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NNADVOKAT [17]
3 years ago
13

Using your Periodic Table, which element below has the smallest atomic radius? A.) Sodium, B.) Chlorine, C.) Phosphorus, D.) Iro

n
Physics
1 answer:
belka [17]3 years ago
4 0

Chlorine has the smallest atomic radius since the atomic radius decreases as you travel to the right and up

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The answer is B; 10%

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What happens when two positive charges are near each other?
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If two positive charges are near each other they will repel each other.
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Explanation:

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A racing car has a mass of 1720 kg. the acceleration of gravity is 9.8 m/s 2 . what is its kinetic energy if it has a speed of 1
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3 years ago
The tub of a washer goes into its spin-dry cycle, starting from rest and reaching an angular speed of 5.0 rev/s in 9.0 s. At thi
sertanlavr [38]

Answer

given,

angular speed of the tub = 5 rev/s

time = 9 s

he tub slows to rest  =  15.0 s

the angular acceleration

\omega_f - \omega_i = \alpha t

\alpha = \dfrac{5-0}{9}

\alpha = 0.556 rev/s^2

angular displacement

\theta_1 = \omega_i \ t + \dfrac{1}{2}\alpha t^2

\theta_1 = \dfrac{1}{2}\times 0.556 \times 9^2

\theta_1 = 22.52 rev

\theta_1 = 23 rev

case 2

now,

\omega_i = 5 rev/s

\omega_f = 0 rev/s

time = 15 s

the angular acceleration

\omega_f - \omega_i = \alpha t

\alpha = \dfrac{0-5}{15}

v\alpha =-0.333 rev/s^2

angular displacement

\theta_2 = \omega_i \ t + \dfrac{1}{2}\alpha t^2

\theta_2 =5\times 15 -\dfrac{1}{2}\times 0.333 \times 15^2

\theta_2 = 37.875 rev

\theta_2 =38 rev

total revolution in 24 s

= 23 + 38

= 62 revolution

8 0
3 years ago
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