If two engines are given the same amount of fuel, the more efficient engine can do more work than the less efficient engine can The following questions could be asked to help make scientific or technological progress. Which of the following questions is best
asked and answered as part of a scientific investigation, not as part of technological improvements?
OA. How can a more efficient engine be built?
OB.
How can the efficiency of an existing engine be improved?
OC.
How efficient can an engine be, in theory?
OD
How can efficient engines be built more cheaply?

What filament and tubules give a cell its shape

Note the ph and poh values labeled with letters on the ph scale below. based on log rules and the way ph is calculated, what is the difference in [oh– ] concentration between point a and point b. a) 10^1 b) 10^5 c) 10^6 d) 10^7

Which is a difference between molecular compounds and ionic compounds? select the correct answer below: question 5 options: molecular compounds typically form between a metal and a nonmetal, while ionic compounds typically form between nonmetals. molecular compounds result from the transfer of electrons between atoms to form ions, while ionic compounds result from the sharing of electrons between neutral atoms. molecular compounds are formed of discrete, neutral molecules, while ionic compounds are formed of large repeating arrays of opposite charges. molecular compounds have high melting points and high boiling points, while ionic