Power is how fast we are producing or converting a quantity energy. Power has units of energy divided by time. A Watt is a unit of power. It represents one joule of energy transformed every second. A 60 Watt light bulb converts 60 joules of energy every second into light and heat (...
Energy is measured in Joule (j). The energy of one Joule in one second = one Watt (W). We use energy to produce work. When we do, a part of the original energy is transformed into thermal energy. We call that energy loss and the amount of that loss defines the efficiency of a p...
How much excess nutritional energy, in kilojoules, does the adult consume per day? Express your answer using one significant figure. How is the calorie defined? How does a Calorie differ from a calorie? How is the joule related to the calorie? How mu...
Before we dive into the power consumption of TVs, it’s essential to understand the unit used to measure electrical power – Watts. One watt is equivalent to one joule per second, representing the rate at which energy is consumed or produced. In other words, it’s a measure of how much ...
That's how many joules (the standard measurement of energy) you'd get from a kilogram of mass. In theory, if you could turn about seven billion hydrogen atoms completely to energy, you'd get about one joule (that's about as much energy as a 10-watt lightbulb consumes in a tenth of...
Energy of a bulbEnergy can be expressed as the product of the power of the bulb and the time for which the bulb is operated. We get the result in Watt-hour or Joules. In order to convert this to the corresponding value in kil...
Specific energy is the amount of energy set free when we burn a kilogram of any fuel. The unit of specific energy is joule (J) per kilogram (kg)—the capital M is an abbreviation for “mega,” which means that the number shown here are actually millions. The graph shows a comparison ...
i can change the units since 1 watt is equal to 1 joule per second. but now this slope makes a bit more sense. this says that to make 1 kilogram of ice, it would require 4.55 x 10 5 joules of energy. but how much does electric energy cost? although different people have different...
Natural gas is also commonly measured in imperial units, especially in reference to gas barbecues and fireplaces. A British thermal unit (Btu) is the imperial cousin of the metric joule. A Btu is the amount of energy required to raise one pound of water one degree Fahrenheit. ...
Electric Power is the rate at which work is done. (See also:What is Work, Energy and Power?) Electric Power is the rate at which electricity does work or provides energy. TheSI unitof power is the watt, one joule per second.