Can you guys help me with this guestion?
1 answer:
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Answer:
The number of revolutions turned by the centrifuge is 8250 revolutions.
Explanation:
Given;
number of revolution per minutes, ω = 15000 rpm
time of motion, t = 330 s = 5.5 minutes
The number of revolutions turned by the centrifuge is given by;
Therefore, the number of revolutions turned by the centrifuge is 8250 revolutions.
Ratio of resistances of two bulbs = 2:3
Both are connected in series.
We have to find the ratio of powers in the bulbs..
We know that, current flow through each conductor in series connection remains same. So, we have to use that formula of power which shows relation between current and resistance.
- P = I² × R
For series connection; P ∝ R
→ P₁/P₂ = R₁/R₂
→ P₁/P₂ = 2/3
→ P₁ : P₂ = 2 : 3