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sveticcg [70]
3 years ago
7

9.2 True/False Questions

Physics
1 answer:
allochka39001 [22]3 years ago
5 0
1.)True 2.)True 3.)True 4.)True 5.)True
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I am struggling with this physics problem. Could someone please explain this problem to me in great detail? Thanks in advance!
Effectus [21]

Explanation:

this is really one tough question

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3 years ago
Albert's laboratory is filled with a constant uniform magnetic field pointing straight up. Albert throws some charges into this
guajiro [1.7K]

Answer:

\vec{F}=qB(v_y \hat{i} - v_x\hat{j})

Explanation:

The force excerted by a magnetic field on a charged particle is given by the Lorentz force:

\vec{F} = q \vec{v} \times \vec{B}

Lets consider the z-direction of our coordinate system the same direction of the magnetic field, that is:

\vec{B} = B \hat{k}

Let us consider that the velocity of a given particle is:

\vec{v} = v_x\hat{i} + v_y \hat{j} + v_z \hat{k}

Therefore, since k×k = 0

\vec{v} \times \vec{B} = (v_x\hat{i} + v_y \hat{j} + v_z \hat{k}) \times B\hat{k}\\\vec{v} \times \vec{B}  =  (Bv_x \hat{i} \times\hat{k}) + (Bv_y \hat{j}\times\hat{k})

And since  i, j , k are a rigth hand system:

i × j = k

j × k = i

k × i = j  --> i × k= -j

\vec{v} \times \vec{B}  = Bv_x (-\hat{j}) + Bv_y \hat{i} =  Bv_y \hat{i} - Bv_x\hat{j}

Threfore, if the particle has charge q and velocity v = (vx,vy,vz), the magnetic force it will feel will be

\vec{F}=qB(v_y \hat{i} - v_x\hat{j})

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4 years ago
Which nucleus completes the following equation? ​
Archy [21]

Answer:

I think B but I could be wrong

Explanation:

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3 years ago
Distance and direction of an object's change in position from a starting point are:
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Answer:

An object changes position if it moves relative to a reference point. The change in position is determined by the distance and direction of an object's change in position from the starting point (displacement). Direction • Direction is the line, or path along which something is moving, pointing, or aiming.

Explanation:

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What nonliving materials are important to living things?
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<span>Nonliving things also have unlimited duration of existence. While living things die and decompose, nonliving things such as rocks, mountains, air and water have existed for millions of years. They may grow, but they do so only by accretion, which is the process of growth by accumulating added layers of matter.</span>
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