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vladimir1956 [14]
3 years ago
14

A coil has an inductance of 8.00 mh, and the current in it changes from 0.200 a to 1.50 a in a time interval of 0.350 s. find th

e magnitude of the average induced emf in the coil during this time interval. mv
Physics
1 answer:
matrenka [14]3 years ago
3 0
Wegvwervqewvevwqevrv
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An ice skater has a moment of inertia of 5.0 kgm2 when her arms are outstretched. at this time she is spinning at 3.0 revolution
givi [52]
With arms outstretched,
Moment of inertia is I = 5.0 kg-m².
Rotational speed is ω = (3 rev/s)*(2π rad/rev) = 6π rad/s
The torque required is
T = Iω = (5.0 kg-m²)*(6π rad/s) = 30π 

Assume that the same torque drives the rotational motion at a moment of inertia of 2.0 kg-m².
If u = new rotational speed (rad/s), then
T = 2u = 30π
u = 15π rad/s
   = (15π rad/s)*(1 rev/2π rad)
   = 7.5 rev/s

Answer: 7.5  revolutions per second.

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2 hours

Explanation:

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Given uranium 235 go through an alpha, beta, beta, alpha, gamma, neutron and alpha. What do you have now?
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b. 88, 222

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235U₉₂ ----→ Alpha --------→  231P₉₀  ----→- beta -----→ 231Q₉₁ ------→-beta -------→231R₉₂--------→-alpha ------→-227S₉₀ ------→ gamma -----→-227S₉₀ ----------→ neutron ------→-226T₉₀-----------→ alpha --------→222 X ₈₈

Atomic No is 88 , atomic weight = 222 .

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