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Neporo4naja [7]

3 years ago

15

Recycling one ton of paper is the equivalent of approximately how much of the following? a.) all of the below b.) 460 gallons of

oil c.) 6950 gallons of water d.) 590 pounds of air pollution

1 answer:

Bad White [126]3 years ago

3 0

I think the answer is a

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Which of the following is not a heterogeneous mixture

Bond [772]

Answer:

apples juice, salad oil, salt water

Explanation:

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2 years ago

What is the best way to remember vocabulary

nirvana33 [79]

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3 years ago

Rank the following different combinations of m and r on the basis of the angular speed of the merry-go-round after the sandbag "

Vikentia [17]

The angular speed simply describes the way that things turn which is described in units such as revolutions per minutes, degree per seconds, etc.

<h3>What is angular speed?</h3>

Your information is incomplete as the diagram isn't provided. Therefore, an overview will be given.

It should be noted that angular speed simply means the measure of how fast the central angle of the rotating body changes with respect to time.

The angular speed is simply calculated by multiplying the angle of rotation and the time taken to complete the rotation.

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2 years ago

suppose you push a hockey puck of mass m across frictionless ice for a time 1.0 s, starting from rest, giving the puck speed v a

saul85 [17]

Answer: Twice the previous time would be taken to reach the same speed v with the puck of mass 2m.

Explanation:

Let a Force pushes the hockey puck of mass m.

Then acceleration, a= \frac{F}{m}a=mF

From the equation of motion,

\begin{gathered}\➪ v=u+at\\ v=0+\frac{F}{m}\Delta t\end{gathered}⇒v=u+atv=0+mFΔt ......(1)

In the second case, when mass is 2m, then acceleration,

a'=\frac{F}{2m}a′=2mF

and t' is the time taken.

The final speed is v,

\begin{gathered}\➪ v=0+ a't'\\ \➪ \frac {F}{m}\Delta t=\frac{F}{2m}t'\\ \➪ t'= 2\Delta t\end{gathered}⇒v=0+a′t′⇒mFΔt=2mFt′⇒t′=2Δt using equation (1)

Hence, it would take two times the previous amount of time to push the pluck of double mass.

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