myra

Most popular questions and responses by myra
  1. physics

    Four 7.5 kg spheres are located at the corners of a square of side 0.60 m. Calculate the magnitude and direction of the gravitational force on one sphere due to the other three.

    asked on May 27, 2012
  2. physics

    A wet bar of soap slides freely down a ramp 2.0 m long inclined at 6.8o. How long does it take to reach the bottom? Neglect friction.

    asked on April 11, 2012
  3. geometry

    Determine whether triangle PQR is congruent to triangle STU given the coordinates of the vertices. Explain. P(4,0),Q(2,-3)r(-1,4),S(-1,4), t(1,-1),u(4,6)

    asked on June 25, 2016
  4. math

    When 6 gallons of gasoline are put into a car's tank the indicator goes from 1/4 of a tank to 5/8. What is the total capacity of the gas tank?

    asked on August 28, 2012
  5. Informal Logic

    21{4[1(10)54]}> Choose the pair of words/phrases among the choices that exhibits the same logical relationship as the words/phrases in the following pair. heavy : weight (Points : 1)

    asked on September 11, 2011
  6. Math (statistics)

    The probability of obtaining heads on a biased coin is 0.4. The coin is tossed 600 times. a. i. Write down the mean number of heads (240) ii. Find the standard deviation of the number of heads (12) b. Find the probability that the number of heads obtained

    asked on March 16, 2016
  7. physics

    A +5.7 C and a -3.5 C charge are placed 25 cm apart. Where can a third charge be placed so that it experiences no net force? (Restrict your analysis to a linear one.)

    asked on May 27, 2012
  8. algebra

    Melissa is 31 years younger than her dad. The sum of their ages is 61. How old is Melissa? How old is her dad?

    asked on October 6, 2009
  9. physics

    An 8.0 kg puck floating on an air table is travelling east at 15 cm/s. Coming the other way at 25 cm/s is a 2.0 kg puck on which is affixed a wad of bubble gum. The two slam head-on into each other and stick together. Find their velocity after the impact.

    asked on May 27, 2012
  10. physics

    Two identical charges, q1 = q2 = 6.0 C, are separated by 1.0 m. a. Calculate the electric field and electric potential difference at point P, midway between them. b. Replace one of the charges with a charge of the same magnitude but opposite sign and

    asked on May 15, 2012
  11. PHYSICS

    Two balls collide on a horizontal, frictionless table. Ball A has a mass of 0.175 kg and travelling at 1.20 m/s [E 40o S]. Ball B has a mass of 0.225 kg and is travelling at 0.68 m/s [E]. The velocity of ball B after collision is 0.93 m/s [E 23o S].

    asked on May 10, 2012
  12. physics

    If the electric potential energy between two charges of 1.5C and 6.0 C is 0.16 J, what is their separation?

    asked on May 15, 2012
  13. algebra

    It took Todd 11 hours to travel over pack ice from one town in the Arctic to another town 330 miles away. During the return journey, it took him 15 hours. Assume the pack ice was drifting at a constant rate, and that Todd’s snowmobile was traveling at a

    asked on January 12, 2017
  14. Finance

    suppose the interest rate is 8% APR with monthly compounding. what is the present value of the annuity that pays $100 for every 6 years?

    asked on September 14, 2014
  15. physics

    An electron is accelerated in the uniform field E = 2.0 x 104 N/C between two parallel charged plates (Negative charged plate is on the left and positively charges plate is on the right). The separation of the plates is 1.5 cm. The electron is accelerated

    asked on May 27, 2012
  16. physics

    A space shuttle orbiting Earth at an altitude of 295 km completes an orbit in 90.0 min. Calculate its acceleration and compare it to the acceleration at Earth’s surface.

    asked on April 11, 2012
  17. physics

    Two equal weight monkeys each hang from the ends of a rope passing over a weightless, frictionless pulley. If one accelerates up the rope, what happens to the other?

    asked on April 11, 2012
  18. social studies

    in what two regions do the appalachians lie?

    asked on October 20, 2009
  19. physics

    Show that if a satellite orbits very near the surface of a planet with period T, the density (mass per unit volume) of the planet is p(rho)=3pi/(GT)^2

    asked on May 27, 2012
  20. physics

    Point X and Y are 30.0 mm and 58.0 mm away from a charge of +8.0 C. a. How much work must be done in moving a +2.0 C charge from point Y to point X? b. What is the potential difference between points X and Y? c. Which point is at the higher

    asked on May 15, 2012
  21. physics

    If the mass of the Moon is 7.4 x 1022 kg and its radius is 1.74 x 106 m, compute the speed with which an object would have to be fired in order to sail away from it, completely overcoming the Moon’s gravity pull.

    asked on May 27, 2012
  22. Math

    Charles is going camping with his family their campsite is 5/8 mile away they walk a steady speed of 1 7/8 miles per hour how many minutes will it take them to get to the campsite?

    asked on March 1, 2016
  23. physics

    If a negative charge is initially at rest in an electric field, will it move towards a region of higher potential or lower potential? What about a positive charge? How does the potential energy of the charge change in each case?

    asked on May 27, 2012
  24. physics....

    A 32.0 kg child descends a slide 4.00 m high. She reaches the bottom with a speed of 2.40 m/s, was the mechanical energy conserved? Explain your reasoning and identify the energy transformations involved.

    asked on May 9, 2012
  25. physics

    A 1000 kg car is travelling on the highway at a constant speed of 110 km/h. The highway makes a turn that is banked at an angle of 10o and has a radius of 160 m. What is the coefficient of friction between the car tires and the pavement in the curve?

    asked on April 25, 2012
  26. Business communication

    A final notice collection letter from an appliance manufacturer to an appliance dealer, sent 10 days before initiation of legal collection procedures. Who is the audience?

    asked on October 10, 2015
  27. physics

    Two toboggans are pulled across the ice with a force of 1.2 x 102 N. The rope of the toboggan makes an angle of 55o with the horizontal. The first toboggan has a mass of 25 kg, and the second toboggan has a mass of 16 kg. Assume that the ice surface is

    asked on April 25, 2012
  28. chemistry

    When a student plotted ln [vapor pressure of a gas] vs. inverse Kelvin temperature, she obtained a straight line with a slope equal to -1.0500 x 10^4 K. According to the Clausius Clapeyron equation, Hvap is kJ/mol. ?

    asked on February 1, 2008
  29. physics

    Jane hopes to meet Tarzan by sliding down a rope, made of nylon stockings, from her treetop home. The stockings will break if the tension in them exceeds 400 N. Jane has a mass of 60 kg. What is the maximum acceleration with which she can slide down the

    asked on April 25, 2012
  30. chemistry

    How many grams of ethylene glycol, HOCH2CH2OH, are present in 2.6 gallons of a 4.61 m solution with a density of 1.88 g/mL? i think that this is a dimensional analysis type of question. 1 gal ~ 3485.41 ml. i just need help with the set up, i think...

    asked on May 11, 2011
  31. PHYSICS

    What major obstacle did Henry Cavendish face when measuring the gravitational force between two objects on Earth? A) The masses required had to be very small. B) The gravitational force between the two masses was very small. C) The distance between the two

    asked on May 15, 2012
  32. physics

    A mass of 300 g is attached to a string that is 1.21 m in length. The mass is whirled in a horizontal circle on a surface and completes 7.00 rotations in a time of 2.71 s. The force of tension in the string is 92.7 N. Determine the force of friction

    asked on April 25, 2012
  33. physics

    A motorcycle stunt rider wants to do a loop-the-loop within a vertical circular track. If the radius of the circular track is 10.0 m, what minimum speed must the motorcyclist maintain to stay on the track? Suppose the radius of the track was doubled. By

    asked on April 11, 2012
  34. Math

    There are 28 pears on 4 trees. There are the same number of pears on each tree. How many pears on each tree? If Jomel picks 10 pears, how many pears will be left on the trees? My answers: 7 pears on each tree. 18 pears will be left on the trees. Is this

    asked on November 1, 2011
  35. English

    Ethical dilemma or an ethical lapse? Your supervisor has asked you to withhold important information that you think should be included in a report you are preparing. Obeying her could save the company serious public embarrassment, but it would also violate

    asked on October 10, 2015
  36. algebra

    20+2x/5-x For what value of x is the rational expression below equal to zero?

    asked on November 16, 2012
  37. physics

    Devise a method for measuring the coefficient of friction between two surfaces using an inclined plane

    asked on April 11, 2012
  38. Estimating Quotients

    Carl needs to estimate the quotient 547÷92. Explain how Carl could use compatible numbers to make a reasonable estimate.

    asked on September 28, 2014
  39. geometry

    If J is the midpoint of MN and JM=5x-5 and JN=4x+2, find the length of MN.

    asked on October 3, 2012
  40. geometry

    Points A, B, and C are collinear, and C is between A and B. If AB=8x-4, BC=x+2, and AC=x^2, find the values of x.

    asked on October 3, 2012
  41. physics

    It is fairly easy to catch a 20 N steel weight dropped from a height of 0.25 m or so. But if you attempt to catch the weight while resting your hand flat on a table, you are likely to be injured. Explain.

    asked on May 27, 2012
  42. physics

    Point X and Y are 30.0 mm and 58.0 mm away from a charge of +8.0 C. a. How much work must be done in moving a +2.0 C charge from point Y to point X? b. What is the potential difference between points X and Y? c. Which point is at the higher

    asked on May 16, 2012
  43. physics

    You want to design a curve, with a radius of curvature of 35.0 m, so that a car can turn at a velocity of 15 m/s on it without depending on friction. At what angle must the road be banked?

    asked on April 11, 2012
  44. Informal Logic

    11{1[2(06)06]}> Reporter: A new campaign finance reform bill being considered by Congress would limit the amount of campaign contributions that political candidates can receive. However, a survey of candidates running for mayor, governor, and senate seats

    asked on September 11, 2011
  45. Algebra

    0.3x-0.2y=4,0.5x+0.5y=-15/9 solve

    asked on November 7, 2009
  46. algebra 1

    Solve inequaity: -2x/7 -8>-9 Please need help, cant figure this one out,thank you kindly

    asked on May 19, 2014
  47. physics

    Imagine a car involved in a head-on crash. The driver, whose mass is m, is to be brought uniformly to rest within the passenger compartment by compressing an inflated air bag through a distance sc. Write an expression for the average force exerted on the

    asked on May 27, 2012
  48. physics....plzzz help

    To move a charge of +180 nC from a position where the electric potential difference is +24 V to another position where the potential difference is +8 V, how much work must be done?

    asked on May 15, 2012
  49. physics

    A car is driving up a curvy mountain road. If the car navigates at the same speed two corners that have the same radius of curvature, but the second curve is banked at twice the angle of the first, what effect will this have on the vehicle?

    asked on April 25, 2012
  50. Trigonometry

    Suppose that after you are loaded into a FerrisWheal car, the wheel beguins turning at 3 revs/min.The wheal had a diameter of 20m and the bottom of the seat of the wheel is 2m above the ground. Express the hight of the seat above the ground as a function

    asked on December 4, 2008
  51. World History

    Why did Napoleon Bonaparte crown himself?

    asked on July 6, 2018
  52. geometry

    If P is the midpoint of RS and RS=17x-8 and RP=8x+1, find the values of x and PS.

    asked on October 3, 2012
  53. physics

    Why do you lose weight when you enter a tunnel passing through a mountain tunnel or walk inside a skyscraper?

    asked on May 27, 2012
  54. priciples of business

    how to make a project presentation on , International Organization Enviornment

    asked on September 16, 2011
  55. lgebra

    How do I solve this litreal equation? Solve q = 1 - p for p in terms of q.

    asked on October 18, 2010
  56. chemistry

    How many compounds would there be in a combinatorial library of ester compounds made from every isomer of monofluorobenzoic acid and every possible alkyl alcohol with 4 or less carbon atoms? 1. 11 2. 24 3.12 4.21 i know its either 21 or 24 but im not sure

    asked on February 18, 2010
  1. Algebra

    4x+6=90 4x=84 x=21

    posted on May 1, 2018
  2. College Physics

    asdad

    posted on May 31, 2017
  3. Chemistry

    13.2

    posted on February 1, 2017
  4. parentheses

    Where do you insert parentheses in the problem,5-3×2+7=6

    posted on December 31, 2016
  5. math

    37.5

    posted on November 25, 2015
  6. chemistry

    When iron ii turned blue it indicates that there was mixture with oxygen which increased the number to iron iii

    posted on November 19, 2015
  7. government

    . Describe two ways the federal bureaucracy helps to shape laws passed by Congress.

    posted on December 20, 2012
  8. physics

    we are hurt because wen the weight falls on our hand it applies force on our hand but when the hand tries to pass the force over to the table it does not pass . this is because the force of the table on the hand is higher than the force of the hand on the

    posted on May 27, 2012
  9. physics

    the square shape is for mu.....

    posted on May 16, 2012
  10. physics

    Thanx elena for all the answers :-)

    posted on May 16, 2012
  11. physics

    thanx elena :-)

    posted on May 16, 2012
  12. physics....plzzz help

    thanx elena :-)

    posted on May 16, 2012
  13. physics

    thanx elena :-)

    posted on May 16, 2012
  14. PHYSICS

    can u pls explain to me y is it the and B) ....thank you very much elena .... :-)

    posted on May 16, 2012
  15. physics

    m nt good at physics .....i don't understand physics so well .....i try to do the problems but they don't make sense at all .....so i ask it here ...and wen someone helps me ...i understand them and then only write them ......m not cheating .....i just

    posted on May 15, 2012
  16. physics

    bt how do u find the mass......the mass is not given in the question

    posted on April 12, 2012
  17. physics

    Thank you.... :-)

    posted on April 11, 2012
  18. Math

    thanks

    posted on November 1, 2011
  19. A U

    Detective: The robbery at the mall was carried out by a mall employee acting alone roughly one hour after the mall closed last Saturday night. The only employees present at the mall at the time of the robbery were security guards Evans and Clark. Since the

    posted on September 11, 2011
  20. chemistry

    is the answer supposed to be 87297?

    posted on February 1, 2008
  21. MATH

    100.231

    posted on September 13, 2007