Popular questions and responses by Gilbert
  1. Algebra

    A phone company offers two monthly charge plans. In Plan A, the customer pays a monthly fee of $13 and then an additional 6 cents per minute of use. In Plan B, there is no monthly fee, but the customer pays 8 cents per minute of use. For what amounts of

    asked on September 25, 2015
  2. electrical circuit

    A 72-ohm coil of wire is connected in series with an adjustable resistor (rheostat) whose resistance can be varied from 0 to 88 ohms. If the line potential is 115 volts, calculate (a) the range through which the coil current can be varied, (b) the rheostat

    asked on August 24, 2014
  3. chemistry

    Woiuld you expect jewelry made from an alloy of silver and copper to tarnish (oxidize) in a laboratory where fumes of bromine are present? I think that it wouldn't because the bromine fumes are probably not ions, and even if they were they would not react

    asked on February 11, 2008
  4. Physics

    A car of mass 1900kgs accelerates from rest to a speed of 27ms-1 in 8.1s.Calculate the average rate at which kinetic energy is supplied to the car during the acceleration.

    asked on March 15, 2014
  5. WTI

    1LB of ice at 20 deg f exerts its force downward. after the ice has absorbed 200 BTU's what direction will the force be exerted? After absorbing 2000 BTU's what direction will the force be exerted?

    asked on March 23, 2013
  6. physics

    A phone cord is 4.75 m long. The cord has a mass of 0.200 kg. A transverse wave pulse is produced by plucking one end of the taut cord. The pulse makes four trips down and back along the cord in 0.900 s. What is the tension in the cord?

    asked on February 1, 2011
  7. physics

    A phone cord is 4.75 m long. The cord has a mass of 0.200 kg. A transverse wave pulse is produced by plucking one end of the taut cord. The pulse makes four trips down and back along the cord in 0.900 s. What is the tension in the cord?

    asked on February 1, 2011
  8. physics

    A cork on the surface of a pond bobs up and down two times per second on ripples having a wavelength of 7.30 cm. If the cork is 12.0 m from shore, how long does it take a ripple passing the cork to reach the shore?

    asked on January 30, 2011
  9. Mathematics

    Factorize completely: 3x²-2xy-y

    asked on May 17, 2020
  10. physics

    The frequency of vibration of an object-spring system is 8.00 Hz when a 3.00 g mass is attached to the spring. What is the force constant of the spring?

    asked on February 2, 2011
  11. Life sciences

    Two controlled (fixed )variables

    asked on August 26, 2019
  12. math

    Calculate the value of the following, without using a calculator, leaving answers, where necessary, in simplified surd form: (a). sin 120° + tan 300° (b). tan 315° × cos330° / sin(-240°) × sin 570°

    asked on October 14, 2018
  13. c++ programming language

    Write an algorithm,flow chart, psuedo codes and finally a c++ codes that will accept exams scores for 5 users.

    asked on February 12, 2017
  14. math

    A girl was born 25 years after her mother. What fraction of her mother's age will the girl be at the age of 10

    asked on May 8, 2016
  15. math

    at what rate converted every 3 months will a sum of money triple itself in 18 years and 6 months.

    asked on January 24, 2016
  16. math

    Is 3/7 greater or less than 15/56

    asked on September 25, 2014
  17. Probabilty

    Biased coin has a 0.4 probability of landing on tails. The random variable x, based on a single toss of the coin, is defined as follows: x=0 if heads appears; x=1 if tails appears. What Is the mean value of X? Is it . 0.3 .4 .6 .5 .7

    asked on November 28, 2012
  18. Calculus

    What is the sum of all the odd #s between 100 & 200??

    asked on November 28, 2012
  19. math

    a spinner with 8 sections has 2 blue and 1 yellow section. What 's the (p) of one spin landing on blue and one spin landing on yellow. The answer is 1/16 Why?

    asked on January 27, 2012
  20. math

    if Charlie earns 3/4 of what joan earns. and together they earn 490.00 a week. How much does charlie make?

    asked on October 4, 2011
  21. Water at the top of Niagara Falls has a temperatur


    asked on February 15, 2011
  22. math

    how mant 5ths are in the number 1

    asked on January 2, 2011
  23. science

    Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard

    asked on August 26, 2010
  1. Math

    This is so hard my mom is having trouble uhhhhjj

    posted on December 4, 2019
  2. college English

    Yes, thank you. Agreed.

    posted on August 9, 2019
  3. math

    I need your response

    posted on October 14, 2018
  4. physics

    how can i answer this question?

    posted on October 3, 2018
  5. math


    posted on June 22, 2016
  6. math

    25 ft

    posted on December 14, 2015
  7. MATH

    A=-4x^2+40x By completing the square A= -4(x^2-10x+25)+100 A= -4(x-5)^2+100 Vertex is (5,100) Max is 100 ft

    posted on December 3, 2015
  8. Math

    idgaf and idk

    posted on August 31, 2015
  9. Statistics

    fach u

    posted on May 5, 2015
  10. physics

    Well you see the coefficient of friction is zero and the air resistance is too strong thus the projectile would go the speed of light and end the entire human race as we know it would come to an end. It would be better to not accelerate that object.

    posted on December 31, 2014
  11. electrical circuit

    i've gotten (a) 0.72 to 1.6 amp; (b)17.7 ohms

    posted on August 24, 2014
  12. German

    So, although my German is rather rusty, here is what I can do; Mein guter Freund heißt Meaghan. Sie ist intelligent und freundlich kleinen tolerant. Sie hat lange blonde Haare. Sie spricht und liest Spanisch. Ich gehe mit Freunden herumhägen das

    posted on December 9, 2012
  13. Literary Analysis and Composition

    Works such as "To Build a Fire" gave Naturalist writers such as Jack London a platform to argue that

    posted on January 21, 2011
  14. 8th Grade Science

    AT +04C

    posted on August 5, 2009