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ale4655 [162]
3 years ago
10

Which waves have wavelengths longer than those of visible light? Give an example of how each kind of wave is used.

Physics
2 answers:
natima [27]3 years ago
8 0

Answer:

These waves have wavelengths longer than those of visible light: Infrared radiation, microwaves  and radio waves .

Infrared radiation transmit heat from the Sun, fires and radiators.

Microwaves are used in cooking, radar and telephones.

Radio waves are used to broadcast radio and television.

Kazeer [188]3 years ago
6 0
1. Radio Waves
ex. Wi-Fi
2. Microwaves
ex. Mobile Phones
3. Infrared Radiation
ex. Heat Lamps
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a uniform rod is hung at onen end and is partially submerged in water. If the density of the rod is 5/9 than of wter, find the f
34kurt

Answer:

    \frac{h_{liquid} }{ h_{body} } = 5/9

Explanation:

This is an exercise that we can solve using Archimedes' principle which states that the thrust is equal to the weight of the desalted liquid.

         B = ρ_liquid  g V_liquid

let's write the translational equilibrium condition

         B - W = 0

let's use the definition of density

        ρ_body = m / V_body

        m = ρ_body  V_body

        W = ρ_body  V_body  g

we substitute

          ρ_liquid  g  V_liquid = ρ_body  g  V_body

          \frac{\rho_{body}   }{\rho_{liquid} } } =  \frac{V_{liquid}   }{V_{body} } }

In the problem they indicate that the ratio of densities is 5/9, we write the volume of the bar

          V = A h_bogy

Thus

          \frac{V_{liquid} }{V_{1body} } = \frac{ h_{liquid} }{h_{body} }

we substitute

           5/9 = \frac{h_{liquid} }{ h_{body} }

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2 years ago
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What is the wavelength of a 10 Hz wave that travels with a speed of 5 m/s?
garik1379 [7]
B

V= f x lambda
V= 5m/s
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2 years ago
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Answer:

Explanation:

This is case of interference in thin films

for constructive interference in thin film the condition is

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2 x 1.28 x t = λ/2 , if n = 0

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t = 118.16 nm .

the minimum non-zero thickness of the oil film required = 118.16 nm.

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