Energy and Thermal Physics

Human energy expenditure

Stories from Physics for 11-14 14-16 IOP RESOURCES

A wonderfully detailed list of the energy expenditures of various activities has been produced:

ActivityEnergy expenditure (kJ per hour per kg of body mass)
Talking or talking on the phone, reclining4
Sitting, knitting, sewing, light wrapping (presents)6
Occupation, office work in general6
Studying, general, including reading and/or writing (sitting)7.5
Washing dishes9
Shopping (non-grocery shopping, walking)9
Playing snooker/pool10
Getting ready for bed10
Walking using crutches17
Playing drums17
Table tennis, ping pong17
Scrubbing floors on hands and knees23
Grooming a horse25
Carrying groceries upstairs33
A police officer making an arrest33
Swimming, backstoke33
Football, competitive42
Swimming, crawl, fast46


appears in the relation ΔEΔt>ℏ/2 ΔQ=mcΔθ E=hf E ∝ A^2
has the special case Photon Energy
is used in analyses relating to Emission/Absorption Spectra Phase Change
2023 IOP Awards

Teachers of Physics Awards

Recognising and celebrating outstanding contributions to the field of physics education.

Learn more