Questions Asked on
May 12, 2018

  1. physics

    A piece of copper of mass 300 g at a temperature of 950 degree Celsius is quickly transferred to a vessel of negligible thermal containing 250 g of water at 25 degree Celsius. If the final temperature of the mixture is 100 degree Celsius calculate the mass

    asked by rita
  2. Social Studies

    what is one example if the way a rise in productivity during the 1950s improved the standard of living in the united states? A.It gave workers more time off. B.It led to a sharp increase in urbanization. C.It led to the end of discrimination in the United

    asked by Kool Kid
  3. Science

    The strength of the force of gravity between two objects is determined by which of the following factors? Select all that apply. A. the masses of the objects B. the distance between the objects C. the volumes of the objects D. the surface area of the

    asked by Boi
  4. Science

    Explain the value or importance of using the International System of Units when describing motion. Provide an example that supports your reasoning. PLZ PLZ HELP ME!

    asked by Mary4everlife
  5. chem

    3. Which plastic do you think could best contain extremely corrosive material? Why? Choices: PET or PETE, HDPE, PVC, LDPE, PP, PS.

    asked by help pls!!!!!!!!
  6. physics

    Describe an experiment to determine the boiling point of a small quantity of a liquid

    asked by rita
  7. Math

    Jennifer writes the letters M-O-N-T-A-N-A on cards and then places the cards in a hat. What is the probability of picking an M? a. 1/6 b. 1/7**** c. 6/1 d. 7/1

    asked by Sid.V
  8. physics

    Pls help pls help me solve. Dry steam at 100 degree Celsius is bubbled into 500 g of water originally at 20 degree Celsius. What will be the temperature of the water after 30 g of steam has condensed? ( specific heat capacity of water =4200,specific latent

    asked by rita
  9. physics

    What mass of ice at -14 degree Celsius will be needed to cool 200 cm of an orange drink from 25 degree Celsius to 10 degree? (specific latent heat of fusion of ice=336000,specific heat capacity of ice=2100 specific heat capacity of water=4200

    asked by rita
  10. physics

    Pls help me. Explain the following a. When methylated spirit is poured on the skin, it has cooling effect, b. A piece of ice at 0 degree Celsius cools a drink more effectively than the same mass of cold water at 0 degree Celsius, c Ice floats on water, d.

    asked by rita
  11. Chemistry

    Determine the hydronium ion concentration in a solution that is 0.00039 M HCl. Answer in units of M.

    asked by Kiara
  12. Science

    Discuss the different types of energies possessed by a flowing liquid. Derive an expression for the total energy per unit mass of a flowing liquid

    asked by Nurjamal
  13. Language Arts

    What is the genre of "Happiness Is Charming Charlie Brown at Orlando prep

    asked by Elizabeth
  14. maths

    Using a protector and a ruler ,draw ∆ABC ,with A^=35°,AC =6cm and C^=65°.draw a second triangle.∆GHI,with G^=80° ,GH=9cm and H^=35°.

    asked by Thandiwe dlamini
  15. Math-Limits

    How do we evaluate limit of, lim x-> 0 [ln(x+1)/( (2^x) - 1)] I tried using the substitution x+1 = e^k , when x tends to 0 so does k, which gave out, lim k->0 [ k/((2^((e^k) - 1)) -1 ) ] which I simplified into( for the ease of use let e^k =a) lim k->0

    asked by Ashley
  16. Algebra

    Riley uses the equation y = 10x to calculate the amount of money he earns after working x hours. The table below shows the amount of money Mandy earns after working different numbers of hours. Hours Worked Amount Earned 9 $81 12 $108 15 $135 Which

    asked by Julieanna
  17. Physics

    Anybody help me with this? A disk with mass m = 6.5 kg and radius R = 0.41 m hangs from a rope attached to the ceiling. The disk spins on its axis at a distance r = 1.4 m from the rope and at a frequency f = 19.4 rev/s (with a direction shown by the

    asked by katie
  18. Maths

    Using all the digits 1,2 and 9 write the smallest possibl 6 digit number where digits may be repeated

    asked by Prateek patel
  19. Chemistry

    Determine the [OH−] in a 0.42 M solution of HClO4

    asked by Kiara
  20. physics

    Pls help me God will bless you all. A piece of copper ball of mass 20 g at 200 degree Celsius is placed in a 50 g of water at 30 degree Celsius, ignoring heat losses, calculate the final steady temperature of the mixture. Specific heat capacity of

    asked by rita
  21. Math

    which one of the following gives the distance between the numbers 11 and -8? -19, -3, 19, 3 How do you figure out these problems??

    asked by ana
  22. Chemistry

    Identify the following as a complex ion or coordination compound: 1) [Co(NH3)3Cl3] 2) [Co(NH3)3Cl2]Cl 3) [Ni(NH3)4]^2+ 4) [Cu(NH3)4]^2+

    asked by Yui
  23. Geometria

    Two sides of a triangle are 11cm and 16cm what is the range of possible lengths for the third side

    asked by Yeni
  24. physics

    What are the differences between evaporation and boiling

    asked by rita
  25. English

    What type of literacy device is being used here and how ? “Each time I rise to my feet I am knocked to the ground”

    asked by Jennifer
  26. history

    Hi, I have a history essay coming up with the question: Explain Cause and Effect relationship between WW2, Cold War, and Civil Rights. I was wondering if anyone had any recommendations for things to make sure to include in the essay or links that will help

    asked by joy
  27. algebra

    2 times the sq rt of 5 + 3 times the sq rt of 7 ^2

    asked by mary
  28. Physics

    For what combination of parallel and series resistors will resistors of 25 ohms, 100 ohms, 50 ohms, and 50 ohms have a total resistance of 62.5 ohms?

    asked by Anonymous
  29. History

    What was city life like for poor Romans?

    asked by boop
  30. Chemistry

    How we differentiate bw citric acid and tartaric acid by identification test?

    asked by Rao waqar
  31. Anatomy

    Why is splenic artery a subject to erosion by penetrating ulcer of posterior wall of stomach into lesser sac ??

    asked by Sohmay
  32. Math

    The flask consist of a cylindrical part and a frustum of a cone. The diameter of the base is 10 cm while that of neck is 2 cm. The vertical height of the flask is 12 cm. (a) the slant height of the frustum part; (b) the slant height of the smaller cone

    asked by M
  33. Language Arts

    What are the code words for language arts 6B. I have three already. Aerosmith Journey Heart Does anybody have the rest? Thanks

    asked by Ming
  34. Math

    Sulfuric acid is diluted in water to make new mixtures. In one container, 72 ml of a 14% acid solution and, in another container, 64 ml of a 31$ acid solution. The contents of the containers are mixed together? What's the percentage strength of the acid in

    asked by Alex
  35. maths

    Heat energy

    asked by rita
  36. Math

    The curve y=x^3-3x^2-8x+4 has tangent L at point P (-1,8). Given that the Line M is parallel to L and is also a tangent to Q show that the shortest distance between L and M is 16 root 2 Sorry This is the correct question

    asked by Jodis
  37. Physics

    I have to fill the following table, I know it should only be applying formulas, but I'm not sure which formulas should I apply in every section. I would like to know which is the difference between the conductivity in Siemens per meter and the conductivity

    asked by Josh Garder
  38. physics

    How can I change each of Normal force, Gravity and Friction force?

    asked by pipe
  39. maths

    Sequence

    asked by rita
  40. Math

    The curve y=x^3-3x^2-8x+4 has tangent L at point P (1,-8). Given that the Line M is parallel to L and is also a tangent to Q show that the shortest distance between L and M is 16 root 2 Thanks

    asked by Jodis
  41. science

    what does 4s^2 mean

    asked by john