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ZanzabumX [31]
3 years ago
5

What is the atomic number of potassium?

Physics
1 answer:
vovikov84 [41]3 years ago
6 0
Potassium is the 19th element so it is B 
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Answer:

reactants --> products + thermal energy

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Psychology:
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A car drives 215 km east and then 45 km north. What is the magnitude of the car’s displacement? Round your answer to the nearest
34kurt

Displacement = (straight-line distance between the start point and end point) .

Since the road east is perpendicular to the road north,
the car drove two legs of a right triangle, and the magnitude
of its final displacement is the hypotenuse of the triangle.

    Length of the hypotenuse = √ (215² + 45²)

                                              =  √ (46,225 + 2,025)

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3 years ago
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If you decrease the length of a wire, what effect will it have on resistance
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As the length increases, resistance increases, as a result current decreases.
7 0
3 years ago
A lightning bolt transfers 6.0 coulombs of charge from a cloud to the ground in 2.0 x 10-3 second. what is the average current d
AlladinOne [14]
The current is defined as the amount of charge transferred through a certain point in a certain time interval:
I= \frac{Q}{\Delta t}
where
I is the current
Q is the charge
\Delta t is the time interval

For the lightning bolt in our problem, Q=6.0 C and \Delta t= 2.0 \cdot 10^{-3}s, so the average current during the event is
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4 0
3 years ago
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