4. X-ray radiation from diffraction and fluorescence instruments is a) Not very dangerous because the X-rays are absorbed in the air b) Very dangerous but poses little real hazard since instruments are designed to completely enclose all beams c) Very dangerous and users must not override devices designed to protect from exposures d) Dangerous only when at full power
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Physics, 22.06.2019 18:40
Which body is in equilibrium? (1) a satellite orbiting earth in a circular orbit (2) a ball falling freely toward the surface of earth (3) a car moving with a constant speed along a straight, level road (4) a projectile at the highest point in its trajectory
Answers: 2
4. X-ray radiation from diffraction and fluorescence instruments is a) Not very dangerous because th...
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