¿Qué fuerza se deberá aplicar en un embolo pequeño de una prensa hidráulica de 12 cm de area, para levantar un cuerpo de 70 000 N de peso, que se encuentra en el embolo mayor y cuya área es de 85 cm?

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ºc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in ×10^{-3} −3 m)