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1.
A: What is EM radiation? Explain some key differences between ionizing EM radiation and other forms of EM radiation, giving an example of each.
B: What are a two different ways that ionizing radiation can hurt people?
C: What is the linear hypothesis for radiation exposure? Is it used for anything practical? Is it proven?
D: Suppose you learn that a hospital X ray imaging machine is subjecting patients to 50% more radiation that it is supposed to do. Why or why not would this be cause for concern?
E: Suppose a patient needs a CAT scan to verify that there is no intracranial bleeding. What would you say about the dangers and on what basis?
F: All light-whether visible of invisible is ____ radiation. (Fill in the blank.) Name three forms of invisible light, saying in what important way they differ. What are some sources and uses of the forms you mention?
G: In what ways could non-ionizing radiation hurt people? (Please consider two different forms of non-ionizing radiation.)
A drop of water on a countertop reflects light from a flower held 3.10cm directly above it. The flower's diameter is1.80cm and the diameter of the flower's image is 0.117cm. What is the focal length of the water drop, assuming that it might be treate..
An object is located 17.2 cm in front of a convex mirror, the image being 6.78 cm behind the mirror. How far in front of the mirror is the second object located
Two slits are separated by .1 mm. Planar light incident on them produces a diffraction pattern on a board 1.35 m away, estimate the wavelength of light
A football is kicked at an angle of 37.0 degrees with a velocity of 20.0 m/s. calculate the velocity at the maximim height
A 0.20-kg object attached to the end of a string swings in a vertical circle (radius = 80 cm). At the top of the circle the speed of the object is 4.5 m/s. What is the magnitude of the tension in the string at this position?
A heat engine has an efficiency of 61.5% and it exhausts 7500 J of waste heat into the environment. How much work is performed by the previous heat engine
A 250 gram ice cube at -10 C is placed in a Alum cup whose initial temp is 70 C. what is the mass of the cup
Assume the near point of the eye is 25cm. Thedistance between the eyepiece and objective lens in a certaincompound microscope is l =11.3 cm. What is the overall magnificationof the microscope
In a certain particle accelerator, a current of 0.5 mA is carried by a 5 MeV proton beam that has a radius of 1.5 mm. Find the power consumption of the accelerator
A 599 Hz sound wave travels through a substance. The wavelength of the sound wave is measured to be 233 centimeters. What is the speed of sound in the substance in m/s?
A battery with an emf of 12.0 V shows a terminal voltage of 11.4V when operating in a circuit with two lightbulbs, What is the battery's internal resistance
Figure shows the LED's i - v characteristic. Using either MATLAB or a graphical approach, determine the voltage across and current through the LED.
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