Diameters 15683

How many ball shots with diameters of 2 mm can be made of 1 kg of special metal alloy with a density of r = 7550 kg/m3?

Correct answer:

n =  31620

Step-by-step explanation:

D=2 mm ρ=7550 kg/m3 ρ1=ρ/1000=7550/1000=20151=72011=7.55 g/cm3  m=1 kg g=1 1000  g=1000 g  V=m/ρ1=1000/20151=1000:20151=1000 15120=1511000 20=15120000132.4503 cm3  r=D/2=2/2=1 mm r0=r cm=r:10  cm=1:10  cm=0.1 cm mm V0=34 π r03=34 3.1416 0.130.0042 cm3  n=V/V0=132.4503/0.0042=31620



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