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cluponka [151]
3 years ago
12

A 4.0 kg bird has 8.0 J of kinetic energy. How fast is it flying?

Physics
1 answer:
Lady_Fox [76]3 years ago
4 0

Explanation:

formula is k.e 1/2mv^2

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Object A is 71 degrees and object B is 75 degrees how will thermal energy flow
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Given :

Object A is 71 degrees and object B is 75 degrees .

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How will thermal energy flow.

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5 0
2 years ago
The magnetic field of a long, straight, and closely-wound solenoid, inside the solenoid at a point near the center, is 0.645 T.
Savatey [412]

Answer:

B'=1.935 T      

Explanation:

Given that

magnetic field ,B= 0.645 T

We know that magnetic filed in the solenoid is given as

B=\mu _0 n\ I

I=Current

n=Number of turn per unit length

μ0 =magnetic permeability

Now when the current increased by 3 factors

I'=3 I

Then the magnetic filed

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B'=\mu _0 n\ (3I)

B'=3 B

That is why

B' = 3 x 0.645 T

B'=1.935 T

Therefore the new magnetic filed will be 1.935 T.

3 0
3 years ago
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