1) It is difficult to produce a good quality X-ray image of the stomach due to several reasons:
- The stomach is located deep within the body, surrounded by other organs and tissues which can obstruct the X-ray beam. This can lead to a poor image quality with reduced visibility of the stomach or overlapping of other structures.
- The stomach contains air, food particles, and fluids which can affect the X-ray absorption and scattering patterns. This can result in blurring or distortion of the image.
- The stomach is a dynamic organ that constantly moves and changes shape as part of the digestive process. It can be difficult to capture a clear image of the stomach in a specific position as it may constantly be in motion.
2) When a charge moves between points that are at the same potential, it does not experience any potential difference, and therefore, no work is done. Work is defined as the product of the force applied on an object and the displacement of that object in the direction of the force. In this case, since the potential is the same at both points, there is no force acting on the charge to cause any displacement, and thus, no work is done.
3) The energy of a photon can be calculated using the equation E = hf, where E is the energy, h is Planck's constant (6.626 x 10^-34 J.s), and f is the frequency of the radiation. In the case of ultraviolet (UV) radiation, the typical range of frequencies lies between 7.5 x 10^14 Hz to 3 x 10^16 Hz.
Let's calculate the photon energy for a UV frequency of 1 x 10^15 Hz:
E = (6.626 x 10^-34 J.s) x (1 x 10^15 Hz)
E ≈ 6.626 x 10^-19 J
Therefore, the typical photon energy of ultraviolet radiation is approximately 6.626 x 10^-19 Joules.
Explain why is it difficult to produce a good quality X-ray image of the stomach.
Explain why there is no work done by a charge moving between points that are at the same potential.
Calculate the typical photon energy of ultra Violet.
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