An engineer is designing a shape memory alloy. Which of the following is a limitation of these types of materials? Choose the correct answer. O They are composed of rare metals.
O They can wear out after repeated use.
O They are difficult to manufacture on a large scale.
They are hazardous when placed in the human body.

To find the work done, the force exerted and distance moved are multiplied. a couch is moved twice before you are happy with its placement. the same force was used to move the couch both times. if more work is done the first time it is moved, what do you know about the distance it was moved? a) when more work was done, the couch was moved the same distance. b) when more work was done, the couch was moved less. c) when more work was done, the couch was moved further. d) when more work was done, the couch wasn't moved at all.