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2 years ago

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SAT

2 answers:

enyata [817]2 years ago

6 0

Answer:

hey

Explanation:

I don't know what you want me to help you with

Naddik [55]2 years ago

5 0

Answer:

HOI

Explanation:

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Class midpoint for 59-65 is

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the midpoint of 59 and 65 is 62

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All of the following are reasons to transfer to a four-year school after

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Which situation is the best example of opportunity cost? A country chooses to produce bananas instead of wheat. A country choose

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Opportunity cost is termed as value of choice. It is the important concept in economics and also the relationship which is between choice and scarcity.

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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

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

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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.

 I hope this is understandable and if my answer helped you please can you give me a brainliest its will really help me and thank you have a nice day!!

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