Physics(Please help, thank you)

I had to do an experiment where a tiny steel ball was measured using a micrometer. There was then a series of calculations that needed to be completed and then a percent error had to be calculated. I think that my data may be incorrect or maybe I am just not doing the calculations correctly but my percent error keeps coming out to be very high.

To start off I had to use the micrometer to find the diameter D(mm) of the steel ball. 5 trials were completed. For the first trial I got 15.90 mm. The volume V=1/6(pi)D^3 had to be calculated next so to do this I plugged 15.9 into the equation 1/6(3.14)(15.90^3) and got 2019. For each trial I plugged my D value into the equation and then to calculate the average Volume I added all the numbers up and divided by 5.

So far before I continue can you please tell me if I did this correctly. Thank you for your help!!

asked by Hannah
  1. 1. Find the average magnitude of diameter
    (D1+D2+D3+D4+D5)/5 ={D}

    2. ΔD1 =|{D}-D1|
    ΔD2=|{D}-D2|

    ΔD5 =|{D}-D5|
    Average absolute error is
    {ΔD}= (ΔD1+,,,+ ΔD5)/5.

    3. The relative error is {ΔD}/{D}
    4. Since V~D³ the error of your result = 3• {ΔD}/{D}.
    If you want it in %, multiply by 100.

    posted by Elena

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics(Please help, thanks)

    An experiment was done where a tiny steel ball was measured with a micrometer. I know I already posted a question about this before and was given a respond but after trying to fix my answers I am still lost. If someone could
  2. Physics(Please check)

    An experiment was done where a tiny steel ball was measured with a micrometer. I know I already posted a question about this before and was given a respond but after trying to fix my answers I am still lost. If someone could
  3. Biology

    y does the ocular micrometer need to be calibrated with a stage micrometer? a. The stage micrometer is a slide that has a defined scale and the distances between lines don’t change when viewed at different magnifications, unlike
  4. Physics

    In an inelastic collision, a steel ball of mass 200 g was hit hard into a large ball of dough of mass 700 g. The velocity of the steel ball was 25m/s. After the collision, the steel ball was stuck in the dough, and this combined
  5. science

    you have a ball of steel and a ball of iron both of the same volume. The ball of of steel has a larger mass. Is it denser, less dense, or does it have the same density as the ball of iron. Explain.
  6. science

    you have a ball of steel and a ball of iron both of the same volume. The ball of of steel has a larger mass. Is it denser, less dense, or does it have the same density as the ball of iron. Explain.
  7. Chemistry

    In 1909, Robert Millikan performed an experiment involving tiny, charged drops of oil. The drops were charged because they had picked up extra electrons. Millikan was able to measure the charge on each drop in coulombs. Here is an
  8. physics

    A 8.5 kg steel ball, travelling left to right at 12 m/s, undergoes an elastic collision with a 5 kg steel ball at rest. To the nearest Joule, what is the Total Kinetic Energy of the two balls after collision? ------- If the first
  9. Exponets help quick

    What is the simplified form of this expression? 5x(2x(2 <<<is a exponent to it is tiny 10x(tiny 3 20x (tiny 2**** 10x(tiny 2 100x(tiny 4
  10. As Physics

    Motion and Projectiles Homework-Due tommorow Extended Writing Task: Freefall Two identical steel balls are released from rest above cylinders containing oil as shown in the diagram below.The balls travel vertically until they

More Similar Questions