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3 years ago

What are the damages or effects of sewage dumps into natural water sources???

Physics

2 answers:

masha68 [24]3 years ago

5 0

Answer:

Sewage dumps pollute our waterways causing death of marine life, water pollution, and disease.

Explanation:

Sewage dumps. bring disease or death to our ecosystems

marshall27 [118]3 years ago

3 0

Answer:

Water is an important element that is needed by all living organisms in order to survive. All living beings depend upon water.

The water resources have been constantly depleting due to human activities by throwing sewages and garbages into the water bodies. As a result of which, the water is being contaminated.

The effects of sewage dumps into water bodies are as follows-

(a) It degrades water quality.

(b) The aquatic environment is disturbed, as a result of which the number of marine organisms decreases.

(c) The air also is polluted because of the release of pungent smells from the waste materials.

(d) It can cause various types of diseases.

(e) It also affects aquatic plants.

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CNA Secondary and Preparatory School

ale4655 [162]

Answer:

2:13 2) cm' c6462.

Explanation:

3 0

3 years ago

A girl is shown at position A on a swing when the seat is directly below the support bar. The seat is then at height A as shown

MrRa [10]

Answer:

1. The potential energy of the swing is the greatest at the position B.

2. As the swing moves from point B to point A, the kinetic energy is increasing.

Explanation:

Even though the syntax of the text is not completely clear, likely because it accompanies a drawing that is not included, it results clear that the posittion A is where the seat is at the lowest position, and the position B is upper.

The gravitational potential energy is directly proportional to the height of the objects with respect to some reference altitude. Thus, when the seat is at the position A the swing has the smallest potential energy and when the seat is at the position B the swing has the greatest potential energy.

Regarding the forms of energy, as the swing moves from point B to point A, it is going downward, gaining kinetic energy (speed) at the expense of the potential energy (losing altitude). When the seat passes by the position A, the kinetic energy is maximum and the potential energy is miminum. Then the seat starts to gain altitude again, losing the kinetic energy and gaining potential energy, up to it gets to the other end,

7 0

3 years ago

Read 2 more answers

1.- La gráfica muestra la variación de la aceleración a de un objeto con el tiempo t.

STatiana [176]

Answer:

Te ayudo con una de prueba $

Explanation:

5 0

3 years ago

Determine the critical crack length for a through crack contained within a thick plate of 7150-T651 aluminum alloy that is in un

Mila [183]

Explanation:

Formula to determine the critical crack is as follows.

$K_{IC} = \gamma \sigma_{f} \sqrt{\pi \times a}$

$\gamma$ = 1, $K_{IC}$ = 24.1

[/tex]\sigma_{y}[/tex] = 570

and, $\sigma_{f} = 570 \times \frac{3}{4}$

= 427.5

Hence, we will calculate the critical crack length as follows.

a = $\frac{1}{\pi} \times (\frac{K_{IC}}{\sigma_{f}})^{2}$

= $\frac{1}{3.14} \times (\frac{24.1}{427.5})^{2}$

= $10.13 \times 10^{-4}$

Therefore, largest size is as follows.

Largest size = 2a

= $2 \times 10.13 \times 10^{-4}$

= $20.26 \times 10^{-4}$

Thus, we can conclude that the critical crack length for a through crack contained within the given plate is $20.26 \times 10^{-4}$ .

4 0

3 years ago

Una motocicleta viaja con una velocidad constante de 72m/s calcula su velocidad en km/h

Juliette [100K]

Answer:

Entonces la velocidad de la motocicleta es $259.18 \frac{km}{h}$

Explanation:

La regla de tres simple es una operación que ayuda a resolver rápidamente problemas de proporcionalidad, teniendo tres valores conocidos y una incógnita.

Dos magnitudes son directamente proporcionales cuando al multiplicar o dividir una de ellas por un número, la otra queda multiplicada o dividida respectivamente por el mismo número. En otras palabras, dos magnitudes son directamente proporcionales si cuando aumenta una magnitud, también lo hace la otra en la misma proporción o cuando disminuye una magnitud, también lo hace la otra en la misma proporción.

Para resolver una regla directa de tres cuando las magnitudes son directamente proporcionales, se debe seguir la siguiente fórmula:

a ⇒ b

c ⇒ x

Entonces $x=\frac{c*b}{a}$

La regla directa de tres simple es la regla que se aplica en este caso donde hay un cambio de unidades. Para realizar esta conversión de unidades, primero debe saber que 1 m = 0.001 km. Entonces, si 0.001 km es 1 m, ¿cuántos kilómetros son 72 m?

$km=\frac{72 m*0.001 km}{1 m}$

km=0.072

Entonces:

$72\frac{m}{s} =\frac{72 m}{s} =\frac{0.072 km}{s}$

Siendo 1 s=0.0002778 h:

$72\frac{m}{s} =\frac{72 m}{s} =\frac{0.072 km}{s}=\frac{0.072 km}{0.0002778 h}=259.18 \frac{km}{h}$

Entonces la velocidad de la motocicleta es $259.18 \frac{km}{h}$

8 0

3 years ago