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VLD [36.1K]
3 years ago
6

An atom has 29 protons, 29 electrons, and 35 neutrons. What is the mass number of the atom?

Physics
2 answers:
BartSMP [9]3 years ago
8 0
The mass number is 64
Ilya [14]3 years ago
5 0
The mass number will be 64 as to calculate the mass you add up the protons and neutrons.

Hope this helps!
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A racquetball strikes a wall with a speed of 30 m/s and rebounds in the opposite direction with a speed of 26 m/s. The collision
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Answer:

The average acceleration of the ball during the collision with the wall is a=2,800m/s^{2}

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<u>Known Data</u>

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<u>final momentum</u>

p_{f}=mv_{f}=(26m/s)(m_{b})=26m_{b}\ m/s

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F=\frac{\Delta p}{\Delta t} =\frac{56m_{b}\ m/s}{0.020s} =2800m_{b} \ m/s^{2}

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Therefore, a=\frac{2800m_{b} \ m/s^{2}}{m_{b}} =2800m/s^{2}

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