• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month

# Measuring the density of cubes of Aluminium and Brass

Extracts from this document...

Introduction

MEASURING THE DENSITY OF A CUBE

Aim: To measure the mass and volume of an aluminium cube and a brass cube in order to find the density of each cube using the equation (density = mass/volume).

Equipment: Ruler, triple beam balance, electronic balance, measuring cylinder, aluminium cube and brass cube.

Method of measuring mass:

1. Place the aluminium cube on top of the triple beam scale.
2. Move the triple beam weights till both weights line up.
3. Record the mass of the cube.
4. Repeat steps 1-3 for brass cube.
5. Place the aluminium cube on top of the electronic scale.

Middle

53.8 +/- 0.05

58.7 +/- 0.05

Electronic scale

53.8 +/- 0.05

58.7 +/- 0.05

 Aluminium(CM) Brass(CM) Calliper 2 +/- 0.05 2 +/- 0.05 Ruler 2 +/- 0.05 2 +/- 0.05 Percentage 2.5% 2.5%

Volume:

Ruler and calliper:

Aluminium: 2cm±0.05cm per side

Percentage uncertainty =0.05/2=2.5%     2.5 X 3= 7.5%

Absolute uncertainty= 7.5% x 2= 0.15cm

Volume= 2^3=8cm^3 ± 0.15cm^3

Brass: 2cm±0.

Conclusion

Evaluation

In this experiment our results were not very accurate because of the 25% uncertainty, we could improve our precision and accuracy of our results by:

• Used different people to measure the cube in order to get a more precise result.
• Used better equipment to improve accuracy.
• Repeat the water displacement test to increase accuracy by using an average.
• Keep constant room temperature in order to keep the metal density constant.
• Try different metals to obtain a variety of results to compare.

Vibhuthi WickramagePhysicsDensity of a cube

This student written piece of work is one of many that can be found in our International Baccalaureate Physics section.

## Found what you're looking for?

• Start learning 29% faster today
• 150,000+ documents available
• Just £6.99 a month

Not the one? Search for your essay title...
• Join over 1.2 million students every month
• Accelerate your learning by 29%
• Unlimited access from just £6.99 per month

# Related International Baccalaureate Physics essays

1. ## Energy density experiment - Aim: To determine the energy density of ethanol

Calculating mass of water and uncertainties: E.g. (values from burning 0.5g of ethanol in trial 1) Table 2. Mass of water Amount of ethanol burnt (g � 0.005g) Trial Mass of water (g �0.01g) 0.5 1 176.89 2 176.89 3 176.89 1.0 1 176.49 2 176.49 3 176.49 1.5 1 177.06 2 177.06 3 176.97 2.0 1

2. ## DCP+CE Energy Density of Ethanol

formula Q = mc?t could be used where s is the constant which has 4.18JK-1g-1 value.

1. ## Energy Density of Ethanol

As the 30�C is the temperature difference, therefore the temperature difference in Kelvin will be 30K. With this information, it is possible to find out the energy density of ethanol. Energy density is amount of energy produced per kilogram. To find the quantity of thermal energy of water, Q, the

2. ## HL Physics Revision Notes

Coefficient of volume expansion: âV=(coefficient of volume expansion y) V0â(theta) The coefficient of volume expansion is the fractional change in volume per unit temperature change. Example question: The area of the oceans of the Earth is 3.6x108km2 and the average depth of water is about 3.7 km. • Over 160,000 pieces
of student written work
• Annotated by
experienced teachers
• Ideas and feedback to 