14. An observer looks through a slit of width \( 5 \times 10^{-4} \) meter at two lanterns a distance of 1 kilometer from the slit. The lanterns emit light of wavelength \( 5 \times 10^{-7} \) meter. The minimum separation of the lanterns at which the observer can resolve the lantern lights is most nearly (A) 0.01 m (B) 0.1 m (C) 1 m (D) 10 m (E) 100 m

A \( 9-\mathrm{kg} \) block rests on a \( 29^{\circ} \) incline. The coefficient of static friction between the block and incline is 0.26. How large a horizontal force must push on the block if the block is to be on the verge of sliding up the incline?

б)

\( \left\{\begin{array}{l}b(1)=-500 \\ b(n)=b(n-1) \cdot \frac{4}{5}\end{array}\right. \) Qualé o 3 o̊ termo na progressåo?

Would a scale drawing of the Colombian flag where 1 cm represents 0.5 feet larger or smaller than this drawing? Show or explain your reasoning.

h: \( \left\{\begin{aligned} 3 x+2 y & =4 \\ -2 x+3 y & =-7\end{aligned}\right. \)