4 years ago

Does a mirror work because of refraction

Physics

2 answers:

vichka [17]4 years ago

5 0

A mirror works from reflection. Not refraction. Easy stuff c'mon

Semenov [28]4 years ago

3 0

No. A mirror works because of reflection.

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Alex73 [517]

<h2>Ratio of free fall acceleration of Tokyo to Cambridge = 0.998</h2>

Explanation:

We know the equation

$T=2\pi \sqrt{\frac{l}{g}}$

where l is length of pendulum, g is acceleration due to gravity and T is period.

Rearranging

$g= \frac{4\pi^2l}{T^2}$

Length of pendulum in Tokyo = 0.9923 m

Length of pendulum in Cambridge = 0.9941 m

Period of pendulum in Tokyo = Period of pendulum in Cambridge = 2s

We have

$\frac{ g_{\texttt{Tokyo}}}{ g_{\texttt{Cambridge}}}= \frac{\frac{4\pi^2 l_{\texttt{Tokyo}}}{ T_{\texttt{Tokyo}}^2}}{\frac{4\pi^2 l_{\texttt{Cambridge}}}{ T_{\texttt{Cambridge}}^2}}\\\\\frac{ g_{\texttt{Tokyo}}}{ g_{\texttt{Cambridge}}}=\frac{\frac{0.9923}{2^2}}{\frac{0.9941}{2^2}}=0.998$

Ratio of free fall acceleration of Tokyo to Cambridge = 0.998

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3 years ago

What is the meaning of lightyear?

puteri [66]

"Lightyear" is a <em>distance</em> ... specifically, the distance that light travels
through vacuum in one year of 365 days.

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3 years ago

It is hot outside, and the air conditioning has been turned on inside two buildings. Building A's walls contain insulation, but

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Answer:

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3 years ago

I need help ASAP please and thank u very much if u can answer i’m giving a brainliest to btw

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