20 points needs done 1. on which surface of a submerged object does the surrounding fluid exert pressure? a. all surfaces b. the top surface c. no surfaces d. the bottom surface 2. is a ramp in a parking garage a type of simple machine? a. yes, it is a lever. b. yes, it is a wedge. c. yes, it is an inclined plane. d. no, it is not a machine. 3. how is thermal energy different from heat? a. they are different names for the same type of energy. b. thermal energy is a form of energy, while heat is a form of energy transfer. c. heat is a form of energy, while thermal energy is a form of energy transfer. d. thermal energy is measured in °k, while heat is measured in °c. 4. why is trapped air a good insulator? a. it reduces heat transfer. b. it is actually a poor insulator. c. it stops heat transfer. d. it increases heat transfer. 5.how are first-class levers different from third-class levers? a. first-class levers do not increase the input force. b. first-class levers increase the input force. c. first-class levers change the direction of the force. d. first-class levers do not change the direction of the force.