# An introduction to the experiment on the rate of power and energy

Voltmeter borrowed Graph paper, optional Experimental Procedure: Make a saltwater solution by mixing a small jar of water with a teaspoon of salt. Place a zinc-coated nail into the solution, and tape it to one side of the cup securely. This will be the negative electrode. Mechanical Energy Power The quantity work has to do with a force causing a displacement. Work has nothing to do with the amount of time that this force acts to cause the displacement.

Sometimes, the work is done very quickly and other times the work is done rather slowly. For example, a rock climber takes an abnormally long time to elevate her body up a few meters along the side of a cliff. On the other hand, a trail hiker who selects the easier path up the mountain might elevate her body a few meters in a short amount of time.

## Introduction

The two people might do the same amount of work, yet the hiker does the work in considerably less time than the rock climber. The quantity that has to do with the rate at which a certain amount of work is done is known as the power. The hiker has a greater power rating than the rock climber. Power is the rate at which work is done. Mathematically, it is computed using the following equation. As is implied by the equation for power, a unit of power is equivalent to a unit of work divided by a unit of time.

For historical reasons, the horsepower is occasionally used to describe the power delivered by a machine. One horsepower is equivalent to approximately Watts.

Most machines are designed and built to do work on objects. All machines are typically described by a power rating. The power rating indicates the rate at which that machine can do work upon other objects. A car engine is an example of a machine that is given a power rating.

The power rating relates to how rapidly the car can accelerate the car. If this were the case, then a car with four times the horsepower could do the same amount of work in one-fourth the time. The point is that for the same amount of work, power and time are inversely proportional.

The power equation suggests that a more powerful engine can do the same amount of work in less time. A person is also a machine that has a power rating. Some people are more power-full than others. That is, some people are capable of doing the same amount of work in less time or more work in the same amount of time.

## Objectives

A common physics lab involves quickly climbing a flight of stairs and using mass, height and time information to determine a student's personal power.An Introduction to Physics.

This collection introduces you to the most basic information you need to understand physics, including key terms, history, laws, and equations. The experiment was repeated with Rockstar and coffee (steps ) on the next 2 consecutive days. This was repeated at the same time each day.

Data Data is currently on powerpoint Conclusions This experiment was designed to figure out which caffeinated drinks affect heart rate, and by how much. Electrical power of an appliance (measured in watts or kilowatts) is the rate at which electrical energy is used (power = energy per unit time).

If the appliance is an electric heater, nearly all the electrical energy is converted into heat. Experiment 4: Work, Power and Energy Laboratory Report Christopher Allan Tan, Charisse Christine Tomimbang, Christian Paul Torres, Jairah Mae Vea, Janna Vernice Villalon, Cyd Vincent Zamora Department of Biological Sciences College of Science, University of Santo Tomas España, Manila Philippines Abstract In physics, we .

Experiment # 3: Pipe Flow Introduction Volumetric flow rate, pressure, and head losses are key fundamental quantities in the energy lost due to frictional forces, the flow also loses energy (or pressure) as it goes through fittings, such as valves, elbows, contractions and expansions.

This loss in pressure is often due to. Heat Transfer: Introduction 1 As warm-blooded animals, we all care about heat and temperature! Our Confirm that the materials are available for each experiment. Some of the experiments involve hot water.

An electric kettle is a great Power and energy.

Power and Energy