4 years ago

The number of _______ in an atom of an element is the element's atomic number.

Physics

1 answer:

Marizza181 [45]4 years ago

8 0

The number of protons in an atom is the elements atomic number.

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3 years ago

A spinning flywheel has rotational inertia I = 474.0 kg·m2. Its angular velocity decreases from 26.2 rad/s to zero in 204.0 s du

Flura [38]

Answer:

$\tau = 60.88 N.m$

Explanation:

given,

rotational inertia, I = 474.0 kg·m²

decrease in angular velocity

ω₁ = 26.2 rad/s ω₂ = 0 rad/s

time = 204 s

torque = ?

$\tau = I \alpha$

$\alpha = \dfrac{\omega_1-\omega_2}{t}$

$\alpha = \dfrac{26.2-0}{204}$

α = 0.128 rad/s²

$\tau = I \alpha$

$\tau = 474\times 0.128$

$\tau = 60.88 N.m$

frictional torque acting by the flywheel is equal to 60.88 N.m

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3 years ago

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Licemer1 [7]

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The zig-zag line represents a resistor, and the two little circles
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3 years ago

A girl kicks a blue ball with a velocity of 20.0 m/s at 65.0o. How long is it in the air?

34kurt

Explanation:

t = usin©/g

Where t is the time to reach the maximum height

Time spent in air is T = 2t

T = 2 x 20 x sin 65°/ 9.8

T = 3.69s

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3 years ago

A wire that is 0.36 meters long moves perpendicularly through a magnetic field at a speed of 0.21 meters/second. The induced emf

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