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Tanzania [10]
3 years ago
7

Why Are Atoms Neutral?

Physics
1 answer:
Pachacha [2.7K]3 years ago
5 0
Answer is C.  when protons are equal to electrons their charges cancel out making it neutral because electrons have a charge of negative one and when you combine  them   positive 1 and negative 1 is 0.

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A rifle fires a 3.56 x 10-2-kg pellet straight upward, because the pellet rests on a compressed spring that is released when the
vivado [14]

Answer:

k = 773.64 N/m

Explanation:

Given:

mass of the pellet, m = 3.56 x 10² kg

Compression in spring, x = 6.61 × 10⁻² m

Height of rise of the pellet, h = 4.83 m

Now, let k be the spring constant

From the concept of conservation of energy, we get

gravitation potential energy acquired by the pellet will be from the energy provided by the spring

thus,

mgh = \frac{1}{2}kx^2

where, g is the acceleration due to the gravity

on substituting the values, we get

3.56\times10^2\times9.8\times4.83 = \frac{1}{2}k\times(6.61\times10^{-2})^2

or

1.685 = .002178 × k

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5 0
3 years ago
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kondor19780726 [428]

Answer:

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7 0
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Which of these is the best explanation for why 2 negatively charged balloons if put close repel
Scilla [17]
Opposite charges attract; like charges repel :)
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3 years ago
The mass of this astronaut on the moon is 84kg. If the astronaut is on the moon for 3 weeks then returns home, his mass will be
saul85 [17]

Answer:

84kg

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