18lapishso
18lapishso 18lapishso
  • 08-01-2021
  • Physics
contestada

All I need help on, is the first one on the top row. Thanks :))

All I need help on is the first one on the top row Thanks class=

Respuesta :

Quickanswerwhiz Quickanswerwhiz
  • 08-01-2021
13J is wasted energy.
The wasted energy is thermal energy (heat).
The light bulb’s efficiency is 67.5%
Answer Link
Fadhel
Fadhel Fadhel
  • 08-01-2021

Answer:

1a)40-27=13

1b) heat

1c)efficiency = W out/W in

so 27/40= 67%

Answer Link

Otras preguntas

write a friendly letter of thanks to your grandmother who knitting you a jersey and sent it to you in the post for Christmas​
HELP ME WITH A AND B
please help will mark brainliest
In this figure, 12.2% of the area is painted blue. How much of the area is painted blue? 4 cm 1.22 cm? O 3.05 cm O 4.27 cm 5 cm O 5.49 cm 5 cm PLEASE HELP ME?
Complete each sentence with the most logical option (French)
You receive a call to a daycare center for an unresponsive 8-month-old infant. Upon arrival, you perform an assessment and determine that the infant is not brea
HELP PLEASE I AM SO STUCK AND CONFUSED
________ is the degree to which an innovation fits the values and experiences of potential consumers.
\frac{2^{2}}{2^{-7}}\times 2\normalsize? 2 −7 2 2 ​ ×2?
Which would be classified as a pullutant? Argon Smoke Water vapor Nitrogen