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INTERNATIONAL BACCALAUREATE ESSAYS
Measuring the density of a cube
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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
To obtain the frequency of the simple pendulum and to analyze the effect of change in amplitude, length and mass on the frequency
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Research  Question To obtain the frequency of the simple pendulum and to analyze the effect of change in amplitude, length and mass on the frequency? PHYSICS  EXPERIMENT Research Question: To obtain the frequency of the simple pendulum and to analyze the effect of change in amplitude, length and mass on the frequency? Variables to be used: Length of the string (L) Acceleration due to gravity (g) Time period of the pendulum (T) Amplitude (A) Mass of the pendulum (M) Hypothesis: According to length: The frequency of the simple pendulum is inversely proportional to the length of the string it means that as the length of the string increases the frequency decreases and vice-versa. According to amplitude: When the amplitude of the simple pendulum changes there is no change in frequency
How is the range of a catapult affected by the change in the surface used to slide a 236 g box on a cement floor?
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A catapult is a mechanical device that can be used to throw or hurl different objects to a great distance depending on the amount of force used. In this test a catapult is used to push a box on a cement floor and the aim is to test one factor that affects the range
Investigate the relationship between temperature and evaporation rate
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Evaporationexperiment Investigate the relationship between temperature and evaporation rate The hypothesis for this experiment that the higher the temperature the faster the evaporation rate. I assume this prediction based on the background theory of moving particle
Mass spring system
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Research Question: How does the period of the mass - spring system depend on the mass ? Hypothesis: Variables: Independent variable in this experiment was the mass. Dependent variable of this system is the Period
Investigating specific latent heat of vaporization of water
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Research Question Investigating specific latent heat of vaporization of water. Data Controlled Variables Power of the kettle: 1000W Intervals of the recording mass: 15s Mass of the water boiled Table 1: Mass of water evaporated over   time Time ±1s Mass of Water evaporated ±0
Specific latent heat of fusion of ice
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Aim The aim of this experiment is to determine the specific latent heat of fusion of  ice. Data Collection The following table, Table 1, shows all the recorded data that was collected along with the uncertainties (wherever applicable):- Table 1 Data Trial 1 Trial 2 Mass of empty copper calorimeter (g) ± 0
Lab template
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On the following pages are a lab template designed for you to organize your lab reports. The last page includes the marking rubric for how you will be assessed
How does the number of holes in a plastic cup affect the time it takes the water to drip out of a cup?
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Design: Problem:How does the number of holes in a paper cup affect the time it takes for the water to drip out of a cup? Hypothesis: If there are more holes in the plastic cup, the time it takes for the water to drip out of the cup would decrease because there is no physical barrier to prevent the water from dripping out. Manipulated Variable: The number of holes at the bottom of the cup The number of holes at the bottom of the cup would be measured by puncturing the bottom of the cup with a screwdriver with the number of desired holes
An investigation of the formation of craters
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Question: How does the mass of a spherical object and the height from which it is dropped into sand affect the width and depth of the crater formed? Introduction: Background Information: The formation of a crater is caused by the transfer of kinetic energy from the dropping object to potential energy present in the possible crater. In order to determine the relationship between the mass of the object, the height from which it is dropped from, and the size of the crater the relationship between these two energies must be determined
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