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3. A 100-keV X-ray irradiates a sample containing 3-cm thick muscle and 1-cm thick bone. For...

3. A 100-keV X-ray irradiates a sample containing 3-cm thick muscle and 1-cm thick bone. For the 100-keV X-ray, HVL are 3.9 and 2.3 cm for muscle and bone, respectively. If the initial x-ray has 109 photons, please calculate how many x-ray photons get attenuated inside the sample.

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