Cylinder

Newest questions posted by Cylinder
  1. Physics as repost please answer and help

    Silver plating: A student attempts the process of silver plating to determine the mass of a silver atom. a series of objects are measured, then electroplated for a measure period of time, while maintaining a steady current through a solution of silver
  2. physics as

    the figure below shows the graph of force,F (y axis)acting on a trolley of 0.4kg against time,t (x axis) 20--------- ........._-- ........._...-- ........._....--- ........._......--- ........._.......----- 0........5............9 The velocity of the
  3. As physics

    Please help and do it step by step all parts of questions and use: T = time(s) I=current (amps) Q=net charge on object (Coulombs) N=no electrons (and write if added or removed from object and how) E=elementary charge Calculate the number of free electrons
  4. As physics

    the figure below shows the graph of force,F (y axis)acting on a trolley of 0.4kg against time,t (x axis) 20--------- ........._-- ........._...-- ........._....--- ........._......--- ........._.......----- 0........5............9 The velocity of the
  5. As physics

    Silver plating: A student attempts the process of silver plating to determine the mass of a silver atom. a series of objects are measured, then electroplated for a measure period of time, while maintaining a steady current through a solution of silver
  6. As Physics

    Please help and do it step by step all parts of questions and use: T = time(s) I=current (amps) Q=net charge on object (Coulombs) N=no electrons (and write if added or removed from object and how) E=elementary charge Two copper wires of diameter 1 mm and 2
  7. As Physics

    Please help and do it step by step all parts of questions and use: T = time(s) I=current (amps) Q=net charge on object (Coulombs) N=no electrons (and write if added or removed from object and how) E=elementary charge Calculate the number of free electrons
  8. chemistry

    Iodide and diamond crystals both contain covalent bonds and yet the physical properties of their crystals are very different. Their melting points are 387K and 3827K respectively. State this type of structure present in each case and explain why the
  9. chemistry

    Carbon tetrachloride, CCl4 is used as a solvent and a coolant. Its boiling point I s-22.9 degrees. By considering the intermolecular forces involved discuss whether you expect the boiling point of CHCL3 to be greater or lower than tis value. [6] Please
  10. physics As

    Please help and do it step by step all parts of questions and use: T = time(s) I=current (amps) Q=net charge on object (Coulombs) N=no electrons (and write if added or removed from object and how) E=elementary charge A piece of fuse wire has a diameter of
  11. physics As

    The current carriers in a piece of semiconducting material have a charge of 1.6 x 10^-19C. Calculate the number of charge carriers entering the material per second when the current is 3 microamps so 3 x 10^-6 amps. ? Please help and do it step by step all
  12. As physics

    Please help and do it step by step all parts of questions and use: T = time(s) I=current (amps) Q=net charge on object (Coulombs) N=no electrons (and write if added or removed from object and how) E=elementary charge Two copper wires of diameter 1 mm and 2
  13. As physics

    Please help and do it step by step all parts of questions and use: T = time(s) I=current (amps) Q=net charge on object (Coulombs) N=no electrons (and write if added or removed from object and how) E=elementary charge Calculate the number of free electrons
  14. As physics

    Please help and do it step by step all parts of questions and use: T = time(s) I=current (amps) Q=net charge on object (Coulombs) N=no electrons (and write if added or removed from object and how) E=elementary charge A piece of fuse wire has a diameter of
  15. As physics

    The current carriers in a piece of semiconducting material have a charge of 1.6 x 10^-19C. Calculate the number of charge carriers entering the material per second when the current is 3 microamps so 3 x 10^-6 amps. ? Please help and do it step by step all
  16. As physics

    change in mass___total charge_____no of elect for each of______delivered by_______rons pass objects_________circuit(eachtest)_(thrcathod) _____________________________________________0.14____________144__________9 x 10^20___
  17. Damon/BobPursley/Physicstutor/whichoneisright

    Q11.The table below shows how the braking distance x for a car depends on its initial speed u. | u / ms-1 | 5 | 10 | 20 | 40 | | X / M | 2 | 8 | 32 | 128 | The relationship between x and u is: doubling speed increases distance by a factor of 4. i)The
  18. physics

    To calculate the young modulus uncertainty do you add together the percentage uncertainty of strain and stress and if not then what do u do. Please dont send websites just tell and help me out.
  19. Physics

    Q11.The table below shows how the braking distance x for a car depends on its initial speed u. | u / ms-1 | 5 | 10 | 20 | 40 | | X / M | 2 | 8 | 32 | 128 | The relationship between x and u is: doubling speed increases distance by a factor of 4. i)The
  20. As physics

    Q11.The table below shows how the braking distance x for a car depends on its initial speed u. | u / ms-1 | 5 | 10 | 20 | 40 | | X / M | 2 | 8 | 32 | 128 | The relationship between x and u is: doubling speed increases distance by a factor of 4. i)The
  21. physics As

    The table below shows how the braking distance x for a car depends on its initial speed u u / ms-1 5.0 10 20 4 x / m 2.0 8.0 32 128 the reaction time of a driver is 0.60s. Calculate the sopping distance of the car when u= 30ms-1. The mark scheme says:
  22. As physics

    There is a right angle triangle: -.- -...- -......- -.........- T (wire) -............- -...............- ------------------ 30 degrees ....--.....--.....rod ....--.....--..... ....--.....--..... ....---------..... ....-.......-..... ....-.......-.....
  23. physics

    do these cancel out and why/why not? S^2 = S^2 S^-2 = S^2
  24. As physics

    A 2.0 rigid rod with negligible weight is subject to forces in three different ways as shown in diagrams 1-3 below. diagrams: 1- middle point: 2.0 N distance on both sides: 1.0 m apart forces below at the end of each side: 1.0 N 2- distance on both sides:
  25. As physics

    (As physics working out please) (SI UNITS) Which physical quantity has the same base units as energy? SHOW ALL WORKING OUT! A:Moment B:Momentum C:force D:pressure
  26. As physics

    What does decreased in MAGNITUDE mean?
  27. As physics

    Describe how the vertical component of the velocity of the water varies form point X to point Z? Image with a flat horizontal line with a curve on top (beg curve: X, top middle curve: Y, End bottom curve: Z) Mark scheme Answer: decreases from x to y
  28. As physics

    How is kinetic energy lost on impact to the ground?
  29. As physics

    The table below shows how the braking distance x for a car depends on its initial speed u u / ms-1 5.0 10 20 4 x / m 2.0 8.0 32 128 the reaction time of a driver is 0.60s. Calculate the sopping distance of the car when u= 30ms-1. The mark scheme says:
  30. As physics

    The drag force acting on a car travelling at a speed v is given by the equation F=kAv^2 Where A is the area of the front of the car. Show that a suitable unit for the quantity k is kgm-3. Mark scheme answer: F= kgms-2 or A=m2 V=ms-1 Which is K=kgm-3 I am
  31. As physics

    In a hockey match a hockey ball is hit 18m from the front of the goal. The ball leaves the hockey stick with initial velocity v at angle theta to the horizontal ground. The ball passes over the goal at a maximum height of 2.0m. The initial vertical
  32. As physics

    Could a physics expert please help out with my other questions please?
  33. As physics

    In a hockey match a hockey ball is hit 18m from the front of the goal. The ball leaves the hockey stick with initial velocity v at angle theta to the horizontal ground. The ball passes over the goal at a maximum height of 2.0m. The initial vertical
  34. As physics

    The drag force acting on a car travelling at a speed v is given by the equation F=kAv^2 Where A is the area of the front of the car. Show that a suitable unit for the quantity k is kgm-3. Mark scheme answer: F= kgms-2 or A=m2 V=ms-1 Which is K=kgm-3 I am
  35. As physics

    The table below shows how the braking distance x for a car depends on its initial speed u u / ms-1 5.0 10 20 4 x / m 2.0 8.0 32 128 the reaction time of a driver is 0.60s. Calculate the sopping distance of the car when u= 30ms-1. The mark scheme says:
  36. As physics

    How is kinetic energy lost on impact to the ground?
  37. As physics

    What does collision is INELASTIC mean?
  38. As physics

    Image with a flat horizontal line with a curve on top (beg curve: X, top middle curve: Y, End bottom curve: Z) Describe how the vertical component of the velocity of the water varies form point X to point Z? Mark scheme Answer: decreases from x to y
  39. As physics

    What does decreased in MAGNITUDE mean?
  40. As physics

    (As physics working out please) Which physical quantity has the same base units as energy? SHOW ALL WORKING OUT! A:Moment B:Momentum C:force D:pressure
  41. physics

    A 2.0 rigid rod with negligible weight is subject to forces in three different ways as shown in diagrams 1-3 below. diagrams: 1- middle point: 2.0 N distance on both sides: 1.0 m apart forces below at the end of each side: 1.0 N 2- distance on both sides:
  42. physics

    an ostrich can run a maximum speed of 70km per hour. You have to convert the 70km to 70000m. you have to convert the per hour part too and 1hr =60 min. Somehow the time becomes 3600, could someone please tell me how?