Answer: 20.4752789138x x 10^23 atoms
To count how many atoms in moles you need to know Avogadro's number. Avogadro's number dictate that for every mole there is 6.022140857 × 10^23 molecule/atoms.
Then 3.4 moles of helium will be 3.4x 6.022140857 x 10^23 atoms= 20.4752789138x x 10^23 atoms
Answer:
<em>n =1.33 revolutions</em>
Explanation:
<u>Uniform Circular Motion</u>
The angular speed can be calculated in two different ways:

Where:
v = tangential speed
r = radius of the circle described by the rotating object
Also:

Where:
f = frequency
Solving for f:

Since the frequency is calculated when the number of revolutions n and the time t are known:

We can solve for n:
n=f.t
The particle moves in a circle of r=90 m with a speed v=25 m/s. Thus the angular speed is:


Now we calculate f:


Calculating the number of revolutions:
n = 0.04421*30
n =1.33 revolutions
Answer:
La danza, el movimiento del cuerpo de manera rítmica, generalmente con música y dentro de un espacio determinado, con el propósito de expresar una idea o emoción, liberar energía o simplemente deleitarse con el movimiento en sí. La danza es una forma de arte escénico que consiste en de secuencias de movimiento humano seleccionadas a propósito. Este movimiento tiene un valor estético y simbólico, y es reconocido como danza por artistas y observadores dentro de una cultura particular.
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