cylinder

Most popular questions and responses by cylinder
  1. 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.

    asked on December 7, 2017
  2. 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

    asked on November 7, 2017
  3. 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

    asked on November 9, 2017
  4. 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

    asked on November 9, 2017
  5. 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:

    asked on November 9, 2017
  6. 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

    asked on December 14, 2017
  7. 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:

    asked on November 7, 2017
  8. 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

    asked on January 4, 2018
  9. 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?

    asked on November 7, 2017
  10. 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

    asked on December 5, 2017
  11. 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

    asked on December 14, 2017
  12. 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

    asked on December 7, 2017
  13. 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

    asked on December 7, 2017
  14. 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:

    asked on December 4, 2017
  15. 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

    asked on January 8, 2018
  16. 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

    asked on January 8, 2018
  17. 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

    asked on January 4, 2018
  18. 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

    asked on December 12, 2017
  19. 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___

    asked on December 12, 2017
  20. 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

    asked on November 9, 2017
  21. 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

    asked on November 7, 2017
  22. 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

    asked on January 4, 2018
  23. 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

    asked on December 14, 2017
  24. As physics

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

    asked on November 9, 2017
  25. 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

    asked on December 14, 2017
  26. 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:

    asked on November 9, 2017
  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

    asked on November 9, 2017
  28. 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

    asked on November 7, 2017
  29. As physics

    What does collision is INELASTIC mean?

    asked on November 7, 2017
  30. 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:

    asked on November 7, 2017
  31. 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

    asked on December 12, 2017
  32. 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

    asked on December 12, 2017
  33. physics

    do these cancel out and why/why not? S^2 = S^2 S^-2 = S^2

    asked on November 9, 2017
  34. As physics

    What does decreased in MAGNITUDE mean?

    asked on November 9, 2017
  35. As physics

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

    asked on November 9, 2017
  36. As physics

    How is kinetic energy lost on impact to the ground?

    asked on November 7, 2017
  37. 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

    asked on November 7, 2017
  38. As physics

    What does decreased in MAGNITUDE mean?

    asked on November 7, 2017
  39. 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

    asked on January 4, 2018
  40. 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

    asked on January 4, 2018
  41. 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

    asked on December 12, 2017
  42. As physics

    How is kinetic energy lost on impact to the ground?

    asked on November 9, 2017
  1. physics as

    no its 10-7 as in it equals to 3 AND you minus it, its not a power. Please post hrelp with this in mind

    posted on January 8, 2018
  2. Physics as repost please answer and help

    You said: "tap water" but more likely, what are the units for the accepted and the measured? I said: I dont know it doesnt say but those are the 2 values for a single silver atom if that helps you figure out the units. you said: No, I know the units, the

    posted on January 8, 2018
  3. As physics

    So is all this what i should right? i dunt know which bit is relevant as so much stuff comes up and i dont know what to link and what is required of me to write, now that i have given it a go could you please help

    posted on January 5, 2018
  4. As physics

    Thank you so much both of you really helpful!! :)

    posted on January 5, 2018
  5. As physics

    I dont know what to link or write to answer the question, i did your research task but am still confused

    posted on January 4, 2018
  6. As physics

    Lead pipes. For many centuries, water pipes were made of lead, because of its ease of processing and durability. ... Most of the lead pipes that exist today are being removed and replaced with the more common material, copper or some type of plastic.

    posted on January 4, 2018
  7. As physics

    nothing comes up useful when i write:why is the mass of a silver atom higher than expected and im not sure what to write please help me more

    posted on January 4, 2018
  8. As physics

    1) Tap water is water supplied to a tap. Its uses include drinking, washing, cooking, and the flushing of toilets. 2) Today, most plumbing supply pipe is made out of steel, copper, and plastic; most waste (also known as "soil") out of steel, copper,

    posted on January 4, 2018
  9. As Physics

    in which wire will the electrons move faster and why?

    posted on January 4, 2018
  10. As Physics

    please help

    posted on January 4, 2018
  11. As physics

    i figured out that f x change in t =change in p is the equations used and nowi understand that bit so it became: change in momentum= 20 x 5=100 change in momentum= 1/2(20x4)=40 i just dont get the 10-3 bit

    posted on January 4, 2018
  12. As physics

    The "10-3" bit especially confuses me as i dont know where those number came from and wat it is for/ wat equation

    posted on January 4, 2018
  13. As Physics

    i cant find the numbers for the equation yo gave me "NUMBER electrons per lenth=electron dinsity)*area"

    posted on January 4, 2018
  14. As Physics

    is there a way to work this out?

    posted on January 4, 2018
  15. As physics

    I dont know it doesnt say but those are the 2 values for a single silver atom if that helps you figure out the units.

    posted on January 4, 2018
  16. Physics

    and one of the options is right so do that working out to find out which one

    posted on January 4, 2018
  17. Physics

    54(9.8*sin15+1.2) will show you the option it is

    posted on January 4, 2018
  18. Physics

    Choose from the options below:( to get you thinking) A 202 N B 222 N C 242 N D 262 N

    posted on January 4, 2018
  19. math

    Given, Diameter = 21m, cost of the rope = Rs 4 per meter, length of the rope required to fence the garden two round=?, Cost of the rope = ? The length of rope required = 2 × circumference. Circumference = 2 π r = π D = (22/7) × 21 = 66 m Therefore,

    posted on January 4, 2018
  20. Science

    dGorxn = (n*dGo products) - (n*dGo reactants

    posted on December 14, 2017
  21. trigonometry

    θ = s/r = (6 m)/(5/2 m) = 12/5 radians = 2.4 radians r = s/θ = (60 ft)/(3π/2) = 40/π ft ≅ 12.732 ft

    posted on December 14, 2017
  22. As physics

    help please!

    posted on December 13, 2017
  23. Science

    How old the object containing the element is.

    posted on December 12, 2017
  24. Damon/BobPursley/Physicstutor/whichoneisright

    This is the clearest explanation given for this thread thank you. But may I ask what equation you used at the beginning as I can’t seem to find it when I searched it online but at first I thought it was d=vt but b=velocity isn’t squared in this

    posted on December 8, 2017
  25. Physics

    plz answer

    posted on December 7, 2017
  26. Physics

    i also dont get how to work out damons last line if his is right

    posted on December 7, 2017
  27. Physics

    Damon said: v = Vi + a t where t is AFTER 0.6 s v = 30 + a t so x = Xi + Vi t + (1/2) a t^2 a will be negative of course Xi is 18 when t = 0 x = 18 + 30 t + (1/2) a t^2 -i dont know what xi means -if this wiill result in yuor answer or the mark scheme

    posted on December 7, 2017
  28. Physics

    Please tell me what you think of the mark scheme answer what they did and if now looking at this mark schee answer you stillthink that it is wrong and your answer is right? just as i want to make sure my notes are right.

    posted on December 7, 2017
  29. physics

    Please just tell me if I AM right or wrong because the website wont do that. I think I: -add percentage uncertainty of stress and strain together (i think this is the total percentage uncertainty so the young modlus unceratinty??) -then i use this

    posted on December 7, 2017
  30. Physics

    Thank you, finally someone who answered, I have been waiting ages for this questions answer. So you saying that your 100 percent sure that is the answer and the mark scheme which the examiner made is wrong?? This is what the mark scheme said for braking

    posted on December 7, 2017
  31. As physics

    I reposted like you asked and i included the full question and my working out and what i need help with so pplease help

    posted on December 5, 2017
  32. math/science

    not 0

    posted on December 5, 2017
  33. math/science

    60

    posted on December 5, 2017
  34. math/science

    the cars acceleration is zero

    posted on December 5, 2017
  35. physics As

    by the wa for the table 5 is above 2 10 is above 8 andso on the space i leftr arent posted/shown

    posted on December 5, 2017
  36. physics As

    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

    posted on December 5, 2017
  37. physics As

    Please help i hvae been confused on this for ages

    posted on December 4, 2017
  38. physics As

    What i think s dunno u 30 v dunno a 9.81 t dunno someone used the equation v=u+at and s=ut+1/2at^2 if t is zero then i think v is 30 after putting the numbers in. then.. oim confused using suvat and where the numbers came from please help

    posted on December 4, 2017
  39. As physics

    ...........---y---- .........----------- ......------------------- ...-------------------------- . x----------------------------z is the picture

    posted on November 9, 2017
  40. physics

    do the same positive power 2 on both sides cancel out or the opposite - and + powers

    posted on November 9, 2017
  41. As physics

    I am in as and we dont use those symbols so im confused

    posted on November 9, 2017
  42. As physics

    and equal on both side

    posted on November 9, 2017
  43. As physics

    It looks kinda like the last image i posted but its a curve

    posted on November 9, 2017
  44. As physics

    ...........---y---- .........----------- ......------------------- ...-------------------------- . x----------------------------z

    posted on November 9, 2017
  45. As physics

    Y -- - -- --- - - ----- -- - -------------- - - ----------------- - X Z

    posted on November 9, 2017
  46. As physics

    Y - - - - - - - - - - X Z

    posted on November 9, 2017
  47. As physics

    I wrote what I do know and the caps lock is what I dont know, and that is the working out for braking distance shown above is confusing to me.

    posted on November 9, 2017
  48. As physics

    I think this is because of no movement...??

    posted on November 9, 2017
  49. As physics

    Here I've already written what I thought of the question in caps lock and the thing I dont know at the bottom.

    posted on November 9, 2017
  50. As physics

    I think magnitude means how much of something or how long the sides are or the angle.

    posted on November 9, 2017
  51. As physics

    I'm am very stuck on this one so I dont have working out and need all steps.

    posted on November 9, 2017
  52. As physics

    I know 1 is in equilibrium. 2 is not. 3 I'm not too sure about.

    posted on November 9, 2017
  53. As physics

    So would collision is ELASTIC mean: the two objects don't stick together and move with different velocities? ?????

    posted on November 8, 2017