Air terjun yang tingginya 50 m digunakan untuk memutar generator listrik tenaga air (PLTA). Setiap detik air mengalir 12 m3 (massa jenis air 1000 kg/m3). Berapa energi potensial gravitasi yang dihasilkan air terjun setiap detiknya.

Air terjun yang tingginya 50 m digunakan untuk memutar generator listrik tenaga air (PLTA). Setiap detik air mengalir 12 m3 (massa jenis air 1000 kg/m3). Berapa energi potensial gravitasi yang dihasilkan air terjun setiap detiknya.

Jawaban untuk soal ini adalah 6 x 10^6 joule

Energi potensial adalah energi yang dimiliki oleh benda yang memiliki ketinggian terhadap permukaan.

Diketahui:
h = 50 m
ρ = 1000 kg/m^3
V = 12 m^3

Ditanyakan
Ep

Penyelesaian:
Hitung massa air yang jatuh
m = ρ . V
m = 1000 . 12
m = 12 x 10^3 kg

Hitung energi potensial
Ep = mgh
Ep = 12 x 10^3 . 10 . 50
Ep = 6 x 10^6 joule

jadi, energi potensial gravitasi air terjun tersebut adalah 6 x 10^6 joule.

Baca Juga :  Complete the sentences with a form of the verb in parentheses. Three hundred and fifty years ago, people (1. make) /made/ their own clothes. They (2. have, not) _____ machines for making clothes. There (3. be, not) _____ any clothing factories. People (4. tear) _____ homemade clothes that were sewn by hand. Today, very few people (5. make) _____ their own clothes. Clothing (6. come) _____ ready-made from factories. People (7. buy) _____ almost all their clothes from stores. The modern clothing industry (8. be) _____ international. As a result, people from different countries often (9. wear) _____ similar clothes. For example, people in many different countries throughout the world (10. wear) _____ jeans and t-shirts. However, some regional differences in clothing still (11. exist) _____ for instance, people of the Arabian deserts (12. wear) _____ loose, flowing lobes to protect themselves from the heat of the sun. In parts of Northern Europe, fur hats (13. be) _____ common in the winter. In the future, there (14. be, probably) _____ fewer and fewer differences in clothing. People throughout the world (15. wear) _____ clothes from the same factories. (16. We all, dress) _____ in the future? TV shows and movies about the future often (17. show) _____ everybody in a uniform of some kind. What (18. you, think) _____? Number 6