Help pleas!! What is something that you would like to see a physicist develop in the future?

=force × distance a. work b. velocity c. pressure d. momentum

This is the substance(s) formed in a chemical reaction.

Aheat engine that operates on a carnot cycle has an efficiency of 0.420 when its low-temperature reservoir is at 10 ∘c. part aby how many degrees celsius must you increase the temperature of the high-temperature reservoir to increase the efficiency to 0.600 if you continue to use the same low-temperature reservoir?