65 results for “energy”
Energy of a moving object.
Energy stored due to height in a gravitational field.
Work done by a force over a distance.
Rate of doing work.
Energy equivalent of mass.
Heat needed to change temperature of a substance.
Energy of a photon from its frequency.
Kinetic energy of a rotating body.
Potential energy of two masses at distance r.
Energy stored in a stretched or compressed spring.
Energy cannot be created or destroyed, only transformed.
Faster-moving fluid has lower pressure (energy conservation in flow).
Energy conservation: change in internal energy equals heat added minus work done.
Total energy radiated by a black body scales with the fourth power of temperature.
Mass and energy are equivalent and interconvertible.
The energy of a photon is proportional to its frequency.
Change in internal energy equals heat added minus work done.
Heat needed to change a substance’s temperature.
Energy conservation for a thermodynamic system.
Mean translational kinetic energy per molecule.
Energy of a single photon.
Photon energy from its wavelength.
Energy of two interacting charges.
Energy stored per unit volume in EM fields.
Energy conservation along a streamline.
Energy contained in mass.
Quantised energy of radiation.
Kinetic energy of ejected electrons.
Energy of the nth hydrogen orbit.
Energy holding a nucleus together.
Energy stored in a capacitor.
Energy stored in a magnetic field.
Energy stored in an inductor magnetic field.
Predicts spontaneity of a reaction.
Energy stored by producers after respiration.
Energy transfer between trophic levels (~10%).
Energy available to an ecosystem after respiration.
Daily calories burned including activity.
Energy used during exercise.
Total food energy in kilocalories from its macronutrients using the Atwater factors.
Energy contributed by protein at 4 kcal per gram.
Energy from carbohydrate at 4 kcal per gram.
Energy from fat at 9 kcal per gram — the most energy-dense macronutrient.
Energy from pure alcohol (ethanol) at 7 kcal per gram.
Convert dietary Calories to the SI energy unit used on many food labels.
Calories per gram of a food — a key idea in filling, lower-calorie eating.
Share of total energy coming from a given macronutrient.
Approximate body-fat change (kg) from a cumulative calorie deficit or surplus.
Energy of a mass in another body's gravitational field.
Conservation of energy in fluid flow.
Energy stored in an elastically deformed body.
Energy released by a quake of Richter magnitude M.
Emissions from energy use and an emission factor.
Power extracted from wind by a turbine.
Maximum fraction of wind energy a turbine can capture.
Energy output of a photovoltaic array.
Electrical energy used over time.
Energy produced over a lifetime divided by energy to build it.
Approximate energy released by an earthquake.
Convert calories to joules.
Convert kilowatt-hours to joules.