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spin [16.1K]
3 years ago
5

The wavelength of light from an electronic billboard is 4.89

Chemistry
1 answer:
strojnjashka [21]3 years ago
8 0

Answer:

Frequency = 6.13x10⁻³s⁻¹

Explanation:

The wavelength is defined as the ratio between speed of light (3x10⁸m/s) and the frequency of the wave:

Wavelength = Speed of light / frequency

Frequency = Speed of light / wavelength

Frequency = 3x10⁸m/s / 4.89x10¹⁰m

<h3>Frequency = 6.13x10⁻³s⁻¹</h3>
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Calculate the wavelength of a football (425g) thrown by an NFL quarterback traveling at 50mph
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Wavelength is 6.976 x 10^ -35 m

Explanation:

In this, we can use De Broglie’s equation. This equation is the relationship between De Broglie’s wavelength, velocity and the mass of a moving object. In this equation, we are using plank's constant which is 6.626 x 10^-34 m^2 kg/s.

We know that one mile per hour is equivalent to 0.447 M/S.

And One gram is equivalent to 10^-3 kg.

De Broglie’s wavelength = λ ( wave length) = Plank’s constant/ Mass x velocity

λ ( wave length) = 6.626 x 10^ -34/ (425 x10^-3) x ( 50 x 0.447)

                                 = 6.626 x 10^ -34/ 0. 425 x 22.35

                                 = 6.626 x 10^ -34/ 9.498

                                 = 6.976 x10^ -35 m

So, the wavelength of the football will be 6.976 x 10^ -35 m

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Speed is the rate of change of position expressed as _____ traveled per unit of time. A. direction B. meter C. displacement D. d
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