Answer:
Colour of any object is by the colour of light it reflects i.e if white light is incident on the object,it will reflect blue color.so it will appear blue.But if red light is incident on it,it will not reflect that and absorb it.so as it will not reflect any light it will appear black.
Explanation:
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The way you described it, a small change will cause a bigger change.
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Answer:
M = 1073 Mev/c2
u = 0.95 C
Explanation:
given data:
m1 =135 Mev/c2
v1 = 0.53 c
m2 = 938 Mev/c2
v2 = 0.98 c
from conservation of momentum principle we have


...............1
Total mass of INITIAL particle M =m1+m2 = 1073 Mev/c2
using equation 1

solving for u we get
u = 0.95 C