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3 years ago

How do polarizing sunglasses reduce the glare from the road? Explain.

Physics

1 answer:

belka [17]3 years ago

4 0

Answer

Polarization is a method of restricting different plane of transverse waves into the required plane.

Polarization process is done with the help of Polaroids. Polaroids are kept at different angles, these angles are selected according to the wave requirement. Polaroids allows only waves which are aligned to it.

so, this phenomenon is the same in case of polarizing sunglasses as it restricts the unwanted sun waves to pass through it.

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Please help The position of masses 4kg, 6kg, 7kg, 10kg, 2kg, and 12kg are (-1,1), (4,2), (-3,-2), (5,-4), (-2,4) and (3,-5) resp

Sophie [7]

Answer:

(1.9756, -2.1951)

Explanation:

The center of mass equation is: $x_{cm}$ = $\frac{m_{1}x_{1} + m_{2}x_{2} + m_{3}x_{3} + m_{4}x_{4} + m_{5}x_{5} + m_{6}x_{6}}{m_{1} + m_{2} + m_{3} + m_{4} + m_{5} + m_{6}}$ , where m represents the masses and x represents the position.

In order to find the coordinates of the center of mass, we need to use this equation for both the x-values and the y-values.

x-values:

$x_{cm}$ = $\frac{m_{1}x_{1} + m_{2}x_{2} + m_{3}x_{3} + m_{4}x_{4} + m_{5}x_{5} + m_{6}x_{6}}{m_{1} + m_{2} + m_{3} + m_{4} + m_{5} + m_{6}}$ = $\frac{4(-1)+6(4)+7(-3)+10(5)+2(-2)+12(3)}{4+6+7+10+2+12}$ = $\frac{(-4)+(24)+(-21)+(50)+(-4)+(36)}{41}$ = $\frac{81}{41}$ = 1.9756

y-values:

$y_{cm}$ = $\frac{m_{1}y_{1} + m_{2}y_{2} + m_{3}y_{3} + m_{4}y_{4} + m_{5}y_{5} + m_{6}y_{6}}{m_{1} + m_{2} + m_{3} + m_{4} + m_{5} + m_{6}}$ = $\frac{4(1)+6(2)+7(-2)+10(-4)+2(4)+12(-5)}{4+6+7+10+2+12}$ = $\frac{(4)+(12)+(-14)+(-40)+(8)+(-60)}{41}$ = $\frac{-90}{41}$ = -2.1951

center of mass:

(1.9756, -2.1951)

6 0

3 years ago

Calculate the capacitance of a system that stores 9.4 x 10-10 C of charge at

natka813 [3]

Answer:

A. $1.88\times 10^{-11}\,F$ .

Explanation:

By definition of Electric Capacitance, the capacitance of the system ( $C$ ), in farads, is described by the following formula:

$C = \frac{q}{V}$ (1)

Where:

$q$ - Electric charge, in coulombs.

$V$ - Voltage, in volts.

If we know that $q = 9.4\times 10^{-10}\,C$ and $V = 50\,V$ , then the capacitance of the system is:

$C = \frac{9.4\times 10^{-10}\,C}{50\,V}$

$C = 1.88\times 10^{-11}\,F$

The correct answer is A.

8 0

3 years ago

Suppose you increase your walking speed from 6s to 12 m/s in a period of 2 s. What is acceleration

ElenaW [278]

As we know that acceleration is given as

$a = \frac{v_f - v_i}{t}$

here we know that

$v_i = 6 m/s$

$v_f = 12 m/s$

$\Delta t = 2 s$

now we will have

$a = \frac{12 - 6}{2}$

$a = 3 m/s^2$

so acceleration will be 3 m/s^2

5 0

3 years ago

The displacement of particle moving along on x axis is given by x = 18t + 5.0t^2, where x is in meters and t is in seconds Calcu

Masja [62]

Answer:

38 m/s

43 m/s

Explanation:

x = 18t + 5.0t²

The instantaneous velocity is the first derivative:

v = 18 + 10.t

At t = 2.0:

v = 18 + 10.(2.0)

v = 38 m/s

The average velocity is the change in position over change in time.

v = Δx / Δt

v = [ (18t₂ + 5.0t₂²) − (18t₁ + 5.0t₁²) ] / (t₂ − t₁)

Between t = 2.0 and t = 3.0:

v = [ (18(3.0) + 5.0(3.0)²) − (18(2.0) + 5.0(2.0)²) ] / (3.0 − 2.0)

v = [ (54 + 45) − (36 + 20.) ] / 1.0

v = 99 − 56

v = 43 m/s

6 0

3 years ago

If our solar system's Sun was half the mass as it is now, what would happen to the orbit of the Earth

avanturin [10]

Essentially, an increase in mass means an increase in gravity, while a decrease in mass means a decrease in gravity. So if the Sun spontaneously lost half its mass (gasp, shudder, the horror!) then its gravitational pull on Earth would lessen as well, ultimately changing the very nature of our orbit around the Sun.
Thank You!
Please Mark Brainliest!

5 0

3 years ago