When applying the process of science which of theseis tested 1.a question, 2.an observation, 3.a conclusion, 4.a prediction

Jackson is designing a new heater, and he wants to experiment with different thermally conductive materials. which of these materials would be useful in conducting heat?

Arod of some material 0.20 m long elongates 0.20 mm on heating from 21 to 120°c. determine the value of the linear coefficient of thermal expansion [in (degrees c)^-1] for this material.

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?