A science teacher gives a student four beakers, each with a different liquid inside. The table provided shows the volume of each
liquid. Students will need to measure the mass of each liquid in order to calculate the density. When the student mixes all four liquids into one beaker, each liquid separates into a different layer. Using the volume and mass, students will calculate the density of each liquid and list them in order from least dense to most dense. What is the outcome variable (dependent variable) in this experiment? Please Hurry i have until midnight of today! Thank youu so much
the volume of each liquid
the mass of each liquid
the triple beam balance used to calculate mass
the type of liquid
the volume of each liquid
the mass of each liquid
the triple beam balance used to calculate mass
the type of liquid
2 answers:
The concept of density allows finding the density and ordering the liquids from lowest to highest they are:
- dishwashing liquid < vegetable oil < water < corn syrup
- The dependent variable of the experiment is the mass of each body.
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:
- Dishwashing liquid < Vegetable oil < Water < Corn syrup
- The dependent variable of the experiment is the mass of each body.
Learn more about density here:
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Answer:
The normal force experienced by the car is approximately 8223.2 N
Explanation:
The question relates to banking of road where the centripetal force for the circular motion of the vehicle is provided by the horizontal component of the normal reaction
The mass of the vehicle that moves around the curve, m = 900 kg
The incline of the curve, θ = 20°
The speed with which the vehicle moves around the curve, v = 12.5 m/s
The radius of the curve, R = 50 meters
We have;
Where;
θ = The angle of inclination of the road = 20°
N = The normal force experienced by the car
m = The mass of the car = 900 kg
v = The velocity with which the car is moving = 12.5 m/s
R = The radius of the curve around which the vehicle moves = 50 m
The normal force experienced by the car = N ≈ 8223.2 N.