Joules Calculator Overview
The joule is a metric unit of energy equal to 1 watt-second.
Make use of this calculator to convert real power in watts to energy in joules. Simply enter both values - power in watts and time in seconds - into their respective text fields before clicking "Calculate".
An object's total kinetic energy depends on both its mass and velocity; to calculate this figure, one needs to know the formula for joules which is:
Mass (in kilograms)
A joule is the SI (Systeme International d'Unites) metric system's standard unit of energy. It is defined as the amount of energy necessary to do one newton of work over one meter distance. A joule can also be used as an effective measure of an object's kinetic energy; using simple formulae it can be converted to force or momentum and heat produced from chemical reactions; there are 4.19 joules in one kilogram.
The joule is often mistakenly compared with the kilogram, a widely used weight unit. However, it is essential to distinguish between mass and weight; people often confuse these terms--even medical professionals--and mistake kilograms for weight when they should actually use newtons as measured in newtons instead. This confusion stems from misinterpreting SI base unit "metre" which defines length as multiples of time but may change according to local conditions.
An object's kinetic energy depends on both its mass and velocity. To accurately calculate this figure, first locate its mass with an accurate scale before measuring or calculating its velocity using various measurements and formulae. These values can then be entered into the following kinetic energy formula: E = Kinetic Energy in Joules; M = Mass in kilograms and C=Speed of Travel in meters per second
This formula can be modified to express mass as the product of density and volume. For instance, E is defined as an object's kinetic Energy in joules while m represents its density in kilograms per cubic meter and c its speed in meters per second. This calculator uses this rearrangement of the kinetic energy formula to convert given values of kinetic energy and velocity into their respective masses.
This tool can also be used to calculate mass, acceleration and speed calculations. By default, the calculator uses joules as its energy measurement unit; however, you may switch this by selecting another unit from the drop down menu at the top of the page. Once your units have been selected, simply enter your values in the fields provided and click Calculate!
Joules are an internationally accepted unit of energy measurement. However, this tool allows you to convert them to different units. You can use it to convert from joules to watts, BTU's or even kJ (kiloJoules). Furthermore, this calculator helps clarify how power and energy relate - for instance a 10kW generator may use 18,000,000 joules during 30 minutes of operation!
Velocity (in meters per second)
Velocity (also referred to as speed) is a vector quantity with both magnitude and direction, measured in meters per second (m/s). Like displacement, velocity's measurement depends on both distance and time; unlike speed which is an uni-dimensional quantity like displacement is, however, velocity also has direction, and any difference in its direction over the same interval determines acceleration of an object - it even requires knowing its direction when calculating an average velocity!
Similar to displacement, average velocity can be calculated by dividing an object's total distance traveled by the amount of time taken for it to cover that distance. You could calculate its average velocity using the same formula as its average speed; however, doing so would be misleading as this only takes into account changes in distance without considering changes in direction; for instance if an object moves straight ahead for five kilometers then its average speed would equal five kilometers/hour but its average velocity will point toward the north instead.
To determine an object's average velocity, simply enter its total distance traveled and the time taken for its completion into our joules calculator's input fields. It will do all the hard work for you while providing both results and equations describing physics concepts as it goes along.
A common SI unit used to express speed is the meter per second, often abbreviated as "m/s or m/s2. This SI-derived unit works with other units from the metric system and was originally popularly expressed using miles per hour; today however, using modern math and measuring tools, m/s is the preferred unit of measurement.
When converting between units of speed, remember that any number multiplied by 1000 will convert it to kilojoules - an integral unit of energy representing potential or kinetic potential energy that can be transferred between objects.
To estimate an object's kinetic energy, first determine its mass using an accurate scale or formula, then use the joules calculator to ascertain its velocity, multiply these two values by its acceleration/mass product for an estimate of its kinetic energy.
Tips & Tricks
If you need to quickly convert from one unit of measurement to another, use the unit converter feature. For instance, if you're moving from kilograms to grams, simply enter the value in one measure before the calculator converts it to another unit automatically - this feature is especially handy for conversions involving SI units, such as those found within the metric system of measurements.
Utilizing the Units button at the top of a calculator will bring up a window with all available units of measurement, from which you can choose one to use in calculations. All entries within your calculator will then change accordingly, making calculations with different units easier.
An understanding of your calculator's physics programs can make complex calculations much easier, including solving for various physics issues. This set contains everything needed to find solutions for such issues as finding distance of moving object from fixed point, velocity acceleration of object, specific heat capacity calculation.
Find a program that solves for the wavelength and energy of photons using the Planck equation; this tool can be invaluable when trying to identify what kind of energy source exists in flashlight or laser lights.
Another helpful physics program is this one, which can determine the speed of a satellite in relation to Earth's orbit time and help prevent collisions with objects in its path.
This tool makes it simple to convert from watts to joules, which can help when determining how much energy something consumes in a certain period. Simply enter both power in watts and time in seconds into their respective fields before clicking "Calculate."
Calculating percentages requires understanding fractions as well. You can do this by pressing on the Fractions button, entering a number before or after pressing, and inputting "4n" before pressing to form a numerator of four (for instance). Furthermore, this tool also lets you quickly convert decimals to decimals and fractions into fractions for conversion calculations.