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Verdich [7]
3 years ago
10

A Van Der Graaf generator is used to build up charges on the outside of a sphere. A belt is charged with electrons by rubbing ag

ainst a rough pulley. These electrons are then transferred to a metal sphere and spread out even on its outer surface. When neutral objects are brought near the sphere, they are attracted to the sphere before they touch each other.
What evidence from the prompt can you give that charges can be moved by induction
Physics
2 answers:
lesantik [10]3 years ago
8 0

Answer:

If you’re on USA test prep is (D)

Explanation:

Nikolay [14]3 years ago
5 0

Answer:

"When neutral objects are brought near the sphere, they are attracted to the sphere before they touch each other."

Explanation:

Charging by induction is said to occur when an uncharged object is brought near a charged body and it gets attracted towards it without even the two bodies touching.

The charged body polarizes the uncharged body. The charges shift to either sides and that causes the force of attraction between the two.

Suppose a negatively charged body is brought close to an uncharged body. The electrons of the body repel from the side near to the charged body and shift to the other end leaving behind positive ions.

The last line of the given paragraph indicates that charges can be moved by induction.

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3 years ago
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An airplane is traveling at a fixed altitude with an outside wind factor. The airplane is headed N 40° W at a speed of 600 miles
bija089 [108]

Answer:\vec{v_R}=\hat{i}[-329.11]+\hat{j}[516.18]

Explanation:

Given

Plane is initially flying with velocity of magnitude v=600\ mph

at angle of 40^{\circ} with North towards west

Velocity of plane airplane can be written as

v_a=600(-\sin 40\hat{i}+\cos 40\hat{j})

Now wind is encountered with speed of v=80\ mph at angle of N45^{\circ}E

v_w=80(\cos 45\hat{i}+\sin 45\hat{j})

resultant velocity

\vec{v_R}=\vec{v_a} +\vec{v_w}

\vec{v_R}=600(-\sin 40\hat{i}+\cos 40\hat{j})+ 80(\cos 45\hat{i}+\sin 45\hat{j})

\vec{v_R}=\hat{i}[-385.67+56.56]+\hat{j}[459.62+56.56]

\vec{v_R}=\hat{i}[-329.11]+\hat{j}[516.18]

for direction \tan \theta =\frac{516.18}{329.11}

\tan \theta =1.568

\theta =57.47^{\circ} west of North

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3 years ago
Why smartphone and computer are called modern technology?​
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Answer:

Hey

I am sure from what i know that your answer should be the following:

Modern technology is deeply tied to efficiancy and speed. Think of the knew 5G network it gives us very fast internet, or perhaps our very nessisitys such as our phone or cumputer. On a phone you have so much (thats to say you can acces alot easly); pictures videos dictionarys video games etc etc.

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50%

Explanation:

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The y-axis of a position-time graph represents__________.
Sladkaya [172]

Answer:position relative to the starting point

Explanation:

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