only consist of individual points: {(3, -1), (4, 0), (7, 3), (9, 0)} is an

256. ## information technology

Write a puesdocode to read the marks of a number of students who took an examination, terminated by the mark 101. The psuedocode should count the number of students who pass and the number of students who fail. The pass mark is 60%. Finally the psuedocode

257. ## physics

Two blocks are connected by a lightweight, flexible cord that passes over a frictionless pulley. If m1 = 3.8 kg and m2 = 9.2 kg, and block 2 is initially at rest 140 cm above the floor, how long does it take block 2 to reach the floor?

258. ## Chemistry

If 15.0g of KCL is added to 100.0g of water at 30.0 C, how much more must be added to saturate the solution

259. ## pre algebra

What is the rule for this pattern? 1,negative 2,4, negative 5,7,negative8. Thanks

260. ## precalculus

Suppose g is an even function and f is any function such that the composition fog is defined. show that fog is an even function

261. ## Biology Help!!

chemical information is transmitted from one neuron to another through neurotransmitters, terminal buttons, or axons?

262. ## physics

A golfer hits a shot to a green that is elevated 2.90 m above the point where the ball is struck. The ball leaves the club at a speed of 17.5 m/s at an angle of 41.0˚ above the horizontal. It rises to its maximum height and then falls down to the green.

263. ## Biology Help!!

valleys in the brain surface are called ______. sulci, fissures, or both? Give an explanation.

264. ## Science

the number of grams of CuSo4 times 5 H2O that will dissolve in 100g of H20 at 100 degrees

265. ## political science

10.What according to Reeves what the most significant development by 1900? 11.When was the low point for the Presidency according to Reeves?

266. ## precalculus

suppose the only information you know about a function f is that the domain of f? is the set of real numbers and that f f(1)=1,f(2)=4,f(3)=9,f(4)=16what can you say about the value of ,f(5). Hint the answer to this problem is not 25 the shortest correct

267. ## math

what is 8x3x3 in exponential form

268. ## Physics

At t = 0, an automobile traveling north begins to make a turn. It follows one-quarter of the arc of a circle of radius 10.1 m until, at t = 1.52 s, it is traveling east. The car does not alter its speed during the turn. (a) Find the car's speed. (b) Find

269. ## math

A rectangular box is to have a square base and a volume of 50 ft3. The material for the base costs 42¢/ft2, the material for the sides costs 10¢/ft2, and the material for the top costs 24¢/ft2. Letting x denote the length of one side of the base, find a

The net present value method is a more conservative technique for selecting investment projects

271. ## Biology Help!!

CT scans are not useful for studying cognitive processes because these processes occur in real time or occur in regions of the brain not accessible to CT scans Please explain.

272. ## physics

1.Turner’s treadmill starts with a velocity of −2.4 m/s and speeds up at regular intervals during a half-hour workout.After 23 min, the treadmill has a velocity of −7.0 m/s. What is the average acceleration of the treadmill during this period? Answer

273. ## Electrics Dewberry

Find the rms current in a 2.0uF capacitor connected across 120V rms, 65Hz AC power. Thanks!

274. ## Physics Dingleberry

A friend working on a psychology experiment asks you for help with the design of a simple circuit. She needs an LC timing circuit in which the voltage on a fully charged capacitor drops to zero in 15s . She has a 20H inductor available, but doesn't know

275. ## Doogleberry Physcis

In an L-R-C series circuit, the resistance is 380 Ohms, the inductance is 0.400 H, and the capacitance is 2.00×10−2 uF. What is the resonant frequency of the circuit? (omega naught) The capacitor can withstand a peak voltage of 570 volts. If the voltage

276. ## calculus

A book designer decided that the pages of a book should have 1-in. margins at the top and bottom and 1 2 in. margins on the sides. She further stipulated that each page should have an area of 50 in.2. Find a function in the variable x, giving the area of

277. ## Global

What were the 2 big parts of ancient economies?

279. ## Sindhi

the velocity of a projectile at its highest point is 40 m/s.if the projectile was in air for 6 second before falling the ground calculate angle of projection of the projectile.

280. ## Physics

Your car can accelerate at 5m/^2 without a trailer. You add a trailer to your car that has 3 times the mass of your car. At what rate can your car (plus trailer) accelerate now? After accelerating the car travels at a constant speed of 30 m/s. What is the

281. ## physic

a golf ball of mass 0.045 kg is moving in the +x direction with a speed of 9.0 m/s, and a baseball of mass 0.145 kg is moving in the -y direction with a speed of 7.0 m/s. What are the magnitude and direction if the total momentum of the system consisting

282. ## chem

At what temperature do KCL and KNO3 have the same solubility

283. ## math

Please suggest me a easy shortcut method to factorise cubic equations .

284. ## finance

Having previously identified the location of its Greenfield investment, Acme, a multi-billion public MNE that is incorporated in the U.S., must next obtain external financing for its proposed overseas production facility. It has been estimated that the

285. ## Social Studies 8R

What were two accomplishments of reconstruction governments. What were two problems???

286. ## general chemistry

How many grams of Ammonium Nitrate would you use to make a 500 ml of 5.684 M solution? Answer

287. ## 1301 history

What effect did the enlightenment and the Great Awakening have on the life in British North America?