When the atmosphere is not quite clear, one may sometimes see colored circles concentric with the Sun or the Moon. These are gen
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Answer:
It is given that:
Density of material =ρ
radius of inner spherical shell =
radius of outer spherical shell=
we know that the volume of sphere is
Volume of the given spherical shell =
Then mass of the spherical shell can be calculate as:
Mass, m=density/ volume
Answer:
8. acceleration = = 1 unit .
9. acceleration = = -1 unit.
10. acceleration = = 0 units.
Explanation:
8. i) acceleration = velocity / time
ii) In this figure velocity = time
iii) therefore acceleration = = 1 unit .
9. i) acceleration = velocity / time
ii) In this figure 4 = m + 5, therefore m = -1
therefore velocity = (-0.5 time) + 5
iii) therefore acceleration = = -1 units.
10.) velocity is constant at 2
therefore acceleration = = 0 units