The distance should be 4m from the wire in order to get the magnetic field of 0.100μ .
- The magnitude and direction of the magnetic field due to a straight wire carrying current can be calculated using the previously mentioned Biot-Savart law. Let "I" be the current flowing in a straight line and "r" be the distance. Then the magnetic field produced by the wire at that particular point is given by
...(1) - Since the wire is assumed to be very long, the magnitude of the magnetic field depends on the distance of the point from the wire rather than the position along the wire.
It is given that magnetic field 40.0 cm away from a straight wire is 1.00μT having current 2.00 A .
From equation (1) magnetic field 40.0 cm = 0.4m away from a straight wire is 1.00μT which is given by 
.....(2)
From equation (1) magnetic field 'r' m away from a straight wire is 0.100μT which is given by 
...(3)
On dividing equation (2) by (3) , we get
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Answer:
1) Atmosphere
Explanation: because if you think about it the only real explaination is atmosphere.
Answer:
the density of indium is 7.2 g/cm^3
Explanation:
The computation of the density of indium is shown below:
Given that
Mass = 16.6 g
Volume = 48.6 c,^3 - 46.3cm^3 = 2.3 cm^3
Based on the above information
As we know that
Density = mass ÷ volume
So,
= 16.6g ÷ 2.3 cm^3
= 7.2 g/cm^3
hence, the density of indium is 7.2 g/cm^3
We simply applied the above formula so that the correct value could come
And, the same is to be considered
The body moves at a velocity of 1.62m/s after the bullet emerges.
<h3>Given:</h3>
Mass of bullet, 
= 22g
= 0.022 kg
Mass of the block, 
= 1.9 kg
Velocity of bullet , 
= 265 m/s
According to the law of collision which states that the momentum of the body before the collision is equal to the momentum of the body after the collision.
After penetration;
The formula for calculating the collision of a body is expressed as:
p = mv
m is the mass of the body
v is the velocity of the body
∴ Momentum before = Momentum after
Substitute the given parameters into the formula as shown:
Therefore, It moves with a velocity of 1.62 m/s.
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