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  • Kinetic Energy Change As The Water
    3,493 words
    Thermochemistry Answer Key Assignments 1- 8 Page 1. Answers to Energy Assignment 1 1. Indicate whether the following scenarios illustrate matter possessing mainly potential energy, or kinetic energy. a) There are 30 liters of fuel in the tank of a stationary automobile. o Potential energy (chemical energy in fact) b) A large rock is perched at the edge of a 40 m cliff. o Potential energy (of the gravitational type) c) Energy is supplied to a beaker of water raising its temperature from 20 oC to ...
  • Kinetic Energy Of The Marble
    865 words
    Physical Science lab #5 Objective The goal of this experiment is to develop a theory, which allows us to understand the motion of a marble. Materials Wooden roller coaster, marble, ruler, timer, clamp, physics stand. Theory In this experiment, we are finding the Conservation of Energy. Energy is neither created nor destroyed. Energy is summed up into two different properties: Potential energy and Kinetic energy. The law of Energy states that: Total Energy = Potential Energy + Kinetic Energy OrEm...
  • Free Energy
    517 words
    The second law of thermodynamics states that energy transitions are imperfect. No matter what, energy is lost. In machines an 75% loss of energy is considered average. In biological reactions there is usually a 60% loss. Since all reactions are constantly losing a percentage of the energy they give, it is necessary to have a constant intake of energy to make up for what is lost. This intake of energy helps life to remain ordered. If something disrupts that order, entropy begins to take effect. I...
  • Potential Energy In The Stretched Band
    357 words
    Energy Energy is the name given to the ability to do work. Work and energy are measured in the same units. People often confuse energy, power, and force. Force is a push or a pull on an object or body. The amount of work is determined by the strength of the force used and the distance through which it moves. Power measures the rate at which work is done. There are 2 different kinds of energy. Potential energy is often called stored energy. It represents work that has already been done. A rock ly...
  • Potential Energy The Trolley
    4,455 words
    Skill Area P: Planning experimental procedures Introduction A trolley is pushed to the top of a ramp, the summit being 20 cm from the ground, and then is released. It rolls all the way down the ramp, of 2 metres, before it collides with the wall at the bottom. A couple of keen scientists thought it would be interesting to record the time taken for the trolley to reach the bottom and then calculate its average speed. They let the trolley fall down the ramp two more times after that, just to make ...
  • Elastic Potential Energy Of The Pole
    732 words
    Conservation of Energy Physics Essay: The Conservation of Energy Since the beginning of time, energy has pervaded our earth. These days we rely on it to advance in our technological developments. We also need energy for a variety of other things such as: to keep our bodies alive and healthy, to run our machines and other technical devices, we also rely on energy to keep warm in winter and cool in summer. Energy is the ability to do work. People and other things can run out of energy (e.g. a mara...
  • Efficiency Of The Motor 1 0
    787 words
    The aim of this experiment is to compare the electrical energy used to operate a motor with the potential energy gained by a mass raised by the motor. Materials: 1.1 motor 2. String 3.1 spool 4. Ammeter 5. Voltmeter 6.7 insulated cables 7. Stand to hold the motor 8.1 switch 9.1 rheostat 10.1 power pack 11.3 x 10 gram weights Procedures: 1. Set up a circuit as shown in figure 50-1.2. Tie the cotton to the spool and attach the spool to the motor 3. Tie a ten gram weight onto the end of the cotton ...

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