3 years ago

Why was Roemer's measurement of the speed of light inaccurate?

Physics

1 answer:

DanielleElmas [232]3 years ago

7 0

C bc you have to have the accurate diameter of earths orbit

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An 11,000-watt radio station transmits at 880 kHz. Calculate the energy of a single photon at the transmitted frequency.

prisoha [69]

The energy of a single photon at the transmitted frequency is $\bold{5834.4 \times 10^{-31} \mathrm{J}}$

Answer: Option b

<u>Solution:</u>

Energy of photon is given as $E=\frac{h c}{\lambda}$

Where c is the velocity of Light $\left(3 \times 10^{8} m / s\right)$

h is planck's constant $\left(6.63 \times 10^{-34}\right)$

λ is the wavelength of photon

Energy of photon can be rewritten as $E=h \times f$

Where f is the frequency of photon

Frequency of photon is obtained by dividing velocity of light by wavelength of photon.

$f=\frac{c}{\lambda}$

$E=6.63 \times 10^{-34} \times 880 \times 10^{3}=5834.4 \times 10^{-31} \mathrm{J}$

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If a car accelerated from 5 m/s to 25 m/s in 10 seconds what is it's acceleration?

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