A cube iron block with side length of 1dm, immersed in water When the iron block is completely immersed in water and its upper surface is 0.5 DM away from the liquid level, the upper and lower surfaces of the iron block are subjected to pressure difference and buoyancy

A cube iron block with side length of 1dm, immersed in water When the iron block is completely immersed in water and its upper surface is 0.5 DM away from the liquid level, the upper and lower surfaces of the iron block are subjected to pressure difference and buoyancy

Buoyancy f = P (water) * g * V = 1000 * 10 * 0.1 ^ 3 = 10N
Buoyancy is caused by the pressure difference between the upper and lower surfaces of the liquid, that is, f = (P1-P2) * s, so the pressure difference P1-P2 = f (floating) / S = 10 / 0.1 ^ 2 = 1000Pa

I beg you, I beg you
1.560km=___ m=___ mm=__ nm 2.7.8dm=___ cm=___ mm=___ um 3.6700m=___ mm=___ um=___ nm 4.0.89km=___ m=___ cm=___ um 5.0.75m=___ cm=___ um=__ nm 6.0.003dm=___ cm=__ nm 7.780nm=___ mm=___ m=__ km 8.900um=___ cm=___ m 9.85mm=___ dm=___ km 10.0.07mm=___ m=___ km 11.0.005nm=___ m=___ km 12.300dm=___ nm=___ km 13.0.008cm=-——m=___ km=___ nm
I'm dazzled, but look carefully=

If there is no typesetting, I'll arrange it. 1.560km = 560 × 10 ^ 3M = 560 × 10 ^ 6mm = 560 × 10 ^ 12NM 2.7.8dm = 7.8 × 250px = 7.8 × 10 ^ 2mm = 7.8 × 10 ^ 5um 3.6700m = 6700 × 10 ^ 3mm = 6700 × 10 ^ 6um = 6700 × 10 ^ 9nm 4.0.89km = 0.89 × 10 ^ 3M = 0.89 × 10 ^ 125px = 0.89 × 10 ^ 9um 5

How to convert 20 kilometers per minute into meters per second?

20000 / 60 = 333.33 M / S