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Savatey [412]
3 years ago
14

________ have an electrical charge of +1, while __________ have an electrical charge of -1. A. Electrons, protons B. Protons, el

ectrons C. Electrons, neutrons D. Neutrons, electrons
Physics
1 answer:
Goshia [24]3 years ago
7 0

Answer:

It's B, protons,,, electrons

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A bullet is fired through a wooden board with a thickness of 9.0 cm. The bullet hits the board perpendicular to it, and with a s
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-387883.3 m/s²

0.000286168546055 seconds

Explanation:

t = Time taken

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v^2-u^2=2as\\\Rightarrow a=\dfrac{v^2-u^2}{2s}\\\Rightarrow a=\dfrac{259^2-370^2}{2\times 9\times 10^{-2}}\\\Rightarrow a=-387883.3\ m/s^2

The acceleration of the bullet is -387883.3 m/s²

v=u+at\\\Rightarrow t=\dfrac{v-u}{a}\\\Rightarrow t=\dfrac{259-370}{-387883.3}\\\Rightarrow t=0.000286168546055\ s

The time taken is 0.000286168546055 seconds

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