3 years ago

Which is the correct symbol for an isotope of helium with 2 neutrons?

Physics

1 answer:

SIZIF [17.4K]3 years ago

5 0

The correct symbol is 4He. You may also encounter it displayed as helium-4, He-4.

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Conditional waves contain a crest, trough, wavelength, and amplitude<br> True or False?

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True

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According to the what the universe's total amount of energy does not change

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Se coloca una piedra de 600 g en una Honda de 50 cm y se la hace girar a una velocidad de 4 m/s. Dibuja la fuerza que ejerce la

Dima020 [189]

Answer:

Fc = 19.2 N

Explanation:

In this case, the force of the Honda over the rock, is a centripetal force. Then, you have:

$F_c=m\frac{v^2}{r}$

m: mass of the rock = 600g = 0.6 kg

v: tangential velocity of the Honda = 4m/s

r: radius of the Honda = 50cm = 0.5m

You replace the values of m, r and v in the equation for Fc:

$F_c=(0.6kg)\frac{(4m/s)^2}{0.5m}\\\\F_c=19.2N$

hence, the force has a magnitude of 19.2 N

If the rock would have more mass the centripetal force would be higher

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3 years ago