An engineer uses aluminum to build an airplane rather than composite materials that are lighter and stronger. He does this because he is concemed
about the composite materials and how suddenly they can fail. This is an
example of
A. choosing a material that will show warning before it fails.
B. using a material for multiple applications,
C. using design techniques that increase efficiency and reduce
costs
D. using composite materials that combine strengths,

The diagram shows the positions of the sun, moon and earth during spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

The following reaction shows the products when sulfuric acid and aluminum hydroxide react. al(oh)3 + h2so4 → al2(so4)3 + h2o the table shows the calculated amounts of reactants and products when the reaction was conducted in a laboratory. sulfuric acid aluminum hydroxide initial amount of reactant 40 g 15 g theoretical yield of water from reactant 14.69 g 10.38 g what is the approximate amount of the leftover reactant? 11.73 g of sulfuric acid 10.33 g of sulfuric acid 11.12 g of aluminum hydroxide 13.67 g of aluminum hydroxide

In salt water solution,the salt is the blank