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nata0808 [166]
3 years ago
11

Acid rain contributes to soil erosion. Acid rain can be caused by 

Physics
2 answers:
elixir [45]3 years ago
6 0
It can be caused by chemical reactions like sulfur dioxide and nitrogen oxides. These can rise very high in the atmosphere. They can mix in with oxygen and rain and thats where you get your acid rain from

I hope this is helpful <span />
Anastaziya [24]3 years ago
6 0

it can be caused by chemicals released into the air by motor vehicles.

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What happens to potential energy when a skier goes down the hill? <br> A. Decrease <br> B. Increase
luda_lava [24]

Question: What happens to potential energy when a skier goes down the hill?

Answer: Decrease

Explanation: As the skier begins the descent down the hill potential energy is lost and kinetic energy is going to start acting

question answered by

(jacemorris04)

4 0
3 years ago
A particle’s position is ~r = (ct2 − 2dt3 )iˆ+ (2ct2 − dt2 )jˆ, where c and d are positive constants. Find the expressions for t
Mars2501 [29]

The velocity of the particle is given by the derivative of the position vector:

\vec v = \dfrac{\mathrm d\vec r}{\mathrm dt} = (2ct-6dt^2)\,\vec\imath + (4ct-2dt)\,\vec\jmath

(a) The particle is moving in the <em>x</em>-direction when the <em>y</em>-component of velocity is zero:

4ct-2dt = 2t (2c - d) = 0 \implies t=0

But we want <em>t</em> > 0, so this never happens, unless 2<em>c</em> = <em>d</em> is given, in which case the <em>y</em>-component is always zero.

(b) Similarly, the particle moves in the <em>y</em>-direction when the <em>x</em>-component vanishes:

2ct-6dt^2 = 2t (c - 3dt) = 0 \implies t=0 \text{ or }c-3dt = 0

We drop the zero solution, and we're left with

c-3dt = 0 \implies c=3dt \implies \boxed{t = \dfrac c{3d}}

In the case of 2<em>c</em> = d, this times reduces to <em>t</em> = <em>c</em>/(6<em>c</em>) = 1/6.

7 0
2 years ago
A violinist is tuning her instrument to concert A (440 Hz). She plays the note while listening to an electronically generated to
Soloha48 [4]

To solve the problem it is necessary to take into account the concepts related to beat frequency, i.e., The number of those wobbles per second.

The equation that describes the beat frequency is

f_{beat} = |f_2-f_1|

For our given case we have that the frequency of the instrument is 440Hz and the Beat frequency is 5Hz therefore,

A) The frequency of the violin would be given by

f_{beat} = |f_2-f_1|

5Hz = |f_2-440Hz|

f_2 = 440 \pm 5

f_2 = 445Hz or 435Hz

B) <em>The violinist must loosen the string.</em> As the tightening increases the frequency, thereby increasing the number of beats from 5 to 6, i. e, on thightening the string, the frequency further increases as high frequency will be produced by short trings.

5 0
3 years ago
Marking as brainliest last attempt
arsen [322]

Answer:

Bullying in the schools has negative effects on individual students and on the school climate as a whole. Bullying can cause long-term problems for both the victims of bullying and the bullies themselves. To explore the effects of bullying on adolescents, we will define bullying, identify the characteristics of bullies and victims, outline the extent and consequences of bullying, and present resources for further information and assistance.

Bullying is any behavior that is initiated by one or more students against a victim or victims that causes physical or psychological intimidation. Bullying behaviors can be classified as either direct (such as teasing, threatening, hitting, or stealing) or indirect (such as rumor spreading or social isolation). Boys typically employed direct methods of bullying, while girls tend to use in direct methods. Either way, behaviors must occur repeatedly overtime to be classified as bullying.

Characteristics of Bullies and Victims

There are specific behaviors that bullies tend to exhibit. The bullies often need to feel powerful and in control. They may feel no remorse when they inflict injury and suffering on others. Bullies tend to defy authority and are likely to break school rules. They seem to have little anxiety and appear to possess high self-esteem. Students who come from homes characterized by physical punishment tend to be more likely to exhibit these types of behaviors.

Victims also tend to exhibit specific characteristics. They are often anxious, insecure, cautious, and have low self-esteem. Victims tend to be socially isolated, and may lack social skills and friends. Because they tend to be weaker than their peers, either physically or socially, victims rarely retaliate against bullies. Students who have close ties with their parents/guardians or who have overprotective parents/guardians are more likely to be victimized by bullies.

3 0
1 year ago
Ceres has an orbital semi-major axis = 2.768 AU. What is Ceres’ orbital period?
Doss [256]

Answer: 4.6 years

Explanation:

According to Kepler’s Third Law of Planetary motion <em>“The square of the orbital period T of a planet is proportional to the cube of the semi-major axis a (size) of its orbit”: </em>

<em />

T^{2}\propto a^{3} (1)  

However, if T is measured in Earth years, and a is measured in astronomical units (unit equivalent to the distance between the Sun and the Earth), equation (1) becomes:  

T^{2}=a^{3} (2)  

Knowing a=2.768 AU and isolating T from (2):  

T=\sqrt{a^{3}} (3)  

T=\sqrt{(2.768 AU)^{3}} (4)  

Finally:  

T=4.6 years This is Ceres' orbital period

6 0
3 years ago
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