How to set up a density experiment with 10 objects?

Question

Does anyone know where to start to setting up an experiment where I would have to find the density of 10 objects and then arrange them in order from most dense to least dense. There are cubes, balls, all different shapes. What would I have to do to find the density of each? Thanks.

Answer 1

The simplest way is to use he principle of Archimedes.
First record the weight of each object.
Then place a container with water (a glass beaker?) on the pan of a digital balance and note the weight. (You can tare out the weight in some balances which helps). Tie a thin string around each object and gently lower the object into the water till it is completely immersed, with the string still held outside. Note the increase in weight in each case.

The increase in weight is equal to the volume of displaced water. So, numerically this is equal to the volume of the object. Divide the weight of each object by the increase in weight of the water with the object immersed. This will be the density.

There is a catch in the case of objects which float. The method can still be used if the object is tied with a metal wire and pushed under the water surface till fully immersed.

Answer 2

Density is mass divided by volume, so you need to determine the mass of each object. Then get a container and fill it up with a known amount of water. Put the object in the water and see how high the water rises. The difference in the volume of water at the new height and old height is the volume of the object. (The higher it rises, the more volume it has). You can then determine the density of each object.

Answer 3

You would need to know the mass of each object and the volume of each object. For "normal" shapes you could calculate volume by measuring/calculation, and for irregular shapes, you could note the difference in volume of water in a graduated cylinder before/after dropping in the object. To get density just divide the mass by the volume.

Normally density is in the units grams/cm^3 or grams/ml

Answer 4

while making use of an ND filter out you would be able to desire to have your digicam in handbook considering the fact which you would be controlling the shutter velocity. you will additionally would desire to have your digicam on a tripod. you besides would would desire to properly known the thank you to calculate the wonderful shutter velocity based on the potential of the ND filter out - the form of stops of sunshine it blocks. the suited way i comprehend to tutor that's the previous "Sunny sixteen Rule" that states: "On a sunny day set your aperture to f16 and your shutter velocity to a million/ISO." ISO one hundred f128 @ a million sec. -6 stops f90 @ a million/3 sec. -5 stops f64 @ a million/6 sec. -4 stops f45 @ a million/12 sec. -3 stops f32 @ a million/25 sec. -2 stops f22 @ a million/50 sec. -a million end f16 @ a million/one hundred sec. "Sunny sixteen" f11 @ a million/2 hundred sec. +a million end f8 @ a million/4 hundred sec. +2 stops So compose your image and examine the shutter velocity stated via the digicam's meter, make an remark of it, set up the ND filter out and then regulate the shutter velocity to seize up on the form of stops that the ND filter out blocks. The greater stops of sunshine blocked the slower the shutter velocity. purely shrink the shutter velocity via a million/2 for each end of sunshine blocked via your ND filter out.