Machines can be made more efficient by reducing . mechanical energy

pressure

kinetic energy

friction

Explain what makes a passenger in a turning car slide toward the door. critical thinking

How many hydrogen (h) atoms are in one molecule of sulfuric acid, h2so4? (1 points) 1 2 4 7

*drag each tile to the correct location in the sequence* the table shows chronological events in the life of our sun, a medium-sized star. place the missing events into the correct rows of the table.