3 years ago

What do electrons have that protons always have in equal magnitude?

Physics

1 answer:

zimovet [89]3 years ago

6 0

The both contain a nucleus.

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if a ball is released from a height 80cm how long would it take the ball to reach the ground when g= 10m per seconds

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The ball took 0.4 seconds

Explanation:

» From the second newton's equation of motion.

${ \boxed{ \tt{s = ut + \frac{1}{2} {gt}^{2} }}}$

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u is initial velocity, u = 0 [ from rest ]
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${ \tt{0.8 = (0 \times t) + ( \frac{1}{2} \times 10 \times {t}^{2} )}} \\ \\ { \tt{0.8 = 5 {t}^{2} }} \\ { \tt{ {t}^{2} = 0.16 }} \\ { \tt{t = \sqrt{0.16} }} \\ \\ { \underline{ \underline{ \tt{ \: time = 0.4 \: seconds \: \: }}}}$

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