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Diano4ka-milaya [45]
3 years ago
13

When water (H2O) freezes into ice, some of the properties have changed. What stays the same?

Physics
1 answer:
OverLord2011 [107]3 years ago
8 0

Answer:

A  identity

Explanation:

got it right on edge

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The Electromagnetic spectrum.

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A wall clock has a minute hand with a length of 0.55 m and an hour hand with a length of 0.26 m. Take the center of the clock as
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Answer:

The magnitude of the acceleration of the tip of the minute hand of the clock 1.675\times10^{-6}\ m/s^2.

Explanation:

Given that,

Length of minute hand = 0.55 m

Length of hour hand = 0.26 m

The time taken by the minute hand to complete one revelation is

T= 3600\ sec

We need to calculate the angular frequency

Using formula of angular frequency

\omega=\dfrac{2\pi}{T}

Put the value into the formula

\omega=\dfrac{2\pi}{3600}

\omega=0.001745\ rad/s

We need to calculate the magnitude of the acceleration of the tip of the minute hand of the clock

Using formula of acceleration

a=r\omega^2

Put the value into the formula

a=0.55\times(0.001745)^2

a=1.675\times10^{-6}\ m/s^2

Hence, The magnitude of the acceleration of the tip of the minute hand of the clock 1.675\times10^{-6}\ m/s^2.

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3 years ago
What is the speed of gravity
mojhsa [17]
9.8m per seccond is the speed of gravity if you drop something like a ball from a tower
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Acording to Newton’s second law of motion if a rigid body of unchanging mass is observed accelerating what must be happening
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A force is being applied to the mass.

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Read 2 more answers
Frictional force increases with the increase in the _______________ of the surface.
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Answer:

Frictional force increases with the increase in the roughness of the surface.

Explanation:

You will see that the rougher the surface, the greater the wear and tear.

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