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Crazy boy [7]
2 years ago
7

If a permanent magnet picks up a steel paper clip, the paper clip also

Physics
2 answers:
kiruha [24]2 years ago
6 0

I think it is

C. An interaction between electricity and magnetism produces an

electromagnet, while a permanent magnet induces the paper clip's

magnetic field

Ksivusya [100]2 years ago
4 0
I think the answer is C
Hope this helps you have a great night!!
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A bus contains a 1440 kg flywheel (a disk that has a 0.63 m radius) and has a total mass of 10200 kg. Calculate the angular velo
CaHeK987 [17]

Answer:\omega =93.51 rad/s

Explanation:

Given

mass of Flywheel m_1=1440 kg

mass of bus m_b=10200 kg

radius of Flywheel r=0.63 m

final speed of bus v=21 m/s

Conserving Energy i.e.

0.9(Rotational Energy of Flywheel)= change in Kinetic Energy of bus

Let \omegabe the angular velocity of Flywheel

0.9\cdot \frac{I\omega ^2}{2}=\frac{m_bv^2}{2}

I=moment\ of\ Inertia =mr^2=1440\cdot 0.63^2=571.536 kg-m^2

0.9\cdot \frac{571.536\cdot \omega ^2}{2}=\frac{10200\cdot 21^2}{2}

\omega ^2=21^2\times \frac{10200}{0.9\times 571.536}

\omega =21\times 4.45=93.51 rad/s

8 0
3 years ago
How is the acceleration of an object in newtons second law related to its mass and the net force on it?
9966 [12]
B) Acceleration is directly proportional to the mass of the object
4 0
3 years ago
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In the diagram, q1, q2, and q3 are in a straight line.
schepotkina [342]

Answer:

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3 0
2 years ago
Ted William drops a ball from 14.5 meter to a desk that is 1.9 meters tall. What is the final speed of the ball right before it
makkiz [27]

Answer:

15.7m/s

Explanation:

To solve this problem, we use the right motion equation.

 Here, we have been given the height through which the ball drops;

 Height of drop = 14.5m - 1.9m  = 12.6m

The right motion equation is;

      V²  = U² + 2gh

V is the final velocity

U is the initial velocity  = 0

g is the acceleration due to gravity  = 9.8m/s²

h is the height

  Now insert the parameters and solve;

       V² = 0² + 2 x 9.8 x 12.6

      V²  = 246.96

       V = √246.96  = 15.7m/s

4 0
3 years ago
13. Which statement correctly describes the human heart? A. It has three chambers, and pumps blood directly into veins. B. It ha
Marta_Voda [28]
Number 13 is D the heart has 4 chambers and pumps blood to the arteries and number 14 us C

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