Nhận biết (M1)

While researching a topic, a student has taken the following notes:

• • Generally, an object will heat up when twisted.

• • The twisting of an object is known as torsion.

• • A 2019 study led by Zunfeng Liu and Ray Baughman tested the torsional heating of various fibers.

• • When a sample of ethylene propylene diene monomer (EPDM) rubber fiber was twisted, its average surface temperature increased by 12∘C

• • When a sample of single-ply nickel-titanium (NiTi) wire was twisted, its average surface temperature increased by 21.3∘C.

The student wants to emphasize a similarity between EPDM rubber and single-ply NiTi wire fibers. Which choice most effectively uses relevant information from the notes to accomplish this goal?

• A.

  Both EPDM rubber and single-ply NiTi wire fibers heat up when twisted, according to a 2019 study.

• B.

  Researchers determined that when the fibers were twisted, the average surface temperature of single-ply NiTi wire increased more than that of EPDM rubber.

• C.

  In 2019, two research teams observed the effects of torsional heating on various fibers, including EPDM rubber and single-ply NiTi wire.

• D.

  Twisting an object will generally cause its temperature to increase, a process known as torsional heating.