Sign In
Ask Question
Cailyn Mckenzie
Physics
29 July, 16:51
What is power in physics
+3
Answers (
1
)
Mckenna Miller
29 July, 16:53
0
Edit
In physics, power is the rate of doing work or of transferring heat, i. e. the amount of energy transferred or converted per unit time. Having no direction, it is a scalarquantity. In the International System of Units, the unit of power is the joule per second (J/s), known as the watt in honour of James Watt, the eighteenth-century developer of the condenser steam engine. Another common and traditional measure is horsepower (comparing to the power of a horse). Being the rate of work, the equation for power can be written:
Power
Common symbols
Derivations from
other quantities
P = E/t
P = F·v
P = V·I
P = T·ω
As a physical concept, power requires both a change in the physical system and a specified time in which the change occurs. This is distinct from the concept of work, which is only measured in terms of a net change in the state of the physical system. The same amount of work is done when carrying a load up a flight of stairs whether the person carrying it walks or runs, but more power is needed for running because the work is done in a shorter amount of time.
Comment
Complaint
Link
Know the Answer?
Answer
Not Sure About the Answer?
Find an answer to your question 👍
“What is power in physics ...”
in 📗 Physics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers
You Might be Interested in
The decibel level of an orchestra is 90 db, and the violin section achieves a level of 80 dB. How does the sound intensity from the full orchestra compare to that from the violin section alone?
Answers (1)
A bird is flying directly toward a stationary bird-watcher and emits a frequency of 1180 Hz. The bird-watcher, however, hears a frequency of 1260 Hz. What is the speed of the bird, expressed as a percentage of the speed of sound?
Answers (1)
14. Cost is an example of_ in designing a product. O a solution O a constraint O an idea O a trade-off
Answers (1)
I've been learning how to calculate wavelength and I don't get it at all.
Answers (1)
Which statement describes an essential characteristic of data in an experiment?
Answers (1)
New Questions in Physics
What are starburst galaxies and what do they have to do with galaxy evolution?
Answers (1)
Six light bulbs are connected in series with a 9.0 volt battery. What is the voltage across each bulb?
Answers (1)
Can an object travel at the speed of light? Why or why not?
Answers (1)
It's a hot and sunny day and you decide to go for a drive. When you open your car door, it's a lot hotter than outside. Why is that
Answers (1)
Which compound is composed of oppositely charged ions
Answers (1)
Home
»
Physics
» What is power in physics
Sign In
Sign Up
Forgot Password?