Which of the following is part of a vacuum?
inclined plane
block and tackle
wedge
lever

Question

Which of the following is part of a vacuum? 
    inclined plane 
   block and tackle 
   wedge 
   lever

anonymous · Answer

Lever, will be I hope.

anonymous · Answer

Which of the following pieces of information are needed to calculate the mechanical advantage of an inclined plane? 
    a the effort distance and the resistance force 
  b the resistance force and height 
 c  the amount of effort needed to perform the work 
 d  the effort distance and the resistance distance

anonymous · Answer

b....I am sure

anonymous · Answer

it's a.) the effort distance and the resistance distance not b.)