Questions Asked on
February 7, 2014

  1. physics

    Consider two copper wires with the same cross-sectional area. Wire A is twice as long as wire B. How do the resistivities and resistances of the two wires compare? CHECK ALL THAT APPLY Wire A and wire B have the same resistance. Wire A has twice the

  2. Chemistry

    Rank Cd, Br, and Si from worst to best conductor of electricity. Is it Br, Cd, Si? Thanks -MC

  3. probability

    You flip a fair coin (i.e., the probability of obtaining Heads is 1/2) three times. Assume that all sequences of coin flip results, of length 3, are equally likely. Determine the probability of each of the following events. {HHH}: 3 Heads incorrect {HTH}:

  4. probability

    Alice and Bob each choose at random a real number between zero and one. We assume that the pair of numbers is chosen according to the uniform probability law on the unit square, so that the probability of an event is equal to its area. We define the

  5. college physics 2

    A current of 2.10A flows in a wire. How many electrons are flowing past any point in the wire per second? N=________________________ electrons/s

  6. probability

    PROBLEM 4: PARKING LOT PROBLEM (3 points possible) Mary and Tom park their cars in an empty parking lot with n≥2 consecutive parking spaces (i.e, n spaces in a row, where only one car fits in each space). Mary and Tom pick parking spaces at random. (All

  7. math

    the fourth term of an arithmetic progression is equal to 3 times the first term and the seventh term exceeds twice the third term by 1 find the first term and the common differrence

  8. Pre-algebra

    David must choose a number between 49 and 95 that is a multiple of 4, 6, and 8. Write all the numbers that he could choose. If there is more than one number, separate them with commas.

  9. statistics

    A multiple choice test has 3 questions and each question has 3 choices. If Nacho takes this test, what is the probability that he will: (a)answer all questions correctly? (b)answer all questions wrong? (c)answer two questions correctly?

  10. physics

    A speeder traveling at 30 m/s passes a motorcycle policeman at rest at the side of the road. The policeman accelerates at 2.4 m/s2. To the nearest tenth of a second how long does it take the policeman to catch the speeder?

  11. math

    0.06 2/3 into a fraction

  12. Math

    What equation cannot be solved and why?

  13. algebra

    A man and a woman's ages total 98. He is twice as old as she was when he was her age now. What are their ages?

  14. probability

    Q: A train and a bus arrive at random between 9AM and 10AM. The train stops for 10 minutes and bus for ‘x’ minutes. Find ‘x’ so that the bus and train will meet with probability of 0.5

  15. physics

    A constant voltage is applied across a circuit. If the resistance in the circuit is doubled, what is the effect on the power dissipated by the circuit? a. The power dissipated is reduced by a factor of 4. b. The power dissipated is quadrupled. c. The power

  16. Math

    Peter notices that the teenage students who are members of the math club have ages whose product is 611520. How many members does the club have? Extensions: Is it true that whatever number replaces 611520 that this problem has a unique solution? Suppose

  17. help

    the first term of an original sequence is 3,6,9,12,15,... Find the first six terms in each of the following case: 2.The sum of the first two terms of the original sequence is 7

  18. Math

    Find the largest positive integer that leaves the same remainder when divided into each of 889, 961, 1009, and 1189

  19. physics

    How far to the nearest tenth of a meter can a runner running at 10 m/s run in the time it takes a rock to fall from rest 99 meters?

  20. Classical mechanics

    A boat leaves point P on one side of a river bank and travels with constant velocity V in a direction towars point Q on the other side of the river directly oposite P and distance D from it If r is the instantaneous distance from Q to the boat, θ is the

  21. PE -- Connexus

    Wanda is playing center for her floor hockey team and sees that her right wing teammate has control of the ball. In oder to best have her body position to score from a pass sent by her right win, Wanda should position her body a. Between the other team's

  22. SS --- one question pls help asap!!!!!

    hi, pls help asap!?? one social studies question! The Industrial Revolution led to changes as the U.S. became more economically independent. Which of these changes occurred during this time? A. Cities began to grow, because individuals moved from farms

  23. math

    (a). Is it true that for all set of positive integers a, b, c. gcd(a,c) + gcd(b,c) = gcd(a + b,c). Explain (b) Is it true that there exist a set of positive integers a,b,c, such that gcd(a,c) + gcd(b,c) = gcd(a + b,c). Explain

  24. programming

    Q. How do i make an optical illusion using turtle graphics? Thank you.

  25. Visual Basic 6.0

    Design and develop a simple application system that converts the input dollars into its equivalent Yen rate. Where the user enters the value of the dollar in text box 1, the user should click the command button before the resulting value will be displayed

  26. Math

    A simple calculation will reveal that 72 has 12 factors including 1 and 72. How many natural numbers less than 100 have 12 such factors

  27. Math

    Show that the equation 155x -465y 35 has no integer solutions

  28. Statistics

    Determine if the following are probability distributions (if no, state why). a. X 3 6 9 12 15 P(X) 4/9 2/9 1/9 1/9 1/9

  29. history

    who was the audience for the black mans burden by Edward D. Morel?

  30. Algebra 1 (Reiny)

    Simplify. All variables represent nonnegative numbers. 1. 3^√8m^3 2. (a^2b^4)^1/23^√b^6 3. 3^√27x^6

  31. physics

    Q. A 200 kg load is suspended by a cable from a crane . Two ropes are attached to the load , acting at 90 deg to each other. One rope exerts a pull of 220 N , at 10 deg below horizontal, the other rope exerts a force of 360 N at 15 deg below horizontal.

  32. Math

    Find the largest positive integer that leaves the same remainder when divided into each of 889, 961, 1009, and 1189

  33. Physics

    You're driving down the highway at 20m/s when you see a snowman you don't want to crush 35 m in front of you. Your reaction time before stepping on the brakes is 0.5s, and acceleration created by your brakes is 10 m/s^2 what was the distance travelled

  34. math

    It will cost $0.15 to cover 1000 cm² with paint. About how much will it cost Chen to paint his office? Show your work.

  35. math

    IF CIRCLE IS NOT A POLYGON . SO ,HOW CAN WE SAY THAT IT HAS A STRAIGHT SIDES ?

  36. Math

    Can you help me in math please, I don't understand this. My book shows me the area of a parallelogram, and area of a triangle, but it show me what to do if there's fractions in the problem. A. 12 1/2 ft2 B. 7 7/8 ft2 C. 8 1/4 ft2 D. 15 3/4 ft 2 Thank you.

  37. math

    rewrite these numbers (2,1,3)from biggest to smallest and draw the counters.what is the solution to that?

  38. physics

    A wire 1m long and weighting 5 gm is stretched by a tension of 4kg wt. When sounded, it is found to vibrate in two loops. Calculate the frequency of the note emitted by the wire.

  39. chemistry

    Divers know that the pressure exerted buy the water increases about 100kpa with every 10.2 m of depth. This means that at 10.2 m below the surface, the pressure is 201 kpa; at 20.4 m , the pressure is 301 Kpa; and so forth. Given that the volume of a

  40. Social Studiesss

    11. What resources led to the appearance of the Industrial Revolution in New England? (5 points) 12. During the early 1800s, the United States tried to make peace with other countries in order to grow and develop. Give an example of one of these peace

  41. Algebra 1 (Reiny)

    Simplify each expression. 1. (8/27)^1/3 2. (8/27)^2/3

  42. chemistry

    2)Tf = (0.00089 +/- 0.00008) * (13 +/- 2) + (19.627 +/- 0.004) Tf = (0.012 +/- 0.002) + (19.627 +/- 0.004) Tf = 19.639 +/- what value?

  43. Havlicek

    12.5 moles of a gas occupy 32.0 liters at 100.0 degrees Celsius. What is the volume of 37.5 moles of the gas at 25.0 degrees Celsius?

  44. math

    1421/7=

  45. Research Project: Anatomy & Physiology 1

    Could someone read this paper and tells me if this is good or do I need to change some stuff: Introduction: ALS is distinguish by insistent collapse of both upper motor neurons (UMN) and lower motor neurons (LMN) leading to progressive muscular paralysis

  46. Social Studies

    During the early 1800s, the United States tried to make peace with other countries in order to grow and develop. Give an example of one of these peace efforts and briefly explain what it hoped to accomplish. Could you please help? Ideas? I don't exactly

  47. poetry

    As we find with most songs in poetry

  48. physics

    What is the resistance of a 7.4-m length of copper wire 1.2mm in diameter? The resistivity of copper is 1.68×10−8Ω⋅m. R=_________

  49. Math - Discrete math

    (1) For all integers y, there is an integer x so that x^3 + x = y. (2)For all integers x, x^3 + x is even Thank you for your help.

  50. math

    Peyton has 2 pizzas. Each pizza is cut into 10 equal slices. She and her friends eat 14 slices. What part of the pizzas did they eat? Write your answer as a decimal. My answer is 1.4

  51. world geography

    What is the secong-largest religon in russa today?

  52. World Geography

    During the late 1700s,the Russian nobility..

  53. Physics Help, check work?

    A running track consists of two straight 88.5m segments and two semicircles of radius 39.0m as shown in the figure. Part A was finding the distance a runner travels in one complete lap. d= 422 m. No problem. Then part B asks for the displacement in x, y

  54. world history

    During the early 1800s, the United States tried to make peace with other countries in order to grow and develop. Give an example of one of these peace efforts and briefly explain what it hoped to accomplish

  55. accounting

    Graham maintains that formulation and implementation are phases in the strategic management process. Yolanda maintains that evaluation and estimation are also part of this process. Who is correct? A. Yolanda is correct. B. Both Graham and Yolanda are

  56. Math - Discrete math

    1). Let G be the statement: " for all real numbers a and b, if a -|_a_| < 1/2 and b - |_b_| < 1/2 then |_a + b_| = |_a_| + |_b_|" (the symbol is for the FLOOR of a and b) A. is G true? prove it b. state wether the CONVERSE, CONTRAPOSITIVE AND NEGATION ARE

  57. accounting

    What is the typical time span for long-range plans? A. More than 1 year C. 3–5 years B. 2–3 years D. About 25 years

  58. physical science

    what do you think about the kind of charge on the plastic straw

  59. math

    a train leave Chicago at a 115 miles per hour towards Denver another train leaves Denver 105 miles per hour towards Chicago if the distance between the two cities is 1200 miles how long would it take before the two trains meet?

  60. LINEAR EQUATIONS

    how do i solve this: y = -2x +4

  61. Global Studies (Please check)

    Why did English settlers come to America? a. to find gold b. to become fur traders c. to start a new life *** d. to become missionaries How did the industrial revolution affect the poor in the late 1800's? a. The city slums emptied b. The life of the poor

  62. statistics

    a sample of men's heights was taken. The average height was 68.5 inches, the SD was 1.95 inches. Use the normal curve to estimate the percentage of men with heights between 69 inches and 70 inches.

  63. computer programming

    Develop a menu-driven program that inputs two numbers and, at the user's option, finds their sum, difference, product, or quotient.

  64. Social Studies

    During the early 1800s, the United States tried to make peace with other countries in order to grow and develop. Give an example of one of these peace efforts and briefly explain what it hoped to accomplish. An example of one of the peace efforts was the

  65. Math

    A simple calculation will reveal that 72 has 12 factors including 1 and 72. How many natural numbers less than 100 have 12 such factors

  66. Eng1511

    Hi Please assist me on this one, if one word in the sentence have inverted comma('first'),what does that mean?

  67. Algebra II

    It has a graph but i cant paste it on here, could you guide me through plz Which is a root of f(x) = 0 with a multiplicity of 2? -4 -3 3 4

  68. The language of Art

    Exam 250700RR

  69. Geometery

    If angle MNO is congruent to angle SQR which of the following is true? angle O congruent to angle Q angle M congruent to angle S angle MN (with a line of above it) congruent to ange SR (line above SR also) NO (line above the letters) congruent RS (line

  70. ASU

    Oppositely charged parallel plates are separated by 5.35 mm. A potential difference of 600 V exists between the plates. (a) What is the magnitude of the electric field between the plates? (b) What is the magnitude of the force on an electron between the

  71. Sport Strategies ~ Volleyball

    I’m doing a sport report, I pick volleyball for this sport report, and I have a question. What strategies does volleyball has? Can anyone give examples or ideas about that question? Please? Thanks!

  72. Algebra II

    Can anyone please teach me how to divide polynomials using long division? It's quite confusing. Like give me a problem to solve and guide me through it.

  73. Science

    Help, I am not sure I am doing this right. Are these correct? 1. What is the acceleration of a 1,500-kg elevator with a net force of 10,500 N? 2. What net force is needed to accelerate a 60-kg cart at 12 m/s 2? I think it is 720N

  74. college chemistry

    kilocalories released when 20.0 g of steam condenses at 100 degrees C. and the liquid cools to 0 degrees C.

  75. Physics

    A dockworker applies a constant horizontal force of 73.0N to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves a distance 11.5m in a time 5.40s . a.) What is the mass of the block? b.)If

  76. Chem

    How many grams of MG in 1.5 g of chloride ions in MGCL2

  77. Anatomy and Physiology

    Explain how a drug that sits on acetylcholine receptors will affect muscle function? Is there a good source online to find the above question? My book doesn't go into great detail for me to answer the question.

  78. physics

    One gram of nickel has 1.026 × 1022 atoms, and each nickel atom has 28 electrons. How many electrons are contained in 6.00 g of nickel? The elemental charge is 1.6 × 10−19 C. Answer in units of electrons

  79. math

    Mr. Brown has a piece of hose 11 ft long. He is going to cut it into 15 equal-length pieces.

  80. Physics

    An aluminum can is filled to the brim with a liquid. The can and the liquid are heated so their temperatures change by the same amount. The can’s initial volume at 8 °C is 3.5 × 10-4 m3. The coefficient of volume expansion for aluminum is 69 × 10-6

  81. Chemistry

    What is the typical 13 c nmr chemical shift range in ppm?

  82. Connexus, Civics, History

    Help with civics "What are the Rights of the Accused"? 1. The Supreme Court ruled in re Gault that people... A. that are under arrest must be read their rights by law enforcement. B. who cannot afford an attorney must be provided one by the state. C.

  83. Physics

    Ball A is thrown straight down off the top of a tall building with an initial velocity of 20m/s. Ball b is thrown straight up from the top of the same building with initial velocity of 20 m/s. Which ball, if either, experiences the greater acceleration

  84. ELA

    In which sentence is the word Profane/profanity used INCORRECTLY? A: They relish PROFANE gossip about their neighbors. B: However excellent its quality, we are offended to find PROFANE art in a temple. C: Then general's widow withheld from biographers

  85. math

    Ex. 120 m of fencing is to be used to form three sides of a rectangular enclosure , the fourth side being an existing wall . Find the maximum possible area of the enclosure

  86. Social Studies

    In ancient Greece, what was the importance of the Olympics? Thanks so much to anyone who will try to help!

  87. Calculus 3

    Find the center of the ellipsoid x^2+4y+2z^2+2x-4y+z = 20 I'm having trouble factoring to get the center points. Can someone please help. This is where I'm stuck. (x^2+2x+1)+4(y^2-y+1/4)+2(x^2+1/2z+1/16)=20+1+1+1/8 (x+1)^2+ Now I don't know how to get the

  88. social studies

    Who invented the cotton quill

  89. Pre Algebra

    I have to create two dice (each on has six sides) they have to be numbered in such a way that the probability of rolling the numbers 1-12 are the same? I know this is a function but I am having trouble.

  90. probability

    In this problem, you are given descriptions in words of certain events (e.g., "at least one of the events A,B,C occurs"). For each one of these descriptions, identify the correct symbolic description in terms of A,B,C from Events E1-E7 below. Also identify

  91. probability

    PROBLEM 2: SET OPERATIONS AND PROBABILITIES (3 points possible) Find the value of P(A∪(Bc∪Cc)c) for each of the following cases: The events A, B, C are disjoint events and P(A)=2/5. P(A∪(Bc∪Cc)c)= incorrect The events A and C are disjoint, and

  92. p

    Alice and Bob each choose at random a real number between zero and one. We assume that the pair of numbers is chosen according to the uniform probability law on the unit square, so that the probability of an event is equal to its area. We define the

  93. Physics

    An ice chest at a beach party contains 12 cans of soda at 4.16 °C. Each can of soda has a mass of 0.35 kg and a specific heat capacity of 3800 J/(kg C°). Someone adds a 8.48-kg watermelon at 25.7 °C to the chest. The specific heat capacity of watermelon

  94. Statistics

    A salesperson goes door-to-door in a residential area to demonstrate the use of a new Household appliance to potential customers. She has found from her years of experience that after demonstration, the probability of purchase (long run average) is 0.30.

  95. Math

    In how many ways is it possible to spend exactly $200 on pumpkins if large pumpkins cost $5 and small $3

  96. Statistics

    A salesperson goes door-to-door in a residential area to demonstrate the use of a new Household appliance to potential customers. She has found from her years of experience that after demonstration, the probability of purchase (long run average) is 0.30.

  97. Algebra

    The function p(d)=1+d/33 gives the pressure, in atmospheres (atm), at a depth d in the sea (d is in feet). Note that p(0)=1 atm, p(33)=2, and so on. Find the pressure at 100 feet. The pressure at 100 feet is ___? atm. (Type an integer or a simplified

  98. physics

    If the vertical initial speed of the ball is 4.0m/s as the cannon moves horizontally at a speed of 0.70m/s , how far from the launch point does the ball fall back into the cannon?

  99. Statistics

    If the population is normally distribution then the sample must be normally distributed even for small sample size? True or False. The variance of the standard normal distribution is always equal to 1.? True or False. A continuous random variable may not

  100. physics

    A person riding in the back of a pickup truck traveling at 60km/h on a straight, level road throws a ball with a speed of 10km/h relative to the truck in the direction of the truck's motion.

  101. physics

    Two buses leave downtown one is headed southwest the other is headed northeast. Do they have the same velocity? Why or why not?

  102. Algebra

    Find the slope (or pitch) of the roof shown below. 13 ft.| |____13.8 ft. The pitch of the roof is ___ % (Round to the nearest percent as needed)

  103. physics

    How far to the nearest tenth of a meter can a runner running at 10 m/s run in the time it takes a rock to fall from rest 99 meters? Which is: (127m+89m)/13s= 216m/13s= 16.7m/s But, the second part of the problem is: What is the runner's average velocity?

  104. Algebra

    (Can someone please help?) Find the indicated outputs for f(x)=3x^2-5x f(0)=__? f(-1)=__? f(2)=__?

  105. physics

    A runner dashes from the starting line (x = 0) to a point 127 m away and then turns around and runs to a point 38 m away from the starting point in 13 seconds. To the nearest tenth of a m/s what is the average speed? What is the runner's average velocity

  106. PHYSICS

    A car traveling at 17 m/s accelerates at 1.37 m/s2 for 12 seconds. To the nearest meter how far does it travel?

  107. Physics

    Landing with a speed of 90 m/s In the x direction a jet come to rest at 1 km. assuming the jet slows down with constant acceleration find the magnitude of it's acceleration. Is there anyway someone could break this down step by step??

  108. physics

    A passenger in a helicopter traveling upwards at 20 m/s accidentally drops a package out the window. If it takes 8 seconds to reach the ground, how high to the nearest meter was the helicopter when the package was dropped?

  109. Algebra

    Find the function value. f(x)=x^3 f(10)=__?

  110. optimisation

    Determine the maximum area of a piece of land comprising a semi-circle adjacent to a rectangle that can be enclosed by 850 metres of fencing.

  111. Math

    (2x - 5)/(x^2) = -4 How do you graph this type of equation?

  112. Math

    How do you find the solution set for x^2 + 6x + 9 = 0?

  113. algebra 2

    three computers were on sale model E computer was priced at 1/3 the price model C and model P was priced at 1/2 the price of model E on business bought one of each type of computers on sale and paid a total $1800

  114. Math

    Can you please help with the following: x^2+2x-35=0 I can't remember how to get the different possibilities. Appreciate help, thanks

  115. physics

    wo cars approach each other on a straight, level highway. Car A travels at 60 km/h and car B at 80 km/h. The driver of car B sees car A approaching at a speed of ________. Two cars approach each other on a straight, level highway. Car A travels at 60 and

  116. Math

    How to find the solution to (y-1)^2 = 9?

  117. math vector

    Find the unit tangent vector T(t) and find a set of parametric equations for the line tangent to the space curve at point P. r(t)=ti+t^(2)j+tk, P(0,0,0)

  118. physics

    he x-component of a velocity vector that has an angle of 44∘ to the +x-axis has a magnitude of 4.3m/s . What is the magnetude velocity?

  119. english

    By coaxing and questioning hour after hour, Tom finally managed to (pry, delude) the big secret from his sister.

  120. heailth

    How can communities and government help promote physical activity initiatives? A. Create walking trails B. Eliminate sidewalks C. Lower taxes D. Raise taxes

  121. Physics

    You pick up a 2.5kg can of paint from the ground and lift it to a height of 1.7m .How much work do you do on the can of paint? You hold the can stationary for half a minute, waiting for a friend on a ladder to take it. How much work do you do during this

  122. math

    Suppose that the rate of inflation over the next 60 years will be 3%, the rate of your income growth will be 4% over the next 30 years, and the rate of your investments will also be 4%. Assume continuous growth of salary, savings, etc.

  123. math linear equation

    Solve the linear equations by the matrix method:a+3b+2c=3,2a-b-3c=-8,5a+2b+c=9.solve for a:b:c

  124. physics

    A ball is thrown straight upward from ground level. At what speed must the ball be thrown if it is to reach a maximum height 21 meters above the ground?

  125. physic

    Which of these is not a statement of newton's law of universal gravitation?