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3 years ago

The farmer driving this tractor is spreading pesticides on the crops. What type of pollution is this an example of?

Physics

2 answers:

Fudgin [204]3 years ago

8 0

Nonenvironmental source

White raven [17]3 years ago

4 0

Answer:

<u>Option-(D):</u> The farmer driving this tractor is spreading pesticides on the crops is considered as the non-environmental source of pollution.

Explanation:

Pollution is the imbalance in the over all elements of the environment(i.e biosphere and lithosphere etc). While, some of the pollutants are non-environmental that are not related to any sort of the environment factors. But, they are added intentionally due to the fact that people take the planet and its resources all for granted and these elements then disturbs the whole balance of the environment.

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A ball is dropped from a building of height h. Assume the ball starts from rest and that air friction can be ignored. Derive an

agasfer [191]

Answer:

$t=\sqrt{h/g}$

Explanation:

We use the kinematics equation to solve this question:

$y(t)=y_{o}+v_{o}t+1/2*a*t^{2}$

$v_{o}=0$ because the ball is dropped

$a=-g$ the acceleration is the gravity, negative because it points downwards

$y_{o}=h$ initial height

$y(t)=h/2$ final height

So:

$h/2=h-1/2*g*t^{2}$

$t=\sqrt{h/g}$

8 0

3 years ago

Which statement is true about a pseudoscientific idea? A It is biased in its results. b It can be tested and observed. c It can

jeka94

Answer:

It can be replicated and verified.

Explanation:

Given that,

The following statements about a pseudoscientific idea.

(a). It is biased in its results.

(b). It can be tested and observed.

(c). It can be replicated and verified.

(d). It is improved with new information.

We know that,

Pseudo science :

In a pseudoscience, such as statements, trusts and facts about whom it is said these are scientific and logical but these statements is anomalous through the scientific method.

So, we can say that the statement is true about a pseudoscientific idea that is It can be replicated and verified

Hence, It can be replicated and verified.

(c) is correct option.

5 0

3 years ago

Which best describes a concave lens?

-Dominant- [34]

Answer:

Explanation:

Concave lens also called as diverging lens i.e. it diverges ray of light coming towards it.

Concave lens is thicker at the edges and thinner at the center.

Concave lens formed the virtual image of the object i.e. it cannot be trace on screen. This lens is used to treat the nearsightedness or myopia in which a person is unable to see the far object clearly.

4 0

3 years ago

Nearly all liquids and solids are nearly opaque to radiation at nearly all wavelengths. why is that

anastassius [24]

As radiation enters a solid or liquid, the light waves are absorbed and reflected by the atoms. the resulting reflection from an atom can be in any direction and is random. you can understand opacity in terms of the scattering of radiation. The more opaque, the more scattering.

(The truth is far more complicated than this, check out Richard Feynmans lectures on "Quantum Electro Dynamics" to learn the reality of it. )

3 0

3 years ago

According to the quantum theory of radiation,

masya89 [10]

Answer:

Option B

Explanation:

According to quantum theory of radiation electromagnetic field or electromagnetic radiation( like light) produce by accelerated charge object and the quantum of EM radiations is photon which has discrete energy. So, EM field can have only certain values of total energy and no other value due the discrete nature of the energy of photon. Hence option B is correct

4 0

3 years ago