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lana66690 [7]
3 years ago
5

Why e-waste is a problem and present one possible way of mitigating the growing e-waste problem.

Biology
1 answer:
Ad libitum [116K]3 years ago
4 0
Ewaste is a problem because it contains many hazardous chemicals like mercury, lead and cadmium which could seep in to the soil and eventually to the groundwater. This would lead to contamination of the drinking water. The most important thing to remember would be to separate this type of waste with the others. It would be better if you sell it or give it for reuse. Also, you can send it to a recycler that knows what to do with these wastes.
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Read 2 more answers
A steel bar has a mass of 4,000 kilograms and a volume of 0.5 cubic meters . Calculate its density. Write your answer as a whole
mixer [17]

The equation for density is:


D=\frac{m}{V}


where the mass is in grams and the volume is in cm^{3}.


We are given 4,000 kilograms, and we know that there are 1,000 grams in 1 kilogram, so we need to multiply to convert to grams:


4,000*1,000=4,000,000g


We are also given 0.5 m^{3}, and we need to convert to cm^{3}. We know that there are 100 cm in 1 m, and since we are talking about cubic volume, we must also raise 100 to the 3rd power: 100^{3}=1,000,000cm. So now we know that there are 1,000,000 cm^{3} in 1 m^{3}. We need to then multiply 1,000,000 cm by 0.5 in order to find the volume that was given in the question:


1,000,000*0.5=500,000cm^{3}


So now that we have the correct units, let's plug them into the equation:


D=\frac{4,000,000g}{500,000cm^{3}}


D=\frac{8g}{cm^{3}}


So now we know that the density is 8g/cubic centimeter.

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