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tekilochka [14]
4 years ago
15

If an atom has 17 protons, 16 neutrons, and 21 electrons, what is the atom's electrical charge? A. -1 B. -4 C. +5 D. +4

SAT
1 answer:
a_sh-v [17]4 years ago
5 0
The answer is -4 while the element is chlorine
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Read 2 more answers
A 5 n force is applied to a 3 kg ball to change its velocity from +9 m/s to +3 m/s. the time for the collision is _____ seconds.
Veseljchak [2.6K]

The time for the collision is 3.6S.

<h3>What is collision?</h3>

The collision is an encounter between particles resulting in exchange or transformation of energy.

According to the question,

Force,

F = 5 N

Mass,

m = 3 kg

Velocity,

v₁ = 9 m/s and v₂ = 3 m/s

As we know,

F=m*(v/t)

so,

5=3*(9-3/t)

T=3*6/5

T=18/5

hence, the time for the collision is

T= 3.6S.

Learn more about collision here,

brainly.com/question/13138178

#SPJ1

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