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lapo4ka [179]
3 years ago
14

The force a magnet exerts on another magnet, on iron or a similar metal, or on moving charges is

Physics
2 answers:
In-s [12.5K]3 years ago
7 0
The answer is a magnetic force.
alexandr1967 [171]3 years ago
3 0

Answers to U4 Quiz:

1. B

2. D

3. C

4. B

5. B

6. A

7. D

8. C

9. B

10. A

11. B

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sergey [27]

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speed

Explanation:

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3 years ago
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A rod has a radius of 10 mm is subjected to an axial load of 15 N such that the axial strain in the rod is ????௫ = 2.75*10-6, de
EleoNora [17]

Answer:

Knowing we only have one load applied in just one direction we have to use the Hooke's law for one dimension

ex = бx/E

бx = Fx/A = Fx/πr^{2}

Using both equation and solving for the modulus of elasticity E

E = бx/ex = Fx / πr^{2}ex

E = \frac{15}{pi (10 * 10^{-3})^{2} * 2.75 * 10^{-6}    } = 17.368 * 10^{9} Pa = 17.4 GPa

Apply the Hooke's law for either y or z direction (circle will change in every direction) we can find the change in radius

ey = \frac{1}{E} (бy - v (бx + бz)) = -\frac{v}{E}бx

= \frac{vFx}{Epir^{2} } = \frac{0.23 * 15}{pi (10 * 10^{-3)^{2} } * 17.362 * 10^{9}  } = -0.63 *10^{-6}

Finally

ey = Δr / r

Δr = ey * r = 10 * -0.63* 10^{-6} mm = -6.3 * 10^{-6} mm

Δd = 2Δr = -12.6 * 10^{-6} mm

Explanation:

5 0
3 years ago
What is the net force (including direction and magnitude) acting on the object on the above left?
Ber [7]

Answer:

Explanation:

the net force on the right left is 25 N and is directed upward

the net force on the left one is zero because 200N force act upward and 200N force act downward so both cancel each other and net force is zero

i hope this will help you

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2 years ago
According to Newton’s first law of motion what will an object in motion do when no external force acts on it?
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The object will continue moving in a straight line at constant speed.
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Given this measurement 2642 ft, how many significant figures are there?
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