Question

5 N force acting on a floor produces pressure of 125 N m -2 . What is the area of
contact on which force is acting?

Answer 1

Answer:

25 is the right answer

Explanation:

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Answer 2

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According to the de Broglie equations, for electromagnetic radiation energy is directly proportional to frequency: E = mc² = h·c/λ = h·ν where E is the energy; c = 299 792 458 m/s is the speed of light; λ is the wavelength; ν is the frequency and h = 6.62607015·10⁻³⁴ J·s is the Planck constant. Thus (1 J) /h = 1.509 190 311(67) × 10²⁴ GHz.

Energy is directly proportional to temperature: E = mc² = k·T where E is the energy; k = 1.380649×10 ⁻²³ J/K is the Boltzmann constant, which relates the energy scale to the Kelvin temperature scale and T is the temperature. Therefore, (1 J)/k = 7.24297051603992×10²² K.