Question

一道物理题,非常急,我会加40分的

Answer 1

P = F / s

2352pa = G / 8*8cm^2

G = 150528 N

G = mg

150528 N = m * 9.8N/kg

m = 15360 g

rou = m / V = 15360 g / 8*8*8 cm^3 = 30g/cm^3