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1. Consider two monoenergetic photon beams with the same photon fluences. In one beam the photons are 100 keV and in the other they are 1 MeV. Determine the most appropriate relation between both exposures (X).
2. Electrons with kinetic energy of 1.0 MeV have a speci c ionization in air of 6000 IP/m whereas alpha particles of 2.0 MeV have an LET in air of 0.175 keV/μm. What value is closest to the ratio LET(alphas)/LET(electrons) in air.
What is the speed of a 232 kg satellite in an approximately circular orbit 645 km above the surface of Earth?
The input piston of a hydraulic jack has cross sectiona
Luminous flux and LASER: The luminous flux of a light source is measured in the units of LUMEN (lm). Lumen (lm) is the amount of light emitted per second by uniform (point) so
Draw a picture of the heat engine in a typical fossil fuel power plant and explain how it works. 1. ___________ is a measure of the electrical potential energy per free ele
Explain the Half-Life The decay of a nucleus is a random event. It is not possible to predict which nucleus will decay and when. Even though over a period of time, the decay
Wave-particle duality: The principle of quantum mechanics that implies that light (and, indeed, all other subatomic particles) sometimes work as a wave, and sometime like a pa
Cathode rays are made up of: (1) Positively charged particles (2) Negatively charged particles (3) Neutral particles (4) None of these Ans: (2)Negatively charged pa
why laser show beat phenomenon while LIGHT do not.
A truck engine mass 5000kg is pulling a trailer mass 1000kg along a level track at an acceleration of 0.01.Resistance are 10N per 1000for the engine 5N per 1000kg for the trailer.
Derive a mathematical expression for the energy stored in a capacitor. What is the energy stored when the space between the plates is filled with a dielectric a) With chargi
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