Desde el suelo un balón es pateado con un ángulo de elevación de 45° y cae a 14,7m del punto de donde fue pateado. ¿Con qué velocidad fue pateado el balón?

Which of the following is not a part of a wave? question 2 options: a: frequency b: refraction c: wavelength d: amplitude (whoever answers correctly first gets brainiest! ) ~kayla

Wo audio speakers are placed on a vertical rail. speaker a is placed at head-level while speaker b is place at some variable height, \delta yδy, above speaker a. both speakers receive simultaneous input from a sine-wave generator so the speakers each produce a pure sinusoidal sound wave with a wavelength of 0.531 meters. calculate the lowest height that speaker b can be placed above speaker a to produce a minimum of sound heard by person standing \delta x = 7.86δx=7.86 meters directly in front of speaker a.

In 1980, alfa romeo introduced the first system to smooth a rough idle caused by ignition and camshaft timing changes.