3 years ago

How many neutrons does the most common isotope of hydrogen have?

1 answer:

8 0

The most common hydrogen isotope, protium, has no neutrons in the nucleus.

Isotopes of

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bulgar [2K]

Neon has 8 electrons in it's valence shell.

So, option A is your answer.

Hope this helps!

3 0

3 years ago

Pani-rosa [81]

Answer:

The mass of the sand that will fall on the disk to decrease the is 0.3375 kg

Explanation:

Moment before = Moment after

$I \omega_i = I \omega_f +mr^2 \omega_f\\\\mr^2 \omega_f = I \omega_i - I \omega_f \\\\m = \frac{ I \omega_i - I \omega_f}{r^2 \omega_f }$

where;

I is moment of inertia = Mr² = 0.3 x (0.3)² = 0.027 kg.m²

substitute this in the above equation;

$m = \frac{ 0.027[3(2 \pi) - 2(2 \pi)]} {0.2^2 * 6\pi } = \frac{ 0.027[6 \pi - 4\pi]} {0.2^2 * 4\pi }\\\\m = 0.3375kg$

Therefore, the mass of the sand that will fall on the disk to decrease the is 0.3375 kg

7 0

3 years ago

mylen [45]

23.2

hope this helped

4 0

3 years ago

Makovka662 [10]

Answer:

The answer is 904,000.

Kinetic energy=1/2mv^2.

1/2×1130×40^2.

1/2×1808000=904,000Joules.

8 0

3 years ago

Sergio039 [100]

1) neuron stars

2) centrifugal force

8 0

1 year ago