C. A rock falls for 4 seconds. How far did it fall

Abeam has a square cross-section, a x a, where a is the linear dimension, and is subject to a pure bending moment, m. m is known with an uncertainty of 10% and a is known with an uncertainty of 5%. the strength of the material is known to an uncertainty of 12%. find the minimum design factor such that the beam is guaranteed not to fail.

How does the entropy of steam compare to the entropy of ice?

Which component of the earth’s atmosphere is decreased due to photosynthesis?