4 years ago

Polarized sunglasses work by

Physics

1 answer:

mina [271]4 years ago

3 0

A. Blocking light waves that vibrate in the plane. (?)

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Yellow light travels through a certain glass block at a speed of 1.97 × 108 m/s. The wavelength of the light in this particular

Andre45 [30]

The frequency of the yellow light is $5.17\cdot 10^{14}Hz$

Explanation:

The relationship between wavelength, frequency and speed of a wave is given by the wave equation:

$v = f \lambda$

where

v is the speed of the wave

f is the frequency

$\lambda$ is the wavelength

For the yellow light in this problem, we have:

$v=1.97\cdot 10^8 m/s$ is the speed

$\lambda=3.81\cdot 10^{-7} m$ is the wavelength

Solving for f, we find its frequency:

$f=\frac{v}{\lambda}=\frac{1.97\cdot 10^8}{3.81\cdot 10^{-7}}=5.17\cdot 10^{14}Hz$

Learn more about frequency and waves:

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8 0

3 years ago

Ian walks 2 km to his best friend’s house, then walks 0.5 km to the library. He then makes a 2.5 km walk home. The entire walk t

Sonbull [250]

Average speed = (total distance covered) / (time to cover the distance)

Ian's total distance = (2km + 0.5km + 2.5km) = 5 km

Ian's total time = 3 hours

Average speed = (5km) / (3 hours)

Average speed = 1.66 km/hr

4 0

3 years ago

The solution to a disjunction is the what of the two solutions

astra-53 [7]

Answer:

The solution set of a disjunction is the union of the solution sets of the individual inequalities. A convenient way to graph a disjunction is to graph each individual inequality above the number line, then move them both onto the actual number line

Explanation:

6 0

3 years ago

Kinetic energy is the energy of ______. It increases with mass ______ and _______ .Potential energy is the energy of _______or__

Alona [7]

Answer:

velocity. height. weight. possition. place. energy. force.

Explanation: 50/50 % chance they are wrong and write.

5 0

4 years ago

An adiabatic closed system is accelerated from 0 m/s to 34 m/s. Determine the specific energy change of this system, in kJ/kg.

prohojiy [21]

Answer:

Δe=0.578 kJ/kg

Explanation:

Given data

Velocity v₁=0 m/s

Velocity v₂=34 m/s

to find

Specific energy change Δe

Solution

The specific energy change is simply determined from change in velocity

Δe=(v₂²-v₁²)/2

Put the given values to find the specific energy change

$=(\frac{(34)^{2} *10^{-3} }{2} )\\=0.578kJ/kg$

Δe=0.578 kJ/kg

6 0

3 years ago

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