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2 years ago

Tearing of paper is said to be a change that cannot be reversed. What about paper recycling? Explain.

Physics

1 answer:

Step2247 [10]2 years ago

6 0

Answer:

Recycling of paper cannot be reversed thus making it an irreversible change

Explanation:

When we recycle paper an entirely new product can be made which cannot be changed back to paper

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A 44 kg block lies on a horizontal frictionless surface. A horizontal force of 110 N is applied to the block. (a) Determine the

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3 years ago

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2 years ago

How long will it take you to pass a truck at 60 mph with oncoming traffic?

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3 years ago

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Find our the total distance between those 2 womens after 100 seconds. Refer the image for the full question ASAP. Give me a comp

diamong [38]

<h3>Given</h3>

$\small\bf\red{First\: Women}\begin{cases}\sf{Initial\: Velocity\: =\: 15m/s}\\\sf{Time\: Taken\: = 100\: seconds}\end{cases}$

$\small\bf\green{Second\: Women}\begin{cases}\sf{Initial\: Velocity\: =\: 20m/s}\\\sf{Time\: Taken\: = 100\: seconds}\end{cases}$

$\:\:\:\:\bullet\:\:\sf{Distance \: between \:them \:after \:{\sf{\blue{100 \:seconds}}}} \\$

<h3>Solution </h3>

$\\→\:\:\:\sf Distance\: travelled \:by \:1st \:women\: = \: Velocity \times Time\:taken$

$→\:\:\:\sf 15 \times 100$

$→\:\;\:\sf 1500m$

$→\:\:\:\sf s_{1} = {\sf{\red{1500m}}} \\ \\$

$\Rightarrow\:\:\:\sf Distance \:travelled \:by\: 2nd \:women\: = \: Velocity \times Time\:taken$

$\Rightarrow\:\:\:\sf 20 \times 100$

$\Rightarrow\:\:\:\sf 2000m$

$\Rightarrow\:\:\:\sf s_{2} = {\sf{\purple{2000m}}} \\ \\$

$\small{\underline{\bf{Now, \:Distance \:between \:them\: =\: s_{2} - s_{1}}}_{}}$

$\hookrightarrow\:\:\:\sf 2000 - 1500$

$\hookrightarrow\:\:\:\bf \pink{500m} \\ \\$

${\underline{\bf{Hence, }}}$

Total Distance between them after $\bf{100 \:seconds}$ is $\bf\orange{500m}$

3 0

3 years ago

An electrically neutral model airplane is flying in a horizontal circle on a 2.0-m guideline, which is nearly parallel to the gr

amm1812

Answer:

q=3.5*10^-4

Explanation:

<u>concept:</u>

The force acting on both charges is given by the coulomb law:

F=kq1q2/r^2

the centripetal force is given by:

Fc=mv^2/r

The kinetic energy is given by:

KE=1/2mv^2

<u>The tension force:</u>

<u><em>when the plane is uncharged </em></u>

T=mv^2/r

T=2(K.E)/r

T=2(50 J)/r

T=100/r

<u><em>when the plane is charged </em></u>

T+k*|q|^2/r^2=2(K.E)charged/r

100/r+k*|q|^2/r^2=2(53.5 J)/r

q=√(2r[53.5 J-50 J]/k) √= square root on whole

q=√2(2)(53.5 J-50 J)/8.99*10^9

q=3.5*10^-4

5 0

3 years ago