# Questions Asked onJanuary 22, 2012

1. ## Chemistry

Predict whether the following reactions will be exothermic or endothermic A) N2(g)+ 3H2(g) --> 2NH3(g) B) S(g) +O2(g) ---> SO2(g) C) 2H2O(g) ---->2H2(g) + O2(g) D) 2F(g) +F2(g) Bond H-H 432 kj/mol N-N(triple bond) 942 kj/mol O=O 494 KJ/Mol F-F 155 KJ/mol

2. ## chemistry

What is the pH of a 2.8 M solution of HClO4?

3. ## physics

a ball of mass 8kg falls from rest from a height of 100m.neglecting air resistance,calculate its total energy after falling a distance of 40m

4. ## chemistry

A solution of NaOH(aq) contains 6.2 g of NaOH(s) per 100.0 mL of solution. Calculate the pH and the pOH of the solution at 25 °C.

5. ## chemistry

In a butane lighter, 9.5 of butane combines with 34.0 of oxygen to form 28.7 carbon dioxide and how many grams of water?

6. ## chemistry

Find the formula for the compound that contains 72.4% iron and 27.6% oxygen.

7. ## chemistry

calculate the energy, in joules and calories required to heat 25.0g of water form 12.5 deg. celcius to 25.7 deg. celcius i know the answer just need to see how to do it especially the calories

8. ## Chemisty

The compound potassium carbonate is a strong electrolyte. Write the reaction when potassium carbonate is put into water

9. ## chemistry

What mass of water must be added to 0.5 mol of glucose to make a solution of 25 percent by mass?The molar mass of glucose is 180 g/mol.

10. ## calculus

Find the volume of the solid generated by revolving the region bounded by the graphs of the equations about the x-axis. (Round your answer to three decimal places.) y = e^−x y=0 x=0 x=7 I got the answer ~10.783 Idk why it's wrong

11. ## chemistry

Burning 32 g of CH4 in excess oxygen will produce how much CO2 according to the equation CH4(g) + 2 O2(g) → CO2(g) + 2 H2O(g)

12. ## science

The acceleration due to gravity calculated this way works well for objects near the Earth’s surface. How would you have to change the above equation if the object was 100,000 meters above the ground? (Note: this question refers to Newton’s equation for

13. ## geometry

Express the following as a function of a single angle sin 20 degree cos 30 degree + cos 20 degree sin 30 degree

14. ## ChemB

measurements of carbon 14 taken from linen wrappings of the book of isaiah from the dead sea scrolls indicate that the scrolls contain 79.5% of the carbon 14 expected in living tissue. how old are these scrolls if the half life of carbon 14 is 5730 years?

15. ## Statistics

Given that a sample is approximately bell-shaped with a mean of 60 and a standard deviation of 3, the approximate percentage of data values that is expected to fall between 54 and 66 is

16. ## physics

A boy throws the ball vertically upwards with an initial velocity of 15m\s,what is the magnitude and direction of the ball

17. ## physics

Two boats start together and race across a 42 km wide lake and back. Boat A goes across at 42 km/h and returns at 42 km/h. Boat B goes across at 21 km/h, and its crew, realizing how far behind it is getting, returns at 63 km/h. Turnaround times are

18. ## physics

A stunt woman sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. The speed of the horse is 13.5 m/s, and the woman is initially 2.60 m above the level of the saddle. (a) What must be the horizontal distance between the

19. ## Social Studies 7R

What was the Declaration of Independence and why was it written?

20. ## Chemistry

A chemical reaction is run in which 132 joules of work is done by the system amd the internal energy changes by 469 joules. Calculate the amount of heat transferred. u=q+w I was going to do 469 = q + 132 but I think this is wrong.

21. ## physics

A 200.0 kg astronaut and equipment move with a velocity of 2.00 m/s toward an orbiting spacecraft. The astronaut will fire a 100.0 N rocket backpack to stop his motion relative to the spacecraft. (a) What acceleration is attained by the rocket backpack?

22. ## Chemistry

How many moles of atoms are in one mole of AlPO4?

23. ## Pre calc

Use the half-angle formulas to determine the exact values of the sine, cosine, and tangent of the angle. 67° 30' 7 sin(67° 30')= cos(67° 30')= 4 tan(67° 30')=

24. ## physics

A truck on a straight road starts from rest and accelerates at 2.0 m/s2 until it reaches a speed of 20 m/s. Then the truck travels for 20 s at constant speed until the brakes are applied, stopping the truck in a uniform manner in an additional 5.0 s. (a)

25. ## Chemistry

Suppose you wanted to heat a mug of water (250 mL) from room temperature 25 C to 100 C to make a cup of tea. How much energy (in units of calories and joules) would you need from your microwave?

26. ## Chemistry

A sample of Manganese (II) Chloride has a mass of 19.8 grams before heating, and 12.6 grams after heating until all the water is driven out. Based on this information, how many water molecules were attached to each molecule of Manganese (II) Chloride?

27. ## science

why ice floats on water?

28. ## chemistry

when hydrogen is fitted into reactivity series of metals , it comes immediately after

29. ## world history

To what did the U.S. Supreme Court case Brown v. Board of Education refer? A. women's rights in America B. racial segregation in American schools C. the 1960s counterculture in America D. American reaction to terrorist attacks I say B.

30. ## Physics

Find the current in the 10.0 resistor in the drawing (V1 = 20.0 V and R1 = 15.0 )..?

31. ## Chemistry

Xe(g) + F2(g) ----uv light---> Xe F2(s) XeF2(g) + 2F2(g) ---catalyst---> XeF6(s) XeF6(s) + H2O(l) ------> Xe O3(s) + 6HF(g) Looking at these three reactions respond the following: a) For each 0.0250 grams of xenon hexaflouride that reacts, what mass of

32. ## physics

A puck on a horizontal, frictionless surface is attached to a string that wraps around a pole of finite radius, as shown in the figure . As the puck moves along the spiral path, does its speed increase, decrease, or stay the same?

33. ## Chemisty

The compound copper(II) nitrate is a strong electrolyte. Write the reaction when copper(II) nitrate is put into water

34. ## physics

A rocket moves straight upward, starting from rest with an acceleration of +25.5 m/s2. It runs out of fuel at the end of 4.26 s and continues to coast upward, reaching a maximum height before falling back to Earth. (a) Find the rocket's velocity and

35. ## physics

a 43.7 kg student runs down the sidewalk and jumps with a horizontal speed of 4.48 m/s onto a stationary skateboard. the student and the skateboard move down the sidewalk with a speed of 4.25m/s. find the mass of the skateboard in units of kg. how fast

36. ## chemistry

The heat of vaporization of bromine at its boiling point (59.6 °C) at 1.00 atm is 29.54 kJ/mol. Calculate the vapor pressure of bromine at 37.8 °C.

37. ## world history

The Japanese living in America were seen as a threat to national security after the Japanese attack on Pearl Harbor, so they were sent to live in camps in the interior of the country. true or false

38. ## French

What is French club and what do you do at French Club?

39. ## Chemistry

Based on the balanced equation 2NBr3 + 3NaOH → N2 + 3NaBr + 3HOBr calculate the number of of excess reagent units remaining when 116 NBr3 molecules and 180 NaOH formula units react? I calculated the excess reagent to be NaOH. So is the units of remaining

40. ## Math-Probability

Data collected on volcanic eruptions give a mean time between eruptions of 29 months. Assume these eruptions occur as a Poisson process in time, find the: (a) Expected number of eruptions during the five-year period beginning from the time you have read

41. ## History

How did the truman policy come about?

42. ## Chemistry

THE RATE LAW FOR THE REACTION 2NO + 02 = 2NO2 IS FIRST ORDER IN OXYGEN AND SECOND ORDER IN NO. PROPOSE A MECHANISM IN WHICH EACH STEP IS BIMOLECULAR. SPECIFY THE SLOW STEP. I HAVE NO IDEA WHAT TI DO. HELP PLEASE? THANKS.

43. ## History

How had U.S. policy toward Europe changed by the end of 1947? Why did this change occur?

44. ## Physics

At an air show, a jet plane has velocity components vx = 695 km/h and vy = 440 km/h at time 4.85s and vx= 933km/h and vy = 465 km/h at time 7.12 s. For this time interval, find (a) the x and y components of the plane’s average acceleration and (b) the

45. ## Physics

At an air show, a jet plane has velocity components vx = 695 km/h and vy = 440 km/h at time 4.85s and vx= 933km/h and vy = 465 km/h at time 7.12 s. For this time interval, find (a) the x and y components of the plane’s average acceleration and (b) the

46. ## Physics

You have 2 photos of a bicyclist. One shows the rider at the corner of Third and Main streets, the other shows the rider at Twentieth and Main. There are lampposts at every corner in this town, and the first picture shows it to be 10:32:00 exactly. The

47. ## science

Why is a pizza cutter handle a lever?

48. ## Math

Please show me how to solve: Doctors can use radioactive iodine to treat some forms of cancer. The half-life of iodine - 131 is 8 days. A patient receives a treatment of 12 millicuries of iodine - 131. (A mullicurie is a unit of radioactivity.) How much

49. ## world history

Which of the following is NOT true about the arms race between the United States and the Soviet Union during the cold war? A. The Soviet Union created the first man-made satellite, prompting the United States to develop the National Aeronautics and Space

50. ## Chemistyr

Why must the limiting reactant be used to determine the theoretical yield?

51. ## math

An artifact was found and tested for its carbon-14 content. If 76% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon-14 has a half-life of 5,730 years.

52. ## math

every week Brady gets \$2.50 more for his allowance than Max does. They spend \$6 on snacks and save the rest. Brady saves \$72, but Max saves only \$52. How many weeks does it take Brady to save \$72? !@#\$%^& much money does Max get every week?

53. ## math

If Julie bought 8 T-shirts, she would be short \$28. If she bought 4 T-shirts and 3 baseball hats, she would have \$17 left. If each hat cost \$5, how much money did she have in the beginning?

54. ## math

A flower bed is in the shape of a triangle with one side twice the length of the shortest side, and the third side is 19 feet more than the length of the shortest side. Find the dimensions if the perimeter is 143 feet.

55. ## physics

Two boats start together and race across a 42 km wide lake and back. Boat A goes across at 42 km/h and returns at 42 km/h. Boat B goes across at 21 km/h, and its crew, realizing how far behind it is getting, returns at 63 km/h. Turnaround times are

56. ## physics

Two boats start together and race across a 42 km wide lake and back. Boat A goes across at 42 km/h and returns at 42 km/h. Boat B goes across at 21 km/h, and its crew, realizing how far behind it is getting, returns at 63 km/h. Turnaround times are

57. ## physics

Two boats start together and race across a 42 km wide lake and back. Boat A goes across at 42 km/h and returns at 42 km/h. Boat B goes across at 21 km/h, and its crew, realizing how far behind it is getting, returns at 63 km/h. Turnaround times are

58. ## physics

A rocket moves straight upward, starting from rest with an acceleration of +25.5 m/s2. It runs out of fuel at the end of 4.26 s and continues to coast upward, reaching a maximum height before falling back to Earth. (a) Find the rocket's velocity and

59. ## Chemistry

For the reaction Al(s) + 3 HCl(aq)->AlCl3(s) +3/2 H2(g) it was observed that when 4.00g of aluminum reacted with excess HCl, exactly 30,0 kJ of heat was released. What is the delta H for this reaction? I do not understand how to get the delta H value.

60. ## physics

The lob in tennis is an effective tactic when your opponent is near the net. It consists of lofting the ball over his head, forcing him to move quickly away from the net (as shown in the figure below). Suppose that you loft the ball with an initial speed

61. ## Physics

A speedboat starts from rest and accelerates at +1.98 m/s2 for 8.25 s. At the end of this time, the boat continues for an additional 5.58 s with an acceleration of +0.348 m/s2. Following this, the boat accelerates at -1.42 m/s2 for 7.22 s. (a) What is the

62. ## chemistry

calculate[OH-],[H+] of a .20 M solution of triethylamine Kb=4.0*10^-4

63. ## alg2/trig

1)3x^2-12x-21 solve by completing the square in simplest radical form 2) (1/x+3)-(2/3-x)=(4/x^2-9)find values of x 3)3/radical(3a^2b^4) is equivalent to 4) factor completely 27x^-75x^4

64. ## Math-Probability

Consider a collection of n biased coins, each showing Heads with probability p and Tails with probability 1-p , independently of the others. The coins are tossed and all coins showing Heads are collected together and tossed again. Write down an expression

65. ## Thermodynamics- Fluids Mechanics

The viscosity of a fluid is to be measured by a viscometer constructed of two 3-ft-long concentric cylinders. The inner diameter of the outer cylinder is 6 in, and the gap between the two cylinders is 0.05 in. The outer cylinder is rotated at 250 rpm, and

66. ## Physics

A 1.46 × 10 4 kg railroad car moving at 7.05 m/s to the north collides with and sticks toanother railroad car of the same mass that is moving in the same direction at 1.76 m/s. What is the velocity of the joined cars after the collision? Answer in units

67. ## Math 543

The number 3136 is the sum of the first how many odd whole numbers?

68. ## Math

Please explain how you got this answer as well! A shape has a perimeter of 3.00 M. Is it possible that one side's length is only 5 cm? Explain

69. ## Math 543

The number 3136 is the sum of the first how many odd whole numbers?

70. ## math

In a group of 9 coins, one is fake and weighs slightly more. What is the fewest number of times you need to use a pan balance to find the counterfeit coins? (A pan balance is a scale used to measure weights, where weights are placed in two pans. The

71. ## Physics

A hockey player makes a slap shot on a 2.0 kg stationary puck, exerting a 30N force for .16 seconds. A What impulse is given to the puck? B. With what velocity does the puck leave the stick?

72. ## Geometry

Explain why the the inverse of sine times 1.5 does not make sense.

73. ## world history

Which system of government rests furthest left on the political spectrum and, as a totalitarian regime, focuses on the government owning all aspects of the economy, including property and the means of production?

74. ## History

In 1-2 paragraphs answer the following: What was the Truman Doctrine and how did it come about?

75. ## Chem

how can the concept of specific heat capacity of water be used to explain the heating and cooling patterns of oceans and climate on the plane?

76. ## world history

Hitler�s �Final Solution� referred to the extermination of the Jewish population living in and around Germany during the time of World War II. This resulted in the execution of over 6 million Jews. true or false I say its true

77. ## math

how do you solve this.prove: cos2A plus cosA divided by sin2A minus sinA equal to cos2A plus 1 divided by sinA

78. ## Physics

A hockey player makes a slap shot on a 2.0 kg stationary puck, exerting a 30N force for .16 seconds. A What impulse is given to the puck? B. With what velocity does the puck leave the stick?

79. ## physics

An object of mass 1,5 kg,is pulled along a rough horizontal surface by a horizontal force F.calculate the value of F if the force of friction is 1,3 N and the object accelerates at 2m.s-2

80. ## World history

How did king leopold develop his image as a great humanitarian leader?

81. ## Calculus

Suppose you have a rational function that its denominator is (X-c) and numerator can be any function. Suppose you need to find the limit of this rational function given as x goes to value c. Can you always say that for this problem the limit does not

82. ## Statistics

Shown below are the data giving the length of life of lights in an underground tunnel. 9.0 months 7.0 months 8.2 months 8.3 months 7.8 months 8.1 months 7.5 months 7.6 months 9.1 months 7.4 months I calculated the standard deviation to be about 0.679.

83. ## math02 / trigonometric

solve the following oblique triangles using sine law. Given: Y=55 degree 10 minute, b=125cm, beta=9 degree?

84. ## physics

The classify the as synthesis, decomposition, Single replacement. Double replacement. 2 Al +3NiBr2. 2AlBr3+3Ni

85. ## Social Studies

Have to write a 1 to 2 paragraph report on Crispus Attucks.

87. ## Math-Probability

Consider a collection of biased coins, each showing Heads with probability and Tails with probability , independently of the others. The coins are tossed and all coins showing Heads are collected together and tossed again. Write down an expression for the

88. ## world history

which country was invaded by German forces, in spite of having signed a non-aggression pact with Germany in 1939?

89. ## physics

Jana investigates the movement of a lift by placing an apple with a mass of 100 g on a Newton scale. During the first 3 seconds of movenent the scale registers a reading of 1,2 N. Over the next 5 seconds it registers 0,98 N and for the last 2 seconds the

I have to write an essay over society's biggest problem. It says: " In our society we face a number of problems, such as crime, poverty, and pollution. What do you think is the biggest problem we face in our society today, and why is it a serious

91. ## Calculus

What is total volume for 36" X 2" X 2"

92. ## physics

During a Science day learners use a plastic cold drink bottle as a rocket.They use a bicycle pump to increas the presure inside the bottle.When the presure becomes high enough,the bottle is launched vertically upwards into the air.The bottle returns to its

93. ## english

unscramle this word-crimeamsg

94. ## English

Can you give me a 1 paragraph example of casual analysis? Its for my report in English. Thank you so much! :)

95. ## Chem

explain why the boiling point of temperature of water in a pressure cooker can be greater than 100C

96. ## math116

solve using the multiplication principle, -4x>1/11

97. ## Social Studies 7R (Q2)

Why did Britian pass the Intolerable Acts? What did it state? PLEASE HELP!!!! I DON'T GET THIS!!!! THANK YOU!!!

98. ## Public Health / Science

Where can I find the top five health problems in Florida? I have checked the Florida Department of Health site but I am not having luck. Any help would be appreciated. Thanks.

how to solve w/3=17

100. ## chemistry

Calculate the number of moles of each ion in 10.5 mL of 0.205 M cadmium phosphate solution.

101. ## Writeacher

Thank you soooo much. you have helped me so much since yesterday, i really appreciate it especially since you helped me removew my doubtings. Again thank you.

102. ## psych

what are Similarities and Differences of Gangs and Organized Crime Groups

103. ## Social Studies

What Is The New Jersey Plan

104. ## physics

what is reaction product when ethene is treated with steam using phosphoric acid as catalyst at 300 degrees celcious

105. ## world history

The Marshall Plan was enacted to support a U.S. foreign policy to keep communism from spreading, also known as. A. containment. B. deterrence. C. the Nuremberg Trials. D. NATO. I say A. CONTAINMENT

106. ## physics

When Maggie applies the brakes of her car, the car slows uniformly from 15.8 m/s to 0 m/s in 2.25 s. How far ahead of a stop sign must she apply her brakes in order to stop at the sign? Answer in units of m

107. ## Social Studies 7R

What was the purpose of the First Continental Congress????? Please Help! PS: This is also a curious question.

108. ## Math

f (x)= {\$50 if 0< x 60} What is the cost if the repair man works for 45 minutes? What is the cost if the repair man works for 105 minutes? What is the computer repair man’s rate policy? Explain in real terms

109. ## physics Help

I don't how to do this please help the the classify the reaction as. Synthesis decomposition single replacement double replacement. 4Al+3O2. 2Al2O3. 2NaCl. 2Na+ Cl2. Cacl2+F2. CaF2+ Cl2

110. ## world history

Which two superpowers engaged in an arms race during the cold war as they competed with each other to acquire advanced weaponry and build up their militaries? I say United States and the Soviet Union

111. ## world history

What is true about the key German leaders who were responsible for the Holocaust? A. The Marshall Plan provided them with the opportunity to emigrate to the United States and avoid trial. B. The Potsdam Conference, held in Potsdam, Germany, revealed that

112. ## effective listening

Your friend and you are discussing what you’re learning and one of them says the following: “Effective listening? There’s nothing to it! You just sit there and listen. And anyway, it’s passive – it doesn’t take any energy or concentration."

113. ## english

I have to write a compare contrast essay does this sound ok? One of the toughest decisions that you are going to face as a parent is to decide where to send your children to get their education. There are many reasons why public schools are academically

114. ## physics

HELP HELP HELP Two tiny objects with equal charges of 83.0 µC are placed at two corners of a square with sides of 0.320 m, as shown. How far above and to the left of the corner of the square labeled A would you place a third small object with the same

115. ## physics Help

Then classify the reactions as synthesis decomposition single replacement double replacement (NH4)2SO4+BA(NO3)2. BaSO4+ 2NH4NO3.

116. ## math

I need to find out the type of triangle (by the type of angles). Is triangle acute, right or obtuse, when the lenghts of triangle sides are: a) 7, 8, 12 b) 20, 15, 40 c) 2/3, 8/9, 10/9

117. ## science fair

how do you make the following sentence in a if...ans then statement? if you multitask the result won't be as good as you not multitasking depending on what you multitask. thank you

118. ## world history

In what nation did the Soviet Union place missiles, which was viewed as a threat to the United States and prompted action by President John F. Kennedy I say Cuba

119. ## chemistry

An insulated beaker contains 250.0 grams of water at 25oC. Exactly 41.6 g of a metal at 100.0oC was dropped in the beaker. The final temperature of the water was 26.4oC. Assuming that no heat is lost in any other way, calculate the specific heat of the

120. ## world history

Mikhail Gorbachev's concept of glasnost referred to an openness to communicate to the West in an attempt to pull the Soviet Union out of a poor economy. I say false

121. ## physics

You are at a baseball game and the pticher throws a fast ball that accelerates to the batter at 50 m/s^2. Assume that the baseball has a mass of 0.15 kg. How much force (in Newtons) must the batter apply to the ball to lay down a perfect bunt that stops

122. ## Science

If a car is going 65mph makes a 90 degree, what changes?

Thank you!!!!!!!!!!!!!!

124. ## Science

What is a reference point in determining force, velocity,speed?

125. ## History

How long has the gun control law been going on in the USA??

126. ## physics

An object is dropped from rest. What is its instantaneous speed when it has been in motion for 8 s? The acceleration of gravity is 9.8 m/s2 . Answer in units of m/s

127. ## English

What does the things you carry say about you? The things we carry is largely determined by ________.

128. ## World history

How did the cold war end?

129. ## Math

a farmer wants to put a fence around a rectangular field and then divide the field into three rectangular plots by placing two fences parallel to one of the sides. if the farmer can only afford 1000 yards of fencing, what dimensions will give the maximum

130. ## English102

Could someone take a look at my sentence outline for my english class, I have been working on this for awhile and I do not know why this is so hard for me to get. Hopefully I am getting it a little betternow, thanks for all the help. Thesis Statement:

131. ## world history

What nation experienced the Velvet Revolution, a peaceful and non-violent movement that removed communists from power? I say Czechoslovakia

132. ## algebra

D is the set of whole numbers less than 3. (1 point) D = {0,1,2,3,4,5}; D = {x is a whole number, x < 3} D = {0,1}; D = {x | x < 3} D = {0,1,2}; D = {x | x is a whole number, x < 3} D = {0,1,2,3,4,5,6,7}; D = {x < 3}

133. ## chemistry

Calculate the number of moles of each ion in 10.5 mL of 0.205 M cadmium phosphate solution.

134. ## trig

4cos^2 theta = 3 where 0 degrees < theta< 360

135. ## chemistry

Week 5, Day 4, respond to the problem statement assigned to you for this week. At a prominent state hospital, a 45-year-old woman is receiving a ‘combined modality' treatment for the initial stage of breast cancer. State the two aspects included in this

136. ## Physics

A 1500 kg car traveling at 17.6 m/s to the south collides with a 5000 kg truck that is initially at rest at a stoplight. The car and truck stick together and move together after the collision. What is the ﬁnal velocity of the two-vehicle mass? Answer in

137. ## chemistry

7.How might this method of finding thickness of the aluminum be used in finding the size of the molecule?

138. ## world history

Why is war against terrorists difficult to fight? C. Members of terrorist groups are scattered throughout the world, so there is no one clear target. D. Terrorists leave no trace of their plans. I say C.

139. ## English

Thank you very, very much. Here are some more sentences on the summary of Orwell's 1984. I referred to the websites you suggested to me. 1)The novel describes a future England, Airstrip One, no longer the head of an Empire, but an outpost of Oceania, a

140. ## world history

Which two nations rose as the world's superpowers after World War II? I say United States and the Soviet Union

141. ## English

Here is the second part. Thank you very much. Hopefully you can have a look at it, too. 1) The Ministry of Truth, which exercises complete control over all media in Oceania, employs Winston at the Ministry's Records Department, where he doctors/alters

142. ## essay: inventions

I have to write an essay for my english class. The "subject" is inventions. I came up with the phone, the car, electricity, and peanut butter. Peanut butter was more of a joke. I think that I should do electricity. If I did electricity, I could put

143. ## math

The half-life of 234U, uranium-234, is 2.52 105 yr. If 98.3% of the uranium in the original sample is present, what length of time (to the nearest thousand years) has elapsed?

144. ## math problem

help me solve system of equation x+7y=9 (1) x=4-7y (2)

145. ## Math

Find the coordinates of the y-intercept for the given equation x+y=2

146. ## Anthropology

Are we affected more by nature or nurture growing up? Nature being a person’s genes determining their physical and behavioral traits and nurture being influenced by their environment (parenting style, education, socialization).

147. ## math

The height of a ball that was batted into the air at 150 feet per second is a function of t, the time in seconds after the ball was hit. The height is determined by subtracting 15 times the square of t from 150 times t. Which equation can be used to find t

148. ## Physics

A meteor streaking through the night sky is located with radar. At point A its coordinates are (5.20km,1.20km), and 1.16s later its has moved to point B with coordinates (6.08km, 0.900km ). a) find the x comonent of it average velocity between A and B.

149. ## Physics

(a) What is the acceleration of an automobile that goes from a dead stop to a speed of 50 m/s in 5 s? (b) Assume that you are driving an automobile that has a mass of 800 kg. If this acceleration is applied, how much force (in Newtons) is applied?

150. ## physics

(a) What is the acceleration of a car in m/s² that doubles its speed from 36.0 km/h in 5.00 s? (b) What net force acted on this car if its mass was 1,000.0 kg?

151. ## math

The atmospheric pressure P in pounds per square inch (psi) is given by the formula below, where a is the altitude above sea level (in miles). If a city has an atmospheric pressure of 13.25 psi, what is its altitude? (Recall that 1 mi = 5,280 ft. Round your

152. ## Chemistry

A lightyear is a unit of length equal to the distance that light travels in 1 year. What is 1 lightyear expressed in units of meters? The speed of light is 3.00 × 100^8 m/s.

153. ## science

The acceleration due to gravity calculated this way works well for objects near the Earth’s surface. How would you have to change the above equation if the object was 100,000 meters above the ground?

154. ## chemistry

looking at all the averages on the front board, give at least three possible reasons for the values being different. classroom values from board: 10, 15, 25, 18, 39, 45

155. ## world history

Who came to power in China, instituting a Communist regime that would bring great suffering to the nation's people? I say Mao Zedong

156. ## physics

A 95 g tennis ball is traveling at 106 km/h when it bounces of a wall and travels in the opposite direction it came from at a speed of 88 km/h. a. Determine the impulse on the ball if the. (don’t forget that it is a vector) b. If the average force

157. ## physics

A 95 g tennis ball is traveling at 106 km/h when it bounces of a wall and travels in the opposite direction it came from at a speed of 88 km/h. a. Determine the impulse on the ball if the. (don’t forget that it is a vector) b. If the average force

158. ## physics

a .300 kg baseball is thrown at a speed of 6.5m/s. the batter hits the ball and it flies into the outfield at a speed of 19.2 m/s. How much work is done into hitting the baseball

159. ## chemistry

A solution of NaOH(aq) contains 6.2 g of NaOH(s) per 100.0 mL of solution. Calculate the pH and the pOH of the solution at 25 °C.

160. ## science

how wind influence tides

161. ## physics

A meteor streaking through the night sky is located with radar. At point A its coordinates are (5.20km,1.20km), and 1.16s later its has moved to point B with coordinates (6.08km, 0.900km ). a) find the x comonent of it average velocity between A and B.

162. ## math

Instead of laying off workers, a company cut all employees hours from 40 hours to 3 hours a week. By what percent were employee hours cut?

163. ## Chemistry

What is the concentration of SO3^2- in a 0.043 M solution of Sulfurous acid (H2SO3) in water? The value of Ka1 for H2SO3 is 1.300 x 10-2 and the value of Ka2 is 6.300 x 10-8.

164. ## physics

6) A sub has a volume of 20 m3 and a density of 1500 kg/m3. It sinks to a depth of 40 meters. The density of sea water is 1025 kg/m3. a. What is the pressure on the sub at this depth? b. The sub has a window with a diameter of 30 cm. What is the net force

165. ## History

What are some issues today about gun control? I know that there are a lot of crimes that occur due to illegal gun users. Anything else??

166. ## world history

What agreement was signed in 1992 between the United States, Mexico, and Canada? I say North American Free Trade Agreement

167. ## physics

A car stops for a red ligth. The light turns green and the car moves for 3 seconds at a steadily increasing speed. During this time, it travels 20 meters. The car then travels at a constant speed for another 3 seconds for a distance of 30 meters. Finally,

168. ## Physics

In 35s, Samsonite lifts his 8kg case from the floor to .8m above the ground (in his arms), carries it 24m across the room ( at the same height), and puts it on a conveyor belt 1.8m above the floor. At this point, the machine raises the bag 13 more meters

169. ## Physics

President Obama has set up a slide for his young children so they( and he) can slide into the pool behind the White House. The White House staff puts the bottom of the slide ( Which is flat for 2m) at the rim of the window sill which is 10m above the

170. ## world history

North Korea's capitalist economy has surged over the last decade due to increasing exports. I say false

171. ## math

If possible, completely factor the expression. (If the polynomial is not factorable using integers, enter PRIME.) x^2-x-20

172. ## chemistry

how much ice would i have to eat to l lose 10% of my body weight?

173. ## math

what is the range for the data 13,20,31,46,59,68

174. ## math

Simplify the expressiom (x-3)(2x-5)-(x+1)(x-6)

175. ## math

The product of two consecutive positive even numbers is 1368. What are the numbers? (Enter solutions from smallest to largest.)

176. ## Algebra

If a nuclear power plant can buy 86% enriched fuel for \$21000/lb and can buy cheaper less enriched uranium that is 80% pure and for \$14000/lb still using as a mixer the 57% pure uranium at \$5000/lb which fuel is going to be more cost effective for the

177. ## physics

Investigate the effect of the mass of an object on its motion and the relationship between an object’s mass and weight

178. ## math problem

A and B are travbeling in the same direction A is 40 miles B is 60 miles if a passes @ 12:20am and B passes @ 12:35am what time will B catch up to A?

179. ## physics

In reaching her destination, a backpacker walks with an average velocity of 1.20 m/s, due west. This average velocity results, because she hikes for 5.94 km with an average velocity of 3.28 m/s due west, turns around, and hikes with an average velocity of

180. ## math

Suppose you have a rational function that its denominator is (X-c) and numerator can be any function. Suppose you need to find the limit of this rational function given as x goes to value c. Can you always say that for this problem the limit does not

181. ## history

What are three myths about the New World and the Indians (Virgin land, inferior, Noble savage)

182. ## world history

What has happened to the leadership of Cuba since Fidel Castro stepped down due to illness? I say his brother, Raul, has taken Fidel's place.

183. ## Physics

Two flat metal plates of area 2.8 m2 are placed parallel to each other and both are then charged, one with +10 µC and the other with -10 µC. Determine the electric field in the air gap anywhere far from the edges.

184. ## Chemistry

An insulated beaker contains 250g of water at 25 degrees celsius. Exactly 41.6g of a metal at 100 degrees celsius was dropped in the beaker. The final temperature of the water was 26.4 degrees celsius. Assuming that no heat is lost in any other way,

185. ## world history

Vietnam had been a colony controlled by what nation prior to World War II? I say France

186. ## English

Thank you writeacher. I hope that one of your science experts on Jiskha can help me with finding the vocabulary. Here are some sentences on Chapter I of Orwell's 1984 I need you to check. 1 )The telescreen is described as an oval metal object fully

187. ## geography penn foster 007689RR

The steppes of southern Russia, the African veldt, and the pampas of Argentina are good examples of _______ biomes?

188. ## world history

In which country did Eva Perón work with her husband, President Juan Perón, to improve the lives of the poor and working class? I say Argentina

189. ## Physics

A runner runs and jumps off a cliff into the water below. If the runner takes up running a 9.37 m/s and lands in the water 2.0 m away from the cliff's edge: How tall is the cliff?

190. ## language arts

what does refrain mean when dealing with language arts/speeches?

191. ## MATH

The regular price is \$20. The sale price is \$20. What is the discount rate?

192. ## chemistry

What is the pH of a 2.8 M solution of HClO4?

193. ## Chemistry

How would you make 100mL of tartrate buffer, pH 3.5, from 0.100 M tartaric acid, 1M NaOH and deionized and distilled H2O? You need to consider the ionization of two the two acidic groups separately.

194. ## world history

Which of the following nations possess nuclear weapons? I say North Korea

195. ## visual literacy in business

in all but what way does lightning shape our perspective

196. ## math

Determine whether the point (1, 4) is a solution of the system 6x + 9y = 42 5x + 0y = 5 by substituting the point into each equation

197. ## Chemistry

1)Which thermochemical equation and data does not agree with the other two written? a) 2NO (g)+ O2 (g) ->2 NO2 (g) deltaH=-169.8 b) NO (g) + 1/2 O2 (g) -> NO2 (g) delta H = -56.6 c) 4 NO2 (g) -> 4 NO (g) + 2 O2 (g) delta H = +226.4 d)all three equations

198. ## science fair

Writeacher, its me again i just wanted to know if the experiment of the math test and music is enough for the multitasking project or should i include another experiment to prove the hypothesis. thank you soo much.

200. ## Physics

Over a time interval of 2.15 years, the velocity of a planet orbiting a distant star reverses direction, changing from +18.9 km/s to -17.3 km/s. Find (a) the total change in the planet's velocity (in m/s) and (b) its average acceleration (in m/s2) during

201. ## winter springs high

how do i solve 2x+7y=-20 and y=3x+7

202. ## Physics

Under the spreading chestnut tree the village blacksmith dunks a red-hot horseshoe into a large bucket of 22*C water. How much heat was lost by the horseshoe in vaporizing .00100 kg. of water?

203. ## Chemistry

So I do know how to work out letter a) but I'm still very confused with parts b and c. Appreciate the help! 2FeN(s) + 3H2(g) --> 2Fe(s) + 2NH3(g) Suppose that the reaction is carried out at 300C and 3.00 atm. 1.00 grams of iron (III) nitride reacts. a)What

204. ## History

What is gun control exactly?

205. ## speech

what does hook mean in a speech? what is used to grab the audiences attention? persuasion or hook?

206. ## Physics

A 57-kg lead ball is dropped from the leaning tower of Pisa. The tower is 56 m high. (b) What is the speed of the ball after it has traveled 2.5 m downward?

207. ## physics

HELP HELP HELP Two tiny objects with equal charges of 83.0 µC are placed at two corners of a square with sides of 0.320 m, as shown. How far above and to the left of the corner of the square labeled A would you place a third small object with the same

208. ## womens voting rights

when did the republican party endorse women's right to vote

209. ## world history

In which country were apartheid laws created that prohibited interracial marriage and otherwise segregated the races? I say South Africa

210. ## world history

During the 1990s, the United States became involved in a military dispute involving which nations? I say Iraq and Kuwait

211. ## geometry

Given the hypotenuse of a right triangle is 600, and the length of all three sides is 1400, what are the lengths of the legs?

212. ## 7th grade science ~ FOR MS. SUE

What would life be without organisms?

213. ## world history

Which of the following is NOT true about Nelson Mandela? I say B. He led massive peaceful protests against apartheid.

214. ## myths

what are some modern day myths?

215. ## world history

Select the nation that was created in 1947 in the Middle East to provide a homeland for Jewish people. I say Israel

216. ## Algebra

You are making a scale drawing of a sailboat using the scale 1 inch: 3 feet. The length of nthe sailboat at its longest point is 36 feet and the height is 54 feet.What should the lenght and height of the sailboat be in your drawing?

217. ## math

the cost of building lawn xmetre long varies partly as x and partly as xsquare.The lawn cost #180 if it 30metre long and #280 if it 40metre.How long is a lawn if it cost #4000 to build.

218. ## world history

After World War II, Africa's economy was based on agriculture. I say false

219. ## social studies

What did the king of England do that made the colonist upset?

220. ## eco/372

is the effect of trade on the economic growth is it an example of macroeconomic

221. ## economics

label a point f inside the curve. why is this an inefficient point? label a point g outside the curve. why is this point unattainable? why are pointS A THROUGH E ALL EDDICIENT POINTS?

222. ## chemistry

i have 2 questions stoichiometry loss of CO2 1. record the amount of CO2 produced vs the amount of Na2CO3. I did 7 beakers with 20ml of 3M H2SO4 and add varying amounts of Na2CO3 to each. 2. discuss your results in terms of moles. is there a linear

223. ## physics

A person takes a trip, driving with a constant speed of 93.5 km/h except for a 22.0 min rest stop. If the person's average speed is 68.0 km/h, how much time is spent on the trip and how far does the person travel? h km

224. ## economics

label a point f inside the curve. why is this an inefficient point? label a point g outside the curve. why is this point unattainable? why are pointS A THROUGH E ALL EFFICIENT POINTS?

225. ## world history

What event occurred in Tiananmen Square in 1989? I say Pro-democracy protesters were killed by government troops.

find the limit: lim of f(x) as x approaches 1 if f(x) = x^2 + 4, x is not equal to one and 2, x = 1. What is the answer and why?

227. ## physics

Assume a canister in a straight tube moves with a constant acceleration of -3 m/s2 and has a velocity of 13.5 m/s at t = 0.00 s. (a) What is its velocity at t = 1.00 s? v = m/s (b) What is its velocity at t = 2.00 s? v = m/s (c) What is its velocity at t =

228. ## physics

A mass of 3.4kg sliding along a frictionless floor at 1.5 m/s strikes and compresses a spring of constant k=295 N/m. The spring stops the mass. How far does the mass travel while being slowed by the spring? How long does the mass take to stop?

229. ## world history

What Muslim country was created when India was separated due to religious conflicts? I say Pakistan

230. ## Chemistry

A cup of teat containing 400g of liquid at 20 degrees celsius was heated. If 58.5 kj of heat was absorbed by the tea, what would the final temperature be? Assume that the specific heat of the tea is the same as that of water (4.18). I am not sure how to

231. ## physics

A ball is thrown vertically upward with a speed of +10.0 m/s. (a) How high does it rise? m (b) How long does it take to reach its highest point? s (c) How long does the ball take to hit the ground after it reaches its highest point? s (d) What is its

232. ## physics

It is desired to move a small, 50 kg cat in outer space by strapping a lamp, which emits 100 W of blue light to it. If the cat is free in space, and the wavelength of blue light is 470 nm, what would be the acceleration of the cat? (HINT: Consider how many

233. ## writing

explain the purpose audience tune and content impact academic writing

234. ## world history

In 1962, President John F. Kennedy was faced with a decision to avoid nuclear war. What occurred to place the United States in that position? I say The Soviets placed missiles in Cuba.

Using the FIFO method of inventory pricing, what is the dollar value ending inventory if there were 300 units on hand December 31? Auto Parts annual inventory of Windshield Wipers: January 1, Beginning inventory 300 units@11.00 March 15 Purchase 15o units

236. ## Trigonometry

What are these things called: -cos x = cos -x What are the rules to these trig rules? Thanks

237. ## Chemistry

Name two organic compounds that cannot be extracted effectively from an aqueous solution by means of an immiscible organic solvent such as diethyl ether or cyclohexane

238. ## physics

A small mailbag is released from a helicopter that is descending steadily at 3.00 m/s. (a) After 2.00 s, what is the speed of the mailbag? v = m/s (b) How far is it below the helicopter? d = m (c) What are your answers to parts (a) and (b) if the

239. ## Math Problem

a rectangle fixed at 30 cm what will make the permiter greater than 78cm

240. ## MATH

Jada is trying to determine the number of t-shirts that were in inventory before she started her shift. During her shift, she sold thirteen t-shirts, which left twenty-two t-shirts in inventory. -Define a variable. -Write an equation Jada can use to

241. ## math

perimeter of basketball court is 108 meters and the length is 6 meters longer than twice the width. what are the lenght and widht

242. ## language arts/ social studies

my friend and i have been trying to figure out this question but we cant come to an agreement. i think its "a" and she thinks it's "b." The question has to deal with the Gettysburg Address. Lincoln's speech is noted because of its a. poetic qualities b.

243. ## chemistry

How much aluminum nitrate can be found when 12 g of aluminum react with lead(II) nitrate? Answer in units of mol

244. ## com172

Review the following passage and paraphrase it in the following box. Use the reference to create an appropriate APA-formatted in-text citation. Additionally, include one direct quotation. One of the most valuable skills a student can develop is focus.

245. ## biology

What effects does an increase or decrease in the pH of the cell cytoplasm have on proteins and their ability to function?

246. ## HISTORY

What did George Kennan mean by “containment”? Why did he think it would be a successful strategy?

247. ## math

a photograph is 5.5 in. long and 3.2 in. wide. it must be enlarged so that both dimensions are 1.8 times greater. how long will the photograph be then?

248. ## physics

Three point charges are fixed in place in a right triangle. What is the electric force on the q = -0.63 µC charge due to the other two charges? (Let Q1 = +0.83 µC and Q2 = +0.9 µC.) what is the magnitude N, and direction in degrees ° above the positive

249. ## Social studies

To write a paragraph explaining Lincoln's vision of the united states. Make at least 2 references to specific details of the Gettysburg address.

250. ## calculus

how to find the continuity of this function? f(x)=1-3x^2

251. ## English

Thank you very much. Here is the second part I'd like you to check. 1) From his place Winston can read the three slogans of the Party: War is peace, freedom is slavery, ignorance is strength. 2) Each of these is of course either contradictory or the

253. ## social studies

Name some of the people who helped win the Revolution and list their contributions.

254. ## chemistry

Mass of an unknown gas of 50 mL volume at 25 degrees C. and 740 mm of Hg pressure was 0.056 g. The molecular mass of this gas is...

255. ## English

I am doing my application form for a university, it asks for my job information Job Title: I work at Mcdonalds part-time and work in the kitchen, what will my job title be? Kitchen staff? :S

256. ## math

Solve the equation. (Enter solutions from smallest to largest. If there is no solution, enter NONE in the answer boxes.) 5x2 = 9x + 2

257. ## Statistics-Probability

Data collected on volcanic eruptions give a mean time between eruptions of 29 months. Assume these eruptions occur as a Poisson process in time, find the: (a) Expected number of eruptions during the five-year period beginning from the time you have read

258. ## physics

Two particles each with charge +2.68 µC are located on the x axis. One is at x = 1.00 m, and the other is at x = −1.00 m. (a) Determine the electric potential on the y axis at y = 0.660 m. (b) Calculate the change in electric potential energy of the

259. ## Physics

If the block slides down the incline at a constant speed, what is the force of friction between the block and the plane?

260. ## Physics

is work directly related to power?

261. ## English

I urgently need to write a short email to a scholar specialized in Comenius projects. After presenting myself and the school I'd like to include this: 1) As you are a scholar with an in-depth knowledge of Clil within a Comenius project, I would like to

262. ## math

f(x)=x^3+6x^2+9x find: x intercepts vertical asymptotes horizontal/slant asymptotes derivative second derivative increasing interval decreasing interval concave up interval concave down interval

263. ## math

f(x)=x/(x^2+x-2) find: x intercepts vertical asymptotes horizontal/slant asymptotes derivative second derivative increasing interval decreasing interval concave up interval concave down interval

264. ## math

(x^3+7x+12)/(x-4) find: x intercepts vertical asymptotes horizontal/slant asymptotes derivative second derivative increasing interval decreasing interval concave up interval concave down interval

265. ## Literacy

6.The idea that countries should produce and sell goods that they produce most effectively and efficiently, and buy goods that other countries produce most effectively and efficiently, is known as A. absolute advantage theory. C. efficiency balanced trade.

266. ## physical science

a tennis player hits a ball of mass 200 g,which is moving towards him with a velocity of 30m/s west. calculate the impulse of the ball. b.the force the racket will exact on the ball if the time of contact is 0.2 seconds

267. ## Chemistry

I'm doing online chemistry homework, and the site keeps telling me I have the wrong answer, but I'm not sure what I'm doing wrong. please help? What is the pH of a 0.089M solution of phosphorous acid (H2PHO3) in water? The value of Ka1 for H2PHO3 is 1.600

268. ## physics

a mass being held by a string moves with speed v on a circular path of radius r, and has a period of revolution T. if it was desired to travel one revolution in twice as much time as before, what would be the radius of the path? what if the time was

269. ## Literacy

. Which statement best characterizes Adam Smith’s concept of the “invisible hand”? A. Those who don’t work shouldn’t eat. B. The quest for personal gain works for the common good. C. When governments fail to regulate, greed conquers all. D.

270. ## math problem

collect like term 10p+6q-5p-8q =

271. ## Math

Ella reports that the height of a tree in her school yard is 3.8m. If ella measured the tree to the nearest hundredth of a metre, what is the least height she might report?

272. ## math

let fbe a function that is even and continuous on the closed interval [0,3]. the function f and itsderivatives have the properties indicated in the table below. sketch the graph. x 0 0

273. ## Literacy

Calendula, Inc. sells its herbal teas at a lower price in foreign countries than those charged to consumers in Calendula’s home nation. In global trade, this is known as A. freeloading. C. brand infringement. B. depreciation. D. dumping my answer is A

274. ## psychology

View the results for a hypothetical psychology test psychology test. Then, create a report with the following: The mean score for each question. The mean score for the entire test. A graph that represents the scores for each question.

275. ## science fair

maybe making them pat thier head and rub their stomach or hear a lecture and draw while youre hearing it and then answer questions on it

276. ## english

paraphrase the following lines from dickinson i found the phrase to every thought i ever had, but one; and that defies me,...

277. ## geometry

Find the area of a circle circumscribed about an equilateral triangle whose side is 18 inches long.

278. ## math

a jar of jelly beans contains 33 red, 52 white, 70 yellow ad 85 orange. To the nearest whole percent, what percent of the total jelly beans are orange?

279. ## Physics

A 2.7 kg ball strikes a wall with a velocity of 7.6 m/s to the left. The ball bounces oﬀ with a velocity of 5.2 m/s to the right. If the ball is in contact with the wall for 0.23 s, what is the constant force exerted on the ball by the wall? Answer in

280. ## computer science

How can i create my computer science project which is to draw a game and make a file on your game which you can create?

281. ## physics

A 16kg stone falls 40m. Find the stone's kinetic energy just before it strikes the ground.

282. ## biology

What effect does an increase or decrease in the pH of the cell cytoplasm have on proteins and their ability to function?

283. ## physics

A 0.579 kg basketball is dropped out of a window that is 6.22 m above the ground. The ball is caught by a person whose hands are 1.31 m above the ground. How much work is done on the ball by its weight?

284. ## bio

I did a pig dissection , but i am not to sure about these questions, any help would be great ! 1. The lungs of a fetal pig serve as a protection for what important body organ 2. The respiratory system is located on the ventral side of the pigs body, what 3

how will you multiply y = ae^3x + be^-2x with dy/dx = 3ae^3x - 2be^-2x

286. ## US HItstory Since 1876

I am needing several opions on this subject. Your opinion would be great!! Do you think the reconstruction was a success or failure?

287. ## Physics

1. The problem statement, all variables and given/known data A point charge is placed at each corner of a square with side length a. The charges all have the same magnitude q. Two of the charges are positive and two are negative, as shown in the following

288. ## physics

A model rocket is launched straight upward with an initial speed of 30.0 m/s. It accelerates with a constant upward acceleration of 2.50 m/s2 until its engines stop at an altitude of 170 m. (a) What is the maximum height reached by the rocket? m (b) How

289. ## bio

The fetal pig does not have functional lungs, since the lungs are not being used is there any need to transport blood tot he lungs before the fetus is born

290. ## math

A circle with the equation (x + 4)2 + (y - 3)2 = 9 is reflected over the line y = -1. What is the equation of the image?

291. ## Physics

A 42.5 kg student runs down the sidewalk and jumps with a horizontal speed of 4.16 m/s onto a stationary skateboard. The student and skateboard move down the sidewalk with a speed of 3.97 m/s. a) Find the mass of the skateboard.

292. ## science

Shown below are the data giving the length of life of lights in an underground tunnel. 9.0 months 7.0 months 8.2 months 8.3 months 7.8 months 8.1 months 7.5 months 7.6 months 9.1 months 7.4 months I calculated the standard deviation to be about 0.679.

293. ## bio

for a fetal pig why is it difficult to find the urinary bladder by describing the specific location ? what structures in the umbilical cord remove waste materials from a fetal mammal?

294. ## chemistry

What is the molarity of a solution that contains 31.0 HCl in 5.00kg water? (molar mass of HCl=36.46 g/mol)

295. ## bio

name three major blood vessels that branch off the aortic arch and the body part the blood is carried to name two major artries that branch off the dorsal aorta and the organ they carry blood to

296. ## physics

a 43.7 kg student runs down the sidewalk and jumps with a horizontal speed of 4.48 m/s onto a stationary skateboard. the student and the skateboard move down the sidewalk with a speed of 4.25m/s. find the mass of the skateboard in units of kg. how fast

297. ## accounting

Write a 3-4 page paper that summarizes your findings from the four (4) scenarios as well as how using Microsoft Excel helped you with this process, using the following outline: 2. Summarize the various accounting systems that each firm provides. Be sure to

298. ## physics

a 43.7 kg student runs down the sidewalk and jumps with a horizontal speed of 4.48 m/s onto a stationary skateboard. the student and the skateboard move down the sidewalk with a speed of 4.25m/s. find the mass of the skateboard in units of kg. how fast

299. ## physics

A 3.12 kg bowling ball traveling at 15.3 m/s to the right collides with a 2.15 kg bocce ball traveling at 7.52 m/s to the right. The final velocity of the bowling ball is 2.33 m/s to the left. Determine the final velocity of the bocce ball. What is the

300. ## Finance

In November and December 2011, Gee Company, a newly organized magazine publisher, received \$36,000 for 1,000 three-year subscriptions as \$12 per year, starting with the January 2012 issue of the magazine. How much should Gee report in its 2011 income

301. ## Chemistry Lab

we reacted acetic acid with butanol and formed butyl acetate which is supposed to smell like banana but it smelled like sharpie/nail polish remover why might this be