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2 years ago

Bohr found experimental evidence for his atomic model by studying

Physics

2 answers:

Alona [7]2 years ago

7 0

Answer:

Bohr found experimental evidence for his atomic model by studying <em><u>line spectra</u></em>.

Elden [556K]2 years ago

5 0

Answer:

Bohr found experimental evidence for his atomic model by studying line spectra.

Line Spectra is plural of a line spectrum and a line spectrum is an emission of light, sound, or other radiation, composed of a number of discrete frequencies or energies (a spectrum).

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Answer:

Explanation:

2.3 kg·m/s²

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2 years ago

Pa help po science po yan pang grade 7

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Answer:

table 1:

1. 100/15 = 6.7 m/s

2. 100/12 = 8.3 m/s

3. 100/9 = 11.1 m/s

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2 years ago

The loudness l of a sound, measured in decibels, is given by l=10log10r, where r is the sound's relative intensity. suppose one

marishachu [46]

Answer

given,

I is the loudness of sound

I = 10 Log₁₀ r

r is relative intensity

at when relative intensity is 10⁶

I = 60 dB

how much louder when 100 people would be talking together

I = 10 Log₁₀ r

I = 10 Log₁₀ (10⁶ x 100)

I = 10 Log₁₀ (10⁸)

I = 80 dB

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3 years ago

Consider a father pushing a child on a playground merry-go-round. The system has a moment of inertia of 84.4 kg.m^2. The father

Sophie [7]

Answer:

Explanation:

Given that:

the initial angular velocity $\omega_o = 0$

angular acceleration $\alpha$ = 4.44 rad/s²

Using the formula:

$\omega = \omega_o+ \alpha t$

Making t the subject of the formula:

$t= \dfrac{\omega- \omega_o}{ \alpha }$

where;

$\omega = 1.53 \ rad/s^2$

∴

$t= \dfrac{1.53-0}{4.44 }$

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Using the formula:

$\omega ^2 = \omega _o^2 + 2 \alpha \theta$

here;

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∴

$\theta = \dfrac{\omega^2 - \omega_o^2}{2 \alpha }$

$\theta = \dfrac{(1.53)^2 -0^2}{2 (4.44) }$

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Recall that:

2π rad = 1 revolution

Then;

0.264 rad = (x) revolution

$x = \dfrac{0.264 \times 1}{2 \pi}$

x = 0.042 revolutions

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The torque = F * r

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$Torque( \tau) = I \alpha \\ \\ Since( I \alpha) = 324 \ Nm. \\ \\ Then; \\ \\ \alpha= \dfrac{324}{I}$

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For re-tardation; $\alpha=-3.84 \ rad/s^2$

Using the equation

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$t= \dfrac{0-1.53}{ -3.84 }$

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2 years ago

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torisob [31]

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