3 years ago

Someone please help me

Physics

2 answers:

Murrr4er [49]3 years ago

6 0

Answer:

A: any mirror.

hope it's help you

Serhud [2]3 years ago

4 0

A mirror will do this

You might be interested in

The effective nuclear charge for an atom is less than the actual nuclear charge due to

Dmitrij [34]

Answer:

Repulsion

Explanation, due to this repulsion with the proton and the electron, each electron experiences a nuclear charge that is somewhat less than the actual nuclear charge.

3 0

4 years ago

A thin, rectangular sheet of metal has mass M and sides of length a and b. Find the moment of inertia of this sheet about an axi

Lubov Fominskaja [6]

Answer:

The moment of inertia is $I=\frac{M}{12} a^{2}$

Explanation:

The moment of inertia is equal:

$I=\int\limits^a_b {r^{2} } \, dm$

If r is $-\frac{a}{2}$

and $dm=\frac{M}{a} dr$

$I=\int\limits^a_b {r^{2}\frac{M}{a} } \, dr\\a=\frac{a}{2} \\b=-\frac{a}{2}$

$I=\frac{M}{a} \int\limits^a_b {r^{2} } \, dr\\\\I=\frac{M}{a} (\frac{M}{3} )_{b}^{a}\\ I=\frac{M}{3a} (\frac{a^{3} }{8} +\frac{a^{3} }{8} )\\I=\frac{M}{12} a^{2}$

7 0

4 years ago

If earth had no atmosphere , would a falling object ever reach terminal velocity?

Bas_tet [7]

The right answer is no.

6 0

3 years ago

In which type of circuit does a charge have only one loop to flow through

worty [1.4K]

That would be a series circuit

5 0

4 years ago

Conclusion 1. why do engineers place tolerances on dimensions? 2. what are the three types of tolerances that appear on dimensio

Butoxors [25]

Tolerance enables the engineer to be informed when somethings requires replacement or if there is a drawback with too much war.

The three types of tolerances that appear on dimensioned drawings are limit, bilateral, and unilateral.

<span>General tolerances are normally found in the information blocks of the blueprint while a specific tolerance is noted for certain areas of the blueprint.</span>

7 0

4 years ago