weight
You can use a ruler to determine how long a object is
To find the weight of an unknown object using standard masses and a scale, you can use a balance scale. Place the unknown object on one side and add standard masses to the other side until the balance is achieved. The sum of the standard masses used will be equal to the weight of the unknown object. To find the weight of an unknown object using a ruler, you can use the concept of density. Measure the dimensions of the object to calculate its volume, then weigh the object to find its mass. Using the formula density = mass/volume, you can determine the weight of the object by multiplying its volume by the density of the material it's made of.
To determine if an object is charged, you can use a device called an electroscope.
Tie the unknown object and an object with a known charge to separate strings. Hold the two objects up by the strings, and bring them near each other. If the objects repel it means that the unknown object has the same charge as the known object. If they attract it means the unknown object has an opposite charge as the known object.
Scientists use the relative amount of stable and unstable isotopes in an object to determine its age.
Using just the sour taste property to identify an unknown acid is not reliable because many harmful substances also contain a sour taste. It's safer and more accurate to use laboratory tests or pH indicators to determine the identity of an unknown acid.
Use a protractor.
You can use a manometer.
A set function (or setter) is an object mutator. You use it to modify a property of an object such that the object's invariant is maintained. If the object has no invariant, a setter is not required. A get function (or getter) is an object accessor. You use it to obtain a property from an object such that the object's invariant is maintained. If the object has no invariant, you do not need a getter.
I would assume that you would use displacement to determine volume when the object is extremely complicatedly shaped.
[object Object]
yes