1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
andreyandreev [35.5K]
3 years ago
10

what is the percent efficiency of a light bulb that emits 14 joules of light for every 60 joules of electric energy thst enters

it?
Physics
1 answer:
jasenka [17]3 years ago
5 0
If you're using the bulb as a source of light, then it's. 14/60 = 23.3% efficient.
If you're using it to heat a bird nest or a hamster cage, then it's. 46/60 = 76.7% efficient !
It just depends on your point of view, and what you consider 'useful' output.
You might be interested in
I don't know the answer to 1
larisa86 [58]
Waves transfer energy but not matter
7 0
4 years ago
Read 2 more answers
How much force is required to accelerate a 2kg mass at 3 m/s2? answer key?
mr Goodwill [35]
F = ma so u can plug in the given numbers and solve:

F = (2)(3)
4 0
3 years ago
Tomorrow i have a science test, could someone please fill me in on the water cycle?
Lorico [155]

the cycle of processes by which water circulates between the earth's oceans, atmosphere and land involving precipitation as rain and snow drainage in streams and rivers and return to the atmosphere by evaporation and transpiration.

Hope this gives you a little bit more information!

5 0
4 years ago
Lee skated 36 miles in 3 hours. What was the speed at which Lee
Zanzabum

Answer:

12mph

Explanation:

36/3=mph

8 0
3 years ago
Power is the rate at which...........is done or the rate at which........... is converted from one form to another .
34kurt

Answer:

the answer is c I thought

8 0
3 years ago
Other questions:
  • A 2.0 kg mass weighs 10 Newtons on planet X. what is the acceleration due to gravity on planet X? Show the work.
    8·1 answer
  • Question 1
    10·2 answers
  • The temperature, T, of a gas is jointly proportional to the pressure P of the gas and the volume V occupied by the gas. Use C as
    12·1 answer
  • At take off, a plane flies 100 km north before turning to fly 200 km east. How far is its destination from where the plane took
    10·2 answers
  • How much pressure is applied to the ground by a 78 kg man who standing on square stilts that measure 0.04 m on each edge ? Answe
    10·1 answer
  • A machine part is undergoing SHM with a frequency of 5.00Hz and amplitude 1.80cm . How long does it take the part to gofrom x=0
    13·1 answer
  • What does the w mean in w=fxd
    8·2 answers
  • A pendulum is made of a small sphere of mass 0.250 kg attached to a lightweight string 1.20 m in length. As the pendulum swings
    14·1 answer
  • The battery has a voltage of 12V. R1 = R2 = 100Ω.
    10·1 answer
  • You lift a stuffed toy up above the ground (over your head).
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!