Questions Asked on
May 13, 2018

  1. Physics

    a metal ball of radius R is placed concentrically inside a hollow metal sphere of inner radius 2R & outer radius 3R. The ballis given a charge +2Q and the hollow sphere a total charge -Q. Calculate. electrostatic potential energy of system.???

    asked by Star
  2. Life orientation

    Identity and explain four type of risk behaviour amongst teenagers by using an example

    asked by Mashao jessica
  3. Math

    An Ice cream shop offers the following toppings: chocolate chips strawberry sprinkles caramel hot fudge whipped cream gummy bears If a sundae must have exactly four topping how many different sundaes can you make? 15 24 This one 12 18 Eric has two

    asked by Loomin
  4. Math

    The sample space for a roll of two number cubes is shown in the table. (1,1)|(1,2)|(1,3)|(1,4)|(1,5),(1,6) (2,1)|(2,2)|(2,3)|(2,4)|(2,5)|(2,6) (3,1)|(3,2)|(3,3)|(3,4)|(3,5)|(3,6) (4,1)|(4,2)|(4,3)|(4,4)|(4,5)|(4,6) (5,1)|(5,2)|(5,3)|(5,4)|(5,5)|(5,6)

    asked by Loomin
  5. Geography

    What will happen when we move vertically upwards the earth?

    asked by Anonymous
  6. physics

    15.1 1 Section L I A 50 mL beaker is filled to the brim with mercury. How much does the mercury in the beaker weigh?

    asked by ibrahim
  7. physics

    Explain why ice is formed on the aluminium lumps and not on the walls of the beaker

    asked by rita
  8. Algebra

    List the sides in order from shortest to longest in xyz with m

    asked by Yeni
  9. physics

    Explain why food can be cooked more rapidly by boiling it in salt water than by boiling it in pure water

    asked by rita
  10. physics 11

    An arrow is shot horizontally towards a target 20 m away. In traveling the first 5 m horizontally, the arrow falls 0.2 m. In traveling the next 5 m horizontally, what will the arrow additionally fall?

    asked by Annie
  11. physics

    Explain the statement: the saturation vapour pressure of water at 60 degree Celsius is 149.4 mm of Mercury. Thanks

    asked by rita
  12. physics

    A concrete slab of mass 400 kg accelerates down a concrete slope inclined at 35°. The u kinetic bn the slab and slope is 0.60. Determine the acceleration of the block.

    asked by Heran
  13. maths

    the distance from you to the base of a tower on top of a hill is 2760 ft. the angle of elevation of the base is 26 degrees the angle of elevation of the top of the tower is 32 degrees.find the nearest foot the height of the tower above the top of the hill

    asked by adiba
  14. maths

    We define two numerical operations labelled T and R. The effect of T is to add 1 to a number. For example, if we apply the operation T to the number 2 three times in a row, we obtain 3, then 4, then 5. The effect of R is to find the negative reciprocal of

    asked by bucky
  15. physics

    Two blocks with masses 5 kg and 2 kg are connected (via frictionless, massless pulleys) by a light, inextensible string, as shown. There is no friction between the 5 kg block and the horizontal surface on which it moves. The tension T in the string

    asked by Anonymous
  16. physics

    How would you determine the value of the specific latent heat of steam in the laboratory? What precautions are necessary to obtain an accurate results

    asked by rita
  17. physics

    What is meant by the statement that the specific latent heat of steam is 2260000jkg

    asked by rita
  18. physics

    Describe an experiment to determine the saturation vapour pressure of water in the temperature range 25 degree Celsius to 70 degree Celsius. Sketch the curve you would expect to obtain

    asked by rita
  19. Physics

    if water rises in a capillary tube 5.8cm above the free surface of the outer liquid. what will happen to the mercury level in the same tube when it is placed in a dish of mercury?(diagram is also necessary)

    asked by Kenry
  20. math

    Find the sum of the first 15 terms of the geometric sequence. ∞ Σ 3n − 1 n = 1

    asked by ben
  21. Algebra

    A total of 23,456.78 dollars was invested in two funds paying 2½ percent and 1¾ annual interest. The combined interest for the year percent is 368 dollars and 50 cents. Part A: How much of the 23,456.78 dollars is invested in 2½ percent fund? Part B:

    asked by Pat
  22. math

    hello, im in 3rd grade and i need help on these 2 questions. 1) What is 3 as a percentage of 10? 2) The nth term rule for a sequence is 2n+3. Write the first 4 terms in this sequence. is question 1 30% thanks if you reply

    asked by jade
  23. maths

    A landscaper sights the top of a tree at a 68 degree angle.she then moves an additional 70 feet directly away from the tree and sights the top at a 43 degree tall is the tree to the nearest tenth of a foot.

    asked by adiba
  24. Maths

    A certain number of children shared 42 sweets,each child got 8 sweet how many children shared the sweet?

    asked by Joseph
  25. chemistry

    0.1 mol of HCl is added to 1 L of water. What is [H+] and [OH-]? Thank you!

    asked by Laura
  26. world history

    Which key factor does not affect the climate in Latin America’s mountain regions?

    asked by ABdull
  27. chemistry

    How much 0.020 M Ba(OH)2 is need to titrate 25.0 mL of 0.0030M HCl to the endpoint? I'm so confused; please help!

    asked by Ashley
  28. Chemistry

    5.00 g of (Zn) was added to 0.800 moles of nitrate ion in acidic media. Calculate the volume of (NO) gas collected at STP. Zn(s) + No3^-(aq) ---------> ZN^2+(aq) + NO(g) (Must balance the reaction first). Thank you.

    asked by Dalal
  29. physics

    The mass of a rocket car plus fuel is 2,000 kg. The rocket car starts from rest. The engine expels fuel (in the form of exhaust) over a period of 8 seconds. The exhaust has a velocity of 1,000 m/s due west, and the velocity of the rocket after 8 seconds is

    asked by Lauren
  30. physics

    Pls is specific capacity of tin 226

    asked by mary
  31. geography

    What is glacier

    asked by rita
  32. computer

    What is the formal name of Internet

    asked by rita
  33. Business writing

    Hello! can anybody help me for my assignment about request letter.... Assumed that your manager has asked you to write a request letter to another professional from another company. you will be requesting that this person guest speak at your organization

    asked by Ann08
  34. multimedian

    you are given chance to be a designer of any company of your dreams and the condition is to make a description of the design process you will follow to get the two dimension art for the company about any topic of your choice. Competence criteria are as

    asked by calvin


    asked by MARVELLOUS
  36. math

    Find the sum of the infinite geometric series, if possible. 12 + 10 + 25/3 + 125/18 + ...

    asked by ben
  37. math

    Find the sum. (Round your answer to two decimal places.) 5 Σ 200(1.09)^n n = 0

    asked by ben
  38. chemistry

    How can Ka or Kb be used to determine if an acid is strong or weak?

    asked by Ashley
  39. Physics

    In a steady flow system crude oil of density 1200 kgm-3 flows at the rate of 275kg/min through a horizontal pipeline of varying cross-sectionional areas 0.068 and 0.083m2 respectively. Determine the absolute pressure between X and Y.

    asked by Rooney