Questions Asked onOctober 3, 2014

1. chemistry

Gaseous methane CH4 will react with gaseous oxygen O2 to produce gaseous carbon dioxide CO2 and gaseous water H2O . Suppose 0.481 g of methane is mixed with 2.9 g of oxygen. Calculate the maximum mass of carbon dioxide that could be produced by the

2. Math

Fun Center rents popcorn machines for \$20 per hour. In addition to the hourly charge, there is a rental fee of \$32. Is the number of hours you rent the popcorn machine proportional to the total cost?

3. chemistry

a.) Write the balanced complete combustion reaction for ethane (C2H6), producing CO2 and water vapour. Make sure to include phases. Also, make sure that the stoichiometric coefficients are whole numbers and are not fractions. b.) What is the enthalpy of

4. Chemistry

If we take 2.2 grams of CO2, 6.02 X 1021 atomes of nitrogen and 0.03 gram atoms of sulphar , then the molar ratio of C, N, and O is . answer is 5:1 :3 how to solve it help please , thanks

asked by Shahab Mirza
5. Chemistry

Equal weights of methane and hydrogen are mixed in an empty container at 25 C. the fraction of total pressure exerted by the hydrogen is? answer is 1/9 i want to know that how to find out this answer thanks?

asked by Shahab Mirza
6. Chemistry

Nitrogen dioxide decomposes on heating according to the following equation 2NO2 (g) ↔ 2NO (g) + O2 (g) When 4 mole of nitrogen dioxide were put into a 1dm3 container and heated to a constant temperature, the equilibrium mixture contained 0.8 mole of

asked by Shahab Mirza
7. Pre-Calc/Trig...

Let y = 4t + 2 be a linear function representing the distance from home for an ant t minutes after starting out from a location near its home. What does the number 4 represent in this function? The ant is 4 feet from its home after t minutes. The ant

8. model multiplication

jillian's garden, there are 3 rows of carrots, 2 rows of beans and 1 row of peas. there are 8 plants in each row. how many plants are there in all?

9. CALC AB

if p(x)=(x-1)(x+k) and if the line tangent to the graph of p at the point (4,p(4)) is parallel to the line 5x-y+6=0, then k=? a. -1 b. -2 c. 1 d. 0 e. 2

10. AP Calc. AB

At how many points on the curve y=4x^5-3x^4+15x^2+6 will the line tangent to the curve pass through the origin?

11. Social Studies

1. The leaders of the Virginia Company recruited more settlers and reorganized the colony. They allowed the new settlers to own land. Those settlers began to grow tobacco, a crop they learned about from the Indians. By 1612, Virginians were shipping

12. MATH - 2ND GRADE

Sonya has 140 beads. How many bags of 10 beads does she need so that she will have 200 beads in all?

13. chemistry

What is the maximum mass of TiCl4 that can be obtained from 79.0 g TiO2, 37.9 g Cl2 and excess carbon? Please show all your steps. 3 TiO2(s) + 6 Cl2 + 4 C(s) --> 3 TiCl4(g) + 2 CO2(g) + 2 CO(g) Molar Masses:TiO2-79.88, Cl2-70.90, TiCl4-189.68

14. calc

Give the starting value a, the growth rate r, and the continuous growth rate k. Round the answer for r to two decimal places Q = 0.414(e^0.885)^t a = ? r = ?% k = ?% I found a to be 0.414 but when finding the percentage for r and k I got stuck.

15. CALCULOUS

A bank account is growing by 4.3 % per year. Find the doubling time. Round your answer to the nearest integer. Can someone explain how to solve this step by step. I have been stuck on this for quite a while

16. History, Urgent

Settlements in America were not sponsored by: London Company Raleigh De Soto Dutch West India Company Its for a friend, 8th grade history

17. social studies

1.) contrast the up country and the low country. identifiy three diffrences between the two regions (6 points) 2.) describe the primary economic activity for each of the tree colonial regions: The new england colonies, the middle colonies , and the

18. history

1.) describe the primary economic activity for each of the tree colonial regions: The new england colonies, the middle colonies , and the southern colonies. explain how the gephraphary of each region helped determine its economy (6 points) @mrs.sue please

19. math

8h x \$9/h i really need help. i do not understand. Please help, Thank You in advance My work 8/h x 9/h= 72/h i don't know what to do next

asked by john Dosley
20. geometry

The melting point of mercury is -36 degrees fahrenheit and its boiling point is 672 degrees fahrenheit what is the difference between the boiling points and the melting points

21. chemistry

Use activity coefficients to find the concentration of hydrogen ions in a solution of 90.0 mM butanoic acid and 0.05 M NaCl. The ionization constant of butanoic acid is Ka = 1.52 × 10-5. Take the size of C3H7COO– to be 500 pm. How do I calculate the

22. Physics

The drawing below shows a person who, starting from rest at the top of a cliff, swings down at the end of a rope, releases it, and falls into the water below. There are two paths by which the person can enter the water. Suppose he enters the water at a

23. P.E

It is important to choose simple carbohydrates for breakfast to get you started for your day. True*** False True? Thanks

24. Math

The rotating light on a lighthouse is 400 feet from a cliff. It completes one rotation every 10 seconds. The equation representing the distance, d, in feet that the center of the circle of light is from the lighthouse is d(t) = 400sec (πt/5). What is the

25. Physics

Suppose in the figure blow that +1.00 103 J of work is done by the force F with arrow (magnitude = 30.0 N) in moving the suitcase a distance of 51.0 m. At what angle θ, counterclockwise from the x-axis, is the force oriented with respect to the ground?

26. Physics

The drawing below shows a person who, starting from rest at the top of a cliff, swings down at the end of a rope, releases it, and falls into the water below. There are two paths by which the person can enter the water. Suppose he enters the water at a

27. math

Use Gauss's approach to find the following sums ( do not use formulas). A. 1+2+3+4+...1001 B. 1+3+5+7...+99.

28. Statistic

Examining the location of accidents on a level, 3-mile bike path shows that they occur uniformly along the length of the path. This figure Uniform density curve. displays the density curve that describes the distribution of accidents.

29. Calculous Pre

A population grows from 11,000 to 15,000 in three years. Enter your answers to three decimal places. Assuming the growth is exponential, find the growth rate and continuous growth rate Growth rate ______ %? Continuous rate _________ %?

30. Science

which term best describes the role carbon plays in the structure of compounds present in living things? A- a somewhat important role B- a fundamental role C- a minimal role I think it B.

31. Chemistry

What is the maximum mass of TiCl4 that can be obtained from 79.0 g TiO2, 37.9 g Cl2 and excess carbon? Please show all your steps. 3 TiO2(s) + 6 Cl2 + 4 C(s) --> 3 TiCl4(g) + 2 CO2(g) + 2 CO(g) Molar Masses:TiO2-79.88, Cl2-70.90, TiCl4-189.68

32. math

The number 57,733 contains two sets of digits in such digit is ten times as great as the other.What are the values of the digits in each set.

33. Physics

A 55-kg soccer player jumps vertically upwards and heads the 0.45-kg ball as it is descending vertically with a speed of 29 m/s. If the ball is in contact with the player's head for 16 ms, what is the average acceleration of the ball? (Note that the force

34. physics

An arrow is aimed horizontally, directly at a target 20.6 meters away. when the arrow is released, it lands 0.095 meters below the target point. a) How long was the arrow in the air? b) How fast was the arrow moving when it left the bow?

35. Physics

A block of mass 50 kg is pulled on a frictionless floor by F=210N directed to 30angle horizontally, If the block moves 3m, find work done? a. 115 √2J b. 315 √3J Answer is B 315 √3J , my question is how to solve it in this way i mean, i solved it like

asked by Shahab Mirza
36. 2ND GRADE MATH

A store sells 2 boxes of 100 pencils and some single pencils. Choose all the numbers that show how many pencils the store could sell: 1. 219, 2. 206, 3. 120, 4. 182

37. Math

Mrs. Govin is making cakes for the school bake sale. She needs 2 cups of sugar for every cake she makes. Is the number of cakes Mrs. Govin makes proportional to to the number of cups of sugar?

38. History, Urgent

Why did the Jamestown settlement almost fail? Settlers hunted for gold rather than plant crops. The settlement was led by Henry Hudson. Fur trading replaced farming as the main industry.

39. Physics

A person pushes a 16.0-kg shopping cart at a constant velocity for a distance of 18.0 m. She pushes in a direction 20.0° below the horizontal. A 40.0-N frictional force opposes the motion of the cart. (a) What is the magnitude of the force that the

40. Math (Confused, no idea where to begin)

The voltage V across a charged capacitor is given by V(t) = 2e^-0.16t volts, where t is in seconds (A) what is the voltage V(5) after 5 seconds? Find the time t when the voltage will be 1 volt Enter your answers to two decimal places V(5) approximately

41. Mathematics C 8th grade

Two cars traveled equal distances in different amounts of time. Car A traveled the distance in 2.4 h, and Car B traveled the distance in 4 h. Car A traveled 22 mph faster than Car B. How fast did Car A travel? _______MPH

42. Physics

A monkey throws a banana horizontally from the top of a tree. The banana hits the ground 3.03 seconds later and lands d = 30.9 meters from the base of the tree. 1. What was the resultant velocity of the banana as it hit the ground? magnitude = ? m/sec. 2.

asked by Mack K
43. pre-calc

a semicircle of radius r=3x is inscribed in a rectangle so that the diameter of the semicircle is the length of the rectangle 1. express the area A if the rectangke as a function 2 express the perimeter P of the rectamgle as a function of x

44. chemistry 101

What alcohol(s) could be used to produce each of the following compounds? Enter the IUPAC names of the alcohol(s). If there are more than one alcohol, enter them separated with commas. 1.CH3-CH2-O-CH2-CH3 2.CH3-CH2-C=CH-CH3 ..........| ..........CH3.

45. math

if 2 chickens can lay 8 eggs in 3 days, how many eggs can 5 chickens lay in 6 days?

46. math

Michael's father broughthim a 16-foot board to cut into 11 equal sizes lengths for his shelves The saw blade that Michael will use to cut the board will change the length of the board by -0.125 inches for each cut. How will this affect the total length of

47. Math

8. The gross weight of a package and its contents is 11 pounds 5 ounces. If the packaging weighs 1 pound 15 ounces, what is the net weight of the contents? A. 12 lb. 20 oz. B. 10 lb. 5 oz. C. 9 lb. 6 oz. D. 10 lb. 6 oz. D or B?

48. Science

why is burning magnesium an irreversible reaction?

49. Math

16. If a sports shop sold 1,500 dozen golf balls last week, how many individual golf balls did the shop sell? A. 180 B. 125 C. 12,500 D. 18,000 D? 20. How many yards are in 7 miles? A. 12,320 B. 700 C. 36,960 D. 252 A?

50. algebra 1

princess leia is a very good math student. Her average math grade was a 95 on her 15 tests. If Darth Mangham decides to drop her lowest grade, write an expression to determine her new test average.

51. Chemistry

Potentiometric Acid-Base Titration: The tasks to be performed in Experiment #6 include: A. Preparation of a 0.05 M solution of sodium hydroxide (titrant solution). B. Standardization of the titrant solution. C. Calibration of the pH-meter. D. Determination

52. Chemistry

A buffer contains 0.50 mol CH3CO2H and 0.50 mol CH3CO2- diluted with water to 1.0 L. How many moles of NaOH are required to increase the pH of the buffer to 5.00? (pKa for CH3CO2H = 4.74)

53. English

What does the story "The Gift of the Magi" say about material possessions?

54. Int. science

Jose times how long sugar takes to dissolve in warm water. He conducts four trials of his experiment. What should he conclude from his data? Time: trial 1 30 seconds trial 2 32 seconds trial 3 10 seconds trial 4 29 seconds Sugar does not dissolve in water.

55. physics

A basketball player makes a jump shot. The 0.600-kg ball is released at a height of 2.13 m above the floor with a speed of 7.55 m/s. The ball goes through the net 3.10 m above the floor at a speed of 3.95 m/s. What is the work done on the ball by air

56. Physics

A 7300-kg satellite has an elliptical orbit, as in the figure. The point on the orbit that is farthest from the earth is called the apogee and is at the far right side of the drawing. The point on the orbit that is closest to the earth is called the

57. Physics

Two satellites, A and B, are in different circular orbits about the earth. The orbital speed of satellite A is eighty-two times that of satellite B. Find the ratio (TA/TB) of the periods of the satellites.

58. Physics

A golf club strikes a 0.041-kg golf ball in order to launch it from the tee. For simplicity, assume that the average net force applied to the ball acts parallel to the ball's motion, has a magnitude of 6400 N, and is in contact with the ball for a distance

59. Pre Calc

Use the doubling time to find the continuous percent growth rate and give a formula for the function. Round your answer to two decimal places. I found the doubling time to be 24 days and the continuous percent growth rate to be 2.89% I need to do the

60. math algebra

Decide whether the equation has one solution, no solution or infinitely amount of solutions. 1: 2(x - 3) = 2x one none infinitely 2: 3(y - 3) = 2y - 9 +y one none infinitely 3: 10x - 2 - 6x = 3x - 2 + x one none infinitely 4(x + 3) + 2x= x - 8 one none

61. Math

A 21-foot ladder is leaning against a building. The base of the ladder is 7 feet from the base of the building. To the nearest degree, what is the measure of the angle that the ladder makes with the ground? (Hint: Sketch the problem before solving.)

62. Physics

A car is driving on a level highway. It is acted upon by the following forces: a downward gravitational force of 12 kN, an upward contact force due to the road of 12 kN, another contact force due to the road of 7 kN directed West, and a drag force due to

63. Physics

Two satellites, A and B, are in different circular orbits about the earth. The orbital speed of satellite A is eighty-two times that of satellite B. Find the ratio (TA/TB) of the periods of the satellites.

64. physics

A stunt car driver drives off an h = 6.7 m-high cliff into a lake with a horizontal speed of 14 m/s. The car needs to clear an 8.0 m-long ledge that is 5.0 m below the edge of the cliff. The car successfully misses the ledge on the way down. With what

65. Math

A roofer must set up a 40-foot ladder against the side of a house. He sets the ladder so that the distance from the base of the ladder to the wall is 1/5 of the length of the ladder. To the nearest degree, what acute angle does the ladder make with the

66. math

Sue has a total of \$4000 to invest in two accounts. one account earns 2% simple interest and the other earns 5% simple interest. How much should be invested in both accounts to earn exactly \$155 at the end of the year?

67. chemistry

state four differences between acid-base indicators and universal indicators

68. Physics

A golf ball is shot from a tee, elevated 20m above the green, with an initial speed of 27m/s at an angle of 50° above horizontal. a) What will be the speed of the golf ball before it hits the green, 20m below it started? b) How much time will it take for

69. math 156

A company will need \$35000 in 6 years for a new addition. To meet this goal the company deposits money in an account today that pays 4% annual interest compounded quarterly. Find the amount that should be invested to total \$35000 in 6 years. The company

70. math

Suppose the length of time cats sleep each day is normally distributed with a mean of 15 hours and a standard deviation of 2 hours. Which groups describe 34% of the cat population? I just need help on how to do it.

71. Math

Rectangle ABCD has been subdivided into 4 regions. The areas of two of these regions are a^2 and 144. The combined area of the other two regions is 25a. What is the perimeter of the rectangle ABCD? Please help and show steps! I don't have a clue how to do

72. algebra

A plane takes 3 hours to travel 1500 miles with the wind. it can travel only 1380 miles against the wind in the same amount of time. Find the speed of the wind and the speed of the plane in still air.

73. math

Shannon invests \$3,000, at 8% interest, compounded quarterly for one year. Use Table 11-1 to calculate the effective interest rate for her investment. (Round the effective rate to the nearest hundredth percent.)

74. Math Calculous

Q = 16.8*10^-0.22t Give the starting value a, the growth rate r, and the continuous growth rate k. Exact answer for a, Round the answer for r and k to two decimal places a = 16.8 r = 10 k = -22% Can someone check my answer? I do not think the values for r

75. Calc

I need help finding the correct formula after finding the doubling time and continuous percentage. I got the doubling time of 24 days and the continuous percentage of 2.89%. Homework asking use the doubling time to find the continuous percent growth rate

76. physics

What is the acceleration of a car going from 3.0 x 101 km/hr to 1.20 x 102 km/hr in 3.0 x 101 sec?

77. Chemistry

Explain the advantages of a potentiometric titration over titrations that use colored indicators.

78. Pre-Calc

Convert Q = 2e^8t to form Q = ab^t Round all calculated values to three decimal places Q= my answer I got 2(2.980.9579)^t I don't think this is correct. I took 2e^8t and tried solving for just e^8 then tried to convert... It turned out messy

79. Physics

A 4.55 kg steel ball is dropped onto a copper plate from a height of 10.0 m. If the ball leaves a dent 2.80 mm deep in the plate, what is the average force exerted by the plate on the ball during the impact?

80. urgent physics ?

I have drawn my force body diagrams, but I need help making forming the equation for this problem. Any assistance is greatly appreciated! A 60 kg block slides along the top of a 100 kg block. The lighter block has an acceleration of 3.8 m/s2 when a

81. PHYSICS

A golf club strikes a 0.041-kg golf ball in order to launch it from the tee. For simplicity, assume that the average net force applied to the ball acts parallel to the ball's motion, has a magnitude of 6400 N, and is in contact with the ball for a distance

82. PHYSICS

Starting from rest, a 2.0 10-4-kg flea springs straight upward. While the flea is pushing off from the ground, the ground exerts an average upward force of 0.36 N on it. This force does +2.5 10-4 J of work on the flea. -How far does the flea move while

83. Physics

The width of the space charge region at a p-n junction is reduced by applying a voltage bias over the p-n junction. What is the correct statement on both the bias voltage and the p-n junction? The voltage is a forward bias and the diffusion of the majority

84. Physics

The current density of an ideal p-n junction under illumination can be described by: J(V)=Jph−J0(e^qV/kT−1) where Jph is the photocurrent density, J0 the saturation current density, q the elementary charge, V the voltage, k the Boltzmann's constant,

85. Physics

Let's assume that solar light reaches a silicon solar cell with an angle of incidence of θi=0o. For simplicity, let's consider the refractive index of silicon to be nSi=3.5. The refractive index of air is nair=1. What percentage of light would be lost due

86. physics

Could anyone help me set up this equation? I drew my force body diagram but wasn't sure how to include the downward force (im assuming i use either sine or cosine?) A force of 340 N pushes a 54 kg object. Find the acceleration of the box if the force makes

87. Pre-Calculous

Convert Q = 17(0.887)^1.2t to the form Q = ae^kt Round all calculated values to three decimal places Q = ? My answer was 17e^-0.099t, but I do not think that it is correct

88. Physics

A solar cell with dimensions 12cm x 12cm is illuminated at standard test conditions. The cell presents the following external parameters: Voc=0.8V,Isc=3A,Vmp=0.75V,Imp=2.5A Calculate the fill factor in percentage [%]: Calculate the efficiency (in %):

89. Math

2. If a thermometer indicates 40 degrees Celsius, what is the temperature in degrees Fahrenheit? A. 72°F B. 54°F C. 104°F D. 22°F C?

90. Math Questions

1.) 6√24x, for which value of x makes the expression equivalent to 18√24? a.) 3 b.) 9 c.) 12 d.) 18 My answer: C. 2.) 4√72x, for which value of x makes the expression equivalent to 24√72? a.) 6 b.) 7 c.) 36 d.) 72 My answer: A. 3.) 7√32x, for

91. Science

What best explains why carbon is present in so many kinds of molecules? A- It is abundant on earth B- It can form four covalent bonds C- It has valence electrons D- It can become ion I think it is B, however, I am unsure!

92. Math Growth Rate w/ inflation

In a country where inflation is a concern, prices have risen by 50 % over a 3-year period. (a) By what percent B do the prices rise each year? Find the time t it takes for prices to rise by 8% Enter your answers to two decimal places. b = ____ % t =

93. algebra 2

During last night’s basketball game, Lisa Schmidt made 30 points in field goals. A field goal is worth 2 or 3 points. If Lisa made 9 field goals worth 2 points each, how many did she make worth 3 points each? Let x represent the number of 2-point field

94. chemistry

what concentration of Br- results when 831 mL of 0.747 M HBr is mixed with 611 mL of 0.561 M FeBr2

95. Math

Kate is 5 years older than Lenny. Lenny is 2 years younger than Maria. Maria is twice as old as Norman. If Norman is 10 years old, how old is katie?

96. Marketing

I am writing a report for marketing and have to create a fictional business. My first business was a clothing store. I need an idea for another business. I was thinking maybe a candy store, or a water ice store. Are they considered retail ? Do you think

97. chemistry

The rock in a lead ore deposit contains 84% PbS by mass. How many kilograms of the rock must be processed to obtain 2.3 kg of Pb? WebAssign will check your answer for the correct number of significant figures. kg

asked by Tommy Turner
98. Chem

A mixture of 2.5 moles of H2O and 100 g of C are placed in a 50.0 L container and allowed to come to equilibrium in the following reaction: C(s) + H2O(g)  CO(g) + H2(g) The equilibrium concentration of hydrogen gas is found to be 0.040 M. What is the

99. Math

A boy spends 32% of his money and has \$120 left how much did he have at first

GE Aircraft Engines uses 1200 units of a certain spare part that costs \$2500 for each order with an annual holding cost of \$2400/unit. Calculate the total cost for order sizes of 25, 40, 60 and 100. Also compute the economic order quantity and the

101. algebra

If 182 lbs of force keeps a 1500 lb car from skidding on a curve of radius 500 ft at 30 mph, what force would keep the same car from skidding on a curve of radius 800 ft at 45 mph

102. Physics

What is the magnitude of the average force required to stop an 1400kg car in 9.0s if the car is traveling at 85km/h ?

103. GLBT Studies

What are some arguments that can be used against a religious racist who argues gay people should have no rights?

104. Math

For the function h(x) = 2cot(x/2) an expression for the value of all asymptotes is ________?

105. physics

Three forces act on a moving object. One force has a magnitude of 62.6 N and is directed due north. Another has a magnitude of 45.9 N and is directed due west. What must be (a) the magnitude and (b) the direction of the third force, such that the object

106. Math

1. Victor brought a brand new car for 750,000. IF the value of the car depreciates 20% per year, what will it be worth during the fourth year? 2. Given the terms a10 = 3/512 and a15 = 3/16384 of a geometric sequence, find the exact value of the first term

107. Physics

A 61.5-Ω resistor is connected in parallel with a 146.6-Ω resistor. This parallel group is connected in series with a 16.0-Ω resistor. The total combination is connected across a 13.6-V battery. Find (a) the current and (b) the power dissipated in the

108. (MCV4U) Vectors

The air velocity of helicopter Hal is 200km/h due west. Hal's ground velocity is 180km/h in the direction N80*W. Determine the wind velocity. Please help! I know i should be drawing a diagram but I am very confused with how to do this question! Thank you!

109. Pre Calc

Use the Rule of 70 to estimate how long it takes a dollar-sign 7000 investment to double if it grows at the annual rate 7 %. Compare with the actual doubling times. Round your answers to three decimal places. I found the estimated doubling time using Rule

110. Analytic Geometry CHECK MY ANSWER

A neighborhood swim club charges a one-time fee of \$25 to join and \$85 each month. If n is the number of months of membership and t is the total amount spent, then the variables are related by the equation t = 85n 25. Which variable is the independent

111. chemistry

Suppose you find chunk of what appears to be gold in the sand at the beach. devise a simple experiment to determine whether or no you're struck it rich. Please list all lab equipment required and list the specific steps you would take

112. physics

A car travels along a straight stretch of road. It proceeds for 15.9 mi at 51 mi/h, then 25.3 mi at 41 mi/h, and finally 34.3 mi at 38.6 mi/h. What is the car’s average velocity during the entire trip? Answer in units of mi/h

113. English

What winter sport do you like most? 1. I lke curling because it's fun to see players hit big stones. 2. I like bobsledding because it's thrilling to ride a bobsled. 3. I like speed skating because I like wild races. 4. I like ski jumping because I like

114. Pre-Calc/Trig...

Assume f(x) = -2x + 8 and g(x) = 3x. What is the value of (f + g)(-1)?

115. Intrest

A store keeper decided to give a 10% discount on all purchases during the christmas season. How much would a customer pay for a table that orginally cost \$24000?

116. english

What does the term RACE mean in trying to do language homework?

117. math

Suppose there is a 2 degree drop in the temp for every thousand feet that an airplane climbs into the sky if the temp on the ground, which is at sea level is 64 degrees What would be the temp

118. Pre-Calc/Trig...

If f(x)=1/(x+2), what is f(3+h)? A. 1/(3+h) B. 1/(h+5) C. 1/(x+2)(3+h) D. (3+h)(x+2)

119. Math

Pat and Kelly went hiking in the mountains. They started at 9,100 ft. They climbed 1,200 ft the first day, descended 900 ft the second day, and climbed 1,000 ft the third day. On the fourth day they descended 800 ft. What was the average altitude at which

120. Physics

A 36-kg girl is bouncing on a trampoline. During a certain interval after she leaves the surface of the trampoline, her kinetic energy decreases to 185 J from 460 J. How high does she rise during this interval? Neglect air resistance.

121. physics

when the students place the unknown cart on the scale the scale reads the mass of 1.20 kg a)calculate the percent difference b) state the reason for the difference . explain

122. Pre-Calc/Trig...

Which of the following is the equation of a line parallel to the line y = 3x + 2, passing through the point (10,1)? 3x + y = 29 3x - y = 29 -3x - y = 29 3x + y = 29

123. programing

1. Elements – sequence-series outputting Write a program that prints the following elements: 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, (hereto referred to as elements) etc., up till a user-entered value. The program should not print more than 10 numbers per

asked by tefo sello
124. English

1. Eleven Cities Tour finally takes place again! 2. Eleven Cities Tour finally is held again! 3. Eleven Cities Tour is finally held again! ---------------- Between #2 and #3, which one is grammatical?

125. Pre-Calc/Trig...

Am i correct? It is possible for a system of linear equations to have no solutions. True

126. Math

Can someone tell me if I have this right? Thanks! Question: P varies directly as Q can be written as P = kQ. True Or False. My answer: True

127. Math

A cylinder has a surface area of 250cm2 . The height is twice as big as the radius. What is the height of the cylinder?

128. pre-calculus

It has been discovered in a certain state that the relationship between the number of snow shovels demanded varies linearly with its price. When the price per item was \$ 38 ,2200 items were demanded; When the price was \$ 49 , 2125 items were demanded.

129. math

an average adult flea can jump 200 times the lenght of its own body. An adult flea is about 0.1 inch long. About how many feet can the average adult flea jump?If you were able to jump 200 times your height, about how many yards would you be able to jump?

130. Writting skills

Q-----An appositive is a noun that is placed after another noun in order to tell more about it and its usually set off with commas.

131. Physics

A 7300-kg satellite has an elliptical orbit, as in the figure. The point on the orbit that is farthest from the earth is called the apogee and is at the far right side of the drawing. The point on the orbit that is closest to the earth is called the

132. English

1. Over 15,000 skaters entered the race. 2. More than 15,000 skaters took part in the race. 3. Over 15,000 skaters joined the race. (Are they all the same and grammatical?)

133. .Chemistry Help please?

This type of question come in our exams usually that. If the Reaction P+Q → R + S is described as being of zero order with respect to P, it means that. Answer: THE RATE OF REACTION IS INDEPENDENT OF THE CONCENTRATION OF P. I want to ask that, what is

asked by Shahab Mirza
134. chemistry

what ions are present in AgNO2 + (NH4)SO4 I have Ag and N and H SO is a solid formed? no?

135. math

i am a number between 5 and 10. my decimal is in tenths. the sum of my digits is 10. what number could i be?

136. chemistry

The density of (Hg) is 13.53 g/mL. How many liters will 4.2x10^21 atoms of Hg occupy?

137. Chemistry

Among the following electrons, which has highest energy? a. n = 3, l = 2, m = 0, s = + 1/2 b. n = 4, l = 0. m= 0 , s = - 1/s answer is A. but i want to know that how to get this answer help please?

asked by Shahab Mirza
138. SS

I have to show constrasting landforms of Canada and the US (dry area and ice, for example). What are some landforms I can use?

139. English

What does this mean in the Gift of the Magi? While the mistress of the house is gradually subsiding from the first stage to the second, take a look at the home. A furnished flat at \$8 per week. It did not exactly beggar description, but it certain had that

140. Physics

You kick a ball off the ground with a horizontal speed of 16 m/sec and a vertical speed of 20.7 m/sec. 1. The ball reaches it's highest point how many seconds after it is kicked. 2. It reaches the ground how many seconds after it is kicked.

asked by Mack K
141. Organic Chem Help

You react hydrogen iodine with 3-methylhex-3-ol. a) write the overall equation for the reaction. b) do you expect this reaction to go by an SN1 or an SN2 mechanism? Explain your answer. c) give a detailed reaction mechanism for the reaction showing all

142. Math

The sum of the measures of four of the angles of a heptagon is 520. Two of the remaining three angles are congruent. The other remaining angle is 3/2 the measure of one of the two congruent angles. Find the measures of the remaining angles.

143. Math

If the measure of an interior angle of a regular polygon is 165, find the sum of the measures of its interior angles

144. Math

Find the number of the sides of a regular polygon, if the measure of one of its exterior angle is between 28 and 32.

145. trig

what is the angle of elevation of a 15 foot ladder leaning 12 feet up a building?

146. Math

She jogged 3.647 miles one day and 3.003 miles the next. How much further did she jog the first day the the second day? Round answer to the nearest tenth of a mile.

147. Physics

The height of the sun from point A is larger than from point B by 4.92 degree.If the distance between A and B is 500 Km, How long is the circumference of the earth? ( assume that earth is perfect sphere)

148. houston community college

while the pressure of 1.40 L of a gas is kept constant its temperature increased from 27.0 C to 177 C . calculate the new volume.

149. physics

A ball is attached to a paddle by a rubber band. The ball is initially moving away from the paddle with a speed of 4.4 m/s. After 0.33 seconds it is moving towards the paddle with a velocity of 2.8 m/s. What is the average acceleration in m/s2 during this

150. math

(x + 2y)^2 simplified

151. physics urgent

I need help with this problem. I know the answer is (2.1630342940) but I have no idea how to get there. I know i need to sum the forces for each. Block m1( 6 kg ), lies on an incline plane with a coefficient of kinetic friction of 0.15. m1 is connected to

152. 5th grade math

What percent more than 2 is 16/5? Help me please

153. physics help

I know that the answer to this problem is (0.2237232293) and to begin it by making a force body diagram, but I need help setting up the equation(s). Thanks! A box rest on an incline making a 30 angle with the horizontal. It is found that a parallel force

154. Algebra

Perform the indicated operation or 6x/16+1/16

155. English

what is the focus of the novel of the great gatsby, whats the writers styles, and his views and tone toward the subject (even if it is himself)

156. Analytic Geometry CHECK MY ANSWER

What is the slope of the line that passes through the points (2, 3) and (2, 6)? Option A: -3/2 Option B: -3/4 (MY ANSWER) Option C: 3/4 Option D: 0

Company X stocks a certain type of containers, each of which occupies 4 square feet of warehouse space. The warehouse space currently available for storing this type of container is limited to 3000 square feet. Demand for the container is 12,000 units per

158. AP CALC. AB

Let f(x)=3/x. If the rate of change of f at x = c is three times its rate of change at x = 2, then c = ?

159. English

1. The ice must be at least 15 centimeters thick. 2. The ice must be not less than 15 centimeters thick. ----------- Are both the same? Are they grammatical? Have a great weekend. Thank you for your help.

160. simplify

5x + 3y - 2x + y

161. one last difference (math)

This time, it's decimals that i need help with. - What fraction less than 1.8 is 1.2?

162. Algebra 1 Check

This is the last question on my homework and I wanted to know if I got it right. Thanks! Which of the following inequalities is true for all real numbers of x? a.) x^2≤x^3 b.) 2x^3≤4x^2 c.) 4x^2≤(4x)^2 d.) 4(x-3)^2≥4x^2-3 My answer: C.