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Nadya [2.5K]
3 years ago
6

HELP ASAP! PLEASEEEE ​

Physics
1 answer:
Lady_Fox [76]3 years ago
5 0

Explanation:

Sorry i had to post it here. This is for the chemistry question on The top

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The more twists per foot in a pair of wires, the more resistant the pair will be to ____.
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The more twist per foot in a pair of wires, the more resistant the pair will be to cross talk. A cross talk in network planning and design is a disturbance produced by electromagnetic interference beside a circuit or a cable pair. A telecommunication signal interrupts a signal in an adjacent circuit and can source the signals to turn out to be confused and cross over each other.  
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3 years ago
Calculate the force of a particle with a net charge of 170 coulombs traveling at a speed of 135 meters/second perpendicular to t
amm1812

Answer:

F=1.14N j

Explanation:

The magnitude of the magnetic force over a charge in a constant magnetic field is given by the formula:

|\vec{F}|=|q\vec{v} \ X\ \vec{B}|=qvsin\theta  (|)

In this case v and B vectors are perpendicular between them. Furthermore the direction of the magnetic force is:

-i X k = +j

Finally, by replacing in (1) we obtain:

\vec{F}=(170C)(135\frac{m}{s})(5.0*10^{-5}T)=1.14N\ \hat{j}

hope this helps!

6 0
3 years ago
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____ would describe an airplane as "Earthen metal infused with Air and propelled by elemental Fire"
svlad2 [7]

Answer:

Aristotle

Explanation:

Aristotle  would describe an airplane as "Earthen metal infused with Air and propelled by elemental Fire".

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8 0
3 years ago
Which of the following statements best explains why the table of known elements is called the "periodic table"? A. The table is
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It's called the periodic table because it arranges the elements the into repeating sets known as periods. this is defined by the <span>covalence of an element and the number of electrons i has in its outermost shell. I feel the the Best answer would be B. sorry if im wrong but i hope i helped :)</span>
5 0
3 years ago
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7. A roller coaster’s velocity at the top of a hill is 10 m/s. Two seconds later it reaches the bottom ofthe hill with a velocit
zheka24 [161]

Answer:

7) a=8m/s^2

8) a=-5m/s^2

9) a=-1.5m/s^2

10) v=29.4m/s

Explanation:

For the problems 7, 8 and 9 we just apply the definition of acceleration, since no more information is given, which is:

a=\frac{\Delta v}{\Delta t}=\frac{v_f-v_i}{t_f-t_i}

So for each problem we will have:

7) a=\frac{26m/s-10m/s}{2s}=8m/s^2

8) a=\frac{10m/s-25m/s}{3s}=-5m/s^2

9) a=\frac{0m/s-15m/s}{10s}=-1.5m/s^2

For the problem 10, we use the equation of velocity in accelerated motion:

v=v_0+at

Since the ball starts from rest and the acceleration is that of gravity (we take the downward direction positive), we have:

v=(0m/s)+(9.8m/s)(3s)=29.4m/s

5 0
3 years ago
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