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3 years ago

How many protons are in an atom of copper?

Physics

2 answers:

denis-greek [22]3 years ago

5 0

Answer:

Atomic number of copper is 29. The atomic number of an atom is determined by the number of protons in the nucleus. Therefore, there are 29 protons in an atom of copper. In a neutral atom, there are equal number of protons and electrons. Therefore, there are 29 electrons in a copper atom. Mass number of copper is 64.

Number of protons + Number of neutrons = mass number.

Therefore, number of neutrons = 63 -29 = 35

baherus [9]3 years ago

3 0

Answer: Copper (Cu)

Neutrons‎: ‎35 Electrons‎: ‎29

Protons‎: ‎29 Atomic Number‎: ‎29

Explanation:

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mafiozo [28]

Answer:

x = 0.974 L

Explanation:

given,

length of inclination of log = 30°

mass of log = 200 Kg

rock is located at = 0.6 L

L is the length of the log

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let x be the distance from left at which log is horizontal.

For log to be horizontal system should be in equilibrium

∑ M = 0

mass of the log will be concentrated at the center

distance of rock from CM of log = 0.1 L

now,

∑ M = 0

$m_{log} g \times 0.1 L = m_{engineer} g \times (x - 0.6 L)$

$200 \times 0.1 L = 53.5 \times (x - 0.6 L)$

$0.374 L =x - 0.6 L$

x = 0.974 L

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3 years ago

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Katen [24]

Answer:

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Explanation:

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