# Questions Asked onSeptember 21, 2012

1. ## physics

A shot-putter throws the shot with an initial speed of 15.5m/s at a 34 degree angle to the horizontal. calculate the horizontal distance traveled by the shot if it leaves the athlete's hand at a height of 2.20m above the ground.

2. ## math

if cotx+tanx=a and secx-cosx=b then prove that (a^2b)^0.6667 -(ab^2)^0.6667=1

3. ## math

benjie spent 1/3 of his money on clothes and 1/4 of the remainder on food. if he had 180 pesos left, how much did he have first?

4. ## Physics

During a car crash a 65kg person's head goes from traveling at 50km h-1 to stationary in 0.15s. (a)What is the magnitude of the average net force acting on the head of a person with a 4.5kg head? (b)How does this compare with the weight force acting on the

5. ## algebra

the spreadsheet shows the monthly revenue and expenses for a new business.use the models to predictt the month in which revenue will equal expense. month revenue expenses jan 4000 22,000 feb 9000 24,000 mar 13,000 25,000 apr 16,000 27,000 may 21,000 30,000

6. ## math

The owner of a luxury motor yacht that sails among the 4000 Greek islands charges \$630 per person per day if exactly 20 people sign up for the cruise. However, if more than 20 people (up to the maximum capacity of 90) sign up for the cruise, then each fare

7. ## Physics

A ball is thrown from a point 1.0 m above the ground. The initial velocity is 19.6 m/s at an angle of 30 degrees 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

8. ## math

a coffee company wants a new flavor of cajun coffee. how many pounds of coffee worth \$10 a pound should be added to 20 pounds of coffee worth \$3 a pound to get mixture worth \$6 a pound

9. ## calculus 2

Find the volume of the solid formed by rotating the region enclosed by y=e^(5x) , \ y=0, \ x=0, \ x=0.8 around the y-axis Please help, i have been attempting these problems for a couple of days

10. ## math

jim began a 131 mile bicycle trip to build up stamina for a triathlete competetion.unfortunately his bicycle chain broke, so he finished the trip walking. the whole trip took 4 hours. if jim walks at a rate of 3 miles per hour and rides at 37 miles per

11. ## Physics

An 8g bullet leaves a gun at 700ms-1. (a) what is the maximum height that this bullet could reach (ignoring air resistance)

12. ## chemistry

A molecule of CHCl3 (chloroform), has the same shape as a molecule of carbon tetrahydride, CH4. But carbon tetrahydride’s boiling point is -164º C and chloroform’s boiling point is 62 ºC. Explain the difference between the boiling points of the two

13. ## physics

A high diver of mass 50.0 kg steps off a board 10.0 m above the water and falls vertical to the water, starting from rest. If her downward motion is stopped 2.10 s after her feet first touch the water, what average upward force did the water exert on her?

14. ## calculus

a) Sketch a curve whose slope is always positive and increasing. b) Sketch a curve whose slope is always positive and decreasing. c) Give equations for curves with these properties. So for a, I drew a positive slope that was concave up. And for b, I drew a

15. ## physics

A 3 lb bucket containing 40 lb of water is hanging at the end of a 20 ft rope that weighs 4 oz/ft. The other end of the rope is attached to a pulley. How much work is required to wind the length of rope into the pulley, assuming that the rope is wound onto

16. ## Accounting

A \$15 credit to Sales was posted as a \$150 credit. By what amount is Sales in error? my answer is \$135 overstated

17. ## Physics

An 8g bullet leaves a gun at 700ms-1. (a) what is the maximum height that this bullet could reach (ignoring air resistance)

18. ## Physics

A tall strongman of mass m = 93 kg stands upon a scale while at the same time pushing on the ceiling in a small room.If the scale reads 1062 N (about 239 lb), what is the magnitude of the normal force that the ceiling exerts on the strongman?

A molecule of CHCl3 (chloroform), has the same shape as a molecule of carbon tetrahydride, CH4. But carbon tetrahydride’s boiling point is -164º C and chloroform’s boiling point is 62 ºC. Explain the difference between the boiling points of the two

20. ## health

A. Fad diet B. Low-carb diet C. Stick-to-it diet D. Counting calories diet =B What are other factors that contribute to being overweight and obese besides diet and behavior? A. Personality and temperament B. Physical fitness and athletics C. Environment

21. ## math

15(5x -4)2^(1) -10(5x - 4)

22. ## Physics

A person climbs from a Paris metro station to the street level by walking up a stalled escalator in 96.5 s. It takes 60.0 s to ride the same distance when standing on the escalator when it is operating normally. How long would it take for him to climb from

23. ## Pre-Ap Physics

A rock is thrown upward at 51.1◦ with respect to the horizontal. As it rises, its vertical component of velocity 1. remains unchanged. 2. decreases. 3. increases. 4. Unable to determine.

24. ## Chemistry

A 28.4288 g sample of impure magnesium car- bonate was heated to complete decomposition according to the equation MgCO3(s) ! MgO(s) + CO2(g) . After the reaction was complete, the solid residue (consisting of MgO and the original impurities) had a mass of

25. ## physics

a couple part in a car on moonlit evening. Find that their car is stop in the sand. The women having studied physics, ties a rope to the car's bumper and stretches it around a tree in front of a car. She then pushes with 200 newton force against the

26. ## social studies

I need to write a short paragraph in which i use the following key terms: Patroon, Proprietary colony, Pacifist.

27. ## Physics

A crane is lifting a 500kg payload straight up at a constant speed of 0.7ms-1. (a)What is the power output of the crane. (ignoring losses)? (b)If it takes the cran2 2 minutes to raise the payload to its final height, how far above the ground is this? (c)If

28. ## math

The weekly demand and supply functions for Sportsman 5 X 7 tents are given by the following respective functions where p is measured in dollars and x is measured in units of a hundred. Find the equilibrium quantity. Find the equilibrium price.

29. ## All

Any websites for study guides for drivers ed?

30. ## physics

A woman at an airport is towing her 17.0 kg suitcase at constant speed by pulling on the strap at an angle θ above the horizontal. She pulls on the strap with a 26.0 N force, and the friction force on the suitcase is 14.0 N.

31. ## science

a lead bullet at 100C strikes a steel plate and melts. what was its maximum speed? the specific heat of lead is 0.13 kJ/kg C

32. ## Chemistry

A mixture of O2 and SO2 is confined in a vessel at equilibrium. Which statement describes the conditions that are true for the mixture? I. The mass of SO2 is greater II. The average molecular velocity of the O2 is greater III. The average kinetic energy of

33. ## physics

Research on the scientific principle involved in the inflation of an airbag. Explain how this device protects the driver and the front passenger from injuries.

34. ## Linear Algebra

Solve the following system using Gauss's algorithm (a) x1 + 2x2 + 4x3 + 6x4 = 3 2x1 + x2 + 3x3 = -6 -2x1 + x2 + 6x3 + 4x4 = -11 2x1 + x2 + x3 = 0 so the matrix will be: 1 2 4 6 3 2 1 3 0 -6 -2 1 6 4 -11 2 1 1 0 0

35. ## College Math

In a suburb, housing costs have been increasing at 5.2% per year compounded annually for the past 8 years. A house worth \$260,000 now would have had what value 8 years ago?

36. ## ASU

A two-tailed test is conducted at the 5% significance level. What is the P-value required to reject the null hypothesis? Answer: p

37. ## accounting

The journal entry to record the withdrawal of cash by Sue Snow, the owner, to pay a personal utility bill would include a debit to __________ and a credit to __________.

38. ## Finance

You have reviewed the books of Anderson Incorporated and learned the following: 1.) Quick Ratio is 1.4 2.) Current Ratio is 3.1 3.) Inventory Turn-Over is 4.9 times 4.) Current Assets are \$820,000 5.) Cash and equivalents are \$115,000 Using this

39. ## chemistry

When 47.5J of heat are added to 13.2 g of liquid, its temperature rises by 1.72 degrees C. What is the heat capacity of the liquid? A cook wants to heat 1.35kg of water from 32.0 degrees C to 100 degrees C. If he uses combustion of natural gas to heat the

40. ## Physics Pre-Ap

014 (part 1 of 2) You drop a stone from a position of rest. How far will it fall vertically in the ﬁrst 2 s? The acceleration of gravity is 9.8 m/s 2 . Answer in units of m 015 (part 2 of 2) If you instead toss it horizontally at 2.7 m/s, how far will it

41. ## physical science

A 70-kg man and a 50-kg woman are in a 60-kg boat when its motor fails. The man dives into the water with a horizontal speed of 3m/s in order to swim ashore. If he changes his mind, can he swim back to the boat if his swimming speed is 1m/s? If not, can

42. ## essay

Imagine that you are hosting a group of exchange students next term. You are responsible for welcoming the students to campus and acquainting the students with life on campus socially as well as academically. Develop a "Welcome Letter" for the visiting

43. ## Physics

In 1865, Jules Verne proposed sending men to the Moon by firing a space capsule from a 220-m-long cannon with final speed of 10.97 km/s. What would have been the unrealistically large acceleration experienced by the space travelers during their launch? (A

44. ## chemistry

how many grams of carbon dioxide can be produced by burning 7.04moles of propane

45. ## Chemistry

I have 3 I don't understand how to do. A 33.2 g of iron ore is treated as follows. The iron in the sample is all converted by a series of chemical reactions to Fe2O3. The mass of Fe2O3 is measured to be 12.3 grams. What was the percent iron in the sample

46. ## physical education

why is aerobic exercise the best exercise of total weight loss and fitness training?

47. ## Physics

Two 30kg children in a 20 kg cart are stationary at the top of a hill. They start rolling down the 80m tall hill and they are traveling at 30 km h-1 when they reach the bottom. (The cart had brakes!) How much work was done on the cart by friction during

48. ## public speaking

For communication to take place, there has to be: A. transmission of the message. B. medium. C. sharing of meaning. D. absence of noise.

49. ## Physics

You are conducting an experiment inside a train car that may move horizontally along rail tracks. A load is hung from the ceiling on a string. The load is not swinging, and the string is observed to make a constant angle of with the horizontal. No other

50. ## Physics

An elevator is moving at 1.1 m/s as it approaches its destination floor from below. When the elevator is a distance h from its destination, it accelerates with a = −0.55 m/s2,where the negative sign indicates a downward vertical direction. Find h.

51. ## Physics

A car travels at 64 mi/h when the brakes are suddenly applied. Consider how the tires of a moving car come in contact with the road. When the car goes into a skid (with wheels locked up), the rubber of the tire is moving with respect to the road;

52. ## physics

a couple part in a car on moonlit evening. Find that their car is stop in the sand. The women having studied physics, ties a rope to the car's bumper and stretches it around a tree in front of a car. She then pushes with 200 newton force against the

53. ## Physics

A mass with M = 122kg is attached to the bottom of a block-and-tackle pulley system.How much tension force is needed to keep the mass at its current position?

54. ## Physics

A 1560 kg car is traveling with a speed of 14.5 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 53.3 m?

55. ## Physics

An object moves in the +x direction at a speed of 30 m/s. As it passes through the origin, it starts to experience a constant acceleration of 3.7 m/s2 in the -x direction. (b) How much time elapses before the object returns to the origin? _____________s

56. ## physics

a projectile is shot from the edge of a cliff h=145m above ground level with an initial speed of vo=135m/s at an angle of 37.0 with the horizontal. determine time taken to hit point p at ground level. determine the range of x of the projectile as measured

57. ## Physics

A juggler performs in a room with a ceiling 2.71 m above hand level. What is the maximum upward speed (in m/s) which she can give a ball without letting it hit the ceiling? _________m/s

58. ## Physics

A car is traveling at a constant negative velocity of 12.0 m/s. The driver steps on the brakes. The car slows to a stop. The car travels 10.0 m while it is slowing down. What is the magnitude of its acceleration? [HINT: Pay attention to direction.]

59. ## precal help

The numerator of a fraction is four less than the denominator The sum of the fraction and its reciprocal is 5/2 Find the numerator and denominator if each is a positive integer

60. ## Calculus

The displacement (in meters) of a particle moving in a straight line is given by the equation of motion s = 5/t2, where t is measured in seconds. Find the velocity of the particle at times t = a, t = 1, t = 2, and t = 3. (a) Find the average velocity

61. ## precal help

The numerator of a fraction is four less than the denominator The sum of the fraction and its reciprocal is 5/2 Find the numerator and denominator if each is a positive integer

62. ## Chemistry

If 6.0 liters of methane react with 12.0 liters of oxygen according to the equation CH4 + 2O2 → CO2 + 2H2O, and the temperature and the pressure are kept constant, which of the following is true? a. All the methane and oxygen react. b. Oxygen is in

63. ## Chemistry

A 1.5 gram sample of a gaseous hydrocarbon has a volume of 820 mL when measured at 227 oC and 2.50 atm. Which of the following is the formula for the gas?

64. ## physics

It takes you 7.3 min to walk with an average velocity of 1.5 m/s to the north from the bus stop to the museum entrance. How far did you walk? Answer in units of m

65. ## Stats

The time you wait in a bank until you are served by a teller is exponentially distributed with mean 10 minutes. Calculate the probability that you will have to wait between 5 and 15 minutes.

66. ## Phamacy math

One teaspoonful diluted to a quart results in a 1/5000 solution. What is the amount of potassium permanganate in grams required to fill this prescription?

67. ## Art

What style did Filippo Brunelleschi use?

68. ## Theatre History paper

Can someone tell me where I can Find reliable sources for Electra by Eurpides ?

Please help me with these questions. This is not homework. I am just trying to figure out some things that I need help with. When separating mixtures what is filtration? what is distillation? what is crystallization? what is chromatography? Thank you,

70. ## Chemistry

Given 2 moles of NaCl, find the number of moles of Na. If you could show me the exact steps, that would be much appreciated.

71. ## Algebra

Eva invested a certain amount of money at 12% interest and \$1500 more than that amount at 13%. Her total yearly interest was \$800. How much did she invest at each rate?

72. ## mathematics

what is the square and square root of zero

73. ## physics

what is the graph of potential energy and kinetic energy against distance?

74. ## physics

A passenger sitting in the rear of the bus claims that he was injured when the driver slammed on the brakes, causing a suitcase in front of the bus to come flying towards him. If you were the judge in this case, what disposition would you make and why?

75. ## biochemistry

The pH of 0.02M solution of a weak acid was measured at 7.6. What is the [OH-] in this solution? B) The Ka for benzoic acid is 6.4 x 10-5M. 150 ml of 0.1 M NaOH is added to 200 ml of 0.1 M benzoic acid, and water is added to give a final volume of 1 L.

76. ## Governement

Please explain the Voting Rights Act of 1965

77. ## college math

its estimated that between 1815 and 1975 some 2,580,071,000 copies of the bible were printed. write the word name for 2,580,071,000.

78. ## Chemistry

How many hydrogen bonds can an ethanol molecule form to neighboring water molecules ? Why?

79. ## physics

Research on the scientific principle involved in the inflation of an airbag. Explain how this device protects the driver and the front passenger from injuries.

80. ## Algebra

Solve for x: logx +log(x-5)=2

81. ## science

how to prepare 0.100M HCL solution when laboratory grade concentrated by hydrochloric acid has concentration of 37%.what volume of acid is necessary to prepare 500mL of 0.100M of HCL

82. ## accounting

Salt River Copmany is evaluating a capital expenditure propsal that has the following predicted cash flows: Intial investment \$(43,270) Operation Year 1 20,000 Year 2 30,000 Year 3 10,000 Salvage 0 a. Using a discount rate of 14 percent, determine the net

83. ## accounting

Salt River Copmany is evaluating a capital expenditure propsal that has the following predicted cash flows: Intial investment \$(43,270) Operation Year 1 20,000 Year 2 30,000 Year 3 10,000 Salvage 0 a. Using a discount rate of 14 percent, determine the net

84. ## Chemistry

Using the equation 4Fe + 3O2 -> 2Fe2O3, calculae the total mass of oxgen needed to react wih all of 0.55 g of iron.

85. ## statistics

A two-tailed test is conducted at the 5% significance level. What is the right tail percentile required to reject the null hypothesis?

86. ## Science

If a yo yo has a speed of 3 m/s at the top of the circle, whose radius is 80 cm, What is its speed at the bottom

87. ## statistics

A two-tailed test is conducted at the 5% significance level. What is the right tail percentile required to reject the null hypothesis?

88. ## physics

how much negative work is done by friction on a 2000-kg car if you slow down from 20 m/s to 10 m/s?

89. ## statistics

A two-tailed test is conducted at the 5% significance level. What is the right tail percentile required to reject the null hypothesis? Show work to understand.

B. Telephones S.'s store and orders certain goods that S. delivers to B. Neither party says anything about the price or payment terms. B. does not pay S. Is S. entitled to be paid by B.? Why?

92. ## statistics

Lilly collects data on a sample of 40 high school students to evaluate whether the proportion of female high school students who take advanced math courses in high school varies depending upon whether they have been raised primarily by their father or by

93. ## statistics

Lilly collects data on a sample of 40 high school students to evaluate whether the proportion of female high school students who take advanced math courses in high school varies depending upon whether they have been raised primarily by their father or by

94. ## statistics

suppose 45 students in an organization are male and 55 are female. Ten females and 15 males in the organization are graduating students. What is the probability that a: a.) student chosen at random is male or a graduating student? b.) students chosen at

95. ## Chemistry

A 1.00 g sample of enriched water, a mixture of H2O and D2O, reacted completely with Cl2 to give a mixture of HCl and DCl. The HCl and DCl were then dissolved in pure H2O to make a 1.00 L solution. A 25.00 mL sample of the 1.00 L solution was reacted with

96. ## economics

Suppose the president is attempting to decide whether the federal gov should spend more research to find a cure for heart disease. How should policy makers determine the amount of money that should be allocated for research curing heart disease? they

97. ## mathematics

give the image for r= sin1/2theta

98. ## law/421

How are the UCC requirements different for a merchant versus a nonmerchant

99. ## math

if you have a cylinder is that is 3 1/2 in. diameter and 3 in. tall what is the total cubic inches

100. ## math

Which exponent makes the statement true?

101. ## Algebra 2

In the graph of y=kx^2 what type of number is k? I think it's the rate of change but I'm not sure

102. ## 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

103. ## Physics

a bb gun has a muzzle velocity of 325 ft/sec. How long will it take the bb to hit the ground? How far will the bb travel?

104. ## Calculus

I was able to solve (e), this is the only one I don't get. Determine whether the series is convergent or divergent and say what test you used to solve it. (d) sum n=1 to infinity (5n)^(3n) / (5^n + 3)^n

105. ## literature

What does the poet find ironic about her situation? In the poem In memory of M.B by Anna Akhmatova.

106. ## visual logics

I am trying to write a program to generate a diamond shape each line has odd number of circles. have created the left side of diamond but cant figure how to nest info to make it a complete diamond

107. ## literature

The most difficult concept in this poem may be that of heaven being the old abode of loneliness. What do you think that means? The poem Loneliness by Rainer Maria Rilke.

108. ## Physics

A car is traveling at a constant negative velocity of 12.0 m/s. The driver steps on the brakes. The car slows to a stop. The car travels 10.0 m while it is slowing down. What is the magnitude of its acceleration? [HINT: Pay attention to direction.]

109. ## social studies

With the vital assistance of _______, Theodore Roosevelt established the first comprehensive national conservation policy. A. Upton Sinclair B. William Howard Taft C. Gifford Pinchot D. Samuel Hopkins Adams

110. ## Calculus

Determine the polar form of the complex number 3 - 2i. Express the angle theta in degrees, where 0

111. ## physical scienece

Does every moving body possess kinetic energy? Does every stationary body possess potential energy?

112. ## chemitry

A block of aluminum with a volume of 98.5 cm3 absorbs 67.4 J of heat. If its initial temperature was 32.5°C, what is its final temperature? (density of aluminum = 2.70g/cm3)

113. ## English

Would you use a or an: A(n) Olympic Champion's signature.

114. ## Science

How do elements such as chlorine, bromine, sulfur, and boron get into the ocean? A. runoff from rivers and streams B. excretions from marine organisms C. volcanic eruptions D. chemical weathering of rocks Reset Selection

115. ## science

scientist do experimental tests more than once

116. ## calc 3

The length script l, width w, and height h of a box change with time. At a certain instant the dimensions are script l = 7 m and w = h = 5 m, and script l and w are increasing at a rate of 6 m/s while h is decreasing at a rate of 4 m/s. At that instant

117. ## Physics

1) On a plot of position x versus time t for an object’s motion, what corresponds to the object’s velocity at any given instant t1? A. slope at the point on the plot corresponding to t1 B. intercept on the horizontal axis C. inverse of the slope at the

118. ## math

tell whether the given rates are equilivent... 32 ft/sec; 192 ft/min. ________________________________ 8.4 gal/day; 2 qt/hr..

119. ## word power

8. Often applied to politicians, the term _______ suggests hiding one's feelings while obscuring or "spinning" facts. A. simulate B. dissimulate C. vacillate [D. dissemble]

120. ## Le math

Tomas bought some fruit at the market. He bought twice as many melons as apples. He bought 12 more melons than oranges. He bought 11 apples. How many pieces of fruit did Tomas buy?

121. ## projectile motion

a bullet is fired horizontally with an initial velocity of 600 m/s at a target located 300 m from the rifle. how much time is required for the bullet to reach the target? (B) using the approximate value of g=10 m/s squared how far does the bullet fall in

122. ## Le math

Annette wanted to buy new carpet for her L-shaped room. Which two expressions could be used to calculate the area of her room?

123. ## Physics

A barge is hauled along a straight-line section of canal by two horses harnessed to tow ropes and walking along the tow paths on either side of the canal. Each horse pulls with a force of 490 N at an angle of 16° with the centerline of the canal. What is

124. ## social studies

i need 5 major events that occurred during presidency of Franklin pierce. And i need 3 major accomplishments during presidency of Franklin pierce

125. ## Physics

Evaluate [r]; i.e., the units of r, in the expression r =v (s - a) (s - b) (s - c)/s where s =.5 (a + b + c) , and a, b, and c have units of meters. 1. [r] =1/m^1/3 2. [r] = m^1/2 3. [r] = m 4. [r] = m^2 5. [r] = m^1/3 6. [r] =1/m^2 7. [r] = m^3 8. [r]

126. ## chemistry

A hot recrystallization solution is not filtered unless absolutely necessary.give reason.

127. ## chemistry

An Erlenmeyer flask containing a hot solution is not tightly stoppered to prevent solvent loss during cooling. give reasons.

128. ## chemistry

The suction of a vacuum filtration apparatus is broken before the vacuum is turned off.give reason.

129. ## chemistry

Vacuum filtration is avoided when crystals are isolated from a very volatile solvent. why?

130. ## Drama

I'm Molly Whuppie in my school's production of Great American Tall Tales. They didn't provide any character descriptions and I'm not sure how I should approach this character. Any ideas?

131. ## Science

There are many human-caused losses of biodiversity, such as habitat destruction and introduction of invasive species. Are there any natural events that could alter the diversity index?

132. ## Math

How Do I Do An Expanded Algorithm For 23x17 ?

133. ## Physics

A steam catapult launches a jet aircraft from the aircraft carrier John C. Stennis, giving it a speed of 205 mi/h in 3.00 s. (a) Find the average acceleration of the plane. (b) Assuming the acceleration is constant, find the distance the plane moves.

134. ## math

the world record for the 100 meter butterfly swim set in 1999 was 51.81 sec. What was the average rate per second? thx:)

135. ## math

the world record for the 100 meter butterfly swim set in 1999 was 51.81 sec. What was the average rate per second?

136. ## Physics

A ball is thrown vertically upward with a speed of 15.0 m/s. (a) How high does it rise? (b) How long does it take to reach its highest point? (c) How long does the ball take to hit the ground after it reaches its highest point? (d) What is its velocity

137. ## Physics

A baseball is hit so that it travels straight upward after being struck by the bat. A fan observes that it takes 3.20 s for the ball to reach its maximum height.

138. ## geo

the uneven distribution of population in russia is due to;a.government laws about housing. b.the country's level of economic development. c.the physicxal environment. d.the country's standard of living

139. ## math help?

2x+4 (2x+6) I did this and ended up with a decimal number. I distributed then combined like terms.

140. ## Hillcrest High

Matty Kaminsky owns a new Volvo. His June monthly interest was \$400. The rate is 8 ½ percent. Matty's principal balance at the beginning of June is: (Use 360 days) (Points

141. ## probability

a disk drive is randomly selected from 50 available disk drives, of which five are defective. What is the probability that it is not defective?, hope you answer this, thanks! :)

142. ## physics

A car decelerates from 30 m/s and rests at 6 seconds in a period of 5 m/s. How far did the car travel during that time.

143. ## probability

a couple is planning to have three children. Find the probability that the couple will have: a.) 2 girls and 1 boy? b.) 2 girls followed by a boy? c.) at least 1 girl? please answer my question thank you very much, have a good day!

144. ## probability

a pair of dice is tossed. What is the probability of getting a total of 6?

145. ## physics

A group of engineering students constructs a slingshot to launch water balloons. The angle of launch is 30° and the initial velocity of the balloon is 14 m/s. The students launch a balloon from the roof of a building and the balloon lands 42 m away from

146. ## Physics

A car can be driven around a 120 m radius curve at constant speed without sliding if the maximum centripetal acceleration is 0.130g. (a) What is the maximum speed that the car can travel around the curve without sliding? (b) If the car was on a circular

147. ## Physics

Rain is falling steadily but there is no wind. You are in an automobile that moves on a straight, flat highway at a constant speed of 80 km/hr. You see from the drops on the side window that the rain is falling at an angle of 58° measured from vertical

148. ## Physics

An object moves such that its x-coordinate is given by x(t) = 6.0 m - (1.5 m/s2) t3 and its y-coordinate is given by y(t) = (8.0 m/s) t - (1.0 m/s2) t2. What is the acceleration of the object at t = 3.5 seconds? Express your answers in unit vector

149. ## Physics

A rock is thrown vertically from the edge of a cliff that is 500 ft high. It takes 6.5 seconds for the rock to hit the ground at the base of the cliff. Assume air resistance is negligible. (a) What was the initial velocity (magnitude and direction) of the

150. ## Physics

A group of engineering students constructs a slingshot to launch water balloons. The angle of launch is 30° and the initial velocity of the balloon is 14 m/s. The students launch a balloon from the roof of a building and the balloon lands 42 m away from

151. ## health

Please post a 150-300-word response to the following discussion question by clicking on Reply. What are some of the challenges to achieving overall health and wellness? How can you overcome these challenges?

152. ## vocabulary

I have to use propose to answer this question. Change one letter to make another word for market or store.

153. ## Chemistry

A 1.50- gas sample at 722 and 25.0 contains 7.56 radon-220 by volume. Radon-220 is an alpha-emitter with a half-life of 55.6s

154. ## Social Studies

The key terms Patroon, Proprietary colony, and Pacifist are described in the history of Pennsylvania but checking for understanding. Does that mean they want me to copy ashort paragraph from the same Pennsylvania subject or write an example from my own

155. ## Chemistry

A 1.50- gas sample at 722 and 25.0 contains 7.56 radon-220 by volume. Radon-220 is an alpha-emitter with a half-life of 55.6. How many alpha particles are emitted by the gas sample in 3.00 minutes?

156. ## Science

Can someone tell me if this is correct: How many forces act on an upwardly tossed coin when it gets to the top of its path? A. one the force due to gravity B. two gravity & the force in the coin itself C. three gravity the coins internal force & a

157. ## instrumental analysis

How long would it take to discharge a 0.026 microFarad capacitor to 6.4 % of its full charge through a resistance of 1.7 MOhm?

158. ## New Fedralism

From the 1970s to the present, a shift in the evolution of public policy moved toward a New Federalism. How did this effect public policy

159. ## Physics

The Earth has a mass of 5.97 x10^24 kg and the Moon has a mass of 7.36 x10^22kg. The average distance between the center of the Earth and the center of the moon is 3.84 x10^8m. (a) How far away would the Moon need to be for the magnitude of the

160. ## Physics

A car is moving in the +x direction with the following position equation of motion: x = 5.41(m/s)t - 2.7(m/s^2)t^2. (a) What is the initial velocity of the car? 5.41 m/s (b) What is the acceleration of the car? -5.4 m/s^2 (c) At what time does the car come

161. ## math

Kate is saving to take an SAT Prep course that costs \$350 and saved \$180 and she adds \$17 to her savings each week. How many more weeks must she save to be able to afford the course? Need the answer right now!

162. ## PHYSICS

A car is moving in the +x direction with the following position equation of motion: x = 5.41(m/s)t - 2.7(m/s^2)t^2. (a) What is the initial velocity of the car? 5.41 m/s (b) What is the acceleration of the car? -5.4 m/s^2 (c) At what time does the car come

163. ## chemistry

why is nh3polar but bacl2 non polar

164. ## Question regarding college

Alright, I have a question. Last year was my freshman year in high school, and I didn't really care about my grades. I wasn't failing, but they werent excellent. They were about average. This year, I am making almost all a's, im in honors classes, and im

165. ## physics

A roof tile falls from rest from the top of a building. An observer inside the building notices that it takes 0.12 s for the tile to pass her window, which has a height of 2.2 m. How far above the top of this window is the roof? m

166. ## Math

A 3-ounce serving of tuna fish provides 24 grams of protein. How many grams of protein are in a 10-ounce serving of tuna fish?

A rectangular garden of area 480 square feet is to be surrounded on three sides bya brick wall costing \$12 per foot and on one side by a fence costing \$5 per foot. Find the dimensions of the garden such that the cost of the materials is minimized.