The concept of density allows finding the density and ordering the liquids from lowest to highest they are:
Density is the relationship between mas and volume, it is one of the most used relationships in liquids,
where ρ is the density, m the mass and V the volume
Systems of units are systems of measurements where fundamental units are defined by convention and are used to be able to exchange measurements with precision and accuracy. The most widely used system today is the international measurement system (SI), let's reduce the magnitudes to this system
We use that one milliliter of water is equal to 1 cm³ of water
V = 10 cm³ ( )² = 10 10⁻⁶ m³
In this exercise they give that the volume for all the liquids are equal, the mass is a measure in a triple beam balance whose appreciation is 0.1 g = 0.1 10⁻³ kg, in the following table we find the reading of the mass for each substance
Material Mass (10⁻³ kg) Density (kg / m³)
Dish soap 9.1 910
Vegetable oil 9.5 950
Water 9.97 997
Corn syrup 14.2 1420
We calculate the density
Liquid dishwasher
ρ = 910 kg / m³
The other values are calculated in the same way and it is in the last column of the table
The independent variable in an experiment is the one that the researcher controls, in this case the volume of each sample and the dependent variable is the one that the researcher measures in this case the mass of each material.
In conclusion, using the concept of density, we can order the liquids by their density from lowest to highest they are:
Learn more about density here:
Answer:
Explanation:
Each time the work done to raise a given mass is
here we know that
now we have
since it is just 25% of actual energy consumed as we know its efficiency is 25%
so we have total energy consumed in this way
now if it took N number of times so burn the fat of a pizza then
To solve this exercise it is necessary to take into account the concepts related to Tensile Strength and Shear Strenght.
In Materials Mechanics, generally the bodies under certain loads are subject to both Tensile and shear strenghts.
By definition we know that the tensile strength is defined as
Where,
Tensile strength
F = Tensile Force
A = Cross-sectional Area
In the other hand we have that the shear strength is defined as
where,
Shear strength
Shear Force
Parallel Area
PART A) Replacing with our values in the equation of tensile strenght, then
Resolving for F,
PART B) We need here to apply the shear strength equation, then
In such a way that the material is more resistant to tensile strength than shear force.