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hjlf
3 years ago
8

When a bar magnet is thrust at the same speed into a coil having twice the number of loops, the induced voltage is the same, no

different. half. twice as much. four times as much. none of the above
Physics
1 answer:
ss7ja [257]3 years ago
6 0

Answer:

Twice as much

Explanation:

Changing magnetic flux through a coil produce emf in the coil.

According to Faraday's law induced voltage is given by

∈= - N *dФ \ dt -----------( 1 )

N is number of turns of coil

Ф is flux linkage

dФ/dt is rate of change of flux

From equation (1) it is clear if rate of change of flux is the same but we  doubled the number of loops (i.e N₂= 2N₁) the voltage induced will be double.

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A rocket is fired in deep space, where gravity is negligible. If the rocket has a mass of 6000 kg and ejects gas at a relative v
shutvik [7]

25 miles per second worth of gas

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3 years ago
If a transverse wave osculates 7 times every second and the speed of the wave is 27 m/s what is the wavelength of the wave
Inessa05 [86]

Explanation:

formula is ˠ=vf

f=1/T

1/7

f=0.14

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5 0
2 years ago
3. The largest asteroid in the solar system is 1 Ceres. It has a mass of 9.3835
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Answer:

2.8351×10^7 N/kg

Explanation:

We know that,

W = mg -------(1)

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F = GMm/r²

Where,

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G = universal gravitational constant

M,m = masses of object under gravitational influence

r = distance between the two center of masses.

Here we get

F = (Gm/r²)M -------(2)

From 1 and 2

The acceleration due to gravity = gravitational field intensity

So if you consider the gravitational field intensity at the surface of the asteroid,it is equal to the acceleration due to gravity at the same place.

So we get,

g = (6.67×10^-11)×9.3835×10^20/(47²) = 2.8351×10^7 N/kg

3 0
4 years ago
One student is studying three rock samples, Rock 1, Rock 2, and Rock 3. The characteristics of the three rocks are listed below.
melamori03 [73]
To answer this question, we will refer to the attached diagram which represents the complete rock cycle.

Rock 1:
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Referring to the diagram, we will find that heat and pressure are the factors required to form metamorphic rocks
Therefore, rock 1 is metamorphic

Rock 2:
Formed when rock 1 and rock 3 were broken down into mineral (sediments) which accumulate and are subjected to pressure.
Referring to the diagram, we will find that this description would lead to the formation of sedimentary rocks.
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Rock 3:
Formed when rock 1 and rock 2 were buried inside the earth and melted because of heat and magma.
Referring to the diagram, we would find that melting then cooling of magma would lead to formation of igneous rock.
Therefore, rock 3 is igneous rock.

Based on the above, the correct choice would be:
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3 0
4 years ago
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