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1 year ago

Why do natural polymers not pose as much of an issue in landfills as synthetic polymers?

Physics

1 answer:

viva [34]1 year ago

8 0

Answer:

Most polymers, including poly(ethene) and poly(propene) are not biodegradable . This means that microorganisms cannot break them down, so they: cause a litter problem if disposed of carelessly. last for many years in landfill sites.

Explanation:

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Based on the diagram below, rank the three objects from least dense to most dense

Elodia [21]

I believe it is c because the least dense would be on top. so x is least dense, then y, and then z

6 0

3 years ago

Explain what physicists mean when they say that the de Broglie wavelength relates to the probability distribution wave function.

Ksju [112]

Answer:

Because it unites particle and wave nature.

Explanation:

De Broglie wavelength can be defined as the,

$\lambda =\frac{h}{mv}$

Here, h is planks constant, m is the mass of electron, v is the velocity of electron.

Since the de Broglie wavelength can behave like the photon wavelength with respect to the momentum

It unites particles and waves nature ,so De Broglie wavelengths is probability waves associated with the wave function according to physicists.

7 0

2 years ago

A 5,400 W motor is used to do work. If the motor is used for 640 s, about how much work could it do?

Gemiola [76]

Answer:

3,500,000 J

Explanation:

WORK = POWER * TIME

WORK= 5400 * 640

=6456000 J = 3,500,000 J

4 0

3 years ago

Please help brainliest ASAP...........

pantera1 [17]

Answer:

I believe it is gender

Explanation:

8 0

3 years ago

Read 2 more answers

Imagine a small child whose legs are half as long as her parent’s legs. If her parent can walk at maximum speed V, at what maxim

AnnZ [28]

Answer:

$\boxed{v=\frac {V}{\sqrt {2}}}$

Explanation:

We know that speed is given by dividing distance by time or multiplying length and frequency. The speed of the father will be given by Lf where L is the length of the father’s leg ad f is the frequency.

We know that frequency of simple pendulum follows that $f=\frac {1}{2\pi} \sqrt {\frac {g}{l}}$

Now, the speed of the father will be $V=Lf= L\times (\frac {1}{2\pi} \sqrt {\frac {g}{l}})$ while for the child the speed will be $v=\frac {L}{2}\times (\frac {1}{2\pi} \sqrt {\frac {g}{0.5l}})$

The ratio of the father’s speed to the child’s speed will be

$\frac {V}{v}=\frac {\frac {L}{2}\times (\frac {1}{2\pi} \sqrt {\frac {g}{0.5l}})}{ L\times (\frac {1}{2\pi} \sqrt {\frac {g}{l}})}\\\frac {V}{v}=\frac {\sqrt {2}}{2}\\\boxed{v=\frac {V}{\sqrt {2}}}$

8 0

2 years ago