Una municipalidad recibe una donacion de 2750000 adoquines para pavimentar el parque de la localidad y calle principal. A. detrmine el área en metros cuadrados que se podra adoquinar
Bdetermine la cantida de metros lineales de calle que se podran adoquinar
*un adoquin mide 20x20cm
*ancho de calle 8,000 mts

Why is alchemy not considered to be a science ?

Consider a uniformly charged ring in the xy plane, centered at the origin. the ring has radius a and positive charge qdistributed evenly along its circumference. a)what is the direction of the electric field at any point on the z axis? . b)what is the magnitude of the electric field along the positive z axis? use k in your answer, where k=14πϵ0. d)the ball will oscillate along the z axis between z=d and z=−d in simple harmonic motion. what will be the angular frequency ω of these oscillations? use the approximation d≪a to simplify your calculation; that is, assume that d2+a2≈a2. express your answer in terms of given charges, dimensions, and constants

At what time will the interfering waves have an amplitudeof zero?