Final answer:
Checking the reasonableness of physics answers involves confirming the magnitude, sign, and units of the solution, along with compliance with observed natural behavior and correct significant figures.
Step-by-step explanation:
When solving physics problems, evaluating the reasonableness of an answer involves checking its magnitude, sign, and units. This process is crucial as it ensures the solution accurately describes natural phenomena. Moreover, correct use of significant figures is essential for precision.
For example, if a 72.0-kg physicist with 400 kg of equipment compresses an antenna, the change in length can be calculated using elasticity equations, ensuring the solution's units are consistent, such as meters for length. Consistency with observed behaviors of similar structures confirms the solution's validity.
Similarly, calculating the stretch of a nylon rope under a climber's weight must result in a reasonable elongation. Comparing the result to the known stretchiness of nylon and bungee cords can confirm the finding's accuracy. The flagpole's flex under wind force must align with known properties of aluminum and the specifics of the scenario such as the force applied and pole dimensions.