Answer:
318.3 nm
Explanation:
We approximate the circular film as a cylinder of height h and radius, r. Its volume V = πr²h. Since this volume equals the volume of the oil drop, the height of the circular film is thus h = V/πr²
V = 10⁻¹⁰ m³ and r = 10 m
Substituting into h, we have
h = 10⁻¹⁰ m³/π(10)²
= 0.3183 × 10⁻¹² m
= 3183 × 10⁻⁹ m
= 318.3 nm
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Answer:
the conversion of matter into energy
Explanation:
A nuclear reaction is a reaction in which there is a change in the nuclei of the atoms involved. The two most important examples of nuclear reactions are:
- Nuclear fission: it occurs when a heavy, unstable nucleus breaks apart into two or more lighter nuclei
- Nuclear fusion: it occurs when two lighter nuclei fuse together into a heavier nucleus
In both cases, the total mass of the final products is smaller than the total mass of the initial nuclei: this means that part of the mass of the initial nuclei has been converted into energy, according to Einstein's formula:
where 
is the variation of mass and c is the speed of light. Since the value of c is very large, we can see from the formula that even a small amount of is able to produce a huge amount of energy, and this is a typical feature of any nuclear reaction.
Answer:
magnitude of displacement of a sound pressure wave
Explanation:
The time spent in a complete cycle is called the period (T) measured in seconds and the number of cycles per second is called the frequency (f) and is measured in cycles per second or Hetz. The frequency is inverse to the period f = 1 / T. On the other hand, each segment of the rope has a certain<u> amplitude </u>(A). The amplitude is defined as the maximum displacement from the equilibrium position. The frequency is determined by the source, so that if the rope is agitated quickly, the frequency will be higher (high frequency) than if I stir it slowly (low frequency) than if I stir it slowly (low frequency) The amplitude is also determined by the source, so that if the end of the rope rises a lot from the horizontal or equilibrium position the amplitude will be large and vice versa.
