G= 10N/Kg An engine does 1500 J of useful work with each 5000 J of energy supplied to it.
(a) What is its efficiency?
(b) What happened to the rest of the energy supplied

Ineed ! it’s science and it’s due tomorrow!

Which type of bond is present in hydrogen sulfide (h2s)? the table of electronegativities is given. a. hydrogen b. ionic c. nonpolar covalent d. polar covalent

Essay-alternative energy sources research sources of energy that are being developed. write a report of 350-400 words discussing the information you learned concerning the development of various energy sources and the impact that you think they will have on your life. include sources cited at the end of your report using the mla format. follow the rubric guidelines. note that wikipedia is not an appropriate resource for a research paper. worth 99