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3 years ago

15

Dos láminas, una de cobre y otra de hierro, se encuentran soldadas y empotradas enuna pared como lo muestra la figura 13. Si las

láminas se encuentra a 20 ºC ysabiendo que el coeficiente de dilatación térmica del cobre es mayor que el hierro,entonces se podría predecir que a una temperatura de 100 ºC
A) El extremo libre se doblará hacia A.
B) el extremo libre se doblará hacia B.
C) las láminas se dilatarán sin doblarse.
D) las láminas se contraerán sin doblarse.
E)la lámina de coeficiente de dilatación térmica menorimpedirá la dilatación de la otra.

1 answer:

PolarNik [594]3 years ago

7 0

Answer:

umm i gotta put this in English!!!!!

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Answer:

a) y = 2.4 x 10⁻³ m = 0.24 cm

b) y = 3.2 x 10⁻³ m = 0.32 cm

Explanation:

The formula of Young's Double Slit experiment will be used here:

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λ = wavelength

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d = slit width = 4 x 10⁻⁴ m

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a) FOR λ = 640 nm = 6.4 x 10⁻⁷ m:

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A convex security mirror has a radius of curvature of 12.0 cm. What is the magnification of a pare 3.0 m from the mirror?

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magnification will be -0.025

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We have given the radius of curvature = 12 cm

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So $\frac{1}{0.06}=\frac{1}{3}+\frac{1}{v}$

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A point charge (–5.0 µC) is placed on the x axis at x = 4.0 cm, and a second charge (+5.0 µC) is placed on the x axis at x = –4.

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inversely proportional to the square of distance i.e $F\propto \frac{1}{r^2}$

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