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Physics Essay Examples

X-ray interactions with matter

This document presents the interactions of x-ray with matter. It talks about the five types of x-ray interactions with matter, photoelectric absorption, compton scattering, pair production, coherent interaction, and photodisintegration. Each of this x-ray interactions are discussed in a manner that it can be understood by the general public. This document also dwells on the…

Heat Engine Lab

Heat engine lab Intro: when an engine runs, it pumps pistons that move up and down and provide energy to the engine to it to go. These pistons move because of pressure and heat. This work done on the system is not only mechanical but its also thermodynamic. When a piston undergoes one full cycle…

Projectile range and projectile motion

As we all know ski jumping is a worldwide sport in which athletes skate down a slope ramp, gaining speed that throws them in the air that makes them land some distance away. The distance travelled at the time when the jumper leaves the ramp, until he reaches the ground is known as the jump…

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Experiment to determine gravity from a spring using analogue techniques

The aim of this first experiment is to examine simple harmonic motion exhibited a mass on a spring. Using data recorded in doing this, the spring constant for each spring can be calculated along with a value for gravity. In the first part of this experiment, the relationship between the period of the oscillations of…

Retort stand and clamp

In reference to the safety aspect, the radiation source is kept inside a lead block, inside a wooden box, inside another wooden block, tongues are present for the movement of the source so it never directly handled. The sources themselves are in holders, which channel the radioactive output in one direction alone. However as I…

Force of friction experiment

Limiting static friction Friction always opposes motion. It increases with the applied force. However, it cannot increase indefinitely. When a body is in contact with a rough surface, friction arises at the contact surface if the body is subjected to an applied force. When the applied force exceeds the limiting static friction , the body…

Galileo’s Rolling Ball experiment

Galileo in his rolling ball experiment investigated the acceleration of a ball rolling down an inclined plane, using a similar setup I will investigate how the time taken to roll down the inclined plane varies with the vertical height change. Theory: When two similar objects are thrown vertically downwards, they are in a state of…

Physics investigation- stopping distance

Introduction In my investigation I intend to gather enough evidence and explanation to see if and how the mass of a ball will affect its stopping distance. I will carry out a series of tests starting with changing the mass of the ball then changing height which it’s dropped from. Predictions I predict that the…

Pulleys, forces and the principle of moments

A Push or Pull which can vary in magnitude or direction on an object is called Force. The direction of force is the direction of push or pull. If the push and pull are on opposite directions, they act simultaneously, in other words the one with the greater push gives the direction of force. The…

Big Bang Theory Development Essay

The Theory of the Big Bang started from observations and scientific facts. The Big Bang theory provinces that after the “Big Bang” the existence expanded from its original pea-sized beginning to astronomical proportions. and the enlargement of the existence still continues today but at a much slower rate. In the 20th century many scientific developments…

The effect of temperature on a squash ball

I did a preliminary experiment to see if my method would work and if there were any problems with the way I will conduct my experiment. Preliminary Results Temperature (i?? C) Distanced Bounced (Cm) 90 81 40 68 0 20 Factors affecting my experiment If I use different squash balls of different elasticity it will…

The length of Pencil lead affect Its Resistance

Aim: The aim of this piece of course work is to find out how does the resistance of a pencil lead changes as I increase its length. And to find out what is the relationship between the length of a pencil lead and its resistance. Safety: Safety is a very important thing to consider as…

Ohm’s law

In this investigation I want to find out how the length of and the width of the wire affects the resistance. Resistance: An explanation of what resistance would be that resistance is the opposition of a conductor to a flow of current. It is when traveling electrons in a wire collide with the atoms of…

Resistance of a nichrome wire

Introduction In this piece of coursework I aim to find the effects of length on a piece of nichrome wire. Resistance is a force which opposes the flow of an electrical current, this is why energy is needed to push the particles around. The circuit also contains its own resistance if the wires vary in…

The resistivity of Constantan

The resistance of a piece of wire is dependant on its length, cross-sectional area and the type of metal the wire is made of. The resistance of a given wire can be calculated using the following equation: R = ? L / A where: L = Length (m) A = cross-sectional area (mi?? ) ?…

Thermal insulators

To investigate different materials for the most effective thermal insulator for a house. Introduction Heat transfer is the gain and loss of energy. There are three ways in which thermal energy can be transferred:  Conduction  Convection  Radiation Conduction – this is when energy travels from molecule to another. When one molecule receives energy it begins…

Physics

What is science? Science is a body of knowledge that is ever changing. It is made up of not only facts but also theories that are made up of well-tested hypotheses. 2. Dullness’s among the scientific fact, hypothesis, law and theory As stated above, a theory Is made up of well-tested hypotheses, which In themselves…

Amplitude and period relationship

Oscillation is a motion, which repeats itself. A simple harmonic motion is when object moves back and fourth within a stable equilibrium position. In a perfect situation, where friction plays no part the ball will continue oscillating continuously. However in real life this is not possible, instead objects face damping due to friction. Any system…

The relationship between the angle of a slope incline and the acceleration

As the angle of the slope incline increases, the acceleration of the model cart moving down it will also increase. I have predicted that acceleration is directly linked with the angle of the slope on which the object is moving. When coming up with this hypothesis, I asked myself the following question, “what forces actually…

Nichrome wire by determining its resistivity

Metals have low resistance due to their delocalized field of electrons. However, different metals have different values of resistance. In this experiment, the students were given a spool of Nichrome wire to determine its diameter. Nichrome, as the name suggests, is an alloy of Nickel, Chromium and Iron. The resistance of a conductor depends on its…

Standing Waves on a String

The objective of this experiment is to study the resonance modes of a stretched string by measuring directly in order to test the theoretical formula which relates the tension in the string to its length, mass, resonance frequency, and mode of vibration. Definition of Standing Waves: An oscillation pattern that has an outline which is resulting from…

Circular Motion

Circular motion is the motion that links velocity, mass, and radius of the string of an object. If any one of the factors is changed, the motion of the object gets affected or the velocity/acceleration gets affected. All objects going through circular motion experience a force called the centripetal force. Centripetal force is the force…

Hooke’s Law

The aim of this experiment is to investigate Hooke’s law for simple springs of rubber. The relationship between a load force and a light spring (F=k. x) was first determined by Robert Hooke in the 17th century. Where F is the force applied to the spring, k is the spring constant, and x is the…

Hydrogen spectrum

A hydrogen discharge tube is a device that can trap small amount hydrogen in a sealed tube of glass, and if potential difference is applied to that tube an emission of an atomic spectrum can be produced. The emission of the spectrum is produced from the excitation of the hydrogen electron (by the voltage) to…

Physics-Inclined Plane Lab

If an object is placed upon a surface that is inclined at a certain angle then that will decide the acceleration in which the object is going down the inclined plane. When looking at an inclined plane it is important to see what forces are acting upon it to see what the object is doing….

Experimenting with compound pendulums and moment of inertia

Two compound pendulums with different weight distributions were used to experimentally determine if the laws of simple harmonic motion would apply to them as well. The moments of inertia were determined experimentally, based on the periods of the pendulums, and compared to theoretical calculations. The average percent error for the pendulum with the shorter R…

Torque physics lab report

The purpose of this experiment was to help understand torque by not only measuring it but also by manipulating and adjusting the weights experimentally. Procedure In order to perform all the procedures a few instruments were required a meter stick, a triple beam balance, suspension clamps and their stirrups, a knife edge, as well as…

Linear Motion Lab

2. LINEAR MOTION In this experiment you will study the motion of an object in one dimension from a number of points of view. You will demonstrate how the variables of motion are related by differentiation and integration and investigate the relationship between potential and kinetic energy. Theory Why Study Motion? Motion is everywhere in…

Simple harmonic motion of a simple pendulum

To work out the value of acceleration due to gravity (g), by using the principle of kinematics of simple harmonic motion of a simple pendulum. Introduction- The theory involved here is the motion of the simple pendulum under the influence of acceleration due to gravity. The research question here says that the value of acceleration due to…

Permeability of free space

1. Gather all necessary materials listed above 2. Using the electronic scale, measure the mass of the wooden block and record this, taking into account uncertainties where applicable. 3. Attach the string to the wooden block, and the other end to a mass-hook. 4. Place the sheet of sandpaper underneath the block and tape the sheet firmly in…

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