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4 years ago

Why do antoms move at different speeds depending pn weather they are in liqids or solids?

1 answer:

3 0

Liquid matter has atoms that move moderately freely; this is shown that whenever you pour water into a cup, it fills the shape.
Solids on the other hand, have atoms that basically don't move; thus is because the item is purely compact, and, for contrast, putting a rock in a cup wouldn't fill the shape of the cup, it would just lie there as it's original form.

Hope this helps!

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Subscribe to me on you-tube for brainliest custom link since u cant do a you-tube link :/

BartSMP [9]

Answer:

nani

Explanation:

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3 years ago

Read 2 more answers

A figure skater begins spinning counterclock-

wlad13 [49]

Answer:

Angular acceleration, $\alpha =0.64\ rad/s^2$

Explanation:

Given that,

Initial angular velocity, $\omega_i=4.67\ rad/s$

The final angular velocity, $\omega_f=7.37\ rad/s$

Time, t = 4.2 s

We need to find her average angular acceleration during this time interval. Acceleration is the rate of change of velocity. So,

$\alpha =\dfrac{\omega_f-\omega_i}{t}\\\\\alpha =\dfrac{7.37-4.67}{4.2}\\\\\alpha =0.64\ rad/s^2$

So, her average angular acceleration is $0.64\ rad/s^2$ .

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3 years ago

In young Goodman’s Brown hawthornes reveals his feelings about his Puritan ancestors when

riadik2000 [5.3K]

Answer:

In "Young Goodman Brown," Hawthorne reveals his feelings about his Puritan ancestors <em><u>when the dark man reveals that he helped Brown's forebears persecute others.</u></em>

Explanation:

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3 years ago

You have been called to testify as an expert witness in a trial involving a head-on collision. Car A weighs 690.0 kg and was tra

kirza4 [7]

Answer:

115 km/h

Explanation:

$m_1$ = Mass of car A = 690 kg

$m_2$ = Mass of car B = 520 kg

g = Acceleration due to gravity = 9.81 m/s²

a = Acceleration

u = Initial velocity

v = Final velocity

$a=\mu g\\\Rightarrow a=0.75\times 9.81\\\Rightarrow a=7.3575\ m/s^2$

$v^2-u^2=2as\\\Rightarrow v=\sqrt{2as+u^2}\\\Rightarrow v=\sqrt{2\times 7.3575\times 6+0^2}\\\Rightarrow v=9.396\ m/s$

$m_1u_1 + m_2u_2 =(m_1 + m_2)v\\\Rightarrow u_1=\frac{(m_1 + m_2)v-m_2u_2}{m_1}\\\Rightarrow u_1=\frac{(690+520)9.396-520\times -\frac{74}{3.6}}{690}\\\Rightarrow u_1=31.96\ m/s$

Converting to km/h

$31.96\times 3.6=115.056\ km/h$

Initial velocity of car A = 115 km/h

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3 years ago

A rock from Mars experiences a 263% increase in its weight once it arrives on Earth. What accounts for this increase in weight?

leva [86]

The mass of Mars is smaller than that the mass of Earth, therefore the acceleration of gravity on Mars is much less than that the acceleration of gravity of the Earth.

The weight of an object is directly proportional to the magnitude of the gravitational acceleration of the planet where it is.

In this case, the gravitational acceleration in Mars is 3.711 m/s² and that of the planet Earth is 9.807 m/s².

The acceleration of gravity on Earth is 2.63 times greater than that the acceleration of gravity on Mars. This explains that the same object weighs 263% more on earth

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3 years ago