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2 years ago

A box is against a wall. A person pushes on the box, but the box does not move. Is this

Physics

2 answers:

Serhud [2]2 years ago

7 0

Answer:

it is a force

Explanation:

a force is a push or a pull

Levart [38]2 years ago

4 0

Answer:

Yes, this is an example of a force because a force is a push or pull

Explanation:

Since the person is adding force to push the box.

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A 5 kg bucket is lifted from the ground into the air by pulling in 10 meters of rope with linear density of 2 kg/m at a constant

iren [92.7K]

Answer:

Workdone W = 1465.1 J

Explanation:

The weight of the water = density × volume

weight of the water = 1000 kg/m³ × 100 cm³

weight of the water = 1000 kg/m³ × 0.0001 m³

weight of the water = 0.1 kg

weight of the bucket = 5 kg

weight of the rope = $2*10- 2x\\\\$

= $20- 2x$

Leakage = $\frac{0.1}{10} * x$

= $0.01 x$

Total weight = $5 + 20 - 2x - 0.01 x$

= $25 - 2.01 x$

Force = wg

Force = ( $25 - 2.01 x$ )g

Force = 9.8 ( $25 - 2.01 x$ )

Finally; the amount of work spent in lifting the bucket, rope, and water is calculated as follows:

$W = \int\limits^{10}_0 {(25-2.01 x)} \, 9.8 dx \\\\W = 9.8 (25x - \frac{2.01x^2}{2}})^{10}__0\\\\$

$W = 9.8 (25*10-2.01*50)\\\\W = 1465.1 \ \ J$

7 0

3 years ago

Discuss one social problem in the world today. What do you think should be done to help solve this social problem?

Lemur [1.5K]

The most common Social Problems are using of drugs, child abuse, crime, corruption and many more problems.

<h3>Discuss Social Problem in the world today. What do you think should be done to help solve this social problem?</h3>

There are many social problems in the world today, but the biggest social problems which very common in our today's society is; unemployment, migration, crime, delinquency, drug abuse, child abuse, crime against women, crime against children, discrimination on the basis of Caste, class & religion , corruption, family and health problems, education, political, economic, cultural and environment issues. The most common social problem which is related with the health is smoking, drinking alcohols, heroin, snuph, theft and many more problems.

We can fix all the above problems by making rules and regulations which should be implement on the peoples.

So we can conclude that: The most common Social Problems are using of drugs, child abuse, crime, corruption and many more problems.

Learn more about Social Problems here: brainly.com/question/600372

#SPJ1

5 0

1 year ago

A material kept at high temperature is seen to emit photons with energies of 0.3 eV, 0.5 eV, 0.8 eV, 2.0 eV, 2.5 eV, and 2.8 eV.

sukhopar [10]

Answer:

0.3 eV, 0.5eV,, 8 eV, 2.0eV, 2.50 eV, 2.8 eV

Explanation:

In a given material the emission and absorption spectra are equivalent, for which the emission spectrum observed at high temperature for the material corresponds to the transition between the energy states of the material, the process is that the electrons exist from the ground state until an excited state and after a short period of time or these electrons relax emitting photons.

In the absorption process, the material is at low temperature, ideally at A = 0K, whereby all states are in the ground state and all excited states are empty. therefore it can absorb the beam energy for each transition given from the ground state to each excited edtado.

Consequently, the lines above the absorption oscillate lines coincide with the lines of emotion, this we see lines oscillate at 0.3 eV, 0.5eV,, 8 eV, 2.0eV, 2.50 eV, 2.8 eV

5 0

3 years ago

What is Newtons laws

pogonyaev

<h2>Law 1:</h2><h3>An object already in motion stays in motion, unless acted upon by a force.</h3><h3 /><h2>Law 2:</h2><h3> $f=ma$ </h3><h3>f = forces on an object</h3><h3>m = mass of that object</h3><h3>a = acceleration of that object</h3><h3 /><h2>Law 3:</h2><h3>Everything has an equal and opposite reaction.</h3><h3 /><h3>Hope this helps!</h3>