420 ml is equal to a few parts of a liter

420/1000=21/50L

RELATED INFORMATIONS

1. As shown in the figure, the wood block a & nbsp; and B & nbsp; are connected by a light spring and placed vertically on the wood block C & nbsp; with their mass ratio of 1:2:3. Suppose that all the contact surfaces are smooth, and the acceleration of the wood block a & nbsp; and B & nbsp; is & nbsp; () A. aA=0B. aA=gC. aB=3gD. aB=32g
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15. 5x is less than 7X-2, 8x is more than 13x-5, 20x-19 is more than 18x-9, 3x is more than 4x-1
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