21 The mass of a substance whose density is 1 kg/m3
e density is 1 kg/m3 and volume is 3m3
is
Answers
Answered by
2
Answer:
3 kg
Explanation:
Mass = Volume × Density
= 3 m³ × 1 kg/m³
= 3 kg
Answered by
0
2.8 eV
Explanation:
Energy = hc/λ
= (1240 eV nm) / (437 nm)
= 2.8 eV
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