¿Cuál será la presión que ejercerá una vaca sobre el suelo si la superficie de cada una de sus patas es aproximadamente de 50cm2 y su masa es de 600kg?

the first american roller coaster was the mauch chunk switchback railway, built in the mountains of pennsylvania in the mid-1800s. the track, originally built to send coal to a railway, was reconfigured as a "scenic tour."

layers of the earth affect the waves and these effects are seen on instruiments such as seimometers