A cooling curve's tangent at t = 2 min has a gradient of −5 °C/min. This means:

  1. the temperature is 5 °C
  2. the temperature is falling at 5 °C per minute at that moment
  3. the temperature is rising
  4. the cooling has stopped
Answer

B) the temperature is falling at 5 °C per minute at that moment

Instantaneous rate. SLO P-11-N-16 · Application

Physics MCQ · More Experimental Skills and Data Analysis MCQs · Practise