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saw5 [17]
2 years ago
6

Use Newton’s first law to explain why a book on a desk does not move

Physics
2 answers:
aleksley [76]2 years ago
6 0

Answer:

The book does not move because all the forces acting on the book are in equilibrium, creating a net force of zero magnitude on the book. Since the net force on the book is zero, this means that the book will remain in its present state of motion (which is that the book is motionless).

Explanation:

Newton's first law states that all body will remain in  their present state of motion unless acted upon by an external force. In order word, a moving body should continue moving forever, and a body at rest should remain like that forever, unless they are acted upon by a force to either cause them to stop stop or to start moving respectively.

rewona [7]2 years ago
5 0

Answer:

nothing moves if anything other doesn't move it.

natural position of things is the resting

Explanation:

yeah that's it

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A student performs this experiment and measures the bar to have a mass of 150g and length of 36cm. What is the moment of inertia
Ugo [173]

Answer:

The moment of inertia of the bar is 45\times10^{-4}\ kg-m^2

Explanation:

Given that,

mass of bar = 150 g

Length l = 36 cm

We need to calculate the moment of inertia of the bar

Using formula of moment inertia

I=\dfrac{1}{12}Ml^2

Where,

M = mass of the bar

L = length of the bar

Put the value into the formula

I=\dfrac{1}{12}\times150\times10^-3\times36\times10^{-2}

I=45\times10^{-4}\ kg-m^2

Hence, The moment of inertia of the bar is 45\times10^{-4}\ kg-m^2

4 0
3 years ago
HELP ME!!! NO LINKS!!! Compare and Contrast the scientific definitions of theory and law. Explain why the first law of thermodyn
Nataly_w [17]
The date the model was published.

The use of “laws” originated prior to science splitting from natural philosophy. There’s an implicit assumption that God as the creator laid down both moral and natural laws, with the theologian concerned with the former and the natural philosopher concerned with the latter.

“Theory” begins to take hold in the late 1700s and, very roughly speaking, is used to describe more complex models. “Law” eventually became nearly archaic, although still used to describe very pithy models (Amdahl’s Law, Gustafson’s Law).

The word “model” is gradually superseding both of them.

People have tried to come up with hard-and-fast rules to distinguish them, but scientists are unruly beasts, and use whatever language suits them in the moment.
3 0
2 years ago
what happens to the average kinetic energy of the particles in a sample of matter as the temperature?
Basile [38]

Answer:Increases

Explanation:

As the temperature increases average kinetic energy of particle is increases.

As the temperature increases molecules started to vibrate at higher frequency which causes to rise in temperature. Mathematically, average kinetic energy is given by

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8 0
3 years ago
A wire 2.80 m in length carries a current of 4.20 A in a region where a uniform magnetic field has a magnitude of 0.260 T. Calcu
klio [65]

Answer:.

F = 3.0576sinθ

For any value of θ < 180

Explanation:

Generally, F = BILsinθ

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Therefore,

B = 0.260 T, L = 2.80 m

I = 4.20 A

: F = 0.260 × 4.20 × 2.80sinθ

∴ F = 3.0576sinθ

4 0
3 years ago
A rectangular pool has a volume of 375 m3. the pool is 10 m long and 5 m wide. how deep is the pool? 7.5 m 3,750 m 75 m
likoan [24]
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6 0
3 years ago
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